pylucene 3.5.0-3

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

diff --git a/lucene-java-3.5.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/SpanOrTermsBuilder.java b/lucene-java-3.5.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/SpanOrTermsBuilder.java
new file mode 100644 (file)
index 0000000..cd13b45
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+++ b/lucene-java-3.5.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/SpanOrTermsBuilder.java
@@ -0,0 +1,78 @@
+package org.apache.lucene.xmlparser.builders;
+
+import java.io.IOException;
+import java.io.StringReader;
+import java.util.ArrayList;
+
+import org.apache.lucene.analysis.Analyzer;
+import org.apache.lucene.analysis.TokenStream;
+import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
+import org.apache.lucene.index.Term;
+import org.apache.lucene.search.spans.SpanOrQuery;
+import org.apache.lucene.search.spans.SpanQuery;
+import org.apache.lucene.search.spans.SpanTermQuery;
+import org.apache.lucene.xmlparser.DOMUtils;
+import org.apache.lucene.xmlparser.ParserException;
+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 SpanOrTermsBuilder extends SpanBuilderBase
+{
+    Analyzer analyzer;
+    
+    
+    /**
+     * @param analyzer
+     */
+    public SpanOrTermsBuilder(Analyzer analyzer)
+    {
+        super();
+        this.analyzer = analyzer;
+    }
+       public SpanQuery getSpanQuery(Element e) throws ParserException
+       {
+               String fieldName=DOMUtils.getAttributeWithInheritanceOrFail(e,"fieldName");
+               String value=DOMUtils.getNonBlankTextOrFail(e);
+               
+               try
+               {
+                       ArrayList<SpanQuery> clausesList=new ArrayList<SpanQuery>();
+                       TokenStream ts=analyzer.reusableTokenStream(fieldName,new StringReader(value));
+                       CharTermAttribute termAtt = ts.addAttribute(CharTermAttribute.class);
+                       
+      ts.reset();
+           while (ts.incrementToken()) {
+                           SpanTermQuery stq=new SpanTermQuery(new Term(fieldName, termAtt.toString()));
+                           clausesList.add(stq);
+                       }
+           ts.end();
+           ts.close();
+                       SpanOrQuery soq=new SpanOrQuery(clausesList.toArray(new SpanQuery[clausesList.size()]));
+                       soq.setBoost(DOMUtils.getAttribute(e,"boost",1.0f));
+                       return soq;
+               }
+               catch(IOException ioe)
+               {
+                   throw new ParserException("IOException parsing value:"+value);
+               }
+       }
+
+}