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jones
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/**
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203
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* '$RCSfile$'
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* Purpose: A Class that represents a structured query, and can be
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* constructed from an XML serialization conforming to
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* pathquery.dtd. The printSQL() method can be used to print
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* a SQL serialization of the query.
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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
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349
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* Release: @release@
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155
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jones
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*
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203
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* '$Author$'
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* '$Date$'
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* '$Revision$'
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669
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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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155
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jones
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*/
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package edu.ucsb.nceas.metacat;
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899
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berkley
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import edu.ucsb.nceas.dbadapter.*;
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155
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jones
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import java.io.*;
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import java.util.Stack;
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158
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jones
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import java.util.Vector;
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159
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jones
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import java.util.Enumeration;
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155
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jones
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185
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jones
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import org.xml.sax.Attributes;
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158
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jones
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import org.xml.sax.InputSource;
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import org.xml.sax.SAXException;
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import org.xml.sax.SAXParseException;
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185
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jones
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import org.xml.sax.XMLReader;
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import org.xml.sax.helpers.XMLReaderFactory;
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import org.xml.sax.helpers.DefaultHandler;
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155
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402
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berkley
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/**
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172
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jones
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* A Class that represents a structured query, and can be
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* constructed from an XML serialization conforming to @see pathquery.dtd.
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* The printSQL() method can be used to print a SQL serialization of the query.
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155
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jones
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*/
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185
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jones
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public class QuerySpecification extends DefaultHandler {
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155
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jones
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745
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jones
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/** flag determining whether extended query terms are present */
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402
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berkley
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private boolean containsExtendedSQL=false;
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745
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jones
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/** Identifier for this query document */
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158
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jones
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private String meta_file_id;
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745
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jones
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/** Title of this query */
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private String queryTitle;
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/** List of document types to be returned using package back tracing */
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743
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jones
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private Vector returnDocList;
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745
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jones
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/** List of document types to be searched */
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743
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jones
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private Vector filterDocList;
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745
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jones
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/** List of fields to be returned in result set */
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402
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berkley
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private Vector returnFieldList;
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745
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jones
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/** List of users owning documents to be searched */
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535
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jones
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private Vector ownerList;
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745
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jones
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/** List of sites/scopes used to constrain search */
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535
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jones
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private Vector siteList;
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745
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jones
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/** The root query group that contains the recursive query constraints */
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158
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private QueryGroup query = null;
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745
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// Query data structures used temporarily during XML parsing
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158
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private Stack elementStack;
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private Stack queryStack;
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159
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jones
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private String currentValue;
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private String currentPathexpr;
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172
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private String parserName = null;
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private String accNumberSeparator = null;
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berkley
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private static final AbstractDatabase dbAdapter = MetaCatUtil.dbAdapter;
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1301
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tao
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private String userName = null;
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private static final String PUBLIC = "public";
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private String [] group = null;
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899
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berkley
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/**
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* construct an instance of the QuerySpecification class
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*
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172
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jones
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* @param queryspec the XML representation of the query (should conform
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* to pathquery.dtd) as a Reader
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* @param parserName the fully qualified name of a Java Class implementing
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185
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* the org.xml.sax.XMLReader interface
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155
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*/
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535
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jones
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public QuerySpecification( Reader queryspec, String parserName,
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String accNumberSeparator ) throws IOException {
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super();
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berkley
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// Initialize the class variables
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returnDocList = new Vector();
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filterDocList = new Vector();
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elementStack = new Stack();
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queryStack = new Stack();
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berkley
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returnFieldList = new Vector();
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ownerList = new Vector();
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siteList = new Vector();
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this.parserName = parserName;
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this.accNumberSeparator = accNumberSeparator;
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jones
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// Initialize the parser and read the queryspec
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185
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XMLReader parser = initializeParser();
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181
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if (parser == null) {
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System.err.println("SAX parser not instantiated properly.");
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}
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155
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jones
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try {
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parser.parse(new InputSource(queryspec));
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} catch (SAXException e) {
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675
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berkley
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System.err.println("error parsing data in " +
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"QuerySpecification.QuerySpecification");
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180
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System.err.println(e.getMessage());
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155
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jones
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}
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}
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/**
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* construct an instance of the QuerySpecification class
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*
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172
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jones
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* @param queryspec the XML representation of the query (should conform
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* to pathquery.dtd) as a String
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* @param parserName the fully qualified name of a Java Class implementing
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* the org.xml.sax.Parser interface
