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.bean;
018
019import java.util.Map;
020
021import org.apache.camel.Endpoint;
022import org.apache.camel.impl.UriEndpointComponent;
023import org.apache.camel.util.LRUSoftCache;
024import org.slf4j.Logger;
025import org.slf4j.LoggerFactory;
026
027/**
028 * The <a href="http://camel.apache.org/bean.html">Bean Component</a> is for invoking Java beans from Camel.
029 *
030 * @version 
031 */
032public class BeanComponent extends UriEndpointComponent {
033
034    private static final Logger LOG = LoggerFactory.getLogger(BeanComponent.class);
035    // use an internal soft cache for BeanInfo as they are costly to introspect
036    // for example the bean language using OGNL expression runs much faster reusing the BeanInfo from this cache
037    private final LRUSoftCache<BeanInfoCacheKey, BeanInfo> cache = new LRUSoftCache<BeanInfoCacheKey, BeanInfo>(1000);
038
039    public BeanComponent() {
040        super(BeanEndpoint.class);
041    }
042    
043    public BeanComponent(Class<? extends Endpoint> endpointClass) {
044        super(endpointClass);
045    }
046
047    // Implementation methods
048    //-----------------------------------------------------------------------
049    protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception {
050        BeanEndpoint endpoint = new BeanEndpoint(uri, this);
051        endpoint.setBeanName(remaining);
052        setProperties(endpoint, parameters);
053        // any remaining parameters are parameters for the bean
054        endpoint.setParameters(parameters);
055        return endpoint;
056    }
057    
058    BeanInfo getBeanInfoFromCache(BeanInfoCacheKey key) {
059        return cache.get(key);
060    }
061
062    void addBeanInfoToCache(BeanInfoCacheKey key, BeanInfo beanInfo) {
063        cache.put(key, beanInfo);
064    }
065
066    @Override
067    protected void doShutdown() throws Exception {
068        if (LOG.isDebugEnabled()) {
069            LOG.debug("Clearing BeanInfo cache[size={}, hits={}, misses={}, evicted={}]", new Object[]{cache.size(), cache.getHits(), cache.getMisses(), cache.getEvicted()});
070        }
071        cache.clear();
072    }
073}