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;
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.Processor;
026    import org.apache.camel.processor.ThrowExceptionProcessor;
027    import org.apache.camel.spi.RouteContext;
028    import org.apache.camel.util.ObjectHelper;
029    
030    /**
031     * Represents an XML <throwException/> element
032     */
033    @XmlRootElement(name = "throwException")
034    @XmlAccessorType(XmlAccessType.FIELD)
035    public class ThrowExceptionDefinition extends NoOutputDefinition<ThrowExceptionDefinition> {
036        @XmlAttribute(required = true)
037        // the ref is required from tooling and XML DSL
038        private String ref;
039        @XmlTransient
040        private Exception exception;
041    
042        public ThrowExceptionDefinition() {
043        }
044    
045        @Override
046        public String getShortName() {
047            return "throwException";
048        }
049    
050        @Override
051        public String toString() {
052            return "ThrowException[" + description() + "]";
053        }
054    
055        protected String description() {
056            return exception != null ? exception.getClass().getCanonicalName() : "ref:" + ref;
057        }
058    
059        @Override
060        public String getLabel() {
061            return "throwException[" + description() + "]";
062        }
063        
064        @Override
065        public Processor createProcessor(RouteContext routeContext) {
066            if (ref != null && exception == null) {
067                this.exception = routeContext.getCamelContext().getRegistry().lookup(ref, Exception.class);
068            }
069    
070            ObjectHelper.notNull(exception, "exception or ref", this);
071            return new ThrowExceptionProcessor(exception);
072        }
073    
074        public String getRef() {
075            return ref;
076        }
077    
078        public void setRef(String ref) {
079            this.ref = ref;
080        }
081    
082        public Exception getException() {
083            return exception;
084        }
085    
086        public void setException(Exception exception) {
087            this.exception = exception;
088        }
089    }