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155
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jones
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*/
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535
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jones
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public QuerySpecification( String queryspec, String parserName,
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String accNumberSeparator) throws IOException {
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this(new StringReader(queryspec), parserName, accNumberSeparator);
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155
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jones
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}
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1301
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tao
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/**
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* Method to set user name
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*
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* @param myName the user name
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*/
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public void setUserName(String myName)
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{
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this.userName = myName;
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}
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/**
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* Method to set user group
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*
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* @param myGroup the user group
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*/
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public void setGroup(String [] myGroup)
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{
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| 155 |
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this.group = myGroup;
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}
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/*
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* Method to get owner query. If it is owner it has all permission
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*/
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private String createOwerQuery()
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{
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String ownerQuery = null;
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ownerQuery = "SELECT docid FROM xml_documents WHERE user_owner ='" +
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PUBLIC + "'";
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if (userName != null && !userName.equals(""))
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{
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ownerQuery = ownerQuery + " OR user_owner ='"+ userName +"'";
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}
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if (group != null)
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{
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| 173 |
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for (int i = 0; i< group.length; i++)
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| 174 |
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{
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| 175 |
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String groupUint = group[i];
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| 176 |
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if (groupUint != null && !groupUint.equals(""))
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{
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| 178 |
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ownerQuery = ownerQuery +" OR user_owner = '" + groupUint + "'";
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| 179 |
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}//if
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| 180 |
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}//for
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| 181 |
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}
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| 182 |
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MetaCatUtil.debugMessage("OwnerQuery: "+ownerQuery, 30);
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| 183 |
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return ownerQuery;
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| 184 |
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}
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| 185 |
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| 186 |
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/*
|
| 187 |
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* Method to create query for xml_access, this part is to get docid list which
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| 188 |
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* have a allow rule for a given user
|
| 189 |
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*/
|
| 190 |
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private String createAllowRuleQuery()
|
| 191 |
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{
|
| 192 |
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String allowQuery = null;
|
| 193 |
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allowQuery ="SELECT docid from xml_access WHERE ";
|
| 194 |
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// add allow rule for user name
|
| 195 |
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if (userName != null && !userName.equals(""))
|
| 196 |
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{
|
| 197 |
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allowQuery = allowQuery +"(principal_name = '" + userName
|
| 198 |
1304
|
tao
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+"' AND perm_type = 'allow'"
|
| 199 |
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+" AND (permission='4' OR permission='7'))";
|
| 200 |
1301
|
tao
|
}
|
| 201 |
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// add allow rule for public
|
| 202 |
|
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allowQuery = allowQuery +"OR (principal_name = '" + PUBLIC
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| 203 |
1304
|
tao
|
+"' AND perm_type = 'allow'"
|
| 204 |
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+" AND (permission='4' OR permission='7'))";
|
| 205 |
1301
|
tao
|
|
| 206 |
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// add allow rule for group
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| 207 |
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if (group != null)
|
| 208 |
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{
|
| 209 |
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for (int i = 0; i< group.length; i++)
|
| 210 |
|
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{
|
| 211 |
|
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String groupUint = group[i];
|
| 212 |
|
|
if (groupUint != null && !groupUint.equals(""))
|
| 213 |
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{
|
| 214 |
|
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allowQuery = allowQuery +" OR (principal_name = '" + groupUint
|
| 215 |
1304
|
tao
|
+"' AND perm_type = 'allow'"
|
| 216 |
|
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+" AND (permission='4' OR permission='7'))";
|
| 217 |
1301
|
tao
|
}//if
|
| 218 |
|
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}//for
|
| 219 |
|
|
}//if
|
| 220 |
|
|
MetaCatUtil.debugMessage("allow query is: "+ allowQuery, 30);
|
| 221 |
|
|
return allowQuery;
|
| 222 |
|
|
|
| 223 |
|
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}
|
| 224 |
155
|
jones
|
|
| 225 |
1301
|
tao
|
/*
|
| 226 |
|
|
* Method to create query for xml_access, this part is to get docid list which
|
| 227 |
|
|
* have a deny rule and perm_order is allowFirst for a given user. This means
|
| 228 |
|
|
* the user will be denied to read
|
| 229 |
|
|
*/
|
| 230 |
|
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private String createDenyRuleQuery()
|
| 231 |
|
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{
|
| 232 |
|
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String denyQuery = null;
|
| 233 |
|
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denyQuery ="SELECT docid from xml_access WHERE ";
|
| 234 |
|
|
// add deny rule for user name
|
| 235 |
|
|
if (userName != null && !userName.equals(""))
|
| 236 |
|
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{
|
| 237 |
|
|
denyQuery = denyQuery +"(principal_name = '" + userName
|
| 238 |
|
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+"' AND perm_type = 'deny' "
|
| 239 |
1304
|
tao
|
+"AND perm_order ='allowFirst'"
|
| 240 |
|
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+" AND (permission='4' OR permission='7'))";
|
| 241 |
1301
|
tao
|
}
|
| 242 |
|
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// add deny rule for public
|
| 243 |
|
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denyQuery = denyQuery +"OR (principal_name = '" + PUBLIC
|
| 244 |
|
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+"' AND perm_type = 'deny' "
|
| 245 |
1304
|
tao
|
+"AND perm_order ='allowFirst'"
|
| 246 |
|
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+" AND (permission='4' OR permission='7'))";
|
| 247 |
1301
|
tao
|
|
| 248 |
|
|
// add allow rule for group
|
| 249 |
|
|
if (group != null)
|
| 250 |
|
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{
|
| 251 |
|
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for (int i = 0; i< group.length; i++)
|
| 252 |
|
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{
|
| 253 |
|
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String groupUint = group[i];
|
| 254 |
|
|
if (groupUint != null && !groupUint.equals(""))
|
| 255 |
|
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{
|
| 256 |
|
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denyQuery = denyQuery +" OR (principal_name = '" + groupUint
|
| 257 |
|
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+"' AND perm_type = 'deny' "
|
| 258 |
1304
|
tao
|
+"AND perm_order ='allowFirst'"
|
| 259 |
|
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+" AND (permission='4' OR permission='7'))";
|
| 260 |
1301
|
tao
|
}//if
|
| 261 |
|
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}//for
|
| 262 |
|
|
}//if
|
| 263 |
|
|
MetaCatUtil.debugMessage("denyquery is: "+ denyQuery, 30);
|
| 264 |
|
|
return denyQuery;
|
| 265 |
|
|
|
| 266 |
|
|
}
|
| 267 |
|
|
|
| 268 |
|
|
/**
|
| 269 |
|
|
* Method to append a access control query to SQL. So in DBQuery class, we can
|
| 270 |
|
|
* get docid from both user specified query and access control query. We don't
|
| 271 |
|
|
* need to checking permission after we get the doclist. It will be good to
|
| 272 |
|
|
* performance
|
| 273 |
|
|
*
|
| 274 |
|
|
*/
|
| 275 |
|
|
public String getAccessQuery()
|
| 276 |
|
|
{
|
| 277 |
|
|
String accessQuery = null;
|
| 278 |
|
|
String onwer = createOwerQuery();
|
| 279 |
|
|
String allow = createAllowRuleQuery();
|
| 280 |
|
|
String deny = createDenyRuleQuery();
|
| 281 |
|
|
accessQuery = " AND (docid IN("+ onwer + ")";
|
| 282 |
|
|
accessQuery = accessQuery + " OR (docid IN (" + allow + ")"
|
| 283 |
|
|
+ " AND docid NOT IN ("+ deny + ")))";
|
| 284 |
|
|
MetaCatUtil.debugMessage("accessquery is: "+ accessQuery, 30);
|
| 285 |
|
|
return accessQuery;
|
| 286 |
|
|
}
|
| 287 |
|
|
|
| 288 |
155
|
jones
|
/** Main routine for testing */
|
| 289 |
|
|
static public void main(String[] args) {
|
| 290 |
|
|
|
| 291 |
|
|
if (args.length < 1) {
|
| 292 |
|
|
System.err.println("Wrong number of arguments!!!");
|
| 293 |
|
|
System.err.println("USAGE: java QuerySpecification <xmlfile>");
|
| 294 |
|
|
return;
|
| 295 |
|
|
} else {
|
| 296 |
711
|
jones
|
int i = 0;
|
| 297 |
|
|
boolean useXMLIndex = true;
|
| 298 |
|
|
if ( args[i].equals( "-noindex" ) ) {
|
| 299 |
|
|
useXMLIndex = false;
|
| 300 |
|
|
i++;
|
| 301 |
|
|
}
|
| 302 |
|
|
String xmlfile = args[i];
|
| 303 |
|
|
|
| 304 |
155
|
jones
|
try {
|
| 305 |
203
|
jones
|
MetaCatUtil util = new MetaCatUtil();
|
| 306 |
155
|
jones
|
FileReader xml = new FileReader(new File(xmlfile));
|
| 307 |
203
|
jones
|
QuerySpecification qspec =
|
| 308 |
535
|
jones
|
new QuerySpecification(xml, util.getOption("saxparser"),
|
| 309 |
|
|
util.getOption("accNumberSeparator"));
|
| 310 |
706
|
bojilova
|
System.out.println(qspec.printSQL(useXMLIndex));
|
| 311 |
181
|
jones
|
|
| 312 |
155
|
jones
|
} catch (IOException e) {
|
| 313 |
|
|
System.err.println(e.getMessage());
|
| 314 |
|
|
}
|
| 315 |
|
|
|
| 316 |
|
|
}
|
| 317 |
|
|
}
|
| 318 |
402
|
berkley
|
|
| 319 |
|
|
/**
|
| 320 |
|
|
* Returns true if the parsed query contains and extended xml query
|
| 321 |
|
|
* (i.e. there is at least one <returnfield> in the pathquery document)
|
| 322 |
|
|
*/
|
| 323 |
|
|
public boolean containsExtendedSQL()
|
| 324 |
|
|
{
|
| 325 |
|
|
if(containsExtendedSQL)
|
| 326 |
|
|
{
|
| 327 |
|
|
return true;
|
| 328 |
|
|
}
|
| 329 |
|
|
else
|
| 330 |
|
|
{
|
| 331 |
|
|
return false;
|
| 332 |
|
|
}
|
| 333 |
|
|
}
|
| 334 |
|
|
|
| 335 |
|
|
/**
|
| 336 |
745
|
jones
|
* Accessor method to return the identifier of this Query
|
| 337 |
|
|
*/
|
| 338 |
|
|
public String getIdentifier()
|
| 339 |
|
|
{
|
| 340 |
|
|
return meta_file_id;
|
| 341 |
|
|
}
|
| 342 |
|
|
|
| 343 |
|
|
/**
|
| 344 |
|
|
* method to set the identifier of this query
|
| 345 |
|
|
*/
|
| 346 |
|
|
public void setIdentifier(String id) {
|
| 347 |
|
|
this.meta_file_id = id;
|
| 348 |
|
|
}
|
| 349 |
|
|
|
| 350 |
|
|
/**
|
| 351 |
|
|
* Accessor method to return the title of this Query
|
| 352 |
|
|
*/
|
| 353 |
|
|
public String getQueryTitle()
|
| 354 |
|
|
{
|
| 355 |
|
|
return queryTitle;
|
| 356 |
|
|
}
|
| 357 |
|
|
|
| 358 |
|
|
/**
|
| 359 |
|
|
* method to set the title of this query
|
| 360 |
|
|
*/
|
| 361 |
|
|
public void setQueryTitle(String title)
|
| 362 |
|
|
{
|
| 363 |
|
|
this.queryTitle = title;
|
| 364 |
|
|
}
|
| 365 |
|
|
|
| 366 |
|
|
/**
|
| 367 |
|
|
* Accessor method to return a vector of the return document types as
|
| 368 |
|
|
* defined in the <returndoctype> tag in the pathquery dtd.
