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/**
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* '$RCSfile$'
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* Purpose: a class to handle document info request xml strings
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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: Chad Berkley
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*
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* '$Author$'
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* '$Date$'
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* '$Revision$'
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669
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jones
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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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562
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berkley
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*/
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package edu.ucsb.nceas.metacat;
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import java.util.Stack;
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import java.util.Vector;
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import java.util.Hashtable;
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import org.xml.sax.Attributes;
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import org.xml.sax.SAXException;
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import org.xml.sax.helpers.DefaultHandler;
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import edu.ucsb.nceas.metacat.accesscontrol.AccessControlInterface;
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import edu.ucsb.nceas.metacat.accesscontrol.AccessControlList;
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import edu.ucsb.nceas.metacat.accesscontrol.XMLAccessDAO;
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/**
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* A Class implementing callback methods for the SAX parser to
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* call when processing the XML messages from the replication handler
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*/
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public class DocInfoHandler extends DefaultHandler {
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private Hashtable<String, String> _docinfo = new Hashtable<String, String>();
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private String _currentTag = null;
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private XMLAccessDAO _currentAccessDAO = null;
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private String _accessPermOrder;
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private String _docId;
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private boolean _inPrincipal = false;
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private boolean _inPermission = false;
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private boolean _inAllow = false;
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private boolean _inDeny = false;
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private Vector<XMLAccessDAO> xmlAccessDAOList = new Vector<XMLAccessDAO>();
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private Stack<XMLAccessDAO> xmlAccessDAOStack = new Stack<XMLAccessDAO>();
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public DocInfoHandler() {
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}
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public DocInfoHandler(String docId) {
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_docId = docId;
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}
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/**
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* capture the name of the tag.
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*/
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public void startElement(String uri, String localName, String qName,
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Attributes attributes) throws SAXException {
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_currentTag = localName;
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if (_currentTag.equals("access")) {
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if (_accessPermOrder == null) {
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_accessPermOrder = attributes.getValue("order");
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}
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} else if (_currentTag.equals(AccessControlInterface.ALLOW)) {
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_inAllow = true;
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} else if (_currentTag.equals(AccessControlInterface.DENY)) {
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_inDeny = true;
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} else if (_currentTag.equals(AccessControlInterface.PERMISSION)) {
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_inPermission = true;
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} else if (_currentTag.equals(AccessControlInterface.PRINCIPAL)) {
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// new principal means new DAO for storing it
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_inPrincipal = true;
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_currentAccessDAO = new XMLAccessDAO();
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_currentAccessDAO.setDocId(_docId);
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_currentAccessDAO.setPermOrder(_accessPermOrder);
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if (_inAllow) {
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_currentAccessDAO.setPermType(AccessControlInterface.ALLOW);
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}
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if (_inDeny) {
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_currentAccessDAO.setPermType(AccessControlInterface.DENY);
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}
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}
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}
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public void endElement(String uri, String localName, String qName)
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throws SAXException {
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if (localName.equals(AccessControlInterface.ALLOW)) {
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_inAllow = false;
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} else if (localName.equals(AccessControlInterface.DENY)) {
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_inDeny = false;
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} else if (_currentTag.equals(AccessControlInterface.PRINCIPAL)) {
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_inPrincipal = false;
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xmlAccessDAOStack.push(_currentAccessDAO);
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} else if (_currentTag.equals(AccessControlInterface.PERMISSION)) {
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_inPermission = false;
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}
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//end of a section for allow/deny
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if (
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localName.equals(AccessControlInterface.ALLOW)
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||
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localName.equals(AccessControlInterface.DENY)
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) {
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//get all the DAOs for this section and add them to the overall list
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xmlAccessDAOList.addAll(xmlAccessDAOStack);
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xmlAccessDAOStack.clear();
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}
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}
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/**
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* put the content and the name of the tag into the hashtable. the name of
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* the tag is the key.
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*/
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public void characters(char[] ch, int start, int length) throws SAXException
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{
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_docinfo.put(_currentTag, new String(ch, start, length));
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if (_currentTag.equals(AccessControlInterface.PRINCIPAL) && _inPrincipal) {
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if (_currentAccessDAO != null) {
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_currentAccessDAO.setPrincipalName(new String(ch, start, length));
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}
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} else if (_currentTag.equals(AccessControlInterface.PERMISSION) && _inPermission) {
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if (_currentAccessDAO != null) {
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String permString = new String(ch, start, length);
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Long permLong = Long.valueOf(AccessControlList.intValue(permString));
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//add this permission for each DAO in the stack
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for (int i = 0; i < xmlAccessDAOStack.size(); i++) {
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xmlAccessDAOStack.get(i).addPermission(permLong);
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}
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}
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}
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}
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public Hashtable<String,String> getDocInfo()
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{
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return _docinfo;
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}
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public Vector<XMLAccessDAO> getAccessControlList() {
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return xmlAccessDAOList;
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}
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}
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