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.spring;
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.CamelContext;
026    import org.apache.camel.CamelContextAware;
027    import org.apache.camel.Endpoint;
028    import org.apache.camel.NoSuchEndpointException;
029    import org.apache.camel.model.IdentifiedType;
030    import org.springframework.beans.factory.FactoryBean;
031    
032    import static org.apache.camel.util.ObjectHelper.notNull;
033    
034    /**
035     * A {@link FactoryBean} which instantiates {@link Endpoint} objects
036     *
037     * @version $Revision: 817970 $
038     */
039    @XmlRootElement(name = "endpoint")
040    @XmlAccessorType(XmlAccessType.FIELD)
041    public class CamelEndpointFactoryBean extends IdentifiedType implements FactoryBean, CamelContextAware {
042        @XmlAttribute
043        private String uri;
044        @XmlTransient
045        private CamelContext context;
046        @XmlTransient
047        private Endpoint endpoint;
048    
049        public Object getObject() throws Exception {
050            if (endpoint == null) {
051                endpoint = createEndpoint();
052            }
053            return endpoint;
054        }
055    
056        public Class getObjectType() {
057            return Endpoint.class;
058        }
059    
060        public boolean isSingleton() {
061            if (endpoint == null) {
062                this.endpoint = createEndpoint();
063            }
064            return endpoint.isSingleton();
065        }
066    
067        public CamelContext getCamelContext() {
068            return context;
069        }
070    
071        /**
072         * Sets the context to use to resolve endpoints
073         *
074         * @param context the context used to resolve endpoints
075         */
076        public void setCamelContext(CamelContext context) {
077            this.context = context;
078        }
079    
080        public String getUri() {
081            return uri;
082        }
083    
084        /**
085         * Sets the URI to use to resolve the endpoint
086         *
087         * @param uri the URI used to set the endpoint
088         */
089        public void setUri(String uri) {
090            this.uri = uri;
091        }
092    
093        protected Endpoint createEndpoint() {
094            notNull(context, "context");
095            notNull(uri, "uri");
096            Endpoint endpoint = context.getEndpoint(uri);
097            if (endpoint == null) {
098                throw new NoSuchEndpointException(uri);
099            }
100            return endpoint;
101        }
102    }