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Lucene example source code file (BooleanModifiersQueryNodeProcessor.java)
The Lucene BooleanModifiersQueryNodeProcessor.java source codepackage org.apache.lucene.queryParser.precedence.processors; /** * 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.util.ArrayList; import java.util.List; import org.apache.lucene.queryParser.core.QueryNodeException; import org.apache.lucene.queryParser.core.nodes.AndQueryNode; import org.apache.lucene.queryParser.core.nodes.BooleanQueryNode; import org.apache.lucene.queryParser.core.nodes.ModifierQueryNode; import org.apache.lucene.queryParser.core.nodes.OrQueryNode; import org.apache.lucene.queryParser.core.nodes.QueryNode; import org.apache.lucene.queryParser.core.nodes.ModifierQueryNode.Modifier; import org.apache.lucene.queryParser.core.processors.QueryNodeProcessorImpl; import org.apache.lucene.queryParser.precedence.PrecedenceQueryParser; import org.apache.lucene.queryParser.standard.config.DefaultOperatorAttribute; import org.apache.lucene.queryParser.standard.config.DefaultOperatorAttribute.Operator; /** * <p> * This processor is used to apply the correct {@link ModifierQueryNode} to {@link BooleanQueryNode}s children. * </p> * <p> * It walks through the query node tree looking for {@link BooleanQueryNode}s. If an {@link AndQueryNode} is found, * every child, which is not a {@link ModifierQueryNode} or the {@link ModifierQueryNode} * is {@link Modifier#MOD_NONE}, becomes a {@link Modifier#MOD_REQ}. For any other * {@link BooleanQueryNode} which is not an {@link OrQueryNode}, it checks the default operator is {@link Operator#AND}, * if it is, the same operation when an {@link AndQueryNode} is found is applied to it. * </p> * * @see DefaultOperatorAttribute * @see PrecedenceQueryParser#setDefaultOperator */ public class BooleanModifiersQueryNodeProcessor extends QueryNodeProcessorImpl { private ArrayList<QueryNode> childrenBuffer = new ArrayList Other Lucene examples (source code examples)Here is a short list of links related to this Lucene BooleanModifiersQueryNodeProcessor.java source code file: |
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