pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / contrib / xml-query-parser / src / java / org / apache / lucene / xmlparser / builders / LikeThisQueryBuilder.java

diff --git a/lucene-java-3.4.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/LikeThisQueryBuilder.java b/lucene-java-3.4.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/LikeThisQueryBuilder.java
deleted file mode 100644 (file)
index 9b3da2e..0000000
--- a/lucene-java-3.4.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/LikeThisQueryBuilder.java
+++ /dev/null
@@ -1,117 +0,0 @@
-/*
- * Created on 25-Jan-2006
- */
-package org.apache.lucene.xmlparser.builders;
-
-import java.io.IOException;
-import java.io.StringReader;
-import java.util.HashSet;
-import java.util.Set;
-
-import org.apache.lucene.analysis.Analyzer;
-import org.apache.lucene.analysis.TokenStream;
-import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
-import org.apache.lucene.search.similar.MoreLikeThisQuery;
-import org.apache.lucene.search.Query;
-import org.apache.lucene.xmlparser.DOMUtils;
-import org.apache.lucene.xmlparser.ParserException;
-import org.apache.lucene.xmlparser.QueryBuilder;
-import org.w3c.dom.Element;
-/**
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * 
- */
-public class LikeThisQueryBuilder implements QueryBuilder {
-
-       private Analyzer analyzer;
-       String defaultFieldNames [];
-       int defaultMaxQueryTerms=20;
-       int defaultMinTermFrequency=1;
-       float defaultPercentTermsToMatch=30; //default is a 3rd of selected terms must match
-
-       public LikeThisQueryBuilder(Analyzer analyzer,String [] defaultFieldNames)
-       {
-               this.analyzer=analyzer;
-               this.defaultFieldNames=defaultFieldNames;
-       }
-       
-       /* (non-Javadoc)
-        * @see org.apache.lucene.xmlparser.QueryObjectBuilder#process(org.w3c.dom.Element)
-        */
-       public Query getQuery(Element e) throws ParserException {
-               String fieldsList=e.getAttribute("fieldNames"); //a comma-delimited list of fields
-               String fields[]=defaultFieldNames;
-               if((fieldsList!=null)&&(fieldsList.trim().length()>0))
-               {
-                       fields=fieldsList.trim().split(",");
-                       //trim the fieldnames
-                       for (int i = 0; i < fields.length; i++) {
-                               fields[i]=fields[i].trim();
-                       }
-               }
-               
-               //Parse any "stopWords" attribute
-               //TODO MoreLikeThis needs to ideally have per-field stopWords lists - until then 
-               //I use all analyzers/fields to generate multi-field compatible stop list
-               String stopWords=e.getAttribute("stopWords");
-               Set<String> stopWordsSet=null;
-               if((stopWords!=null)&&(fields!=null))
-               {
-                   stopWordsSet=new HashSet<String>();
-                   for (int i = 0; i < fields.length; i++)
-            {
-                try
-                {
-                  TokenStream ts = analyzer.reusableTokenStream(fields[i],new StringReader(stopWords));
-                  CharTermAttribute termAtt = ts.addAttribute(CharTermAttribute.class);
-                  ts.reset();
-                       while(ts.incrementToken()) {
-                           stopWordsSet.add(termAtt.toString());
-                       }
-                       ts.end();
-                       ts.close();
-                }
-                catch(IOException ioe)
-                {
-                    throw new ParserException("IoException parsing stop words list in "
-                            +getClass().getName()+":"+ioe.getLocalizedMessage());
-                }
-            }
-               }
-               
-               
-               MoreLikeThisQuery mlt=new MoreLikeThisQuery(DOMUtils.getText(e),fields,analyzer, fields[0]);
-               mlt.setMaxQueryTerms(DOMUtils.getAttribute(e,"maxQueryTerms",defaultMaxQueryTerms));
-               mlt.setMinTermFrequency(DOMUtils.getAttribute(e,"minTermFrequency",defaultMinTermFrequency));
-               mlt.setPercentTermsToMatch(DOMUtils.getAttribute(e,"percentTermsToMatch",defaultPercentTermsToMatch)/100);
-               mlt.setStopWords(stopWordsSet);
-               int minDocFreq=DOMUtils.getAttribute(e,"minDocFreq",-1);
-               if(minDocFreq>=0)
-               {
-                       mlt.setMinDocFreq(minDocFreq);
-               }
-
-               mlt.setBoost(DOMUtils.getAttribute(e,"boost",1.0f));
-
-               return mlt;
-       }
-
-
-
-}