X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.5.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/TermsFilterBuilder.java?ds=sidebyside

diff --git a/lucene-java-3.5.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/TermsFilterBuilder.java b/lucene-java-3.5.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/TermsFilterBuilder.java
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+++ b/lucene-java-3.5.0/lucene/contrib/xml-query-parser/src/java/org/apache/lucene/xmlparser/builders/TermsFilterBuilder.java
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+package org.apache.lucene.xmlparser.builders;
+
+import java.io.IOException;
+import java.io.StringReader;
+
+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.Filter;
+import org.apache.lucene.search.TermsFilter;
+import org.apache.lucene.xmlparser.DOMUtils;
+import org.apache.lucene.xmlparser.FilterBuilder;
+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 TermsFilterBuilder implements FilterBuilder
+{
+	Analyzer analyzer;
+	
+	/**
+	 * @param analyzer
+	 */
+	public TermsFilterBuilder(Analyzer analyzer)
+	{
+		this.analyzer = analyzer;
+	}
+	
+	/*
+	 * (non-Javadoc)
+	 * 
+	 * @see org.apache.lucene.xmlparser.FilterBuilder#process(org.w3c.dom.Element)
+	 */
+	public Filter getFilter(Element e) throws ParserException
+	{
+		TermsFilter tf = new TermsFilter();
+		String text = DOMUtils.getNonBlankTextOrFail(e);
+		String fieldName = DOMUtils.getAttributeWithInheritanceOrFail(e, "fieldName");
+    
+		try
+		{
+	    TokenStream ts = analyzer.reusableTokenStream(fieldName, new StringReader(text));
+	    CharTermAttribute termAtt = ts.addAttribute(CharTermAttribute.class);
+			Term term = null;
+      ts.reset();
+	      while (ts.incrementToken()) {
+				if (term == null)
+				{
+					term = new Term(fieldName, termAtt.toString());
+				} else
+				{
+//					 create from previous to save fieldName.intern overhead
+					term = term.createTerm(termAtt.toString()); 
+				}
+				tf.addTerm(term);
+			}
+	    ts.end();
+	    ts.close();
+		} 
+		catch (IOException ioe)
+		{
+			throw new RuntimeException("Error constructing terms from index:"
+					+ ioe);
+		}
+		return tf;
+	}
+}