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.model.language;
018    
019    import javax.xml.bind.annotation.XmlAccessType;
020    import javax.xml.bind.annotation.XmlAccessorType;
021    import javax.xml.bind.annotation.XmlAttribute;
022    import javax.xml.bind.annotation.XmlRootElement;
023    import javax.xml.bind.annotation.XmlTransient;
024    
025    import org.apache.camel.Expression;
026    import org.apache.camel.Predicate;
027    import org.apache.camel.spi.RouteContext;
028    import org.apache.commons.logging.Log;
029    import org.apache.commons.logging.LogFactory;
030    
031    /**
032     * For XQuery expressions and predicates
033     *
034     * @version $Revision: 45033 $
035     */
036    @XmlRootElement(name = "xquery")
037    @XmlAccessorType(XmlAccessType.FIELD)
038    public class XQueryExpression extends NamespaceAwareExpression {
039        private static final transient Log LOG = LogFactory.getLog(XQueryExpression.class);
040    
041        @XmlAttribute(required = false)
042        private String type;
043        @XmlTransient
044        private Class resultType;
045    
046        public XQueryExpression() {
047        }
048    
049        public XQueryExpression(String expression) {
050            super(expression);
051        }
052    
053        public String getLanguage() {
054            return "xquery";
055        }
056    
057        public String getType() {
058            return type;
059        }
060    
061        public void setType(String type) {
062            this.type = type;
063        }
064    
065        public Class getResultType() {
066            return resultType;
067        }
068    
069        public void setResultType(Class resultType) {
070            this.resultType = resultType;
071        }
072    
073        @Override
074        protected void configureExpression(RouteContext routeContext, Expression expression) {
075            super.configureExpression(routeContext, expression);
076            updateResultType();
077            if (resultType != null) {
078                setProperty(expression, "resultType", resultType);
079            }
080        }
081    
082        @Override
083        protected void configurePredicate(RouteContext routeContext, Predicate predicate) {
084            super.configurePredicate(routeContext, predicate);
085            updateResultType();
086            if (resultType != null) {
087                setProperty(predicate, "resultType", resultType);
088            }
089        }
090    
091        private void updateResultType() {
092            if (resultType == null && type != null) {
093                try {
094                    resultType = Class.forName(type);
095                } catch (ClassNotFoundException e) {
096                    LOG.error("ClassNotFoundException creating class: " + type);
097                }
098            }
099        }
100    }