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 java.util.Map;
020
021 import org.apache.camel.Endpoint;
022 import org.apache.camel.Processor;
023 import org.apache.camel.impl.ProcessorEndpoint;
024 import org.apache.camel.impl.UriEndpointComponent;
025 import org.apache.camel.util.LRUSoftCache;
026 import org.slf4j.Logger;
027 import org.slf4j.LoggerFactory;
028
029 /**
030 * The <a href="http://camel.apache.org/bean.html">Bean Component</a>
031 * will look up the URI in the {@link org.apache.camel.spi.Registry} and use that to handle message dispatching.
032 *
033 * @version
034 */
035 public class BeanComponent extends UriEndpointComponent {
036
037 private static final Logger LOG = LoggerFactory.getLogger(BeanComponent.class);
038 // use an internal soft cache for BeanInfo as they are costly to introspect
039 // for example the bean language using OGNL expression runs much faster reusing the BeanInfo from this cache
040 private final LRUSoftCache<BeanInfoCacheKey, BeanInfo> cache = new LRUSoftCache<BeanInfoCacheKey, BeanInfo>(1000);
041
042 public BeanComponent() {
043 super(BeanEndpoint.class);
044 }
045
046 /**
047 * A helper method to create a new endpoint from a bean with a generated URI
048 */
049 public ProcessorEndpoint createEndpoint(Object bean) {
050 // used by servicemix-camel
051 String uri = "bean:generated:" + bean;
052 return createEndpoint(bean, uri);
053 }
054
055 /**
056 * A helper method to create a new endpoint from a bean with a given URI
057 */
058 public ProcessorEndpoint createEndpoint(Object bean, String uri) {
059 // used by servicemix-camel
060 BeanProcessor processor = new BeanProcessor(bean, getCamelContext());
061 return createEndpoint(uri, processor);
062 }
063
064 // Implementation methods
065 //-----------------------------------------------------------------------
066 protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception {
067 BeanEndpoint endpoint = new BeanEndpoint(uri, this);
068 endpoint.setBeanName(remaining);
069 Boolean cache = getAndRemoveParameter(parameters, "cache", Boolean.class, Boolean.FALSE);
070 endpoint.setCache(cache);
071 Processor processor = endpoint.getProcessor();
072 setProperties(processor, parameters);
073 return endpoint;
074 }
075
076 protected BeanEndpoint createEndpoint(String uri, BeanProcessor processor) {
077 return new BeanEndpoint(uri, this, processor);
078 }
079
080 BeanInfo getBeanInfoFromCache(BeanInfoCacheKey key) {
081 return cache.get(key);
082 }
083
084 void addBeanInfoToCache(BeanInfoCacheKey key, BeanInfo beanInfo) {
085 cache.put(key, beanInfo);
086 }
087
088 @Override
089 protected void doShutdown() throws Exception {
090 if (LOG.isDebugEnabled()) {
091 LOG.debug("Clearing BeanInfo cache[size={}, hits={}, misses={}, evicted={}]", new Object[]{cache.size(), cache.getHits(), cache.getMisses(), cache.getEvicted()});
092 }
093 cache.clear();
094 }
095 }