pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.5.0 / lucene / contrib / xml-query-parser / src / java / org / apache / lucene / xmlparser / builders / FuzzyLikeThisQueryBuilder.java

diff --git a/lucene-java-3.5.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/FuzzyLikeThisQueryBuilder.java b/lucene-java-3.5.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/FuzzyLikeThisQueryBuilder.java
new file mode 100644 (file)
index 0000000..3df1513
--- /dev/null
+++ b/lucene-java-3.5.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/FuzzyLikeThisQueryBuilder.java
@@ -0,0 +1,66 @@
+package org.apache.lucene.xmlparser.builders;
+
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.search.FuzzyLikeThisQuery;
+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;
+import org.w3c.dom.NodeList;
+
+/**
+ * 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 FuzzyLikeThisQueryBuilder implements QueryBuilder
+{
+       int defaultMaxNumTerms=50;
+       float defaultMinSimilarity=0.5f;
+       int defaultPrefixLength=1;
+       boolean defaultIgnoreTF=false;
+       private Analyzer analyzer;
+       
+       public FuzzyLikeThisQueryBuilder(Analyzer analyzer)
+       {
+               this.analyzer=analyzer;
+       }
+
+       public Query getQuery(Element e) throws ParserException
+       {
+               NodeList nl = e.getElementsByTagName("Field");
+               int maxNumTerms=DOMUtils.getAttribute(e,"maxNumTerms",defaultMaxNumTerms);
+               FuzzyLikeThisQuery fbq=new FuzzyLikeThisQuery(maxNumTerms,analyzer);
+               fbq.setIgnoreTF(DOMUtils.getAttribute(e,"ignoreTF",defaultIgnoreTF));
+               for(int i=0;i<nl.getLength();i++)
+               {
+                       Element fieldElem=(Element) nl.item(i);
+                       float minSimilarity=DOMUtils.getAttribute(fieldElem,"minSimilarity",defaultMinSimilarity);
+                       int prefixLength=DOMUtils.getAttribute(fieldElem,"prefixLength",defaultPrefixLength);
+                       String fieldName=DOMUtils.getAttributeWithInheritance(fieldElem,"fieldName");
+                       
+                       String value=DOMUtils.getText(fieldElem);
+                       fbq.addTerms(value,fieldName,minSimilarity,prefixLength);
+               }
+               fbq.setBoost(DOMUtils.getAttribute(e,"boost",1.0f));
+
+               return fbq;
+       }
+
+}