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.IntrospectionSupport;
024import org.apache.camel.util.LRUCacheFactory;
025import org.apache.camel.util.LRUSoftCache;
026import org.slf4j.Logger;
027import org.slf4j.LoggerFactory;
028
029/**
030 * The <a href="http://camel.apache.org/bean.html">Bean Component</a> is for invoking Java beans from Camel.
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    @SuppressWarnings("unchecked")
038    private final LRUSoftCache<BeanInfoCacheKey, BeanInfo> cache = LRUCacheFactory.newLRUSoftCache(1000);
039
040    public BeanComponent() {
041        super(BeanEndpoint.class);
042    }
043    
044    public BeanComponent(Class<? extends Endpoint> endpointClass) {
045        super(endpointClass);
046    }
047
048    // Implementation methods
049    //-----------------------------------------------------------------------
050    protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception {
051        BeanEndpoint endpoint = new BeanEndpoint(uri, this);
052        endpoint.setBeanName(remaining);
053        setProperties(endpoint, parameters);
054
055        // the bean.xxx options is for the bean
056        Map<String, Object> options = IntrospectionSupport.extractProperties(parameters, "bean.");
057        endpoint.setParameters(options);
058        return endpoint;
059    }
060    
061    BeanInfo getBeanInfoFromCache(BeanInfoCacheKey key) {
062        return cache.get(key);
063    }
064
065    void addBeanInfoToCache(BeanInfoCacheKey key, BeanInfo beanInfo) {
066        cache.put(key, beanInfo);
067    }
068
069    @Override
070    protected void doShutdown() throws Exception {
071        if (LOG.isDebugEnabled()) {
072            LOG.debug("Clearing BeanInfo cache[size={}, hits={}, misses={}, evicted={}]", new Object[]{cache.size(), cache.getHits(), cache.getMisses(), cache.getEvicted()});
073        }
074        cache.clear();
075    }
076}