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package org.apache.lucene.queryParser.standard.builders;
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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import java.util.List;
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import org.apache.lucene.messages.MessageImpl;
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import org.apache.lucene.queryParser.core.QueryNodeException;
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import org.apache.lucene.queryParser.core.builders.QueryTreeBuilder;
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import org.apache.lucene.queryParser.core.messages.QueryParserMessages;
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import org.apache.lucene.queryParser.core.nodes.BooleanQueryNode;
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import org.apache.lucene.queryParser.core.nodes.ModifierQueryNode;
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import org.apache.lucene.queryParser.core.nodes.QueryNode;
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import org.apache.lucene.queryParser.standard.parser.EscapeQuerySyntaxImpl;
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import org.apache.lucene.search.BooleanClause;
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import org.apache.lucene.search.BooleanQuery;
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import org.apache.lucene.search.Query;
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import org.apache.lucene.search.BooleanQuery.TooManyClauses;
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* Builds a {@link BooleanQuery} object from a {@link BooleanQueryNode} object.
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* Every children in the {@link BooleanQueryNode} object must be already tagged
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* using {@link QueryTreeBuilder#QUERY_TREE_BUILDER_TAGID} with a {@link Query}
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* It takes in consideration if the children is a {@link ModifierQueryNode} to
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* define the {@link BooleanClause}.
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public class BooleanQueryNodeBuilder implements StandardQueryBuilder {
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public BooleanQueryNodeBuilder() {
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public BooleanQuery build(QueryNode queryNode) throws QueryNodeException {
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BooleanQueryNode booleanNode = (BooleanQueryNode) queryNode;
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BooleanQuery bQuery = new BooleanQuery();
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List<QueryNode> children = booleanNode.getChildren();
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if (children != null) {
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for (QueryNode child : children) {
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Object obj = child.getTag(QueryTreeBuilder.QUERY_TREE_BUILDER_TAGID);
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Query query = (Query) obj;
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bQuery.add(query, getModifierValue(child));
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} catch (TooManyClauses ex) {
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throw new QueryNodeException(new MessageImpl(
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QueryParserMessages.TOO_MANY_BOOLEAN_CLAUSES, BooleanQuery
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.getMaxClauseCount(), queryNode
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.toQueryString(new EscapeQuerySyntaxImpl())), ex);
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private static BooleanClause.Occur getModifierValue(QueryNode node)
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throws QueryNodeException {
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if (node instanceof ModifierQueryNode) {
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ModifierQueryNode mNode = ((ModifierQueryNode) node);
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switch (mNode.getModifier()) {
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return BooleanClause.Occur.MUST;
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return BooleanClause.Occur.MUST_NOT;
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return BooleanClause.Occur.SHOULD;
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return BooleanClause.Occur.SHOULD;