|
| 369 |
|
|
*/
|
| 370 |
|
|
public Vector getReturnDocList()
|
| 371 |
|
|
{
|
| 372 |
|
|
return this.returnDocList;
|
| 373 |
|
|
}
|
| 374 |
|
|
|
| 375 |
|
|
/**
|
| 376 |
|
|
* method to set the list of return docs of this query
|
| 377 |
|
|
*/
|
| 378 |
|
|
public void setReturnDocList(Vector returnDocList)
|
| 379 |
|
|
{
|
| 380 |
|
|
this.returnDocList = returnDocList;
|
| 381 |
|
|
}
|
| 382 |
|
|
|
| 383 |
|
|
/**
|
| 384 |
|
|
* Accessor method to return a vector of the filter doc types as
|
| 385 |
|
|
* defined in the <filterdoctype> tag in the pathquery dtd.
|
| 386 |
|
|
*/
|
| 387 |
|
|
public Vector getFilterDocList()
|
| 388 |
|
|
{
|
| 389 |
|
|
return this.filterDocList;
|
| 390 |
|
|
}
|
| 391 |
|
|
|
| 392 |
|
|
/**
|
| 393 |
|
|
* method to set the list of filter docs of this query
|
| 394 |
|
|
*/
|
| 395 |
|
|
public void setFilterDocList(Vector filterDocList)
|
| 396 |
|
|
{
|
| 397 |
|
|
this.filterDocList = filterDocList;
|
| 398 |
|
|
}
|
| 399 |
|
|
|
| 400 |
|
|
/**
|
| 401 |
402
|
berkley
|
* Accessor method to return a vector of the extended return fields as
|
| 402 |
|
|
* defined in the <returnfield> tag in the pathquery dtd.
|
| 403 |
|
|
*/
|
| 404 |
|
|
public Vector getReturnFieldList()
|
| 405 |
|
|
{
|
| 406 |
|
|
return this.returnFieldList;
|
| 407 |
|
|
}
|
| 408 |
155
|
jones
|
|
| 409 |
172
|
jones
|
/**
|
| 410 |
745
|
jones
|
* method to set the list of fields to be returned by this query
|
| 411 |
|
|
*/
|
| 412 |
|
|
public void setReturnFieldList(Vector returnFieldList)
|
| 413 |
|
|
{
|
| 414 |
|
|
this.returnFieldList = returnFieldList;
|
| 415 |
|
|
}
|
| 416 |
|
|
|
| 417 |
|
|
/**
|
| 418 |
|
|
* Accessor method to return a vector of the owner fields as
|
| 419 |
|
|
* defined in the <owner> tag in the pathquery dtd.
|
| 420 |
|
|
*/
|
| 421 |
|
|
public Vector getOwnerList()
|
| 422 |
|
|
{
|
| 423 |
|
|
return this.ownerList;
|
| 424 |
|
|
}
|
| 425 |
|
|
|
| 426 |
|
|
/**
|
| 427 |
|
|
* method to set the list of owners used to constrain this query
|
| 428 |
|
|
*/
|
| 429 |
|
|
public void setOwnerList(Vector ownerList)
|
| 430 |
|
|
{
|
| 431 |
|
|
this.ownerList = ownerList;
|
| 432 |
|
|
}
|
| 433 |
|
|
|
| 434 |
|
|
/**
|
| 435 |
|
|
* Accessor method to return a vector of the site fields as
|
| 436 |
|
|
* defined in the <site> tag in the pathquery dtd.
|
| 437 |
|
|
*/
|
| 438 |
|
|
public Vector getSiteList()
|
| 439 |
|
|
{
|
| 440 |
|
|
return this.siteList;
|
| 441 |
|
|
}
|
| 442 |
|
|
|
| 443 |
|
|
/**
|
| 444 |
|
|
* method to set the list of sites used to constrain this query
|
| 445 |
|
|
*/
|
| 446 |
|
|
public void setSiteList(Vector siteList)
|
| 447 |
|
|
{
|
| 448 |
|
|
this.siteList = siteList;
|
| 449 |
|
|
}
|
| 450 |
|
|
|
| 451 |
|
|
/**
|
| 452 |
|
|
* get the QueryGroup used to express query constraints
|
| 453 |
|
|
*/
|
| 454 |
|
|
public QueryGroup getQueryGroup()
|
| 455 |
|
|
{
|
| 456 |
|
|
return query;
|
| 457 |
|
|
}
|
| 458 |
|
|
|
| 459 |
|
|
/**
|
| 460 |
172
|
jones
|
* Set up the SAX parser for reading the XML serialized query
|
| 461 |
|
|
*/
|
| 462 |
185
|
jones
|
private XMLReader initializeParser() {
|
| 463 |
|
|
XMLReader parser = null;
|
| 464 |
172
|
jones
|
|
| 465 |
155
|
jones
|
// Set up the SAX document handlers for parsing
|
| 466 |
|
|
try {
|
| 467 |
|
|
|
| 468 |
|
|
// Get an instance of the parser
|
| 469 |
185
|
jones
|
parser = XMLReaderFactory.createXMLReader(parserName);
|
| 470 |
155
|
jones
|
|
| 471 |
185
|
jones
|
// Set the ContentHandler to this instance
|
| 472 |
|
|
parser.setContentHandler(this);
|
| 473 |
155
|
jones
|
|
| 474 |
185
|
jones
|
// Set the error Handler to this instance
|
| 475 |
158
|
jones
|
parser.setErrorHandler(this);
|
| 476 |
155
|
jones
|
|
| 477 |
|
|
} catch (Exception e) {
|
| 478 |
675
|
berkley
|
System.err.println("Error in QuerySpcecification.initializeParser " +
|
| 479 |
|
|
e.toString());
|
| 480 |
155
|
jones
|
}
|
| 481 |
|
|
|
| 482 |
|
|
return parser;
|
| 483 |
|
|
}
|
| 484 |
|
|
|
| 485 |
172
|
jones
|
/**
|
| 486 |
|
|
* callback method used by the SAX Parser when the start tag of an
|
| 487 |
|
|
* element is detected. Used in this context to parse and store
|
| 488 |
|
|
* the query information in class variables.
