1 package org.apache.lucene.queryParser.core.nodes;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
8 * (the "License"); you may not use this file except in compliance with
9 * the License. You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
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14 * distributed under the License is distributed on an "AS IS" BASIS,
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16 * See the License for the specific language governing permissions and
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20 import java.util.List;
22 import org.apache.lucene.queryParser.core.parser.EscapeQuerySyntax;
25 * A {@link AndQueryNode} represents an AND boolean operation performed on a
28 public class AndQueryNode extends BooleanQueryNode {
30 private static final long serialVersionUID = 118496077529151825L;
34 * - the query nodes to be and'ed
36 public AndQueryNode(List<QueryNode> clauses) {
38 if ((clauses == null) || (clauses.size() == 0)) {
39 throw new IllegalArgumentException(
40 "AND query must have at least one clause");
45 public String toString() {
46 if (getChildren() == null || getChildren().size() == 0)
47 return "<boolean operation='and'/>";
48 StringBuilder sb = new StringBuilder();
49 sb.append("<boolean operation='and'>");
50 for (QueryNode child : getChildren()) {
52 sb.append(child.toString());
55 sb.append("\n</boolean>");
60 public CharSequence toQueryString(EscapeQuerySyntax escapeSyntaxParser) {
61 if (getChildren() == null || getChildren().size() == 0)
64 StringBuilder sb = new StringBuilder();
66 for (QueryNode child : getChildren()) {
67 sb.append(filler).append(child.toQueryString(escapeSyntaxParser));
71 // in case is root or the parent is a group node avoid parenthesis
72 if ((getParent() != null && getParent() instanceof GroupQueryNode)
76 return "( " + sb.toString() + " )";