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/**
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* '$RCSfile$'
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* Purpose: A Class that handles the SAX XML events as they
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* are generated from XML documents
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* Copyright: 2000 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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* Authors: Matt Jones, Jivka Bojilova
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*
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* '$Author: daigle $'
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* '$Date: 2010-04-14 11:31:03 -0700 (Wed, 14 Apr 2010) $'
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* '$Revision: 5311 $'
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package edu.ucsb.nceas.metacat;
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import java.io.BufferedReader;
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import java.io.File;
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import java.io.FileReader;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.Reader;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.sql.Statement;
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import java.util.EmptyStackException;
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import java.util.Enumeration;
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import java.util.Hashtable;
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import java.util.Stack;
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import java.util.Vector;
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import org.apache.log4j.Logger;
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import org.xml.sax.Attributes;
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import org.xml.sax.SAXException;
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import edu.ucsb.nceas.metacat.accesscontrol.AccessControlInterface;
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import edu.ucsb.nceas.metacat.accesscontrol.AccessRule;
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import edu.ucsb.nceas.metacat.accesscontrol.AccessSection;
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import edu.ucsb.nceas.metacat.database.DBConnection;
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import edu.ucsb.nceas.metacat.database.DBConnectionPool;
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import edu.ucsb.nceas.metacat.properties.PropertyService;
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import edu.ucsb.nceas.metacat.util.DocumentUtil;
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import edu.ucsb.nceas.metacat.util.MetacatUtil;
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import edu.ucsb.nceas.utilities.PropertyNotFoundException;
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/**
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* A database aware Class implementing callback methods for the SAX parser to
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* call when processing the XML stream and generating events
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*/
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public class Eml210SAXHandler extends DBSAXHandler implements AccessControlInterface {
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private boolean processingTopLevelAccess = false;
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private boolean processingAdditionalAccess = false;
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private boolean processingOtherAccess = false;
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private AccessSection accessObject = null;
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private AccessRule accessRule = null;
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// all access rules
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private Vector<AccessSection> accessObjectList = new Vector<AccessSection>();
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private Hashtable<String, AccessSection> topLevelAccessControlMap = new Hashtable<String, AccessSection>();
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// subtree access for additionalmetadata
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private Hashtable<String, AccessSection> additionalAccessControlMap = new Hashtable<String, AccessSection>();
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private Vector<Hashtable<String, AccessSection>> additionalAccessMapList = new Vector<Hashtable<String, AccessSection>>();
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// ids from additionalmetadata/describes
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private Vector<String> describesId = new Vector<String>();
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private Stack<SubTree> subTreeInfoStack = new Stack<SubTree>();
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private Vector<SubTree> subTreeList = new Vector<SubTree>();
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private boolean needToCheckAccessModule = false;
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private Vector<AccessSection> unChangeableAccessSubTreeVector = new Vector<AccessSection>();
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private Stack<NodeRecord> currentUnchangeableAccessModuleNodeStack = new Stack<NodeRecord>();
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private AccessSection topAccessSection;
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// we need an another stack to store the access node which we pull out just
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// from xml. If a reference happened, we can use the stack the compare nodes
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private Stack<NodeRecord> storedAccessNodeStack = new Stack<NodeRecord>();
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// vector stored the data file id which will be write into relation table
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private Vector<String> onlineDataFileIdInRelationVector = new Vector<String>();
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// vector stored the data file id which will be write top access rules to
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// access table
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private Vector<String> onlineDataFileIdInTopAccessVector = new Vector<String>();
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// Indicator of inline data
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private boolean handleInlineData = false;
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private Hashtable<String, String> inlineDataNameSpace = null;
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private FileWriter inlineDataFileWriter = null;
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private String inlineDataFileName = null;
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DistributionSection currentDistributionSection = null;
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Vector<DistributionSection> allDistributionSections = new Vector<DistributionSection>();
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// This variable keeps a counter of each distribution element. This index
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// will be used to name the inline data file that gets written to disk, and to
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// strip inline data from the metadata document on file if the user does not have
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// read access.
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private int distributionIndex = 0;
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// private String distributionOnlineFileName = null;
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// This is used to delete inline files if the xml does not parse correctly.
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private Vector<String> inlineFileIdList = new Vector<String>();
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// Constant
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private static final String EML = "eml";
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private static final String DISTRIBUTION = "distribution";
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private static final String ORDER = "order";
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private static final String ID = "id";
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private static final String REFERENCES = "references";
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public static final String INLINE = "inline";
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private static final String ONLINE = "online";
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private static final String URL = "url";
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// private static final String PERMISSIONERROR = "User tried to update a
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// subtree "
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// + "when they don't have write permission!";
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private static final String UPDATEACCESSERROR = "User tried to update an "
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+ "access module when they don't have \"ALL\" permission!";
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private static final String TOPLEVEL = "top";
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private static final String SUBTREELEVEL = "subtree";
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private static final String RELATION = "Provides info for";
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private Logger logMetacat = Logger.getLogger(Eml210SAXHandler.class);
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/**
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* Construct an instance of the handler class In this constructor, user can
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* specify the version need to update
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*
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* @param conn
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* the JDBC connection to which information is written
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* @param action -
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* "INSERT" or "UPDATE"
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* @param docid
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* to be inserted or updated into JDBC connection
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* @param revision,
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* the user specified the revision need to be update
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* @param user
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* the user connected to MetaCat servlet and owns the document
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* @param groups
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* the groups to which user belongs
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* @param pub
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* flag for public "read" access on document
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* @param serverCode
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* the serverid from xml_replication on which this document
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* resides.
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*
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*/
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public Eml210SAXHandler(DBConnection conn, String action, String docid,
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String revision, String user, String[] groups, String pub, int serverCode,
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String createDate, String updateDate) throws SAXException {
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super(conn, action, docid, revision, user, groups, pub, serverCode, createDate,
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updateDate);
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// Get the unchangeable subtrees (user doesn't have write permission)
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try {
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PermissionController control = new PermissionController(docid
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+ PropertyService.getProperty("document.accNumSeparator") + revision);
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// If the action is update and user doesn't have "ALL" permission
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// we need to check if user can update access subtree
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if (!control.hasPermission(user, groups, AccessControlInterface.ALLSTRING)
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&& action != null && action.equals("UPDATE")) {
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needToCheckAccessModule = true;
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unChangeableAccessSubTreeVector = getAccessSubTreeListFromDB();
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}
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} catch (Exception e) {
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throw new SAXException(e.getMessage());
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}
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}
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/*
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* Get the subtree node info from xml_accesssubtree table
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*/
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private Vector<AccessSection> getAccessSubTreeListFromDB() throws Exception {
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Vector<AccessSection> result = new Vector<AccessSection>();
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PreparedStatement pstmt = null;
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ResultSet rs = null;
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String sql = "SELECT controllevel, subtreeid, startnodeid, endnodeid "
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+ "FROM xml_accesssubtree WHERE docid like ? "
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+ "ORDER BY startnodeid ASC";
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try {
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pstmt = connection.prepareStatement(sql);
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// Increase DBConnection usage count
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connection.increaseUsageCount(1);
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// Bind the values to the query
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pstmt.setString(1, docid);
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pstmt.execute();
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// Get result set
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rs = pstmt.getResultSet();
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while (rs.next()) {
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String level = rs.getString(1);
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String sectionId = rs.getString(2);
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long startNodeId = rs.getLong(3);
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long endNodeId = rs.getLong(4);
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// create a new access section
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AccessSection accessObj = new AccessSection();
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accessObj.setControlLevel(level);
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accessObj.setDocId(docid);
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accessObj.setSubTreeId(sectionId);
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accessObj.setStartNodeId(startNodeId);
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accessObj.setEndNodeId(endNodeId);
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Stack<NodeRecord> nodeStack = accessObj.getSubTreeNodeStack();
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accessObj.setSubTreeNodeStack(nodeStack);
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// add this access obj into vector
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result.add(accessObj);
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// Get the top level access subtree control
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if (level != null && level.equals(TOPLEVEL)) {
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topAccessSection = accessObj;
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}
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}
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pstmt.close();
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}// try
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catch (SQLException e) {
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throw new SAXException("EMLSAXHandler.getAccessSubTreeListFromDB(): "
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+ e.getMessage());
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}// catch
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finally {
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try {
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pstmt.close();
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} catch (SQLException ee) {
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throw new SAXException("EMLSAXHandler.getAccessSubTreeListFromDB(): "
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+ ee.getMessage());
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}
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}// finally
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return result;
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}
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275
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/** SAX Handler that is called at the start of each XML element */
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public void startElement(String uri, String localName, String qName, Attributes atts)
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throws SAXException {
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// for element <eml:eml...> qname is "eml:eml", local name is "eml"
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// for element <acl....> both qname and local name is "eml"
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// uri is namesapce
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logMetacat.debug("Start ELEMENT(qName) " + qName);
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logMetacat.debug("Start ELEMENT(localName) " + localName);
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logMetacat.debug("Start ELEMENT(uri) " + uri);
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284
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285
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DBSAXNode parentNode = null;
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DBSAXNode currentNode = null;
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287
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288
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if (!handleInlineData) {
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289
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// Get a reference to the parent node for the id
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try {
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parentNode = (DBSAXNode) nodeStack.peek();
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} catch (EmptyStackException e) {
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293
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parentNode = null;
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}
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295
|
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296
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// start handle inline data
|
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if (localName.equals(INLINE)) {
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298
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handleInlineData = true;
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299
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// initialize namespace hash for in line data
|
300
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inlineDataNameSpace = new Hashtable<String, String>();
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301
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// initialize file writer
|
302
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String docidWithoutRev = DocumentUtil.getDocIdFromString(docid);
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303
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String seperator = ".";
|
304
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try {
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305
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seperator = PropertyService.getProperty("document.accNumSeparator");
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306
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} catch (PropertyNotFoundException pnfe) {
|
307
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logMetacat.error("Could not fing property 'accNumSeparator'. "
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308
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+ "Setting separator to '.': " + pnfe.getMessage());
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309
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}
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310
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// the new file name will look like docid.rev.2
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inlineDataFileName = docidWithoutRev + seperator + revision + seperator
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312
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+ distributionIndex;
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313
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inlineDataFileWriter = createInlineDataFileWriter(inlineDataFileName);
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// put the inline file id into a vector. If upload failed,
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315
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// metacat will delete the inline data file
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inlineFileIdList.add(inlineDataFileName);
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317
|
|
318
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currentDistributionSection.setDistributionType(DistributionSection.INLINE_DATA_DISTRIBUTION);
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319
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currentDistributionSection.setDataFileName(inlineDataFileName);
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320
|
|
321
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}
|
322
|
|
323
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// If hit a text node, we need write this text for current's parent
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324
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// node This will happen if the element is mixed
|
325
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if (hitTextNode && parentNode != null) {
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326
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327
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// compare top level access module
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328
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if (processingTopLevelAccess && needToCheckAccessModule) {
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compareAccessTextNode(currentUnchangeableAccessModuleNodeStack, textBuffer);
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330
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}
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331
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332
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if (needToCheckAccessModule
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333
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&& (processingAdditionalAccess || processingOtherAccess || processingTopLevelAccess)) {
|
334
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// stored the pull out nodes into storedNode stack
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335
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NodeRecord nodeElement = new NodeRecord(-2, -2, -2, "TEXT", null,
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336
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null, MetacatUtil.normalize(textBuffer.toString()));
|
337
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storedAccessNodeStack.push(nodeElement);
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338
|
|
339
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}
|
340
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|
341
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// write the textbuffer into db for parent node.