|
| 489 |
|
|
*/
|
| 490 |
185
|
jones
|
public void startElement (String uri, String localName,
|
| 491 |
|
|
String qName, Attributes atts)
|
| 492 |
155
|
jones
|
throws SAXException {
|
| 493 |
185
|
jones
|
BasicNode currentNode = new BasicNode(localName);
|
| 494 |
159
|
jones
|
// add attributes to BasicNode here
|
| 495 |
|
|
if (atts != null) {
|
| 496 |
|
|
int len = atts.getLength();
|
| 497 |
|
|
for (int i = 0; i < len; i++) {
|
| 498 |
185
|
jones
|
currentNode.setAttribute(atts.getLocalName(i), atts.getValue(i));
|
| 499 |
159
|
jones
|
}
|
| 500 |
|
|
}
|
| 501 |
|
|
|
| 502 |
158
|
jones
|
elementStack.push(currentNode);
|
| 503 |
159
|
jones
|
if (currentNode.getTagName().equals("querygroup")) {
|
| 504 |
158
|
jones
|
QueryGroup currentGroup = new QueryGroup(
|
| 505 |
178
|
jones
|
currentNode.getAttribute("operator"));
|
| 506 |
158
|
jones
|
if (query == null) {
|
| 507 |
|
|
query = currentGroup;
|
| 508 |
159
|
jones
|
} else {
|
| 509 |
|
|
QueryGroup parentGroup = (QueryGroup)queryStack.peek();
|
| 510 |
|
|
parentGroup.addChild(currentGroup);
|
| 511 |
158
|
jones
|
}
|
| 512 |
159
|
jones
|
queryStack.push(currentGroup);
|
| 513 |
158
|
jones
|
}
|
| 514 |
155
|
jones
|
}
|
| 515 |
|
|
|
| 516 |
172
|
jones
|
/**
|
| 517 |
|
|
* callback method used by the SAX Parser when the end tag of an
|
| 518 |
|
|
* element is detected. Used in this context to parse and store
|
| 519 |
|
|
* the query information in class variables.
|
| 520 |
|
|
*/
|
| 521 |
185
|
jones
|
public void endElement (String uri, String localName,
|
| 522 |
|
|
String qName) throws SAXException {
|
| 523 |
158
|
jones
|
BasicNode leaving = (BasicNode)elementStack.pop();
|
| 524 |
159
|
jones
|
if (leaving.getTagName().equals("queryterm")) {
|
| 525 |
|
|
boolean isCaseSensitive = (new Boolean(
|
| 526 |
|
|
leaving.getAttribute("casesensitive"))).booleanValue();
|
| 527 |
|
|
QueryTerm currentTerm = null;
|
| 528 |
|
|
if (currentPathexpr == null) {
|
| 529 |
|
|
currentTerm = new QueryTerm(isCaseSensitive,
|
| 530 |
|
|
leaving.getAttribute("searchmode"),currentValue);
|
| 531 |
|
|
} else {
|
| 532 |
|
|
currentTerm = new QueryTerm(isCaseSensitive,
|
| 533 |
|
|
leaving.getAttribute("searchmode"),currentValue,
|
| 534 |
|
|
currentPathexpr);
|
| 535 |
|
|
}
|
| 536 |
|
|
QueryGroup currentGroup = (QueryGroup)queryStack.peek();
|
| 537 |
|
|
currentGroup.addChild(currentTerm);
|
| 538 |
|
|
currentValue = null;
|
| 539 |
|
|
currentPathexpr = null;
|
| 540 |
|
|
} else if (leaving.getTagName().equals("querygroup")) {
|
| 541 |
|
|
QueryGroup leavingGroup = (QueryGroup)queryStack.pop();
|
| 542 |
158
|
jones
|
}
|
| 543 |
155
|
jones
|
}
|
| 544 |
158
|
jones
|
|
| 545 |
172
|
jones
|
/**
|
| 546 |
|
|
* callback method used by the SAX Parser when the text sequences of an
|
| 547 |
|
|
* xml stream are detected. Used in this context to parse and store
|
| 548 |
|
|
* the query information in class variables.
|
| 549 |
|
|
*/
|
| 550 |
158
|
jones
|
public void characters(char ch[], int start, int length) {
|
| 551 |
|
|
|
| 552 |
|
|
String inputString = new String(ch, start, length);
|
| 553 |
|
|
BasicNode currentNode = (BasicNode)elementStack.peek();
|
| 554 |
|
|
String currentTag = currentNode.getTagName();
|
| 555 |
|
|
if (currentTag.equals("meta_file_id")) {
|
| 556 |
|
|
meta_file_id = inputString;
|
| 557 |
745
|
jones
|
} else if (currentTag.equals("querytitle")) {
|
| 558 |
|
|
queryTitle = inputString;
|
| 559 |
159
|
jones
|
} else if (currentTag.equals("value")) {
|
| 560 |
|
|
currentValue = inputString;
|
| 561 |
|
|
} else if (currentTag.equals("pathexpr")) {
|
| 562 |
|
|
currentPathexpr = inputString;
|
| 563 |
172
|
jones
|
} else if (currentTag.equals("returndoctype")) {
|
| 564 |
743
|
jones
|
returnDocList.add(inputString);
|
| 565 |
745
|
jones
|
} else if (currentTag.equals("filterdoctype")) {
|
| 566 |
|
|
filterDocList.add(inputString);
|
| 567 |
402
|
berkley
|
} else if (currentTag.equals("returnfield")) {
|
| 568 |
|
|
returnFieldList.add(inputString);
|
| 569 |
|
|
containsExtendedSQL = true;
|
| 570 |
743
|
jones
|
} else if (currentTag.equals("filterdoctype")) {
|
| 571 |
|
|
filterDocList.add(inputString);
|
| 572 |
535
|
jones
|
} else if (currentTag.equals("owner")) {
|
| 573 |
|
|
ownerList.add(inputString);
|
| 574 |
|
|
} else if (currentTag.equals("site")) {
|
| 575 |
|
|
siteList.add(inputString);
|
| 576 |
158
|
jones
|
}
|
| 577 |
|
|
}
|
| 578 |
|
|
|
| 579 |
172
|
jones
|
/**
|
| 580 |
|
|
* create a SQL serialization of the query that this instance represents
|
| 581 |
|
|
*/
|
| 582 |
706
|
bojilova
|
public String printSQL(boolean useXMLIndex) {
|
| 583 |
170
|
jones
|
StringBuffer self = new StringBuffer();
|
| 584 |
|
|
|
| 585 |
692
|
bojilova
|
self.append("SELECT docid,docname,doctype,");
|
| 586 |
626
|
berkley
|
self.append("date_created, date_updated, rev ");
|
| 587 |
172
|
jones
|
self.append("FROM xml_documents WHERE docid IN (");
|
| 588 |
170
|
jones
|
|
| 589 |
178
|
jones
|
// This determines the documents that meet the query conditions
|
| 590 |
706
|
bojilova
|
self.append(query.printSQL(useXMLIndex));
|
| 591 |
172
|
jones
|
|
| 592 |
|
|
self.append(") ");
|
| 593 |
402
|
berkley
|
|
| 594 |
172
|
jones
|
// Add SQL to filter for doctypes requested in the query
|
| 595 |
743
|
jones
|
// This is an implicit OR for the list of doctypes. Only doctypes in this
|
| 596 |
|
|
// list will be searched if the tag is present
|
| 597 |
|
|
if (!filterDocList.isEmpty()) {
|
| 598 |
172
|
jones
|
boolean firstdoctype = true;
|
| 599 |
|
|
self.append(" AND (");
|
| 600 |
743
|
jones
|
Enumeration en = filterDocList.elements();
|
| 601 |
172
|
jones
|
while (en.hasMoreElements()) {
|
| 602 |
|
|
String currentDoctype = (String)en.nextElement();
|
| 603 |
|
|
if (firstdoctype) {
|
| 604 |
402
|
berkley
|
firstdoctype = false;
|
| 605 |
|
|
self.append(" doctype = '" + currentDoctype + "'");
