001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel.language.xpath;
018
019 import javax.xml.namespace.QName;
020
021 import org.apache.camel.Expression;
022 import org.apache.camel.IsSingleton;
023 import org.apache.camel.Predicate;
024 import org.apache.camel.builder.xml.XPathBuilder;
025 import org.apache.camel.spi.Language;
026
027 /**
028 * XPath language.
029 *
030 * @version $Revision: 752893 $
031 */
032 public class XPathLanguage implements Language, IsSingleton {
033 private QName resultType;
034
035 public Predicate createPredicate(String expression) {
036 XPathBuilder builder = XPathBuilder.xpath(expression);
037 configureBuilder(builder);
038 return builder;
039 }
040
041 public Expression createExpression(String expression) {
042 XPathBuilder builder = XPathBuilder.xpath(expression);
043 configureBuilder(builder);
044 return builder;
045 }
046
047 public QName getResultType() {
048 return resultType;
049 }
050
051 public void setResultType(QName resultType) {
052 this.resultType = resultType;
053 }
054
055 protected void configureBuilder(XPathBuilder builder) {
056 if (resultType != null) {
057 builder.setResultQName(resultType);
058 }
059 }
060
061 public boolean isSingleton() {
062 return false;
063 }
064 }