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.builder.xml;
018    
019    import javax.xml.namespace.QName;
020    
021    import org.apache.camel.Exchange;
022    import org.apache.camel.Expression;
023    import org.apache.camel.Predicate;
024    import org.apache.camel.spi.Language;
025    
026    /**
027     * XPath language.
028     *
029     * @version $Revision: 41826 $
030     */
031    public class XPathLanguage implements Language {
032        private QName resultType;
033    
034        public Predicate<Exchange> createPredicate(String expression) {
035            XPathBuilder builder = XPathBuilder.xpath(expression);
036            configureBuilder(builder);
037            return builder;
038        }
039    
040        public Expression<Exchange> createExpression(String expression) {
041            XPathBuilder builder = XPathBuilder.xpath(expression);
042            configureBuilder(builder);
043            return builder;
044        }
045    
046        public QName getResultType() {
047            return resultType;
048        }
049    
050        public void setResultType(QName resultType) {
051            this.resultType = resultType;
052        }
053    
054        protected void configureBuilder(XPathBuilder builder) {
055            if (resultType != null) {
056                builder.setResultQName(resultType);
057            }
058        }
059    }