|
| 606 |
172
|
jones
|
} else {
|
| 607 |
|
|
self.append(" OR doctype = '" + currentDoctype + "'");
|
| 608 |
|
|
}
|
| 609 |
|
|
}
|
| 610 |
|
|
self.append(") ");
|
| 611 |
|
|
}
|
| 612 |
743
|
jones
|
|
| 613 |
535
|
jones
|
// Add SQL to filter for owners requested in the query
|
| 614 |
|
|
// This is an implicit OR for the list of owners
|
| 615 |
|
|
if (!ownerList.isEmpty()) {
|
| 616 |
|
|
boolean first = true;
|
| 617 |
|
|
self.append(" AND (");
|
| 618 |
|
|
Enumeration en = ownerList.elements();
|
| 619 |
|
|
while (en.hasMoreElements()) {
|
| 620 |
|
|
String current = (String)en.nextElement();
|
| 621 |
|
|
if (first) {
|
| 622 |
|
|
first = false;
|
| 623 |
|
|
self.append(" user_owner = '" + current + "'");
|
| 624 |
|
|
} else {
|
| 625 |
|
|
self.append(" OR user_owner = '" + current + "'");
|
| 626 |
|
|
}
|
| 627 |
|
|
}
|
| 628 |
|
|
self.append(") ");
|
| 629 |
|
|
}
|
| 630 |
|
|
|
| 631 |
|
|
// Add SQL to filter for sites requested in the query
|
| 632 |
|
|
// This is an implicit OR for the list of sites
|
| 633 |
|
|
if (!siteList.isEmpty()) {
|
| 634 |
|
|
boolean first = true;
|
| 635 |
|
|
self.append(" AND (");
|
| 636 |
|
|
Enumeration en = siteList.elements();
|
| 637 |
|
|
while (en.hasMoreElements()) {
|
| 638 |
|
|
String current = (String)en.nextElement();
|
| 639 |
|
|
if (first) {
|
| 640 |
|
|
first = false;
|
| 641 |
|
|
self.append(" SUBSTR(docid, 1, INSTR(docid, '" +
|
| 642 |
|
|
accNumberSeparator + "')-1) = '" + current + "'");
|
| 643 |
|
|
} else {
|
| 644 |
|
|
self.append(" OR SUBSTR(docid, 1, INSTR(docid, '" +
|
| 645 |
|
|
accNumberSeparator + "')-1) = '" + current + "'");
|
| 646 |
|
|
}
|
| 647 |
|
|
}
|
| 648 |
|
|
self.append(") ");
|
| 649 |
|
|
}
|
| 650 |
710
|
berkley
|
//System.out.println(self.toString());
|
| 651 |
170
|
jones
|
return self.toString();
|
| 652 |
|
|
}
|
| 653 |
402
|
berkley
|
|
| 654 |
|
|
/**
|
| 655 |
|
|
* This method prints sql based upon the <returnfield> tag in the
|
| 656 |
|
|
* pathquery document. This allows for customization of the
|
| 657 |
|
|
* returned fields
|
| 658 |
465
|
berkley
|
* @param doclist the list of document ids to search by
|
| 659 |
402
|
berkley
|
*/
|
| 660 |
465
|
berkley
|
public String printExtendedSQL(String doclist)
|
| 661 |
402
|
berkley
|
{
|
| 662 |
|
|
StringBuffer self = new StringBuffer();
|
| 663 |
423
|
berkley
|
self.append("select xml_nodes.docid, xml_index.path, xml_nodes.nodedata ");
|
| 664 |
|
|
self.append("from xml_index, xml_nodes where xml_index.nodeid=");
|
| 665 |
|
|
self.append("xml_nodes.parentnodeid and (xml_index.path like '");
|
| 666 |
402
|
berkley
|
boolean firstfield = true;
|
| 667 |
|
|
//put the returnfields into the query
|
| 668 |
|
|
//the for loop allows for multiple fields
|
| 669 |
|
|
for(int i=0; i<returnFieldList.size(); i++)
|
| 670 |
|
|
{
|
| 671 |
|
|
if(firstfield)
|
| 672 |
|
|
{
|
| 673 |
|
|
firstfield = false;
|
| 674 |
405
|
berkley
|
self.append((String)returnFieldList.elementAt(i));
|
| 675 |
402
|
berkley
|
self.append("' ");
|
| 676 |
|
|
}
|
| 677 |
|
|
else
|
| 678 |
|
|
{
|
| 679 |
423
|
berkley
|
self.append("or xml_index.path like '");
|
| 680 |
405
|
berkley
|
self.append((String)returnFieldList.elementAt(i));
|
| 681 |
402
|
berkley
|
self.append("' ");
|
| 682 |
|
|
}
|
| 683 |
|
|
}
|
| 684 |
423
|
berkley
|
self.append(") AND xml_nodes.docid in (");
|
| 685 |
465
|
berkley
|
//self.append(query.printSQL());
|
| 686 |
|
|
self.append(doclist);
|
| 687 |
402
|
berkley
|
self.append(")");
|
| 688 |
423
|
berkley
|
self.append(" AND xml_nodes.nodetype = 'TEXT'");
|
| 689 |
405
|
berkley
|
|
| 690 |
423
|
berkley
|
//System.out.println(self.toString());
|
| 691 |
402
|
berkley
|
return self.toString();
|
| 692 |
|
|
}
|
| 693 |
465
|
berkley
|
|
| 694 |
|
|
public static String printRelationSQL(String docid)
|
| 695 |
|
|
{
|
| 696 |
|
|
StringBuffer self = new StringBuffer();
|
| 697 |
489
|
berkley
|
self.append("select subject, relationship, object, subdoctype, ");
|
| 698 |
|
|
self.append("objdoctype from xml_relation ");
|
| 699 |
743
|
jones
|
self.append("where docid like '").append(docid).append("'");
|
| 700 |
465
|
berkley
|
return self.toString();
|
| 701 |
|
|
}
|
| 702 |
453
|
berkley
|
|
| 703 |
172
|
jones
|
/**
|
| 704 |
465
|
berkley
|
* Prints sql that returns all relations in the database.
|
| 705 |
453
|
berkley
|
*/
|
| 706 |
|
|
public static String printPackageSQL()
|
| 707 |
|
|
{
|
| 708 |
|
|
StringBuffer self = new StringBuffer();
|
| 709 |
|
|
self.append("select z.nodedata, x.nodedata, y.nodedata from ");
|
| 710 |
|
|
self.append("(select nodeid, parentnodeid from xml_index where path like ");
|
| 711 |
743
|
jones
|
self.append("'triple/subject') s, (select nodeid, parentnodeid ");
|
| 712 |
453
|
berkley
|
self.append("from xml_index where path like ");
|
| 713 |
743
|
jones
|
self.append("'triple/relationship') rel, ");
|
| 714 |
453
|
berkley
|
self.append("(select nodeid, parentnodeid from xml_index where path like ");
|
| 715 |
743
|
jones
|
self.append("'triple/object') o, ");
|
| 716 |
453
|
berkley
|
self.append("xml_nodes x, xml_nodes y, xml_nodes z ");
|
| 717 |
|
|
self.append("where s.parentnodeid = rel.parentnodeid ");
|
| 718 |
|
|
self.append("and rel.parentnodeid = o.parentnodeid ");
|
| 719 |
899
|
berkley
|
self.append("and x.parentnodeid in (rel.nodeid) ");
|
| 720 |
|
|
self.append("and y.parentnodeid in (o.nodeid) ");
|
| 721 |
|
|
self.append("and z.parentnodeid in (s.nodeid) ");
|
| 722 |
453
|
berkley
|
//self.append("and z.nodedata like '%");
|
| 723 |
|
|
//self.append(docid);
|
| 724 |
|
|
//self.append("%'");
|
| 725 |
|
|
return self.toString();
|
| 726 |
|
|
}
|
| 727 |
|
|
|
| 728 |
|
|
/**
|
| 729 |
465
|
berkley
|
* Prints sql that returns all relations in the database that were input
|
| 730 |
|
|
* under a specific docid
|
| 731 |
|
|
* @param docid the docid to search for.