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342
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endNodeId = writeTextForDBSAXNode(endNodeId, textBuffer, parentNode);
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343
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// rest hitTextNode
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344
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hitTextNode = false;
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345
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// reset textbuffer
|
346
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textBuffer = null;
|
347
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textBuffer = new StringBuffer();
|
348
|
|
349
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}
|
350
|
|
351
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// Document representation that points to the root document node
|
352
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if (atFirstElement) {
|
353
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atFirstElement = false;
|
354
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// If no DOCTYPE declaration: docname = root element
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355
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// doctype = root element name or name space
|
356
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if (docname == null) {
|
357
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docname = localName;
|
358
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// if uri isn't null doctype = uri(namespace)
|
359
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// othewise root element
|
360
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if (uri != null && !(uri.trim()).equals("")) {
|
361
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doctype = uri;
|
362
|
} else {
|
363
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doctype = docname;
|
364
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}
|
365
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logMetacat.debug("DOCNAME-a: " + docname);
|
366
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logMetacat.debug("DOCTYPE-a: " + doctype);
|
367
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} else if (doctype == null) {
|
368
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// because docname is not null and it is declared in dtd
|
369
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// so could not be in schema, no namespace
|
370
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doctype = docname;
|
371
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logMetacat.debug("DOCTYPE-b: " + doctype);
|
372
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}
|
373
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rootNode.writeNodename(docname);
|
374
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try {
|
375
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// for validated XML Documents store a reference to XML DB
|
376
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// Catalog. Because this is select statement and it needn't
|
377
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// roll back if insert document action failed. In order to
|
378
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// decrease DBConnection usage count, we get a new
|
379
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// dbconnection from pool String catalogid = null;
|
380
|
DBConnection dbConn = null;
|
381
|
int serialNumber = -1;
|
382
|
|
383
|
try {
|
384
|
// Get dbconnection
|
385
|
dbConn = DBConnectionPool
|
386
|
.getDBConnection("DBSAXHandler.startElement");
|
387
|
serialNumber = dbConn.getCheckOutSerialNumber();
|
388
|
|
389
|
Statement stmt = dbConn.createStatement();
|
390
|
ResultSet rs = stmt
|
391
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.executeQuery("SELECT catalog_id FROM xml_catalog "
|
392
|
+ "WHERE entry_type = 'Schema' "
|
393
|
+ "AND public_id = '" + doctype + "'");
|
394
|
boolean hasRow = rs.next();
|
395
|
if (hasRow) {
|
396
|
catalogid = rs.getString(1);
|
397
|
}
|
398
|
stmt.close();
|
399
|
}// try
|
400
|
finally {
|
401
|
// Return dbconnection
|
402
|
DBConnectionPool.returnDBConnection(dbConn, serialNumber);
|
403
|
}// finally
|
404
|
|
405
|
// create documentImpl object by the constructor which can
|
406
|
// specify the revision
|
407
|
if (!super.getIsRevisionDoc()) {
|
408
|
currentDocument = new DocumentImpl(connection, rootNode
|
409
|
.getNodeID(), docname, doctype, docid, revision, action,
|
410
|
user, this.pub, catalogid, this.serverCode, createDate,
|
411
|
updateDate);
|
412
|
}
|
413
|
|
414
|
} catch (McdbDocNotFoundException mdnfe) {
|
415
|
Vector<Integer> revList = null;
|
416
|
|
417
|
try {
|
418
|
revList = DBUtil.getRevListFromRevisionTable(docid);
|
419
|
} catch (SQLException sqle) {
|
420
|
logMetacat.error("SQL error when trying to get rev list for doc " + docid + " : " + sqle.getMessage());
|
421
|
throw (new SAXException("Doc ID " + docid + " was not found and cannot be updated."));
|
422
|
}
|
423
|
|
424
|
if (revList.size() > 0) {
|
425
|
throw (new SAXException("EML210SaxHandler.startElement - Doc ID " + docid + " was deleted and cannot be updated."));
|
426
|
} else {
|
427
|
throw (new SAXException("EML210SaxHandler.startElement - Doc ID " + docid + " was not found and cannot be updated."));
|
428
|
}
|
429
|
} catch (Exception e) {
|
430
|
throw (new SAXException("EML210SaxHandler.startElement - error with action " +
|
431
|
action + " : " + e.getMessage()));
|
432
|
}
|
433
|
}
|
434
|
|
435
|
// Create the current node representation
|
436
|
currentNode = new DBSAXNode(connection, qName, localName, parentNode,
|
437
|
rootNode.getNodeID(), docid, doctype);
|
438
|
// Use a local variable to store the element node id
|
439
|
// If this element is a start point of subtree(section), it will be
|
440
|
// stored otherwise, it will be discarded
|
441
|
long startNodeId = currentNode.getNodeID();
|
442
|
// Add all of the namespaces
|
443
|
String prefix = null;
|
444
|
String nsuri = null;
|
445
|
Enumeration<String> prefixes = namespaces.keys();
|
446
|
while (prefixes.hasMoreElements()) {
|
447
|
prefix = prefixes.nextElement();
|
448
|
nsuri = namespaces.get(prefix);
|
449
|
endNodeId = currentNode.setNamespace(prefix, nsuri, docid);
|
450
|
}
|
451
|
|
452
|
// Add all of the attributes
|
453
|
for (int i = 0; i < atts.getLength(); i++) {
|
454
|
String attributeName = atts.getQName(i);
|
455
|
String attributeValue = atts.getValue(i);
|
456
|
endNodeId = currentNode
|
457
|
.setAttribute(attributeName, attributeValue, docid);
|
458
|
|
459
|
// To handle name space and schema location if the attribute
|
460
|
// name is xsi:schemaLocation. If the name space is in not
|
461
|
// in catalog table it will be registered.
|
462
|
if (attributeName != null
|
463
|
&& attributeName.indexOf(MetaCatServlet.SCHEMALOCATIONKEYWORD) != -1) {
|
464
|
SchemaLocationResolver resolver = new SchemaLocationResolver(
|
465
|
attributeValue);
|
466
|
resolver.resolveNameSpace();
|
467
|
|
468
|
} else if (attributeName != null && attributeName.equals(ID)) {
|
469
|
|
470
|
}
|
471
|
}// for
|
472
|
|
473
|
// handle access stuff
|
474
|
if (localName.equals(ACCESS)) {
|
475
|
if (parentNode.getTagName().equals(EML)) {
|
476
|
processingTopLevelAccess = true;
|
477
|
} else if (parentNode.getTagName() == DISTRIBUTION) {
|
478
|
processingAdditionalAccess = true;
|
479
|
} else {
|
480
|
// process other access embedded into resource level
|
481
|
// module
|
482
|
processingOtherAccess = true;
|
483
|
}
|
484
|
// create access object
|
485
|
accessObject = new AccessSection();
|
486
|
// set permission order
|
487
|
String permOrder = currentNode.getAttribute(ORDER);
|
488
|
accessObject.setPermissionOrder(permOrder);
|
489
|
// set access id
|
490
|
String accessId = currentNode.getAttribute(ID);
|
491
|
accessObject.setSubTreeId(accessId);
|
492
|
accessObject.setStartNodeId(startNodeId);
|
493
|
accessObject.setDocId(docid);
|
494
|
if (processingAdditionalAccess) {
|
495
|
accessObject.setDataFileName(inlineDataFileName);
|
496
|
}
|
497
|
|
498
|
// load top level node stack to
|
499
|
// currentUnchangableAccessModuleNodeStack
|
500
|
if (processingTopLevelAccess && needToCheckAccessModule) {
|
501
|
// get the node stack for
|
502
|
currentUnchangeableAccessModuleNodeStack = topAccessSection
|
503
|
.getSubTreeNodeStack();
|
504
|
}
|
505
|
} else if (localName.equals(DISTRIBUTION)) {
|
506
|
distributionIndex++;
|
507
|
currentDistributionSection = new DistributionSection(distributionIndex);
|
508
|
|
509
|
// handle subtree info
|
510
|
SubTree subTree = new SubTree();
|
511
|
// set sub tree id
|
512
|
subTree.setSubTreeId(String.valueOf(distributionIndex));
|
513
|
// set sub tree start element name
|
514
|
subTree.setStartElementName(currentNode.getTagName());
|
515
|
// set start node number
|
516
|
subTree.setStartNodeId(startNodeId);
|
517
|
// add to stack, but it didn't get end node id yet
|
518
|
subTreeInfoStack.push(subTree);
|
519
|
}
|
520
|
// Set up a access rule for allow
|
521
|
else if (parentNode.getTagName() != null
|
522
|
&& (parentNode.getTagName()).equals(ACCESS)
|
523
|
&& localName.equals(ALLOW)) {
|
524
|
|
525
|
accessRule = new AccessRule();
|
526
|
|
527
|
// set permission type "allow"
|
528
|
accessRule.setPermissionType(ALLOW);
|
529
|
|
530
|
}
|
531
|
// set up an access rule for deny
|
532
|
else if (parentNode.getTagName() != null
|
533
|
&& (parentNode.getTagName()).equals(ACCESS) && localName.equals(DENY)) {
|
534
|
accessRule = new AccessRule();
|
535
|
// set permission type "allow"
|
536
|
accessRule.setPermissionType(DENY);
|
537
|
}
|
538
|
|
539
|
// Add the node to the stack, so that any text data can be
|
540
|
// added as it is encountered
|
541
|
nodeStack.push(currentNode);
|
542
|
// Add the node to the vector used by thread for writing XML Index
|
543
|
nodeIndex.addElement(currentNode);
|
544
|
|
545
|
// compare top access level module
|
546
|
if (processingTopLevelAccess && needToCheckAccessModule) {
|
547
|
compareElementNameSpaceAttributes(
|
548
|
currentUnchangeableAccessModuleNodeStack, namespaces, atts,
|
549
|
localName, UPDATEACCESSERROR);
|
550
|
|
551
|
}
|
552
|
|
553
|
// store access module element and attributes into stored stack
|
554
|
if (needToCheckAccessModule
|
555
|
&& (processingAdditionalAccess || processingOtherAccess || processingTopLevelAccess)) {
|
556
|
// stored the pull out nodes into storedNode stack
|
557
|
NodeRecord nodeElement = new NodeRecord(-2, -2, -2, "ELEMENT", localName,
|
558
|
prefix, MetacatUtil.normalize(null));
|
559
|
storedAccessNodeStack.push(nodeElement);
|
560
|
for (int i = 0; i < atts.getLength(); i++) {
|
561
|
String attributeName = atts.getQName(i);
|
562
|
String attributeValue = atts.getValue(i);
|
563
|
NodeRecord nodeAttribute = new NodeRecord(-2, -2, -2, "ATTRIBUTE",
|
564
|
attributeName, null, MetacatUtil.normalize(attributeValue));
|
565
|
storedAccessNodeStack.push(nodeAttribute);
|
566
|
}
|
567
|
|
568
|
}
|
569
|
|
570
|
// reset name space
|
571
|
namespaces = null;
|
572
|
namespaces = new Hashtable<String, String>();
|
573
|
}// not inline data
|
574
|
else {
|
575
|
// we don't buffer the inline data in characters() method
|
576
|
// so start character don't need to hand text node.
|
577
|
|
578
|
// inline data may be the xml format.
