| /* |
| * 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. |
| */ |
| package org.apache.lucene.queryparser.flexible.standard.builders; |
| |
| import org.apache.lucene.queryparser.flexible.messages.MessageImpl; |
| import org.apache.lucene.queryparser.flexible.core.QueryNodeException; |
| import org.apache.lucene.queryparser.flexible.core.messages.QueryParserMessages; |
| import org.apache.lucene.queryparser.flexible.core.nodes.MatchAllDocsQueryNode; |
| import org.apache.lucene.queryparser.flexible.core.nodes.QueryNode; |
| import org.apache.lucene.queryparser.flexible.standard.parser.EscapeQuerySyntaxImpl; |
| import org.apache.lucene.search.MatchAllDocsQuery; |
| |
| /** |
| * Builds a {@link MatchAllDocsQuery} object from a |
| * {@link MatchAllDocsQueryNode} object. |
| */ |
| public class MatchAllDocsQueryNodeBuilder implements StandardQueryBuilder { |
| |
| public MatchAllDocsQueryNodeBuilder() { |
| // empty constructor |
| } |
| |
| @Override |
| public MatchAllDocsQuery build(QueryNode queryNode) throws QueryNodeException { |
| |
| // validates node |
| if (!(queryNode instanceof MatchAllDocsQueryNode)) { |
| throw new QueryNodeException(new MessageImpl( |
| QueryParserMessages.LUCENE_QUERY_CONVERSION_ERROR, queryNode |
| .toQueryString(new EscapeQuerySyntaxImpl()), queryNode.getClass() |
| .getName())); |
| } |
| |
| return new MatchAllDocsQuery(); |
| |
| } |
| |
| } |