/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.component.bean;
import java.lang.reflect.Method;
import java.util.Map;
import org.apache.camel.CamelContext;
import org.apache.camel.util.LRUCache;
/**
* Represents a cache of MethodInfo objects to avoid the expense of introspection for each invocation of a method
* via a proxy
*
* @version $Revision: 747062 $
*/
public class MethodInfoCache {
private final CamelContext camelContext;
private Map<Method, MethodInfo> methodCache;
private Map<Class, BeanInfo> classCache;
public MethodInfoCache(CamelContext camelContext) {
this(camelContext, 1000, 10000);
}
@SuppressWarnings("unchecked")
public MethodInfoCache(CamelContext camelContext, int classCacheSize, int methodCacheSize) {
this(camelContext, createLruCache(classCacheSize), createLruCache(methodCacheSize));
}
public MethodInfoCache(CamelContext camelContext, Map<Class, BeanInfo> classCache, Map<Method, MethodInfo> methodCache) {
this.camelContext = camelContext;
this.classCache = classCache;
this.methodCache = methodCache;
}
public synchronized MethodInfo getMethodInfo(Method method) {
MethodInfo answer = methodCache.get(method);
if (answer == null) {
answer = createMethodInfo(method);
methodCache.put(method, answer);
}
return answer;
}
protected MethodInfo createMethodInfo(Method method) {
Class<?> declaringClass = method.getDeclaringClass();
BeanInfo info = getBeanInfo(declaringClass);
return info.getMethodInfo(method);
}
protected synchronized BeanInfo getBeanInfo(Class<?> declaringClass) {
BeanInfo beanInfo = classCache.get(declaringClass);
if (beanInfo == null) {
beanInfo = createBeanInfo(declaringClass);
classCache.put(declaringClass, beanInfo);
}
return beanInfo;
}
protected BeanInfo createBeanInfo(Class<?> declaringClass) {
return new BeanInfo(camelContext, declaringClass);
}
protected static Map createLruCache(int size) {
return new LRUCache(size);
}
}