|
| 732 |
|
|
*/
|
| 733 |
|
|
public static String printPackageSQL(String docid)
|
| 734 |
|
|
{
|
| 735 |
|
|
StringBuffer self = new StringBuffer();
|
| 736 |
|
|
self.append("select z.nodedata, x.nodedata, y.nodedata from ");
|
| 737 |
|
|
self.append("(select nodeid, parentnodeid from xml_index where path like ");
|
| 738 |
743
|
jones
|
self.append("'triple/subject') s, (select nodeid, parentnodeid ");
|
| 739 |
465
|
berkley
|
self.append("from xml_index where path like ");
|
| 740 |
743
|
jones
|
self.append("'triple/relationship') rel, ");
|
| 741 |
465
|
berkley
|
self.append("(select nodeid, parentnodeid from xml_index where path like ");
|
| 742 |
743
|
jones
|
self.append("'triple/object') o, ");
|
| 743 |
465
|
berkley
|
self.append("xml_nodes x, xml_nodes y, xml_nodes z ");
|
| 744 |
|
|
self.append("where s.parentnodeid = rel.parentnodeid ");
|
| 745 |
|
|
self.append("and rel.parentnodeid = o.parentnodeid ");
|
| 746 |
899
|
berkley
|
self.append("and x.parentnodeid in (rel.nodeid) ");
|
| 747 |
|
|
self.append("and y.parentnodeid in (o.nodeid) ");
|
| 748 |
|
|
self.append("and z.parentnodeid in (s.nodeid) ");
|
| 749 |
465
|
berkley
|
self.append("and z.docid like '").append(docid).append("'");
|
| 750 |
|
|
|
| 751 |
|
|
return self.toString();
|
| 752 |
|
|
}
|
| 753 |
|
|
|
| 754 |
|
|
/**
|
| 755 |
|
|
* Returns all of the relations that has a certain docid in the subject
|
| 756 |
|
|
* or the object.
|
| 757 |
|
|
*
|
| 758 |
|
|
* @param docid the docid to search for
|
| 759 |
|
|
*/
|
| 760 |
|
|
public static String printPackageSQL(String subDocidURL, String objDocidURL)
|
| 761 |
|
|
{
|
| 762 |
|
|
StringBuffer self = new StringBuffer();
|
| 763 |
|
|
self.append("select z.nodedata, x.nodedata, y.nodedata from ");
|
| 764 |
|
|
self.append("(select nodeid, parentnodeid from xml_index where path like ");
|
| 765 |
743
|
jones
|
self.append("'triple/subject') s, (select nodeid, parentnodeid ");
|
| 766 |
465
|
berkley
|
self.append("from xml_index where path like ");
|
| 767 |
743
|
jones
|
self.append("'triple/relationship') rel, ");
|
| 768 |
465
|
berkley
|
self.append("(select nodeid, parentnodeid from xml_index where path like ");
|
| 769 |
743
|
jones
|
self.append("'triple/object') o, ");
|
| 770 |
465
|
berkley
|
self.append("xml_nodes x, xml_nodes y, xml_nodes z ");
|
| 771 |
|
|
self.append("where s.parentnodeid = rel.parentnodeid ");
|
| 772 |
|
|
self.append("and rel.parentnodeid = o.parentnodeid ");
|
| 773 |
899
|
berkley
|
self.append("and x.parentnodeid in (rel.nodeid) ");
|
| 774 |
|
|
self.append("and y.parentnodeid in (o.nodeid) ");
|
| 775 |
|
|
self.append("and z.parentnodeid in (s.nodeid) ");
|
| 776 |
465
|
berkley
|
self.append("and (z.nodedata like '");
|
| 777 |
|
|
self.append(subDocidURL);
|
| 778 |
|
|
self.append("' or y.nodedata like '");
|
| 779 |
|
|
self.append(objDocidURL);
|
| 780 |
|
|
self.append("')");
|
| 781 |
|
|
return self.toString();
|
| 782 |
|
|
}
|
| 783 |
|
|
|
| 784 |
|
|
public static String printGetDocByDoctypeSQL(String docid)
|
| 785 |
|
|
{
|
| 786 |
|
|
StringBuffer self = new StringBuffer();
|
| 787 |
|
|
|
| 788 |
692
|
bojilova
|
self.append("SELECT docid,docname,doctype,");
|
| 789 |
465
|
berkley
|
self.append("date_created, date_updated ");
|
| 790 |
|
|
self.append("FROM xml_documents WHERE docid IN (");
|
| 791 |
|
|
self.append(docid).append(")");
|
| 792 |
|
|
return self.toString();
|
| 793 |
|
|
}
|
| 794 |
|
|
|
| 795 |
|
|
/**
|
| 796 |
172
|
jones
|
* create a String description of the query that this instance represents.
|
| 797 |
|
|
* This should become a way to get the XML serialization of the query.
|
| 798 |
|
|
*/
|
| 799 |
159
|
jones
|
public String toString() {
|
| 800 |
692
|
bojilova
|
return "meta_file_id=" + meta_file_id + "\n" + query;
|
| 801 |
|
|
//DOCTITLE attr cleared from the db
|
| 802 |
|
|
// return "meta_file_id=" + meta_file_id + "\n" +
|
| 803 |
|
|
// "querytitle=" + querytitle + "\n" + query;
|
| 804 |
159
|
jones
|
}
|
| 805 |
|
|
|
| 806 |
158
|
jones
|
/** a utility class that represents a group of terms in a query */
|
| 807 |
|
|
private class QueryGroup {
|
| 808 |
178
|
jones
|
private String operator = null; // indicates how query terms are combined
|
| 809 |
|
|
private Vector children = null; // the list of query terms and groups
|
| 810 |
158
|
jones
|
|
| 811 |
172
|
jones
|
/**
|
| 812 |
|
|
* construct a new QueryGroup
|
| 813 |
|
|
*
|
| 814 |
178
|
jones
|
* @param operator the boolean conector used to connect query terms
|
| 815 |
172
|
jones
|
* in this query group
|
| 816 |
|
|
*/
|
| 817 |
178
|
jones
|
public QueryGroup(String operator) {
|
| 818 |
|
|
this.operator = operator;
|
| 819 |
158
|
jones
|
children = new Vector();
|
| 820 |
|
|
}
|
| 821 |
|
|
|
| 822 |
172
|
jones
|
/**
|
| 823 |
|
|
* Add a child QueryGroup to this QueryGroup
|
| 824 |
|
|
*
|
| 825 |
|
|
* @param qgroup the query group to be added to the list of terms
|
| 826 |
|
|
*/
|
| 827 |
158
|
jones
|
public void addChild(QueryGroup qgroup) {
|
| 828 |
|
|
children.add((Object)qgroup);
|
| 829 |
|
|
}
|
| 830 |
|
|
|
| 831 |
172
|
jones
|
/**
|
| 832 |
|
|
* Add a child QueryTerm to this QueryGroup
|
| 833 |
|
|
*
|
| 834 |
|
|
* @param qterm the query term to be added to the list of terms
|
| 835 |
|
|
*/
|
| 836 |
158
|
jones
|
public void addChild(QueryTerm qterm) {
|
| 837 |
|
|
children.add((Object)qterm);
|
| 838 |
|
|
}
|
| 839 |
|
|
|
| 840 |
172
|
jones
|
/**
|
| 841 |
|
|
* Retrieve an Enumeration of query terms for this QueryGroup
|
| 842 |
|
|
*/
|
| 843 |
158
|
jones
|
public Enumeration getChildren() {
|
| 844 |
|
|
return children.elements();
|
| 845 |
|
|
}
|
| 846 |
159
|
jones
|
|
| 847 |
172
|
jones
|
/**
|
| 848 |
|
|
* create a SQL serialization of the query that this instance represents
|
| 849 |
|
|
*/
|
| 850 |
706
|
bojilova
|
public String printSQL(boolean useXMLIndex) {
|
| 851 |
170
|
jones
|
StringBuffer self = new StringBuffer();
|
| 852 |
|
|
boolean first = true;
|
| 853 |
|
|
|
| 854 |
|
|
self.append("(");
|
| 855 |
|
|
|
| 856 |
|
|
Enumeration en= getChildren();
|
| 857 |
|
|
while (en.hasMoreElements()) {
|
| 858 |
|
|
Object qobject = en.nextElement();
|
| 859 |
|
|
if (first) {
|
| 860 |
|
|
first = false;
|
| 861 |
|
|
} else {
|
| 862 |
178
|
jones
|
self.append(" " + operator + " ");
|
| 863 |
170
|
jones
|
}
|
| 864 |
|
|
if (qobject instanceof QueryGroup) {
|
| 865 |
|
|
QueryGroup qg = (QueryGroup)qobject;
|
| 866 |
706
|
bojilova
|
self.append(qg.printSQL(useXMLIndex));
|
| 867 |
170
|
jones
|
} else if (qobject instanceof QueryTerm) {
|
| 868 |
|
|
QueryTerm qt = (QueryTerm)qobject;
|
| 869 |
706
|
bojilova
|
self.append(qt.printSQL(useXMLIndex));
|
| 870 |
170
|
jones
|
} else {
|
| 871 |
|
|
System.err.println("qobject wrong type: fatal error");
|
| 872 |
|
|
}
|
| 873 |
|
|
}
|
| 874 |
|
|
self.append(") \n");
|
| 875 |
|
|
return self.toString();
|
| 876 |
|
|
}
|
| 877 |
|
|
|
| 878 |
172
|
jones
|
/**
|
| 879 |
|
|
* create a String description of the query that this instance represents.
