+++ /dev/null
-package org.apache.lucene.queryParser.core.nodes;
-
-/**
- * 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.messages.MessageImpl;
-import org.apache.lucene.queryParser.core.QueryNodeError;
-import org.apache.lucene.queryParser.core.messages.QueryParserMessages;
-import org.apache.lucene.queryParser.core.parser.EscapeQuerySyntax;
-
-/**
- * A {@link GroupQueryNode} represents a location where the original user typed
- * real parenthesis on the query string. This class is useful for queries like:
- * a) a AND b OR c b) ( a AND b) OR c
- *
- * Parenthesis might be used to define the boolean operation precedence.
- */
-public class GroupQueryNode extends QueryNodeImpl {
-
- private static final long serialVersionUID = -9204673493869114999L;
-
- /**
- * This QueryNode is used to identify parenthesis on the original query string
- */
- public GroupQueryNode(QueryNode query) {
- if (query == null) {
- throw new QueryNodeError(new MessageImpl(
- QueryParserMessages.PARAMETER_VALUE_NOT_SUPPORTED, "query", "null"));
- }
-
- allocate();
- setLeaf(false);
- add(query);
- }
-
- public QueryNode getChild() {
- return getChildren().get(0);
- }
-
- @Override
- public String toString() {
- return "<group>" + "\n" + getChild().toString() + "\n</group>";
- }
-
- public CharSequence toQueryString(EscapeQuerySyntax escapeSyntaxParser) {
- if (getChild() == null)
- return "";
-
- return "( " + getChild().toQueryString(escapeSyntaxParser) + " )";
- }
-
- @Override
- public QueryNode cloneTree() throws CloneNotSupportedException {
- GroupQueryNode clone = (GroupQueryNode) super.cloneTree();
-
- return clone;
- }
-
- /**
- * @param child
- */
- public void setChild(QueryNode child) {
- List<QueryNode> list = new ArrayList<QueryNode>();
- list.add(child);
- this.set(list);
- }
-
-}