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.spi.Metadata; 024import org.apache.camel.util.IntrospectionSupport; 025import org.apache.camel.util.LRUCache; 026import org.apache.camel.util.LRUCacheFactory; 027import org.slf4j.Logger; 028import org.slf4j.LoggerFactory; 029 030/** 031 * The <a href="http://camel.apache.org/bean.html">Bean Component</a> is for invoking Java beans from Camel. 032 */ 033public class BeanComponent extends UriEndpointComponent { 034 035 private static final Logger LOG = LoggerFactory.getLogger(BeanComponent.class); 036 // use an internal soft cache for BeanInfo as they are costly to introspect 037 // for example the bean language using OGNL expression runs much faster reusing the BeanInfo from this cache 038 @SuppressWarnings("unchecked") 039 private final Map<BeanInfoCacheKey, BeanInfo> beanInfoCache = LRUCacheFactory.newLRUSoftCache(1000); 040 041 @Metadata(label = "advanced", description = "If enabled, Camel will cache the result of the first Registry look-up." 042 + " Cache can be enabled if the bean in the Registry is defined as a singleton scope.") 043 private Boolean cache; 044 045 public BeanComponent() { 046 super(BeanEndpoint.class); 047 } 048 049 public BeanComponent(Class<? extends Endpoint> endpointClass) { 050 super(endpointClass); 051 } 052 053 // Implementation methods 054 //----------------------------------------------------------------------- 055 protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception { 056 BeanEndpoint endpoint = new BeanEndpoint(uri, this); 057 endpoint.setBeanName(remaining); 058 endpoint.setCache(cache); 059 setProperties(endpoint, parameters); 060 061 // the bean.xxx options is for the bean 062 Map<String, Object> options = IntrospectionSupport.extractProperties(parameters, "bean."); 063 endpoint.setParameters(options); 064 return endpoint; 065 } 066 067 BeanInfo getBeanInfoFromCache(BeanInfoCacheKey key) { 068 return beanInfoCache.get(key); 069 } 070 071 void addBeanInfoToCache(BeanInfoCacheKey key, BeanInfo beanInfo) { 072 beanInfoCache.put(key, beanInfo); 073 } 074 075 @Override 076 protected void doShutdown() throws Exception { 077 if (LOG.isDebugEnabled() && beanInfoCache instanceof LRUCache) { 078 LRUCache cache = (LRUCache) this.beanInfoCache; 079 LOG.debug("Clearing BeanInfo cache[size={}, hits={}, misses={}, evicted={}]", cache.size(), cache.getHits(), cache.getMisses(), cache.getEvicted()); 080 } 081 beanInfoCache.clear(); 082 } 083 084 public Boolean getCache() { 085 return cache; 086 } 087 088 /** 089 * If enabled, Camel will cache the result of the first Registry look-up. 090 * Cache can be enabled if the bean in the Registry is defined as a singleton scope. 091 */ 092 public void setCache(Boolean cache) { 093 this.cache = cache; 094 } 095}