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.component.bean;
018    
019    import org.apache.camel.NoSuchBeanException;
020    import org.apache.camel.Processor;
021    
022    /**
023     * Object holder for a bean.
024     *
025     * @version 
026     */
027    public interface BeanHolder {
028    
029        /**
030         * Gets the bean.
031         *
032         * @throws NoSuchBeanException is thrown if the bean cannot be found.
033         */
034        Object getBean() throws NoSuchBeanException;
035    
036        /**
037         * Gets a {@link Processor} for this bean, if supported.
038         *
039         * @return the {@link Processor}, or <tt>null</tt> if not supported.
040         */
041        Processor getProcessor();
042    
043        /**
044         * Gets bean info for the bean.
045         */
046        BeanInfo getBeanInfo();
047    
048        /**
049         * Gets bean info for the given bean.
050         * <p/>
051         * This implementation allows a thread safe usage for {@link BeanHolder} implementations
052         * such as the {@link RegistryBean}.
053         *
054         * @param bean the bean
055         * @return <tt>null</tt> if not supported, then use {@link #getBeanInfo()} instead.
056         */
057        BeanInfo getBeanInfo(Object bean);
058    }