|
579
|
StringBuffer inlineElements = new StringBuffer();
|
580
|
inlineElements.append("<").append(qName);
|
581
|
// append attributes
|
582
|
for (int i = 0; i < atts.getLength(); i++) {
|
583
|
String attributeName = atts.getQName(i);
|
584
|
String attributeValue = atts.getValue(i);
|
585
|
inlineElements.append(" ");
|
586
|
inlineElements.append(attributeName);
|
587
|
inlineElements.append("=\"");
|
588
|
inlineElements.append(attributeValue);
|
589
|
inlineElements.append("\"");
|
590
|
}
|
591
|
// append namespace
|
592
|
String prefix = null;
|
593
|
String nsuri = null;
|
594
|
Enumeration<String> prefixes = inlineDataNameSpace.keys();
|
595
|
while (prefixes.hasMoreElements()) {
|
596
|
prefix = prefixes.nextElement();
|
597
|
nsuri = namespaces.get(prefix);
|
598
|
inlineElements.append(" ");
|
599
|
inlineElements.append("xmlns:");
|
600
|
inlineElements.append(prefix);
|
601
|
inlineElements.append("=\"");
|
602
|
inlineElements.append(nsuri);
|
603
|
inlineElements.append("\"");
|
604
|
}
|
605
|
inlineElements.append(">");
|
606
|
// reset inline data name space
|
607
|
inlineDataNameSpace = null;
|
608
|
inlineDataNameSpace = new Hashtable<String, String>();
|
609
|
// write inline data into file
|
610
|
logMetacat.debug("the inline element data is: " + inlineElements.toString());
|
611
|
writeInlineDataIntoFile(inlineDataFileWriter, inlineElements);
|
612
|
}// else
|
613
|
|
614
|
}
|
615
|
|
616
|
private void compareElementNameSpaceAttributes(
|
617
|
Stack<NodeRecord> unchangeableNodeStack,
|
618
|
Hashtable<String, String> nameSpaces, Attributes attributes,
|
619
|
String localName, String error) throws SAXException {
|
620
|
// Get element subtree node stack (element node)
|
621
|
NodeRecord elementNode = null;
|
622
|
try {
|
623
|
elementNode = unchangeableNodeStack.pop();
|
624
|
} catch (EmptyStackException ee) {
|
625
|
logMetacat.error("Node stack is empty for element data");
|
626
|
throw new SAXException(error);
|
627
|
}
|
628
|
logMetacat.debug("current node type from xml is ELEMENT");
|
629
|
logMetacat.debug("node type from stack: " + elementNode.getNodeType());
|
630
|
logMetacat.debug("node name from xml document: " + localName);
|
631
|
logMetacat.debug("node name from stack: " + elementNode.getNodeName());
|
632
|
logMetacat.debug("node data from stack: " + elementNode.getNodeData());
|
633
|
logMetacat.debug("node id is: " + elementNode.getNodeId());
|
634
|
// if this node is not element or local name not equal or name space
|
635
|
// not equals, throw an exception
|
636
|
if (!elementNode.getNodeType().equals("ELEMENT")
|
637
|
|| !localName.equals(elementNode.getNodeName()))
|
638
|
// (uri != null && !uri.equals(elementNode.getNodePrefix())))
|
639
|
{
|
640
|
logMetacat.error("Inconsistence happened: ");
|
641
|
logMetacat.error("current node type from xml is ELEMENT");
|
642
|
logMetacat.error("node type from stack: " + elementNode.getNodeType());
|
643
|
logMetacat.error("node name from xml document: " + localName);
|
644
|
logMetacat.error("node name from stack: " + elementNode.getNodeName());
|
645
|
logMetacat.error("node data from stack: " + elementNode.getNodeData());
|
646
|
logMetacat.error("node id is: " + elementNode.getNodeId());
|
647
|
throw new SAXException(error);
|
648
|
}
|
649
|
|
650
|
// compare namespace
|
651
|
Enumeration<String> nameEn = nameSpaces.keys();
|
652
|
while (nameEn.hasMoreElements()) {
|
653
|
// Get namespacke node stack (element node)
|
654
|
NodeRecord nameNode = null;
|
655
|
try {
|
656
|
nameNode = unchangeableNodeStack.pop();
|
657
|
} catch (EmptyStackException ee) {
|
658
|
logMetacat.error("Node stack is empty for namespace data");
|
659
|
throw new SAXException(error);
|
660
|
}
|
661
|
|
662
|
String prefixName = nameEn.nextElement();
|
663
|
String nameSpaceUri = nameSpaces.get(prefixName);
|
664
|
if (!nameNode.getNodeType().equals("NAMESPACE")
|
665
|
|| !prefixName.equals(nameNode.getNodeName())
|
666
|
|| !nameSpaceUri.equals(nameNode.getNodeData())) {
|
667
|
logMetacat.error("Inconsistence happened: ");
|
668
|
logMetacat.error("current node type from xml is NAMESPACE");
|
669
|
logMetacat.error("node type from stack: " + nameNode.getNodeType());
|
670
|
logMetacat.error("current node name from xml is: " + prefixName);
|
671
|
logMetacat.error("node name from stack: " + nameNode.getNodeName());
|
672
|
logMetacat.error("current node data from xml is: " + nameSpaceUri);
|
673
|
logMetacat.error("node data from stack: " + nameNode.getNodeData());
|
674
|
logMetacat.error("node id is: " + nameNode.getNodeId());
|
675
|
throw new SAXException(error);
|
676
|
}
|
677
|
|
678
|
}// while
|
679
|
|
680
|
// compare attributes
|
681
|
for (int i = 0; i < attributes.getLength(); i++) {
|
682
|
NodeRecord attriNode = null;
|
683
|
try {
|
684
|
attriNode = unchangeableNodeStack.pop();
|
685
|
|
686
|
} catch (EmptyStackException ee) {
|
687
|
logMetacat.error("Node stack is empty for attribute data");
|
688
|
throw new SAXException(error);
|
689
|
}
|
690
|
String attributeName = attributes.getQName(i);
|
691
|
String attributeValue = attributes.getValue(i);
|
692
|
logMetacat.debug("current node type from xml is ATTRIBUTE ");
|
693
|
logMetacat.debug("node type from stack: " + attriNode.getNodeType());
|
694
|
logMetacat.debug("current node name from xml is: " + attributeName);
|
695
|
logMetacat.debug("node name from stack: " + attriNode.getNodeName());
|
696
|
logMetacat.debug("current node data from xml is: " + attributeValue);
|
697
|
logMetacat.debug("node data from stack: " + attriNode.getNodeData());
|
698
|
logMetacat.debug("node id is: " + attriNode.getNodeId());
|
699
|
|
700
|
if (!attriNode.getNodeType().equals("ATTRIBUTE")
|
701
|
|| !attributeName.equals(attriNode.getNodeName())
|
702
|
|| !attributeValue.equals(attriNode.getNodeData())) {
|
703
|
logMetacat.error("Inconsistence happened: ");
|
704
|
logMetacat.error("current node type from xml is ATTRIBUTE ");
|
705
|
logMetacat.error("node type from stack: " + attriNode.getNodeType());
|
706
|
logMetacat.error("current node name from xml is: " + attributeName);
|
707
|
logMetacat.error("node name from stack: " + attriNode.getNodeName());
|
708
|
logMetacat.error("current node data from xml is: " + attributeValue);
|
709
|
logMetacat.error("node data from stack: " + attriNode.getNodeData());
|
710
|
logMetacat.error("node is: " + attriNode.getNodeId());
|
711
|
throw new SAXException(error);
|
712
|
}
|
713
|
}// for
|
714
|
|
715
|
}
|
716
|
|
717
|
/* method to compare current text node and node in db */
|
718
|
private void compareAccessTextNode(Stack<NodeRecord> nodeStack, StringBuffer text) throws SAXException {
|
719
|
NodeRecord node = null;
|
720
|
// get node from current stack
|
721
|
try {
|
722
|
node = nodeStack.pop();
|
723
|
} catch (EmptyStackException ee) {
|
724
|
logMetacat.error("Node stack is empty for text data in startElement for doc id " + docid);
|
725
|
throw new SAXException("Access rules could not be found in database.");
|
726
|
}
|
727
|
|
728
|
String dbAccessData = node.getNodeData();
|
729
|
String docAccessData = text.toString().trim();
|
730
|
|
731
|
logMetacat.debug("Eml210SAXHandler.compareAccessTextNode - \n" +
|
732
|
"\t access node type from db: " + node.getNodeType() + "\n" +
|
733
|
"\t access node data from db: " + node.getNodeData() + "\n" +
|
734
|
"\t access node data from document: " + text.toString());
|
735
|
|
736
|
if (!node.getNodeType().equals("TEXT")
|
737
|
|| !docAccessData.equals(dbAccessData)) {
|
738
|
logMetacat.warn("Eml210SAXHandler.compareAccessTextNode - Access record mismatch: \n" +
|
739
|
"\t access node type from db: " + node.getNodeType() + "\n" +
|
740
|
"\t access node data from db: " + dbAccessData + "\n" +
|
741
|
"\t access node data from document: " + docAccessData);
|
742
|
|
743
|
throw new SAXException(UPDATEACCESSERROR + " [Eml210SAXHandler.compareAccessTextNode]");
|
744
|
}// if
|
745
|
}
|
746
|
|
747
|
/** SAX Handler that is called for each XML text node */
|
748
|
public void characters(char[] cbuf, int start, int len) throws SAXException {
|
749
|
logMetacat.debug("CHARACTERS");
|
750
|
if (!handleInlineData) {
|
751
|
// buffer all text nodes for same element. This is for if text was
|
752
|
// split into different nodes
|
753
|
textBuffer.append(new String(cbuf, start, len));
|
754
|
// set hittextnode true
|
755
|
hitTextNode = true;
|
756
|
// if text buffer .size is greater than max, write it to db.
|
757
|
// so we can save memory
|
758
|
if (textBuffer.length() > MAXDATACHARS) {
|
759
|
logMetacat.debug("Write text into DB in charaters"
|
760
|
+ " when text buffer size is greater than maxmum number");
|
761
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.peek();
|
762
|
endNodeId = writeTextForDBSAXNode(endNodeId, textBuffer, currentNode);
|
763
|
textBuffer = null;
|
764
|
textBuffer = new StringBuffer();
|
765
|
}
|
766
|
} else {
|
767
|
// this is inline data and write file system directly
|
768
|
// we don't need to buffer it.
