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.component.beanclass;
018
019import java.util.Map;
020
021import org.apache.camel.Endpoint;
022import org.apache.camel.component.bean.BeanComponent;
023import org.apache.camel.component.bean.BeanHolder;
024import org.apache.camel.component.bean.ConstantBeanHolder;
025import org.apache.camel.component.bean.ConstantTypeBeanHolder;
026import org.apache.camel.util.IntrospectionSupport;
027
028/**
029 * The <a href="http://camel.apache.org/class.html">Class Component</a> is for binding JavaBeans to Camel message exchanges based on class name.
030 * <p/>
031 * This component is an extension to the {@link org.apache.camel.component.bean.BeanComponent}.
032 *
033 * @version 
034 */
035public class ClassComponent extends BeanComponent {
036
037    public ClassComponent() {
038        super(ClassEndpoint.class);
039    }
040
041    protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception {
042        ClassEndpoint endpoint = new ClassEndpoint(uri, this);
043        endpoint.setBeanName(remaining);
044
045        // bean name is the FQN
046        String name = endpoint.getBeanName();
047        Class<?> clazz = getCamelContext().getClassResolver().resolveMandatoryClass(name);
048
049        // the bean.xxx options is for the bean
050        Map<String, Object> options = IntrospectionSupport.extractProperties(parameters, "bean.");
051        endpoint.setParameters(options);
052
053        BeanHolder holder;
054
055        // if there is options then we need to create a bean instance
056        if (!options.isEmpty()) {
057            // create bean
058            Object bean = getCamelContext().getInjector().newInstance(clazz);
059
060            // now set additional properties on it
061            setProperties(bean, options);
062
063            holder = new ConstantBeanHolder(bean, getCamelContext());
064        } else {
065            // otherwise refer to the type
066            holder = new ConstantTypeBeanHolder(clazz, getCamelContext());
067        }
068
069        validateParameters(uri, options, null);
070
071        // and register the bean as a holder on the endpoint
072        endpoint.setBeanHolder(holder);
073
074        return endpoint;
075    }
076
077}