| /* |
| * 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 org.apache.lucene.queryparser.flexible.core.nodes.FieldableNode; |
| import org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImpl; |
| import org.apache.lucene.queryparser.flexible.core.nodes.TextableQueryNode; |
| import org.apache.lucene.queryparser.flexible.core.parser.EscapeQuerySyntax; |
| import org.apache.lucene.search.RegexpQuery; |
| import org.apache.lucene.util.BytesRef; |
| |
| /** |
| * A {@link RegexpQueryNode} represents {@link RegexpQuery} query Examples: /[a-z]|[0-9]/ |
| */ |
| public class RegexpQueryNode extends QueryNodeImpl implements TextableQueryNode, |
| FieldableNode { |
| private CharSequence text; |
| private CharSequence field; |
| /** |
| * @param field |
| * - field name |
| * @param text |
| * - value that contains a regular expression |
| * @param begin |
| * - position in the query string |
| * @param end |
| * - position in the query string |
| */ |
| public RegexpQueryNode(CharSequence field, CharSequence text, int begin, |
| int end) { |
| this.field = field; |
| this.text = text.subSequence(begin, end); |
| } |
| |
| public BytesRef textToBytesRef() { |
| return new BytesRef(text); |
| } |
| |
| @Override |
| public String toString() { |
| return "<regexp field='" + this.field + "' term='" + this.text + "'/>"; |
| } |
| |
| @Override |
| public RegexpQueryNode cloneTree() throws CloneNotSupportedException { |
| RegexpQueryNode clone = (RegexpQueryNode) super.cloneTree(); |
| clone.field = this.field; |
| clone.text = this.text; |
| return clone; |
| } |
| |
| @Override |
| public CharSequence getText() { |
| return text; |
| } |
| |
| @Override |
| public void setText(CharSequence text) { |
| this.text = text; |
| } |
| |
| @Override |
| public CharSequence getField() { |
| return field; |
| } |
| |
| public String getFieldAsString() { |
| return field.toString(); |
| } |
| |
| @Override |
| public void setField(CharSequence field) { |
| this.field = field; |
| } |
| |
| @Override |
| public CharSequence toQueryString(EscapeQuerySyntax escapeSyntaxParser) { |
| return isDefaultField(field)? "/"+text+"/": field + ":/" + text + "/"; |
| } |
| |
| } |