|
769
|
StringBuffer inlineText = new StringBuffer();
|
770
|
inlineText.append(new String(cbuf, start, len));
|
771
|
logMetacat.debug("The inline text data write into file system: "
|
772
|
+ inlineText.toString());
|
773
|
writeInlineDataIntoFile(inlineDataFileWriter, inlineText);
|
774
|
}
|
775
|
}
|
776
|
|
777
|
/** SAX Handler that is called at the end of each XML element */
|
778
|
public void endElement(String uri, String localName, String qName)
|
779
|
throws SAXException {
|
780
|
logMetacat.debug("End ELEMENT " + qName);
|
781
|
|
782
|
if (localName.equals(INLINE) && handleInlineData) {
|
783
|
// Get the node from the stack
|
784
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.pop();
|
785
|
logMetacat.debug("End of inline data");
|
786
|
// close file writer
|
787
|
try {
|
788
|
inlineDataFileWriter.close();
|
789
|
handleInlineData = false;
|
790
|
} catch (IOException ioe) {
|
791
|
throw new SAXException(ioe.getMessage());
|
792
|
}
|
793
|
|
794
|
// write put inline data file name into text buffer (without path)
|
795
|
textBuffer = new StringBuffer(inlineDataFileName);
|
796
|
// write file name into db
|
797
|
endNodeId = writeTextForDBSAXNode(endNodeId, textBuffer, currentNode);
|
798
|
// reset textbuff
|
799
|
textBuffer = null;
|
800
|
textBuffer = new StringBuffer();
|
801
|
return;
|
802
|
}
|
803
|
|
804
|
if (!handleInlineData) {
|
805
|
// Get the node from the stack
|
806
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.pop();
|
807
|
String currentTag = currentNode.getTagName();
|
808
|
|
809
|
// If before the end element, the parser hit text nodes and store
|
810
|
// them into the buffer, write the buffer to data base. The reason
|
811
|
// we put write database here is for xerces some time split text
|
812
|
// node
|
813
|
if (hitTextNode) {
|
814
|
// get access value
|
815
|
String data = null;
|
816
|
// add principal
|
817
|
if (currentTag.equals(PRINCIPAL) && accessRule != null) {
|
818
|
data = (textBuffer.toString()).trim();
|
819
|
accessRule.addPrincipal(data);
|
820
|
|
821
|
} else if (currentTag.equals(PERMISSION) && accessRule != null) {
|
822
|
data = (textBuffer.toString()).trim();
|
823
|
// we combine different a permission into one value
|
824
|
int permission = accessRule.getPermission();
|
825
|
// add permission
|
826
|
if (data.toUpperCase().equals(READSTRING)) {
|
827
|
permission = permission | READ;
|
828
|
} else if (data.toUpperCase().equals(WRITESTRING)) {
|
829
|
permission = permission | WRITE;
|
830
|
} else if (data.toUpperCase().equals(CHMODSTRING)) {
|
831
|
permission = permission | CHMOD;
|
832
|
} else if (data.toUpperCase().equals(ALLSTRING)) {
|
833
|
permission = permission | ALL;
|
834
|
}
|
835
|
accessRule.setPermission(permission);
|
836
|
} else if (currentTag.equals(REFERENCES)
|
837
|
&& (processingTopLevelAccess || processingAdditionalAccess || processingOtherAccess)) {
|
838
|
// get reference
|
839
|
data = (textBuffer.toString()).trim();
|
840
|
// put reference id into accessSection
|
841
|
accessObject.setReferences(data);
|
842
|
|
843
|
} else if (currentTag.equals(URL)) {
|
844
|
// handle online data, make sure its'parent is online
|
845
|
DBSAXNode parentNode = (DBSAXNode) nodeStack.peek();
|
846
|
if (parentNode != null && parentNode.getTagName() != null
|
847
|
&& parentNode.getTagName().equals(ONLINE)) {
|
848
|
// if online data is in local metacat, add it to the
|
849
|
// vector
|
850
|
data = (textBuffer.toString()).trim();
|
851
|
handleOnlineUrlDataFile(data);
|
852
|
|
853
|
}// if
|
854
|
}// else if
|
855
|
|
856
|
// write text to db if it is not inline data
|
857
|
logMetacat.debug("Write text into DB in End Element");
|
858
|
|
859
|
// compare top level access module
|
860
|
if (processingTopLevelAccess && needToCheckAccessModule) {
|
861
|
compareAccessTextNode(currentUnchangeableAccessModuleNodeStack,
|
862
|
textBuffer);
|
863
|
}
|
864
|
// write text node into db
|
865
|
endNodeId = writeTextForDBSAXNode(endNodeId, textBuffer, currentNode);
|
866
|
}
|
867
|
|
868
|
if (needToCheckAccessModule
|
869
|
&& (processingAdditionalAccess || processingOtherAccess || processingTopLevelAccess)) {
|
870
|
// stored the pull out nodes into storedNode stack
|
871
|
NodeRecord nodeElement = new NodeRecord(-2, -2, -2, "TEXT", null,
|
872
|
null, MetacatUtil.normalize(textBuffer.toString()));
|
873
|
storedAccessNodeStack.push(nodeElement);
|
874
|
|
875
|
}
|
876
|
|
877
|
// set hitText false
|
878
|
hitTextNode = false;
|
879
|
// reset textbuff
|
880
|
textBuffer = null;
|
881
|
textBuffer = new StringBuffer();
|
882
|
|
883
|
// hand sub stree stuff
|
884
|
if (!subTreeInfoStack.empty()) {
|
885
|
SubTree tree = subTreeInfoStack.peek();// get last
|
886
|
// subtree
|
887
|
if (tree != null && tree.getStartElementName() != null
|
888
|
&& (tree.getStartElementName()).equals(currentTag)) {
|
889
|
// find the end of sub tree and set the end node id
|
890
|
tree.setEndNodeId(endNodeId);
|
891
|
// add the subtree into the final store palace
|
892
|
subTreeList.add(tree);
|
893
|
// get rid of it from stack
|
894
|
subTreeInfoStack.pop();
|
895
|
}// if
|
896
|
}// if
|
897
|
|
898
|
// access stuff
|
899
|
if (currentTag.equals(ALLOW) || currentTag.equals(DENY)) {
|
900
|
// finish parser access rule and assign it to new one
|
901
|
AccessRule newRule = accessRule;
|
902
|
// add the new rule to access section object
|
903
|
accessObject.addAccessRule(newRule);
|
904
|
// reset access rule
|
905
|
accessRule = null;
|
906
|
} else if (currentTag.equals(ACCESS)) {
|
907
|
// finish parsing an access section and assign it to new one
|
908
|
DBSAXNode parentNode = (DBSAXNode) nodeStack.peek();
|
909
|
|
910
|
accessObject.setEndNodeId(endNodeId);
|
911
|
|
912
|
if (parentNode != null && parentNode.getTagName() != null
|
913
|
&& parentNode.getTagName().equals(DISTRIBUTION)) {
|
914
|
describesId.add(String.valueOf(distributionIndex));
|
915
|
currentDistributionSection.setAccessSection(accessObject);
|
916
|
}
|
917
|
|
918
|
AccessSection newAccessObject = accessObject;
|
919
|
|
920
|
if (newAccessObject != null) {
|
921
|
|
922
|
// add the accessSection into a vector to store it
|
923
|
// if it is not a reference, need to store it
|
924
|
if (newAccessObject.getReferences() == null) {
|
925
|
|
926
|
newAccessObject.setStoredTmpNodeStack(storedAccessNodeStack);
|
927
|
accessObjectList.add(newAccessObject);
|
928
|
}
|
929
|
if (processingTopLevelAccess) {
|
930
|
|
931
|
// top level access control will handle whole document
|
932
|
// -docid
|
933
|
topLevelAccessControlMap.put(docid, newAccessObject);
|
934
|
// reset processtopleveraccess tag
|
935
|
|
936
|
}// if
|
937
|
else if (processingAdditionalAccess) {
|
938
|
// for additional control put everything in describes
|
939
|
// value
|
940
|
// and access object into hash
|
941
|
for (int i = 0; i < describesId.size(); i++) {
|
942
|
|
943
|
String subId = describesId.elementAt(i);
|
944
|
if (subId != null) {
|
945
|
additionalAccessControlMap.put(subId, newAccessObject);
|
946
|
}// if
|
947
|
}// for
|
948
|
// add this hashtable in to vector
|
949
|
|
950
|
additionalAccessMapList.add(additionalAccessControlMap);
|
951
|
// reset this hashtable in order to store another
|
952
|
// additional
|
953
|
// accesscontrol
|
954
|
additionalAccessControlMap = null;
|
955
|
additionalAccessControlMap = new Hashtable<String, AccessSection>();
|
956
|
}// if
|
957
|
|
958
|
}// if
|
959
|
// check if access node stack is empty after parsing top access
|
960
|
// module
|
961
|
|
962
|
if (needToCheckAccessModule && processingTopLevelAccess
|
963
|
&& !currentUnchangeableAccessModuleNodeStack.isEmpty()) {
|
964
|
|
965
|
logMetacat.error("Access node stack is not empty after "
|
966
|
+ "parsing access subtree");
|
967
|
throw new SAXException(UPDATEACCESSERROR);
|
968
|
|
969
|
}
|
970
|
// reset access section object
|
971
|
|
972
|
accessObject = null;
|
973
|
|
974
|
// reset tmp stored node stack
|
975
|
storedAccessNodeStack = null;
|
976
|
storedAccessNodeStack = new Stack<NodeRecord>();
|
977
|
|
978
|
// reset flag
|
979
|
processingAdditionalAccess = false;
|
980
|
processingTopLevelAccess = false;
|
981
|
processingOtherAccess = false;
|
982
|
|
983
|
} else if (currentTag.equals(DISTRIBUTION)) {
|
984
|
// If the current Distribution is inline or data and it doesn't have an access section
|
985
|
// we use the top level access section (if it exists)
|
986
|
if ((currentDistributionSection.getDistributionType() == DistributionSection.DATA_DISTRIBUTION
|
987
|
|| currentDistributionSection.getDistributionType() == DistributionSection.INLINE_DATA_DISTRIBUTION)
|
988
|
&& currentDistributionSection.getAccessSection() == null
|
989
|
&& topLevelAccessControlMap.size() > 0) {
|
990
|
|
991
|
AccessSection accessSection = new AccessSection();
|
992
|
accessSection.setDocId(docid);
|
993
|
AccessSection topLevelAccess = topLevelAccessControlMap.get(docid);
|
994
|
accessSection.setPermissionOrder(topLevelAccess.getPermissionOrder());
|
995
|
Vector<AccessRule> accessRuleList = topLevelAccess.getAccessRules();
|
996
|
for (AccessRule accessRule : accessRuleList) {
|
997
|
accessSection.addAccessRule(accessRule);
|
998
|
}
|
999
|
currentDistributionSection.setAccessSection(accessSection);
|
1000
|
}
|
1001
|
if (currentDistributionSection.getAccessSection() != null) {
|
1002
|
currentDistributionSection.getAccessSection().setDataFileName(currentDistributionSection.getDataFileName());
|
1003
|
}
|
1004
|
allDistributionSections.add(currentDistributionSection);
|
1005
|
currentDistributionSection = null;
|
1006
|
describesId = null;
|
1007
|
describesId = new Vector<String>();
|
1008
|
}
|
1009
|
} else {
|
1010
|
// this is in inline part
|
1011
|
StringBuffer endElement = new StringBuffer();
|
1012
|
endElement.append("</");
|
1013
|
endElement.append(qName);
|
1014
|
endElement.append(">");
|
1015
|
logMetacat.debug("inline endElement: " + endElement.toString());
|
1016
|
writeInlineDataIntoFile(inlineDataFileWriter, endElement);
|
1017
|
}
|
1018
|
}
|
1019
|
|
1020
|
/**
|
1021
|
* SAX Handler that receives notification of comments in the DTD
|
1022
|
*/
|
1023
|
public void comment(char[] ch, int start, int length) throws SAXException {
|
1024
|
logMetacat.debug("COMMENT");
|
1025
|
if (!handleInlineData) {
|
1026
|
if (!processingDTD) {
|
1027
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.peek();
|
1028
|
String str = new String(ch, start, length);
|
1029
|
|
1030
|
// compare top level access module
|
1031
|
if (processingTopLevelAccess && needToCheckAccessModule) {
|
1032
|
compareCommentNode(currentUnchangeableAccessModuleNodeStack, str,
|
1033
|
UPDATEACCESSERROR);
|
1034
|
}
|
1035
|
endNodeId = currentNode.writeChildNodeToDB("COMMENT", null, str, docid);
|
1036
|
if (needToCheckAccessModule
|
1037
|
&& (processingAdditionalAccess || processingOtherAccess || processingTopLevelAccess)) {
|
1038
|
// stored the pull out nodes into storedNode stack
|
1039
|
NodeRecord nodeElement = new NodeRecord(-2, -2, -2, "COMMENT", null,
|
1040
|
null, MetacatUtil.normalize(str));
|
1041
|
storedAccessNodeStack.push(nodeElement);
|
1042
|
|
1043
|
}
|
1044
|
}
|
1045
|
} else {
|
1046
|
// inline data comment
|
1047
|
StringBuffer inlineComment = new StringBuffer();
|
1048
|
inlineComment.append("<!--");
|
1049
|
inlineComment.append(new String(ch, start, length));
|
1050
|
inlineComment.append("-->");
|
1051
|
logMetacat.debug("inline data comment: " + inlineComment.toString());
|
1052
|
writeInlineDataIntoFile(inlineDataFileWriter, inlineComment);
|
1053
|
}
|
1054
|
}
|
1055
|
|
1056
|
/* Compare comment from xml and db */
|
1057
|
private void compareCommentNode(Stack<NodeRecord> nodeStack, String string,
|
1058
|
String error) throws SAXException {
|
1059
|
NodeRecord node = null;
|
1060
|
try {
|
1061
|
node = nodeStack.pop();
|
1062
|
} catch (EmptyStackException ee) {
|
1063
|
logMetacat.error("the stack is empty for comment data");
|
1064
|
throw new SAXException(error);
|
1065
|
}
|
1066
|
logMetacat.debug("current node type from xml is COMMENT");
|
1067
|
logMetacat.debug("node type from stack: " + node.getNodeType());
|
1068
|
logMetacat.debug("current node data from xml is: " + string);
|
1069
|
logMetacat.debug("node data from stack: " + node.getNodeData());
|
1070
|
logMetacat.debug("node is from stack: " + node.getNodeId());
|
1071
|
// if not consistent terminate program and throw a exception
|
1072
|
if (!node.getNodeType().equals("COMMENT") || !string.equals(node.getNodeData())) {
|
1073
|
logMetacat.error("Inconsistence happened: ");
|
1074
|
logMetacat.error("current node type from xml is COMMENT");
|
1075
|
logMetacat.error("node type from stack: " + node.getNodeType());
|
1076
|
logMetacat.error("current node data from xml is: " + string);
|
1077
|
logMetacat.error("node data from stack: " + node.getNodeData());
|
1078
|
logMetacat.error("node is from stack: " + node.getNodeId());
|
1079
|
throw new SAXException(error);
|
1080
|
}// if
|
1081
|
}
|
1082
|
|
1083
|
/**
|
1084
|
* SAX Handler called once for each processing instruction found: node that
|
1085
|
* PI may occur before or after the root element.
