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Lucene example source code file (MatchAllDocsQueryNodeProcessor.java)
The Lucene MatchAllDocsQueryNodeProcessor.java source codepackage org.apache.lucene.queryParser.standard.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.List; import org.apache.lucene.queryParser.core.QueryNodeException; import org.apache.lucene.queryParser.core.nodes.FieldQueryNode; import org.apache.lucene.queryParser.core.nodes.MatchAllDocsQueryNode; import org.apache.lucene.queryParser.core.nodes.QueryNode; import org.apache.lucene.queryParser.core.processors.QueryNodeProcessorImpl; import org.apache.lucene.queryParser.standard.nodes.WildcardQueryNode; import org.apache.lucene.search.MatchAllDocsQuery; /** * This processor converts every {@link WildcardQueryNode} that is "*:*" to * {@link MatchAllDocsQueryNode}. * * @see MatchAllDocsQueryNode * @see MatchAllDocsQuery */ public class MatchAllDocsQueryNodeProcessor extends QueryNodeProcessorImpl { public MatchAllDocsQueryNodeProcessor() { // empty constructor } @Override protected QueryNode postProcessNode(QueryNode node) throws QueryNodeException { if (node instanceof FieldQueryNode) { FieldQueryNode fqn = (FieldQueryNode) node; if (fqn.getField().toString().equals("*") && fqn.getText().toString().equals("*")) { return new MatchAllDocsQueryNode(); } } return node; } @Override protected QueryNode preProcessNode(QueryNode node) throws QueryNodeException { return node; } @Override protected List<QueryNode> setChildrenOrder(List Other Lucene examples (source code examples)Here is a short list of links related to this Lucene MatchAllDocsQueryNodeProcessor.java source code file: |
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