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Lucene example source code file (TopTermsRewrite.java)
The Lucene TopTermsRewrite.java source codepackage org.apache.lucene.search; /** * 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. */ import java.io.IOException; import java.util.PriorityQueue; import org.apache.lucene.index.IndexReader; import org.apache.lucene.index.Term; /** * Base rewrite method for collecting only the top terms * via a priority queue. * @lucene.internal Only public to be accessible by spans package. */ public abstract class TopTermsRewrite<Q extends Query> extends TermCollectingRewrite{ private final int size; /** * Create a TopTermsBooleanQueryRewrite for * at most <code>size terms. * <p> * NOTE: if {@link BooleanQuery#getMaxClauseCount} is smaller than * <code>size, then it will be used instead. */ public TopTermsRewrite(int size) { this.size = size; } /** return the maximum priority queue size */ public int getSize() { return size; } /** return the maximum size of the priority queue (for boolean rewrites this is BooleanQuery#getMaxClauseCount). */ protected abstract int getMaxSize(); @Override public Q rewrite(final IndexReader reader, final MultiTermQuery query) throws IOException { final int maxSize = Math.min(size, getMaxSize()); final PriorityQueue<ScoreTerm> stQueue = new PriorityQueue Other Lucene examples (source code examples)Here is a short list of links related to this Lucene TopTermsRewrite.java source code file: |
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