|
1086
|
*/
|
1087
|
public void processingInstruction(String target, String data) throws SAXException {
|
1088
|
logMetacat.debug("PI");
|
1089
|
if (!handleInlineData) {
|
1090
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.peek();
|
1091
|
endNodeId = currentNode.writeChildNodeToDB("PI", target, data, docid);
|
1092
|
} else {
|
1093
|
StringBuffer inlinePI = new StringBuffer();
|
1094
|
inlinePI.append("<?");
|
1095
|
inlinePI.append(target);
|
1096
|
inlinePI.append(" ");
|
1097
|
inlinePI.append(data);
|
1098
|
inlinePI.append("?>");
|
1099
|
logMetacat.debug("inline data pi is: " + inlinePI.toString());
|
1100
|
writeInlineDataIntoFile(inlineDataFileWriter, inlinePI);
|
1101
|
}
|
1102
|
}
|
1103
|
|
1104
|
/** SAX Handler that is called at the start of Namespace */
|
1105
|
public void startPrefixMapping(String prefix, String uri) throws SAXException {
|
1106
|
logMetacat.debug("NAMESPACE");
|
1107
|
if (!handleInlineData) {
|
1108
|
namespaces.put(prefix, uri);
|
1109
|
} else {
|
1110
|
inlineDataNameSpace.put(prefix, uri);
|
1111
|
}
|
1112
|
}
|
1113
|
|
1114
|
/**
|
1115
|
* SAX Handler that is called for each XML text node that is Ignorable white
|
1116
|
* space
|
1117
|
*/
|
1118
|
public void ignorableWhitespace(char[] cbuf, int start, int len) throws SAXException {
|
1119
|
// When validation is turned "on", white spaces are reported here
|
1120
|
// When validation is turned "off" white spaces are not reported here,
|
1121
|
// but through characters() callback
|
1122
|
logMetacat.debug("IGNORABLEWHITESPACE");
|
1123
|
if (!handleInlineData) {
|
1124
|
DBSAXNode currentNode = (DBSAXNode) nodeStack.peek();
|
1125
|
String data = new String(cbuf, start, len);
|
1126
|
// compare whitespace in access top module
|
1127
|
if (processingTopLevelAccess && needToCheckAccessModule) {
|
1128
|
compareWhiteSpace(currentUnchangeableAccessModuleNodeStack, data,
|
1129
|
UPDATEACCESSERROR);
|
1130
|
}
|
1131
|
// Write the content of the node to the database
|
1132
|
if (needToCheckAccessModule
|
1133
|
&& (processingAdditionalAccess || processingOtherAccess || processingTopLevelAccess)) {
|
1134
|
// stored the pull out nodes into storedNode stack
|
1135
|
NodeRecord nodeElement = new NodeRecord(-2, -2, -2, "TEXT", null,
|
1136
|
null, MetacatUtil.normalize(data));
|
1137
|
storedAccessNodeStack.push(nodeElement);
|
1138
|
|
1139
|
}
|
1140
|
endNodeId = currentNode.writeChildNodeToDB("TEXT", null, data, docid);
|
1141
|
} else {
|
1142
|
// This is inline data write to file directly
|
1143
|
StringBuffer inlineWhiteSpace = new StringBuffer(new String(cbuf, start, len));
|
1144
|
writeInlineDataIntoFile(inlineDataFileWriter, inlineWhiteSpace);
|
1145
|
}
|
1146
|
|
1147
|
}
|
1148
|
|
1149
|
/* Compare whitespace from xml and db */
|
1150
|
private void compareWhiteSpace(Stack<NodeRecord> nodeStack, String string,
|
1151
|
String error) throws SAXException {
|
1152
|
NodeRecord node = null;
|
1153
|
try {
|
1154
|
node = nodeStack.pop();
|
1155
|
} catch (EmptyStackException ee) {
|
1156
|
logMetacat.error("the stack is empty for whitespace data");
|
1157
|
throw new SAXException(error);
|
1158
|
}
|
1159
|
if (!node.getNodeType().equals("TEXT") || !string.equals(node.getNodeData())) {
|
1160
|
logMetacat.error("Inconsistence happened: ");
|
1161
|
logMetacat.error("current node type from xml is WHITESPACE TEXT");
|
1162
|
logMetacat.error("node type from stack: " + node.getNodeType());
|
1163
|
logMetacat.error("current node data from xml is: " + string);
|
1164
|
logMetacat.error("node data from stack: " + node.getNodeData());
|
1165
|
logMetacat.error("node is from stack: " + node.getNodeId());
|
1166
|
throw new SAXException(error);
|
1167
|
}// if
|
1168
|
}
|
1169
|
|
1170
|
/** SAX Handler that receives notification of end of the document */
|
1171
|
public void endDocument() throws SAXException {
|
1172
|
logMetacat.debug("end Document");
|
1173
|
// There are some unchangable subtree didn't be compare
|
1174
|
// This maybe cause user change the subtree id
|
1175
|
if (!super.getIsRevisionDoc()) {
|
1176
|
// write access rule to db
|
1177
|
writeAccessRuleToDB();
|
1178
|
// delete relation table
|
1179
|
deleteRelations();
|
1180
|
// write relations
|
1181
|
for (int i = 0; i < onlineDataFileIdInRelationVector.size(); i++) {
|
1182
|
String id = onlineDataFileIdInRelationVector.elementAt(i);
|
1183
|
writeOnlineDataFileIdIntoRelationTable(id);
|
1184
|
}
|
1185
|
}
|
1186
|
}
|
1187
|
|
1188
|
/* The method to write all access rule into db */
|
1189
|
private void writeAccessRuleToDB() throws SAXException {
|
1190
|
// Delete old permssion
|
1191
|
deletePermissionsInAccessTable(docid);
|
1192
|
// write top leve access rule
|
1193
|
writeTopLevelAccessRuleToDB();
|
1194
|
// write additional access rule
|
1195
|
// writeAdditionalAccessRuleToDB();
|
1196
|
writeAdditionalAccessRulesToDB();
|
1197
|
}// writeAccessRuleToDB
|
1198
|
|
1199
|
/* The method to write top level access rule into db. */
|
1200
|
private void writeTopLevelAccessRuleToDB() throws SAXException {
|
1201
|
// for top document level
|
1202
|
AccessSection accessSection = topLevelAccessControlMap.get(docid);
|
1203
|
boolean top = true;
|
1204
|
String subSectionId = null;
|
1205
|
if (accessSection != null) {
|
1206
|
AccessSection accessSectionObj = accessSection;
|
1207
|
|
1208
|
// if accessSection is not null and is not reference
|
1209
|
if (accessSectionObj.getReferences() == null) {
|
1210
|
// write the top level access module into xml_accesssubtree to
|
1211
|
// store info and then when update to check if the user can
|
1212
|
// update it or not
|
1213
|
deleteAccessSubTreeRecord(docid);
|
1214
|
writeAccessSubTreeIntoDB(accessSectionObj, TOPLEVEL);
|
1215
|
|
1216
|
// write access section into xml_access table
|
1217
|
writeGivenAccessRuleIntoDB(accessSectionObj, top, subSectionId);
|
1218
|
// write online data file into xml_access too.
|
1219
|
// for (int i= 0; i <onlineDataFileIdInTopAccessVector.size();
|
1220
|
// i++)
|
1221
|
// {
|
1222
|
// String id = onlineDataFileIdInTopAccessVector.elementAt(i);
|
1223
|
// writeAccessRuleForRelatedDataFileIntoDB(accessSectionObj,
|
1224
|
// id);
|
1225
|
// }
|
1226
|
|
1227
|
} else {
|
1228
|
|
1229
|
// this is a reference and go trough the vector which contains
|
1230
|
// all access object
|
1231
|
String referenceId = accessSectionObj.getReferences();
|
1232
|
boolean findAccessObject = false;
|
1233
|
logMetacat.debug("referered id for top access: " + referenceId);
|
1234
|
for (int i = 0; i < accessObjectList.size(); i++) {
|
1235
|
AccessSection accessObj = accessObjectList.elementAt(i);
|
1236
|
String accessObjId = accessObj.getSubTreeId();
|
1237
|
if (referenceId != null && accessObj != null
|
1238
|
&& referenceId.equals(accessObjId)) {
|
1239
|
// make sure the user didn't change any thing in this
|
1240
|
// access moduel
|
1241
|
// too if user doesn't have all permission
|
1242
|
if (needToCheckAccessModule) {
|
1243
|
|
1244
|
Stack<NodeRecord> newStack = accessObj
|
1245
|
.getStoredTmpNodeStack();
|
1246
|
// revise order
|
1247
|
newStack = DocumentUtil.reviseStack(newStack);
|
1248
|
// go throught the vector of
|
1249
|
// unChangeableAccessSubtreevector
|
1250
|
// and find the one whose id is as same as
|
1251
|
// referenceid
|
1252
|
AccessSection oldAccessObj = getAccessSectionFromUnchangableAccessVector(referenceId);
|
1253
|
// if oldAccessObj is null something is wrong
|
1254
|
if (oldAccessObj == null) {
|
1255
|
throw new SAXException(UPDATEACCESSERROR);
|
1256
|
}// if
|
1257
|
else {
|
1258
|
// Get the node stack from old access obj
|
1259
|
Stack<NodeRecord> oldStack = oldAccessObj
|
1260
|
.getSubTreeNodeStack();
|
1261
|
compareNodeStacks(newStack, oldStack);
|
1262
|
}// else
|
1263
|
}// if
|
1264
|
// write accessobject into db
|
1265
|
writeGivenAccessRuleIntoDB(accessObj, top, subSectionId);
|
1266
|
// write online data file into xml_access too.