|
| 880 |
|
|
* This should become a way to get the XML serialization of the query.
|
| 881 |
|
|
*/
|
| 882 |
159
|
jones
|
public String toString() {
|
| 883 |
|
|
StringBuffer self = new StringBuffer();
|
| 884 |
|
|
|
| 885 |
178
|
jones
|
self.append(" (Query group operator=" + operator + "\n");
|
| 886 |
159
|
jones
|
Enumeration en= getChildren();
|
| 887 |
|
|
while (en.hasMoreElements()) {
|
| 888 |
|
|
Object qobject = en.nextElement();
|
| 889 |
|
|
self.append(qobject);
|
| 890 |
|
|
}
|
| 891 |
|
|
self.append(" )\n");
|
| 892 |
|
|
return self.toString();
|
| 893 |
|
|
}
|
| 894 |
158
|
jones
|
}
|
| 895 |
|
|
|
| 896 |
|
|
/** a utility class that represents a single term in a query */
|
| 897 |
|
|
private class QueryTerm {
|
| 898 |
|
|
private boolean casesensitive = false;
|
| 899 |
|
|
private String searchmode = null;
|
| 900 |
|
|
private String value = null;
|
| 901 |
|
|
private String pathexpr = null;
|
| 902 |
|
|
|
| 903 |
172
|
jones
|
/**
|
| 904 |
|
|
* Construct a new instance of a query term for a free text search
|
| 905 |
|
|
* (using the value only)
|
| 906 |
|
|
*
|
| 907 |
|
|
* @param casesensitive flag indicating whether case is used to match
|
| 908 |
|
|
* @param searchmode determines what kind of substring match is performed
|
| 909 |
|
|
* (one of starts-with|ends-with|contains|matches-exactly)
|
| 910 |
|
|
* @param value the text value to match
|
| 911 |
|
|
*/
|
| 912 |
158
|
jones
|
public QueryTerm(boolean casesensitive, String searchmode,
|
| 913 |
|
|
String value) {
|
| 914 |
|
|
this.casesensitive = casesensitive;
|
| 915 |
|
|
this.searchmode = searchmode;
|
| 916 |
|
|
this.value = value;
|
| 917 |
|
|
}
|
| 918 |
|
|
|
| 919 |
172
|
jones
|
/**
|
| 920 |
|
|
* Construct a new instance of a query term for a structured search
|
| 921 |
|
|
* (matching the value only for those nodes in the pathexpr)
|
| 922 |
|
|
*
|
| 923 |
|
|
* @param casesensitive flag indicating whether case is used to match
|
| 924 |
|
|
* @param searchmode determines what kind of substring match is performed
|
| 925 |
|
|
* (one of starts-with|ends-with|contains|matches-exactly)
|
| 926 |
|
|
* @param value the text value to match
|
| 927 |
|
|
* @param pathexpr the hierarchical path to the nodes to be searched
|
| 928 |
|
|
*/
|
| 929 |
158
|
jones
|
public QueryTerm(boolean casesensitive, String searchmode,
|
| 930 |
|
|
String value, String pathexpr) {
|
| 931 |
|
|
this(casesensitive, searchmode, value);
|
| 932 |
|
|
this.pathexpr = pathexpr;
|
| 933 |
|
|
}
|
| 934 |
|
|
|
| 935 |
172
|
jones
|
/** determine if the QueryTerm is case sensitive */
|
| 936 |
158
|
jones
|
public boolean isCaseSensitive() {
|
| 937 |
|
|
return casesensitive;
|
| 938 |
|
|
}
|
| 939 |
|
|
|
| 940 |
172
|
jones
|
/** get the searchmode parameter */
|
| 941 |
158
|
jones
|
public String getSearchMode() {
|
| 942 |
|
|
return searchmode;
|
| 943 |
|
|
}
|
| 944 |
|
|
|
| 945 |
172
|
jones
|
/** get the Value parameter */
|
| 946 |
158
|
jones
|
public String getValue() {
|
| 947 |
|
|
return value;
|
| 948 |
|
|
}
|
| 949 |
|
|
|
| 950 |
172
|
jones
|
/** get the path expression parameter */
|
| 951 |
158
|
jones
|
public String getPathExpression() {
|
| 952 |
|
|
return pathexpr;
|
| 953 |
|
|
}
|
| 954 |
159
|
jones
|
|
| 955 |
172
|
jones
|
/**
|
| 956 |
|
|
* create a SQL serialization of the query that this instance represents
|
| 957 |
|
|
*/
|
| 958 |
706
|
bojilova
|
public String printSQL(boolean useXMLIndex) {
|
| 959 |
170
|
jones
|
StringBuffer self = new StringBuffer();
|
| 960 |
|
|
|
| 961 |
|
|
// Uppercase the search string if case match is not important
|
| 962 |
|
|
String casevalue = null;
|
| 963 |
|
|
String nodedataterm = null;
|
| 964 |
|
|
|
| 965 |
|
|
if (casesensitive) {
|
| 966 |
|
|
nodedataterm = "nodedata";
|
| 967 |
|
|
casevalue = value;
|
| 968 |
|
|
} else {
|
| 969 |
|
|
nodedataterm = "UPPER(nodedata)";
|
| 970 |
|
|
casevalue = value.toUpperCase();
|
| 971 |
|
|
}
|
| 972 |
|
|
|
| 973 |
|
|
// Add appropriate wildcards to search string
|
| 974 |
795
|
bojilova
|
//String searchvalue = null;
|
| 975 |
|
|
String searchexpr = null;
|
| 976 |
170
|
jones
|
if (searchmode.equals("starts-with")) {
|
| 977 |
795
|
bojilova
|
//searchvalue = casevalue + "%";
|
| 978 |
|
|
searchexpr = nodedataterm + " LIKE '" + casevalue + "%' ";
|
| 979 |
170
|
jones
|
} else if (searchmode.equals("ends-with")) {
|
| 980 |
795
|
bojilova
|
//searchvalue = "%" + casevalue;
|
| 981 |
|
|
searchexpr = nodedataterm + " LIKE '%" + casevalue + "' ";
|
| 982 |
170
|
jones
|
} else if (searchmode.equals("contains")) {
|
| 983 |
795
|
bojilova
|
//searchvalue = "%" + casevalue + "%";
