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 */
017package org.apache.camel.model;
018
019import javax.xml.bind.annotation.XmlAccessType;
020import javax.xml.bind.annotation.XmlAccessorType;
021import javax.xml.bind.annotation.XmlAttribute;
022import javax.xml.bind.annotation.XmlRootElement;
023
024import org.apache.camel.Exchange;
025import org.apache.camel.Processor;
026import org.apache.camel.spi.Metadata;
027import org.apache.camel.spi.RouteContext;
028import org.apache.camel.support.ExpressionAdapter;
029
030/**
031 * Intercepts incoming messages
032 *
033 * @version 
034 */
035@Metadata(label = "configuration")
036@XmlRootElement(name = "interceptFrom")
037@XmlAccessorType(XmlAccessType.FIELD)
038public class InterceptFromDefinition extends InterceptDefinition {
039    @XmlAttribute
040    protected String uri;
041
042    public InterceptFromDefinition() {
043    }
044
045    public InterceptFromDefinition(String uri) {
046        this.uri = uri;
047    }
048
049    @Override
050    public String toString() {
051        return "InterceptFrom[" + getOutputs() + "]";
052    }
053
054    @Override
055    public String getLabel() {
056        return "interceptFrom";
057    }
058
059    @Override
060    public boolean isAbstract() {
061        return true;
062    }
063
064    @Override
065    public boolean isTopLevelOnly() {
066        return true;
067    }
068
069    @Override
070    @SuppressWarnings({"unchecked", "rawtypes"})
071    public Processor createProcessor(RouteContext routeContext) throws Exception {
072        // insert a set header definition so we can set the intercepted endpoint uri as a header
073        // this allows us to use the same header for both the interceptFrom and interceptSendToEndpoint
074        SetHeaderDefinition headerDefinition = new SetHeaderDefinition(Exchange.INTERCEPTED_ENDPOINT, new ExpressionAdapter() {
075            public Object evaluate(Exchange exchange, Class type) {
076                if (exchange.getFromEndpoint() != null) {
077                    return exchange.getFromEndpoint().getEndpointUri();
078                } else {
079                    return null;
080                }
081            }
082
083            public String toString() {
084                return "";
085            }
086        });
087        getOutputs().add(0, headerDefinition);
088
089        return this.createChildProcessor(routeContext, true);
090    }
091
092    public String getUri() {
093        return uri;
094    }
095
096    /**
097     * Intercept incoming messages from the uri or uri pattern.
098     * If this option is not configured, then all incoming messages is intercepted.
099     */
100    public void setUri(String uri) {
101        this.uri = uri;
102    }
103}