|
1267
|
// for (int j= 0; j
|
1268
|
// <onlineDataFileIdInTopAccessVector.size(); j++)
|
1269
|
// {
|
1270
|
// String id =
|
1271
|
// onlineDataFileIdInTopAccessVector.elementAt(j);
|
1272
|
// writeAccessRuleForRelatedDataFileIntoDB(accessSectionObj,
|
1273
|
// id);
|
1274
|
// }
|
1275
|
|
1276
|
// write the reference access into xml_accesssubtree
|
1277
|
// too write the top level access module into
|
1278
|
// xml_accesssubtree to store info and then when update
|
1279
|
// to check if the user can update it or not
|
1280
|
deleteAccessSubTreeRecord(docid);
|
1281
|
writeAccessSubTreeIntoDB(accessSectionObj, TOPLEVEL);
|
1282
|
writeAccessSubTreeIntoDB(accessObj, SUBTREELEVEL);
|
1283
|
findAccessObject = true;
|
1284
|
break;
|
1285
|
}
|
1286
|
}// for
|
1287
|
// if we couldn't find an access subtree id for this reference
|
1288
|
// id
|
1289
|
if (!findAccessObject) {
|
1290
|
throw new SAXException("The referenceid: " + referenceId
|
1291
|
+ " is not access subtree");
|
1292
|
}// if
|
1293
|
}// else
|
1294
|
|
1295
|
}// if
|
1296
|
else {
|
1297
|
// couldn't find a access section object
|
1298
|
logMetacat.warn("couldn't find access control for document: " + docid);
|
1299
|
}
|
1300
|
|
1301
|
}// writeTopLevelAccessRuletoDB
|
1302
|
|
1303
|
/* Given a subtree id and find the responding access section */
|
1304
|
private AccessSection getAccessSectionFromUnchangableAccessVector(String id) {
|
1305
|
AccessSection result = null;
|
1306
|
// Makse sure the id
|
1307
|
if (id == null || id.equals("")) {
|
1308
|
return result;
|
1309
|
}
|
1310
|
// go throught vector and find the list
|
1311
|
for (int i = 0; i < unChangeableAccessSubTreeVector.size(); i++) {
|
1312
|
AccessSection accessObj = unChangeableAccessSubTreeVector.elementAt(i);
|
1313
|
if (accessObj.getSubTreeId() != null && (accessObj.getSubTreeId()).equals(id)) {
|
1314
|
result = accessObj;
|
1315
|
}// if
|
1316
|
}// for
|
1317
|
return result;
|
1318
|
}// getAccessSectionFromUnchangableAccessVector
|
1319
|
|
1320
|
/* Compare two node stacks to see if they are same */
|
1321
|
private void compareNodeStacks(Stack<NodeRecord> stack1, Stack<NodeRecord> stack2)
|
1322
|
throws SAXException {
|
1323
|
// make sure stack1 and stack2 are not empty
|
1324
|
if (stack1.isEmpty() || stack2.isEmpty()) {
|
1325
|
logMetacat.error("Because stack is empty!");
|
1326
|
throw new SAXException(UPDATEACCESSERROR);
|
1327
|
}
|
1328
|
// go throw two stacks and compare every element
|
1329
|
while (!stack1.isEmpty()) {
|
1330
|
// Pop an element from stack1
|
1331
|
NodeRecord record1 = stack1.pop();
|
1332
|
// Pop an element from stack2(stack 2 maybe empty)
|
1333
|
NodeRecord record2 = null;
|
1334
|
try {
|
1335
|
record2 = stack2.pop();
|
1336
|
} catch (EmptyStackException ee) {
|
1337
|
logMetacat.error("Node stack2 is empty but stack1 isn't!");
|
1338
|
throw new SAXException(UPDATEACCESSERROR);
|
1339
|
}
|
1340
|
// if two records are not same throw a exception
|
1341
|
if (!record1.contentEquals(record2)) {
|
1342
|
logMetacat.error("Two records from new and old stack are not " + "same!");
|
1343
|
throw new SAXException(UPDATEACCESSERROR);
|
1344
|
}// if
|
1345
|
}// while
|
1346
|
|
1347
|
// now stack1 is empty and we should make sure stack2 is empty too
|
1348
|
if (!stack2.isEmpty()) {
|
1349
|
logMetacat
|
1350
|
.error("stack2 still has some elements while stack " + "is empty! ");
|
1351
|
throw new SAXException(UPDATEACCESSERROR);
|
1352
|
}// if
|
1353
|
}// comparingNodeStacks
|
1354
|
|
1355
|
/* The method to write additional access rule into db. */
|
1356
|
private void writeAdditionalAccessRulesToDB() throws SAXException {
|
1357
|
|
1358
|
// Iterate through every distribution and write access sections for data and inline
|
1359
|
// types to the database
|
1360
|
for (DistributionSection distributionSection : allDistributionSections) {
|
1361
|
// we're only interested in data and inline distributions
|
1362
|
int distributionType = distributionSection.getDistributionType();
|
1363
|
if (distributionType == DistributionSection.DATA_DISTRIBUTION
|
1364
|
|| distributionType == DistributionSection.INLINE_DATA_DISTRIBUTION) {
|
1365
|
AccessSection accessSection = distributionSection.getAccessSection();
|
1366
|
|
1367
|
// If the distribution doesn't have an access section, we continue.
|
1368
|
if (accessSection == null) {
|
1369
|
continue;
|
1370
|
}
|
1371
|
|
1372
|
// We want to check file permissions for all online data updates and inserts, or for
|
1373
|
// inline updates.
|
1374
|
// if (distributionType == DistributionSection.DATA_DISTRIBUTION
|
1375
|
// || (distributionType == DistributionSection.INLINE_DATA_DISTRIBUTION && action == "UPDATE")) {
|
1376
|
|
1377
|
if (distributionType == DistributionSection.DATA_DISTRIBUTION) {
|
1378
|
try {
|
1379
|
PermissionController controller = new PermissionController(
|
1380
|
distributionSection.getDataFileName(), false);
|
1381
|
if (AccessionNumber.accNumberUsed(docid)
|
1382
|
&& !controller.hasPermission(user, groups, "WRITE")) {
|
1383
|
throw new SAXException(UPDATEACCESSERROR);
|
1384
|
}
|
1385
|
} catch (SQLException sqle) {
|
1386
|
throw new SAXException(
|
1387
|
"Database error checking user permissions: "
|
1388
|
+ sqle.getMessage());
|
1389
|
} catch (Exception e) {
|
1390
|
throw new SAXException(
|
1391
|
"General error checking user permissions: "
|
1392
|
+ e.getMessage());
|
1393
|
}
|
1394
|
} else if (distributionType == DistributionSection.INLINE_DATA_DISTRIBUTION && action == "UPDATE") {
|
1395
|
try {
|
1396
|
PermissionController controller = new PermissionController(
|
1397
|
docid, false);
|
1398
|
|
1399
|
if (!controller.hasPermission(user, groups, "WRITE")) {
|
1400
|
throw new SAXException(UPDATEACCESSERROR);
|
1401
|
}
|
1402
|
} catch (SQLException sqle) {
|
1403
|
throw new SAXException(
|
1404
|
"Database error checking user permissions: "
|
1405
|
+ sqle.getMessage());
|
1406
|
} catch (Exception e) {
|
1407
|
throw new SAXException(
|
1408
|
"General error checking user permissions: "
|
1409
|
+ e.getMessage());
|
1410
|
}
|
1411
|
}
|
1412
|
|
1413
|
String subSectionId = Integer.toString(distributionSection.getDistributionId());
|
1414
|
writeGivenAccessRuleIntoDB(accessSection, false, subSectionId);
|
1415
|
}
|
1416
|
|
1417
|
}
|
1418
|
|
1419
|
|
1420
|
}
|
1421
|
|
1422
|
/* Write a given access rule into db */
|
1423
|
private void writeGivenAccessRuleIntoDB(AccessSection accessSection,
|
1424
|
boolean topLevel, String subSectionId) throws SAXException {
|
1425
|
if (accessSection == null) {
|
1426
|
throw new SAXException("The access object is null");
|
1427
|
}
|
1428
|
|
1429
|
String permOrder = accessSection.getPermissionOrder();
|
1430
|
String sql = null;
|
1431
|
PreparedStatement pstmt = null;
|
1432
|
if (topLevel) {
|
1433
|
sql = "INSERT INTO xml_access (docid, principal_name, permission, "
|
1434
|
+ "perm_type, perm_order, accessfileid) VALUES "
|
1435
|
+ " (?, ?, ?, ?, ?, ?)";
|
1436
|
} else {
|
1437
|
sql = "INSERT INTO xml_access (docid,principal_name, "
|
1438
|
+ "permission, perm_type, perm_order, accessfileid, subtreeid"
|
1439
|
+ ") VALUES" + " (?, ?, ?, ?, ?, ?, ?)";
|
1440
|
}
|
1441
|
try {
|
1442
|
|
1443
|
pstmt = connection.prepareStatement(sql);
|
1444
|
// Increase DBConnection usage count
|
1445
|
connection.increaseUsageCount(1);
|
1446
|
// Bind the values to the query
|
1447
|
pstmt.setString(6, docid);
|
1448
|
logMetacat.debug("Accessfileid in accesstable: " + docid);
|
1449
|
pstmt.setString(5, permOrder);
|
1450
|
logMetacat.debug("PermOder in accesstable: " + permOrder);
|
1451
|
// if it is not top level, set subsection id
|
1452
|
if (topLevel) {
|
1453
|
pstmt.setString(1, docid);
|
1454
|
logMetacat.debug("Docid in accesstable: " + docid);
|
1455
|
}
|
1456
|
if (!topLevel) {
|
1457
|
pstmt.setString(1, accessSection.getDataFileName());
|
1458
|
logMetacat.debug("Docid in accesstable: " + inlineDataFileName);
|
1459
|
|
1460
|
// for subtree should specify the
|
1461
|
if (subSectionId == null) {
|
1462
|
throw new SAXException("The subsection is null");
|
1463
|
}
|
1464
|
|
1465
|
pstmt.setString(7, subSectionId);
|
1466
|
logMetacat.debug("SubSectionId in accesstable: " + subSectionId);
|
1467
|
}
|
1468
|
|
1469
|
Vector<AccessRule> accessRules = accessSection.getAccessRules();
|
1470
|
// go through every rule
|
1471
|
for (int i = 0; i < accessRules.size(); i++) {
|
1472
|
AccessRule rule = accessRules.elementAt(i);
|
1473
|
String permType = rule.getPermissionType();
|
1474
|
int permission = rule.getPermission();
|
1475
|
pstmt.setInt(3, permission);
|
1476
|
logMetacat.debug("permission in accesstable: " + permission);
|
1477
|
pstmt.setString(4, permType);
|
1478
|
logMetacat.debug("Permtype in accesstable: " + permType);
|
1479
|
// go through every principle in rule
|
1480
|
Vector<String> nameVector = rule.getPrincipal();