|
| 984 |
1305
|
tao
|
if (!casevalue.equals("%"))
|
| 985 |
|
|
{
|
| 986 |
|
|
searchexpr = nodedataterm + " LIKE '%" + casevalue + "%' ";
|
| 987 |
|
|
}
|
| 988 |
|
|
else
|
| 989 |
|
|
{
|
| 990 |
|
|
searchexpr = nodedataterm + " LIKE '" + casevalue + "' ";
|
| 991 |
|
|
}
|
| 992 |
795
|
bojilova
|
} else if (searchmode.equals("equals")) {
|
| 993 |
|
|
//searchvalue = casevalue;
|
| 994 |
|
|
searchexpr = nodedataterm + " = '" + casevalue + "' ";
|
| 995 |
|
|
} else if (searchmode.equals("isnot-equal")) {
|
| 996 |
|
|
//searchvalue = casevalue;
|
| 997 |
|
|
searchexpr = nodedataterm + " != '" + casevalue + "' ";
|
| 998 |
|
|
} else {
|
| 999 |
|
|
//searchvalue = casevalue;
|
| 1000 |
|
|
String oper = null;
|
| 1001 |
|
|
if (searchmode.equals("greater-than")) {
|
| 1002 |
|
|
oper = ">";
|
| 1003 |
|
|
} else if (searchmode.equals("greater-than-equals")) {
|
| 1004 |
|
|
oper = ">=";
|
| 1005 |
|
|
} else if (searchmode.equals("less-than")) {
|
| 1006 |
|
|
oper = "<";
|
| 1007 |
|
|
} else if (searchmode.equals("less-than-equals")) {
|
| 1008 |
|
|
oper = "<=";
|
| 1009 |
|
|
} else {
|
| 1010 |
|
|
System.out.println("NOT expected case. NOT recognized operator: " +
|
| 1011 |
|
|
searchmode);
|
| 1012 |
|
|
return null;
|
| 1013 |
|
|
}
|
| 1014 |
|
|
try {
|
| 1015 |
|
|
// it is number; numeric comparison
|
| 1016 |
|
|
searchexpr = nodedataterm + " " + oper + " " +
|
| 1017 |
|
|
new Double(casevalue) + " ";
|
| 1018 |
|
|
} catch (NumberFormatException nfe) {
|
| 1019 |
|
|
// these are characters; character comparison
|
| 1020 |
|
|
searchexpr = nodedataterm + " " + oper + " '" + casevalue + "' ";
|
| 1021 |
|
|
}
|
| 1022 |
170
|
jones
|
}
|
| 1023 |
|
|
|
| 1024 |
178
|
jones
|
self.append("SELECT DISTINCT docid FROM xml_nodes WHERE \n");
|
| 1025 |
795
|
bojilova
|
//self.append(nodedataterm + " LIKE " + "'" + searchvalue + "' ");
|
| 1026 |
|
|
self.append(searchexpr);
|
| 1027 |
170
|
jones
|
|
| 1028 |
|
|
if (pathexpr != null) {
|
| 1029 |
|
|
self.append("AND parentnodeid IN ");
|
| 1030 |
706
|
bojilova
|
// use XML Index
|
| 1031 |
|
|
if ( useXMLIndex ) {
|
| 1032 |
|
|
self.append("(SELECT nodeid FROM xml_index WHERE path LIKE " +
|
| 1033 |
|
|
"'" + pathexpr + "') " );
|
| 1034 |
|
|
// without using XML Index; using nested statements instead
|
| 1035 |
|
|
} else {
|
| 1036 |
|
|
self.append(useNestedStatements(pathexpr));
|
| 1037 |
|
|
}
|
| 1038 |
170
|
jones
|
}
|
| 1039 |
|
|
|
| 1040 |
|
|
return self.toString();
|
| 1041 |
|
|
}
|
| 1042 |
|
|
|
| 1043 |
706
|
bojilova
|
/*
|
| 1044 |
|
|
* Constraint the query with @pathexp without using the XML Index,
|
| 1045 |
|
|
* but nested SQL statements instead. The query migth be slower.
|
| 1046 |
|
|
*/
|
| 1047 |
|
|
private String useNestedStatements(String pathexpr)
|
| 1048 |
|
|
{
|
| 1049 |
|
|
StringBuffer nestedStmts = new StringBuffer();
|
| 1050 |
|
|
Vector nodes = new Vector();
|
| 1051 |
|
|
String path = pathexpr;
|
| 1052 |
|
|
int inx = 0;
|
| 1053 |
|
|
|
| 1054 |
|
|
do {
|
| 1055 |
|
|
inx = path.lastIndexOf("/");
|
| 1056 |
|
|
//System.out.println(path.substring(inx+1));
|
| 1057 |
|
|
nodes.addElement(path.substring(inx+1));
|
| 1058 |
|
|
path = path.substring(0, Math.abs(inx));
|
| 1059 |
|
|
} while ( inx > 0 );
|
| 1060 |
|
|
|
| 1061 |
|
|
// nested statements
|
| 1062 |
|
|
int i = 0;
|
| 1063 |
|
|
for (i = 0; i < nodes.size()-1; i++) {
|
| 1064 |
|
|
nestedStmts.append("(SELECT nodeid FROM xml_nodes" +
|
| 1065 |
|
|
" WHERE nodename LIKE '" +
|
| 1066 |
|
|
(String)nodes.elementAt(i) + "'" +
|
| 1067 |
|
|
" AND parentnodeid IN ");
|
| 1068 |
|
|
}
|
| 1069 |
|
|
// for the last statement: it is without " AND parentnodeid IN "
|
| 1070 |
|
|
nestedStmts.append("(SELECT nodeid FROM xml_nodes" +
|
| 1071 |
|
|
" WHERE nodename LIKE '" +
|
| 1072 |
|
|
(String)nodes.elementAt(i) + "'" );
|
| 1073 |
|
|
// node.size() number of closing brackets
|
| 1074 |
|
|
for (i = 0; i < nodes.size(); i++) {
|
| 1075 |
|
|
nestedStmts.append(")");
|
| 1076 |
|
|
}
|
| 1077 |
|
|
|
| 1078 |
|
|
|
| 1079 |
710
|
berkley
|
//System.out.println(nestedStmts.toString());
|
| 1080 |
706
|
bojilova
|
return nestedStmts.toString();
|
| 1081 |
|
|
}
|
| 1082 |
|
|
|
| 1083 |
172
|
jones
|
/**
|
| 1084 |
|
|
* create a String description of the query that this instance represents.
|
| 1085 |
|
|
* This should become a way to get the XML serialization of the query.
|
| 1086 |
|
|
*/
|
| 1087 |
709
|
bojilova
|
public String toString() {
|
| 1088 |
159
|
jones
|
|
| 1089 |
709
|
bojilova
|
return this.printSQL(true);
|
| 1090 |
159
|
jones
|
}
|
| 1091 |
158
|
jones
|
}
|
| 1092 |
155
|
jones
|
}
|