| /* |
| * 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.nodes; |
| |
| import java.util.List; |
| |
| import org.apache.lucene.queryparser.flexible.core.nodes.FieldableNode; |
| import org.apache.lucene.queryparser.flexible.core.nodes.QueryNode; |
| import org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImpl; |
| import org.apache.lucene.queryparser.flexible.core.parser.EscapeQuerySyntax; |
| import org.apache.lucene.search.MultiPhraseQuery; |
| import org.apache.lucene.search.PhraseQuery; |
| |
| /** |
| * A {@link MultiPhraseQueryNode} indicates that its children should be used to |
| * build a {@link MultiPhraseQuery} instead of {@link PhraseQuery}. |
| */ |
| public class MultiPhraseQueryNode extends QueryNodeImpl implements |
| FieldableNode { |
| |
| public MultiPhraseQueryNode() { |
| setLeaf(false); |
| allocate(); |
| |
| } |
| |
| @Override |
| public String toString() { |
| if (getChildren() == null || getChildren().size() == 0) |
| return "<multiPhrase/>"; |
| StringBuilder sb = new StringBuilder(); |
| sb.append("<multiPhrase>"); |
| for (QueryNode child : getChildren()) { |
| sb.append("\n"); |
| sb.append(child.toString()); |
| } |
| sb.append("\n</multiPhrase>"); |
| return sb.toString(); |
| } |
| |
| @Override |
| public CharSequence toQueryString(EscapeQuerySyntax escapeSyntaxParser) { |
| if (getChildren() == null || getChildren().size() == 0) |
| return ""; |
| |
| StringBuilder sb = new StringBuilder(); |
| String filler = ""; |
| for (QueryNode child : getChildren()) { |
| sb.append(filler).append(child.toQueryString(escapeSyntaxParser)); |
| filler = ","; |
| } |
| |
| return "[MTP[" + sb.toString() + "]]"; |
| } |
| |
| @Override |
| public QueryNode cloneTree() throws CloneNotSupportedException { |
| MultiPhraseQueryNode clone = (MultiPhraseQueryNode) super.cloneTree(); |
| |
| // nothing to do |
| |
| return clone; |
| } |
| |
| @Override |
| public CharSequence getField() { |
| List<QueryNode> children = getChildren(); |
| |
| if (children == null || children.size() == 0) { |
| return null; |
| |
| } else { |
| return ((FieldableNode) children.get(0)).getField(); |
| } |
| |
| } |
| |
| @Override |
| public void setField(CharSequence fieldName) { |
| List<QueryNode> children = getChildren(); |
| |
| if (children != null) { |
| |
| for (QueryNode child : children) { |
| |
| if (child instanceof FieldableNode) { |
| ((FieldableNode) child).setField(fieldName); |
| } |
| |
| } |
| |
| } |
| |
| } |
| |
| } // end class MultitermQueryNode |