|
1481
|
for (int j = 0; j < nameVector.size(); j++) {
|
1482
|
String prName = nameVector.elementAt(j);
|
1483
|
pstmt.setString(2, prName);
|
1484
|
logMetacat.debug("Principal in accesstable: " + prName);
|
1485
|
logMetacat.debug("running sql: " + pstmt.toString());
|
1486
|
pstmt.execute();
|
1487
|
}// for
|
1488
|
}// for
|
1489
|
pstmt.close();
|
1490
|
}// try
|
1491
|
catch (SQLException e) {
|
1492
|
throw new SAXException("EMLSAXHandler.writeAccessRuletoDB(): "
|
1493
|
+ e.getMessage());
|
1494
|
}// catch
|
1495
|
finally {
|
1496
|
try {
|
1497
|
pstmt.close();
|
1498
|
} catch (SQLException ee) {
|
1499
|
throw new SAXException("EMLSAXHandler.writeAccessRuletoDB(): "
|
1500
|
+ ee.getMessage());
|
1501
|
}
|
1502
|
}// finally
|
1503
|
|
1504
|
}// writeGivenAccessRuleIntoDB
|
1505
|
|
1506
|
/* Write a gaven access rule into db */
|
1507
|
private void writeAccessRuleForRelatedDataFileIntoDB(AccessSection accessSection,
|
1508
|
String dataId) throws SAXException {
|
1509
|
if (accessSection == null) {
|
1510
|
throw new SAXException("The access object is null");
|
1511
|
}
|
1512
|
// get rid of rev from dataId
|
1513
|
// dataId = MetacatUtil.getDocIdFromString(dataId);
|
1514
|
String permOrder = accessSection.getPermissionOrder();
|
1515
|
String sql = null;
|
1516
|
PreparedStatement pstmt = null;
|
1517
|
sql = "INSERT INTO xml_access (docid, principal_name, permission, "
|
1518
|
+ "perm_type, perm_order, accessfileid) VALUES " + " (?, ?, ?, ?, ?, ?)";
|
1519
|
|
1520
|
try {
|
1521
|
|
1522
|
pstmt = connection.prepareStatement(sql);
|
1523
|
// Increase DBConnection usage count
|
1524
|
connection.increaseUsageCount(1);
|
1525
|
// Bind the values to the query
|
1526
|
pstmt.setString(1, dataId);
|
1527
|
logMetacat.debug("Docid in accesstable: " + docid);
|
1528
|
pstmt.setString(6, docid);
|
1529
|
logMetacat.debug("Accessfileid in accesstable: " + docid);
|
1530
|
pstmt.setString(5, permOrder);
|
1531
|
logMetacat.debug("PermOder in accesstable: " + permOrder);
|
1532
|
// if it is not top level, set subsection id
|
1533
|
|
1534
|
Vector<AccessRule> accessRules = accessSection.getAccessRules();
|
1535
|
// go through every rule
|
1536
|
for (int i = 0; i < accessRules.size(); i++) {
|
1537
|
AccessRule rule = accessRules.elementAt(i);
|
1538
|
String permType = rule.getPermissionType();
|
1539
|
int permission = rule.getPermission();
|
1540
|
pstmt.setInt(3, permission);
|
1541
|
logMetacat.debug("permission in accesstable: " + permission);
|
1542
|
pstmt.setString(4, permType);
|
1543
|
logMetacat.debug("Permtype in accesstable: " + permType);
|
1544
|
// go through every principle in rule
|
1545
|
Vector<String> nameVector = rule.getPrincipal();
|
1546
|
for (int j = 0; j < nameVector.size(); j++) {
|
1547
|
String prName = nameVector.elementAt(j);
|
1548
|
pstmt.setString(2, prName);
|
1549
|
logMetacat.debug("Principal in accesstable: " + prName);
|
1550
|
logMetacat.debug("running sql: " + pstmt.toString());
|
1551
|
pstmt.execute();
|
1552
|
}// for
|
1553
|
}// for
|
1554
|
pstmt.close();
|
1555
|
}// try
|
1556
|
catch (SQLException e) {
|
1557
|
throw new SAXException("EMLSAXHandler.writeAccessRuletoDB(): "
|
1558
|
+ e.getMessage());
|
1559
|
}// catch
|
1560
|
finally {
|
1561
|
try {
|
1562
|
pstmt.close();
|
1563
|
} catch (SQLException ee) {
|
1564
|
throw new SAXException("EMLSAXHandler.writeAccessRuletoDB(): "
|
1565
|
+ ee.getMessage());
|
1566
|
}
|
1567
|
}// finally
|
1568
|
|
1569
|
}// writeAccessRuleForRalatedDataFileIntoDB
|
1570
|
|
1571
|
/* Delete from db all permission for resources related to @aclid if any. */
|
1572
|
private void deletePermissionsInAccessTable(String aclid) throws SAXException {
|
1573
|
Statement stmt = null;
|
1574
|
try {
|
1575
|
// delete all acl records for resources related to @aclid if any
|
1576
|
stmt = connection.createStatement();
|
1577
|
// Increase DBConnection usage count
|
1578
|
connection.increaseUsageCount(1);
|
1579
|
logMetacat.debug("running sql: DELETE FROM xml_access WHERE accessfileid = '"
|
1580
|
+ aclid + "'");
|
1581
|
stmt.execute("DELETE FROM xml_access WHERE accessfileid = '" + aclid + "'");
|
1582
|
|
1583
|
} catch (SQLException e) {
|
1584
|
throw new SAXException(e.getMessage());
|
1585
|
} finally {
|
1586
|
try {
|
1587
|
stmt.close();
|
1588
|
} catch (SQLException ee) {
|
1589
|
throw new SAXException(ee.getMessage());
|
1590
|
}
|
1591
|
}
|
1592
|
}// deletePermissionsInAccessTable
|
1593
|
|
1594
|
/*
|
1595
|
* In order to make sure only usr has "all" permission can update access
|
1596
|
* subtree in eml document we need to keep access subtree info in
|
1597
|
* xml_accesssubtree table, such as docid, version, startnodeid, endnodeid
|
1598
|
*/
|
1599
|
private void writeAccessSubTreeIntoDB(AccessSection accessSection, String level)
|
1600
|
throws SAXException {
|
1601
|
if (accessSection == null) {
|
1602
|
throw new SAXException("The access object is null");
|
1603
|
}
|
1604
|
|
1605
|
String sql = null;
|
1606
|
PreparedStatement pstmt = null;
|
1607
|
sql = "INSERT INTO xml_accesssubtree (docid, rev, controllevel, "
|
1608
|
+ "subtreeid, startnodeid, endnodeid) VALUES " + " (?, ?, ?, ?, ?, ?)";
|
1609
|
try {
|
1610
|
|
1611
|
pstmt = connection.prepareStatement(sql);
|
1612
|
// Increase DBConnection usage count
|
1613
|
connection.increaseUsageCount(1);
|
1614
|
long startNodeId = accessSection.getStartNodeId();
|
1615
|
long endNodeId = accessSection.getEndNodeId();
|
1616
|
String sectionId = accessSection.getSubTreeId();
|
1617
|
// Bind the values to the query
|
1618
|
pstmt.setString(1, docid);
|
1619
|
logMetacat.debug("Docid in access-subtreetable: " + docid);
|
1620
|
pstmt.setLong(2, (new Long(revision)).longValue());
|
1621
|
logMetacat.debug("rev in accesssubtreetable: " + revision);
|
1622
|
pstmt.setString(3, level);
|
1623
|
logMetacat.debug("contorl level in access-subtree table: " + level);
|
1624
|
pstmt.setString(4, sectionId);
|
1625
|
logMetacat.debug("Subtree id in access-subtree table: " + sectionId);
|
1626
|
pstmt.setLong(5, startNodeId);
|
1627
|
logMetacat.debug("Start node id is: " + startNodeId);
|
1628
|
pstmt.setLong(6, endNodeId);
|
1629
|
logMetacat.debug("End node id is: " + endNodeId);
|
1630
|
logMetacat.debug("running sql: " + pstmt.toString());
|
1631
|
pstmt.execute();
|
1632
|
pstmt.close();
|
1633
|
}// try
|
1634
|
catch (SQLException e) {
|
1635
|
throw new SAXException("EMLSAXHandler.writeAccessSubTreeIntoDB(): "
|
1636
|
+ e.getMessage());
|
1637
|
}// catch
|
1638
|
finally {
|
1639
|
try {
|
1640
|
pstmt.close();
|
1641
|
} catch (SQLException ee) {
|
1642
|
throw new SAXException("EMLSAXHandler.writeAccessSubTreeIntoDB(): "
|
1643
|
+ ee.getMessage());
|
1644
|
}
|
1645
|
}// finally
|
1646
|
|
1647
|
}// writeAccessSubtreeIntoDB
|
1648
|
|
1649
|
/* Delete every access subtree record from xml_accesssubtree. */
|
1650
|
private void deleteAccessSubTreeRecord(String docId) throws SAXException {
|
1651
|
Statement stmt = null;
|
1652
|
try {
|
1653
|
// delete all acl records for resources related to @aclid if any
|
1654
|
stmt = connection.createStatement();
|
1655
|
// Increase DBConnection usage count
|
1656
|
connection.increaseUsageCount(1);
|
1657
|
logMetacat.debug("running sql: DELETE FROM xml_accesssubtree WHERE docid = '"
|
1658
|
+ docId + "'");
|
1659
|
stmt.execute("DELETE FROM xml_accesssubtree WHERE docid = '" + docId + "'");
|
1660
|
|
1661
|
} catch (SQLException e) {
|
1662
|
throw new SAXException(e.getMessage());
|
1663
|
} finally {
|
1664
|
try {
|
1665
|
stmt.close();
|
1666
|
} catch (SQLException ee) {
|
1667
|
throw new SAXException(ee.getMessage());
|
1668
|
}
|
1669
|
}
|
1670
|
}// deleteAccessSubTreeRecord
|
1671
|
|
1672
|
// open a file writer for writing inline data to file
|
1673
|
private FileWriter createInlineDataFileWriter(String fileName) throws SAXException {
|
1674
|
FileWriter writer = null;
|
1675
|
String path;
|
1676
|
try {
|
1677
|
path = PropertyService.getProperty("application.inlinedatafilepath");
|
1678
|
} catch (PropertyNotFoundException pnfe) {
|
1679
|
throw new SAXException(pnfe.getMessage());
|
1680
|
}
|
1681
|
/*
|
1682
|
* File inlineDataDirectory = new File(path);
|
1683
|
*/
|
1684
|
String newFile = path + "/" + fileName;
|
1685
|
logMetacat.debug("inline file name: " + newFile);
|
1686
|
try {
|
1687
|
// true means append
|
1688
|
writer = new FileWriter(newFile, true);
|
1689
|
} catch (IOException ioe) {
|
1690
|
throw new SAXException(ioe.getMessage());
|
1691
|
}
|
1692
|
return writer;
|
1693
|
}
|
1694
|
|
1695
|
// write inline data into file system and return file name(without path)
|
1696
|
private void writeInlineDataIntoFile(FileWriter writer, StringBuffer data)
|
1697
|
throws SAXException {
|
1698
|
try {
|
1699
|
writer.write(data.toString());
|
1700
|
writer.flush();
|
1701
|
} catch (Exception e) {
|
1702
|
throw new SAXException(e.getMessage());
