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Removing unused class VitroQueryParser.

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bdc34 2010-06-25 20:11:46 +00:00
parent b6d0c61e86
commit ab3acde2c4
1 changed files with 0 additions and 100 deletions
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100
webapp/src/edu/cornell/mannlib/vitro/webapp/search/lucene/VitroQueryParser.java
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@ -1,100 +0,0 @@
/* $This file is distributed under the terms of the license in /doc/license.txt$ */
package edu.cornell.mannlib.vitro.webapp.search.lucene;
import java.util.HashMap;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.index.Term;
import org.apache.lucene.queryParser.*;
import org.apache.lucene.search.MatchAllDocsQuery;
import org.apache.lucene.search.PrefixQuery;
import org.apache.lucene.search.WildcardQuery;
/**
* This is a QueryParser that will fall back to unstemmed
* field for WildcardQueries and PrefixQueries.
*
* @author bdc34 a cornell dot edu
*/
public class VitroQueryParser extends QueryParser {
/**
* Map from stemmed field names to the names of fields with the
* same terms but unstemmed.
*/
HashMap <String,String> stemmedToUnstemmed;
public VitroQueryParser(String f, Analyzer a) {super(f, a); }
public VitroQueryParser(CharStream stream) {super(stream); }
public VitroQueryParser(QueryParserTokenManager tm) {super(tm); }
/**
* Sets the map of field name to field name where
* the key maps to the name of the field with the unstemmed
* version of the same terms.
* @param stemmedToUnstemmed
*/
public void setStemmedToUnstemmed(HashMap<String, String> stemmedToUnstemmed) {
this.stemmedToUnstemmed = stemmedToUnstemmed;
}
/**
* attempts to get a field name for the unstemmed data of
* the given stemmedField data. Returns stemmedField
* if there is not mapping in stemmedToUnstemmed.
* @param stemmedField
* @return
*/
public String getUnstemmed(String stemmedField){
if( stemmedField == null ||
stemmedToUnstemmed == null ||
!stemmedToUnstemmed.containsKey(stemmedField))
return stemmedField;
else
return stemmedToUnstemmed.get(stemmedField);
}
@Override
protected org.apache.lucene.search.Query getPrefixQuery(String field, String termStr)
throws ParseException {
if ( termStr.startsWith("*") )
throw new ParseException("'*' not allowed as first character in PrefixQuery");
//down case the terms that would have been down cased by the analyzer on index.
if ( Entity2LuceneDoc.term.ALLTEXT.equals(field) ||
Entity2LuceneDoc.term.ALLTEXTUNSTEMMED.equals(field) ||
Entity2LuceneDoc.term.KEYWORDS.equals(field) ) {
termStr = termStr.toLowerCase();
}
Term t = new Term(field, termStr);
return new PrefixQuery(t);
}
@Override
protected org.apache.lucene.search.Query getWildcardQuery(String field, String termStr)
throws ParseException {
if ( (termStr.startsWith("*") || termStr.startsWith("?")) )
throw new ParseException("'*' or '?' not allowed as first character in WildcardQuery");
//down case the terms that would have been down cased by the analyzer on index.
if ( Entity2LuceneDoc.term.ALLTEXT.equals(field) ||
Entity2LuceneDoc.term.ALLTEXTUNSTEMMED.equals(field) ||
Entity2LuceneDoc.term.KEYWORDS.equals(field) ) {
termStr = termStr.toLowerCase();
}
Term t = new Term(field, termStr);
return new WildcardQuery(t);
}
@Override
protected org.apache.lucene.search.Query getFieldQuery(String arg0,
String arg1) throws ParseException {
// TODO Auto-generated method stub
return super.getFieldQuery(arg0, arg1);
}
}