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Lucene example source code file (SlopQueryNodeBuilder.java)

This example Lucene source code file (SlopQueryNodeBuilder.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lucene tags/keywords

multiphrasequery, phrasequery, phrasequery, query, query, querynodeexception, slopquerynode, slopquerynode, slopquerynodebuilder, slopquerynodebuilder, standardquerybuilder

The Lucene SlopQueryNodeBuilder.java source code

package org.apache.lucene.queryParser.standard.builders;

 * 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,
 * See the License for the specific language governing permissions and
 * limitations under the License.

import org.apache.lucene.queryParser.core.QueryNodeException;
import org.apache.lucene.queryParser.core.builders.QueryTreeBuilder;
import org.apache.lucene.queryParser.core.nodes.QueryNode;
import org.apache.lucene.queryParser.core.nodes.SlopQueryNode;
import org.apache.lucene.search.MultiPhraseQuery;
import org.apache.lucene.search.PhraseQuery;
import org.apache.lucene.search.Query;

 * This builder basically reads the {@link Query} object set on the
 * {@link SlopQueryNode} child using
 * {@link QueryTreeBuilder#QUERY_TREE_BUILDER_TAGID} and applies the slop value
 * defined in the {@link SlopQueryNode}.
public class SlopQueryNodeBuilder implements StandardQueryBuilder {

  public SlopQueryNodeBuilder() {
    // empty constructor

  public Query build(QueryNode queryNode) throws QueryNodeException {
    SlopQueryNode phraseSlopNode = (SlopQueryNode) queryNode;

    Query query = (Query) phraseSlopNode.getChild().getTag(

    if (query instanceof PhraseQuery) {
      ((PhraseQuery) query).setSlop(phraseSlopNode.getValue());

    } else {
      ((MultiPhraseQuery) query).setSlop(phraseSlopNode.getValue());

    return query;



Other Lucene examples (source code examples)

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