|
1703
|
}
|
1704
|
}
|
1705
|
|
1706
|
/*
|
1707
|
* In eml2, the inline data wouldn't store in db, it store in file system
|
1708
|
* The db stores file name(without path). We got the old file name from db
|
1709
|
* and compare to the new in line data file
|
1710
|
*/
|
1711
|
public boolean compareInlineDataFiles(String oldFileName, String newFileName)
|
1712
|
throws McdbException {
|
1713
|
// this method need to be testing
|
1714
|
boolean same = true;
|
1715
|
String data = null;
|
1716
|
try {
|
1717
|
String path = PropertyService.getProperty("application.inlinedatafilepath");
|
1718
|
// the new file name will look like path/docid.rev.2
|
1719
|
File inlineDataDirectory = new File(path);
|
1720
|
File oldDataFile = new File(inlineDataDirectory, oldFileName);
|
1721
|
File newDataFile = new File(inlineDataDirectory, newFileName);
|
1722
|
|
1723
|
FileReader oldFileReader = new FileReader(oldDataFile);
|
1724
|
BufferedReader oldStringReader = new BufferedReader(oldFileReader);
|
1725
|
FileReader newFileReader = new FileReader(newDataFile);
|
1726
|
BufferedReader newStringReader = new BufferedReader(newFileReader);
|
1727
|
// read first line of data
|
1728
|
String oldString = oldStringReader.readLine();
|
1729
|
String newString = newStringReader.readLine();
|
1730
|
|
1731
|
// at the end oldstring will be null
|
1732
|
while (oldString != null) {
|
1733
|
oldString = oldStringReader.readLine();
|
1734
|
newString = newStringReader.readLine();
|
1735
|
if (!oldString.equals(newString)) {
|
1736
|
same = false;
|
1737
|
break;
|
1738
|
}
|
1739
|
}
|
1740
|
|
1741
|
// if oldString is null but newString is not null, they are same
|
1742
|
if (same) {
|
1743
|
if (newString != null) {
|
1744
|
same = false;
|
1745
|
}
|
1746
|
}
|
1747
|
|
1748
|
} catch (Exception e) {
|
1749
|
throw new McdbException(e.getMessage());
|
1750
|
}
|
1751
|
logMetacat.debug("the inline data retrieved from file: " + data);
|
1752
|
return same;
|
1753
|
}
|
1754
|
|
1755
|
// if xml file failed to upload, we need to call this method to delete
|
1756
|
// the inline data already in file system
|
1757
|
public void deleteInlineFiles() throws SAXException {
|
1758
|
if (!inlineFileIdList.isEmpty()) {
|
1759
|
for (int i = 0; i < inlineFileIdList.size(); i++) {
|
1760
|
String fileName = inlineFileIdList.elementAt(i);
|
1761
|
deleteInlineDataFile(fileName);
|
1762
|
}
|
1763
|
}
|
1764
|
}
|
1765
|
|
1766
|
/* delete the inline data file */
|
1767
|
private void deleteInlineDataFile(String fileName) throws SAXException {
|
1768
|
String path;
|
1769
|
try {
|
1770
|
path = PropertyService.getProperty("application.inlinedatafilepath");
|
1771
|
} catch (PropertyNotFoundException pnfe) {
|
1772
|
throw new SAXException("Could not find inline data file path: "
|
1773
|
+ pnfe.getMessage());
|
1774
|
}
|
1775
|
File inlineDataDirectory = new File(path);
|
1776
|
File newFile = new File(inlineDataDirectory, fileName);
|
1777
|
newFile.delete();
|
1778
|
|
1779
|
}
|
1780
|
|
1781
|
/*
|
1782
|
* In eml2, the inline data wouldn't store in db, it store in file system
|
1783
|
* The db stores file name(without path).
|
1784
|
*/
|
1785
|
public static Reader readInlineDataFromFileSystem(String fileName)
|
1786
|
throws McdbException {
|
1787
|
// BufferedReader stringReader = null;
|
1788
|
FileReader fileReader = null;
|
1789
|
try {
|
1790
|
String path = PropertyService.getProperty("application.inlinedatafilepath");
|
1791
|
// the new file name will look like path/docid.rev.2
|
1792
|
File inlineDataDirectory = new File(path);
|
1793
|
File dataFile = new File(inlineDataDirectory, fileName);
|
1794
|
|
1795
|
fileReader = new FileReader(dataFile);
|
1796
|
// stringReader = new BufferedReader(fileReader);
|
1797
|
} catch (Exception e) {
|
1798
|
throw new McdbException(e.getMessage());
|
1799
|
}
|
1800
|
// return stringReader;
|
1801
|
return fileReader;
|
1802
|
}
|
1803
|
|
1804
|
/* Delete relations */
|
1805
|
private void deleteRelations() throws SAXException {
|
1806
|
PreparedStatement pStmt = null;
|
1807
|
String sql = "DELETE FROM xml_relation where docid =?";
|
1808
|
try {
|
1809
|
pStmt = connection.prepareStatement(sql);
|
1810
|
// bind variable
|
1811
|
pStmt.setString(1, docid);
|
1812
|
// execute query
|
1813
|
pStmt.execute();
|
1814
|
pStmt.close();
|
1815
|
}// try
|
1816
|
catch (SQLException e) {
|
1817
|
throw new SAXException("EMLSAXHandler.deleteRelations(): " + e.getMessage());
|
1818
|
}// catch
|
1819
|
finally {
|
1820
|
try {
|
1821
|
pStmt.close();
|
1822
|
}// try
|
1823
|
catch (SQLException ee) {
|
1824
|
throw new SAXException("EMLSAXHandler.deleteRelations: "
|
1825
|
+ ee.getMessage());
|
1826
|
}// catch
|
1827
|
}// finally
|
1828
|
}
|
1829
|
|
1830
|
/*
|
1831
|
* Write an online data file id into xml_relation table. The dataId
|
1832
|
* shouldnot have the revision
|
1833
|
*/
|
1834
|
private void writeOnlineDataFileIdIntoRelationTable(String dataId)
|
1835
|
throws SAXException {
|
1836
|
PreparedStatement pStmt = null;
|
1837
|
String sql = "INSERT into xml_relation (docid, packagetype, subject, "
|
1838
|
+ "relationship, object) values (?, ?, ?, ?, ?)";
|
1839
|
try {
|
1840
|
pStmt = connection.prepareStatement(sql);
|
1841
|
// bind variable
|
1842
|
pStmt.setString(1, docid);
|
1843
|
pStmt.setString(2, DocumentImpl.EML2_1_0NAMESPACE);
|
1844
|
pStmt.setString(3, docid);
|
1845
|
pStmt.setString(4, RELATION);
|
1846
|
pStmt.setString(5, dataId);
|
1847
|
// execute query
|
1848
|
pStmt.execute();
|
1849
|
pStmt.close();
|
1850
|
}// try
|
1851
|
catch (SQLException e) {
|
1852
|
throw new SAXException(
|
1853
|
"EMLSAXHandler.writeOnlineDataFileIdIntoRelationTable(): "
|
1854
|
+ e.getMessage());
|
1855
|
}// catch
|
1856
|
finally {
|
1857
|
try {
|
1858
|
pStmt.close();
|
1859
|
}// try
|
1860
|
catch (SQLException ee) {
|
1861
|
throw new SAXException(
|
1862
|
"EMLSAXHandler.writeOnlineDataFileIdIntoRelationTable(): "
|
1863
|
+ ee.getMessage());
|
1864
|
}// catch
|
1865
|
}// finally
|
1866
|
|
1867
|
}// writeOnlineDataFileIdIntoRelationTable
|
1868
|
|
1869
|
/*
|
1870
|
* This method will handle data file in online url. If the data file is in
|
1871
|
* ecogrid protocol, then the datafile identifier(without rev)should be put
|
1872
|
* into onlineDataFileRelationVector. The docid in this vector will be
|
1873
|
* insert into xml_relation table in endDocument(). If the data file doesn't
|
1874
|
* exsit in xml_documents or xml_revision table, or the user has all
|
1875
|
* permission to the data file if the docid already existed, the data file
|
1876
|
* id (without rev)will be put into onlineDataFileTopAccessVector. The top
|
1877
|
* access rules specified in this eml document will apply to the data file.
|
1878
|
* NEED to do: We should also need to implement http and ftp. Those external
|
1879
|
* files should be download and assign a data file id to it.
|
1880
|
*/
|
1881
|
private void handleOnlineUrlDataFile(String url) throws SAXException {
|
1882
|
logMetacat.warn("The url is " + url);
|
1883
|
|
1884
|
if (currentDistributionSection == null) {
|
1885
|
throw new SAXException("Trying to set the online file name for a null"
|
1886
|
+ " distribution section");
|
1887
|
}
|
1888
|
|
1889
|
// if the url is not in ecogrid protocol, null will be returned
|
1890
|
String accessionNumber = DocumentUtil.getAccessionNumberFromEcogridIdentifier(url);
|
1891
|
if (accessionNumber == null) {
|
1892
|
// the accession number is null if the url does not references a
|
1893
|
// local data file (url would start with "ecogrid://"
|
1894
|
currentDistributionSection
|
1895
|
.setDistributionType(DistributionSection.ONLINE_DATA_DISTRIBUTION);
|
1896
|
} else {
|
1897
|
// handle ecogrid protocol
|
1898
|
// get rid of revision number to get the docid.
|
1899
|
String docid = DocumentUtil.getDocIdFromAccessionNumber(accessionNumber);
|
1900
|
|
1901
|
currentDistributionSection
|
1902
|
.setDistributionType(DistributionSection.DATA_DISTRIBUTION);
|
1903
|
currentDistributionSection.setDataFileName(docid);
|
1904
|
|
1905
|
// distributionOnlineFileName = docid;
|
1906
|
onlineDataFileIdInRelationVector.add(docid);
|
1907
|
try {
|
1908
|
if (!AccessionNumber.accNumberUsed(docid)) {
|
1909
|
onlineDataFileIdInTopAccessVector.add(docid);
|
1910
|
} else {
|
1911
|
PermissionController controller = new PermissionController(accessionNumber);
|
1912
|
if (controller.hasPermission(user, groups,AccessControlInterface.ALLSTRING)) {
|
1913
|
onlineDataFileIdInTopAccessVector.add(docid);
|
1914
|
} else {
|
1915
|
throw new SAXException(UPDATEACCESSERROR);
|
1916
|
}
|
1917
|
}
|
1918
|
}// try
|
1919
|
catch (Exception e) {
|
1920
|
logMetacat.error("Eorr in "
|
1921
|
+ "Eml210SAXHanlder.handleOnlineUrlDataFile is "
|
1922
|
+ e.getMessage());
|
1923
|
throw new SAXException(e.getMessage());
|
1924
|
}
|
1925
|
}
|
1926
|
}
|
1927
|
}
|