com.jdon.aop.reflection.MethodInvokerUtil Maven / Gradle / Ivy
/*
* Copyright 2003-2006 the original author or authors.
* Licensed 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 com.jdon.aop.reflection;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import com.jdon.bussinessproxy.TargetMetaDef;
import com.jdon.bussinessproxy.target.TargetServiceFactory;
import com.jdon.container.access.TargetMetaRequest;
import com.jdon.container.access.TargetMetaRequestsHolder;
import com.jdon.container.finder.ComponentKeys;
import com.jdon.container.visitor.ComponentVisitor;
import com.jdon.util.Debug;
/**
* tools for method invoke
*
* @author banq
*
*/
public class MethodInvokerUtil {
private final static String module = MethodInvokerUtil.class.getName();
private final TargetMetaRequestsHolder targetMetaRequestsHolder;
public MethodInvokerUtil(TargetMetaRequestsHolder targetMetaRequestsHolder) {
super();
this.targetMetaRequestsHolder = targetMetaRequestsHolder;
}
/**
* the service execute by method reflection
*
* @param method
* @param targetObj
* @param p_args
* @return
* @throws Throwable
*/
public Object execute(Method method, Object targetObj, Object[] p_args) throws Throwable {
try {
if ((method == null) || (targetObj == null))
Debug.logError("[JdonFramework] no method or target, please check your configure", module);
if (p_args == null)
p_args = new Object[0];
Debug.logVerbose("[JdonFramework] method invoke: " + targetObj.getClass().getName() + " method=" + method.getName(), module);
Object result = method.invoke(targetObj, p_args);
Debug.logVerbose("[JdonFramework] method invoke successfully ", module);
return result;
} catch (IllegalArgumentException iex) {
String errorInfo = "Errors happened in your method:[" + targetObj.getClass().getName() + "." + method.getName() + "]";
Debug.logError(errorInfo, module);
errorInfo = "[JdonFramework] method invoke IllegalArgumentException: " + iex + " method argument type :[" + method.getParameterTypes()
+ "], but method arguments value p_args type:" + p_args.getClass().getName();
Debug.logError(errorInfo, module);
throw new Throwable(errorInfo, iex);
} catch (InvocationTargetException ex) {
Debug.logError(ex);
String errorInfo = "Errors happened in your method:[" + targetObj.getClass().getName() + "." + method.getName() + "]";
Debug.logError(errorInfo, module);
throw new Throwable(errorInfo);
} catch (IllegalAccessException ex) {
String errorInfo = "Errors happened in your method:[" + targetObj.getClass().getName() + "." + method.getName() + "]";
Debug.logError(errorInfo, module);
Debug.logError("[JdonFramework] method invoke IllegalAccessException: " + ex, module);
throw new Throwable("access method:" + method + " " + ex, ex);
} catch (Exception ex) {
String errorInfo = "Errors happened in your method:[" + targetObj.getClass().getName() + "." + method.getName() + "]";
Debug.logError(errorInfo, module);
Debug.logError("[JdonFramework] method invoke error: " + ex, module);
throw new Throwable(" method invoke error: " + ex);
}
}
/**
* if target service is ejb object, cache it, so this function can active
* stateful session bean.
*
* @param targetServiceFactory
* @param targetMetaDef
* @return
* @throws Exception
*/
public Object createTargetObject(TargetServiceFactory targetServiceFactory) {
Debug.logVerbose("[JdonFramework] now getTargetObject by visitor ", module);
Object targetObjRef = null;
try {
TargetMetaRequest targetMetaRequest = targetMetaRequestsHolder.getTargetMetaRequest();
TargetMetaDef targetMetaDef = targetMetaRequest.getTargetMetaDef();
if (targetMetaDef.isEJB()) { // cache the ejb object
ComponentVisitor cm = targetMetaRequest.getComponentVisitor();
targetMetaRequest.setVisitableName(ComponentKeys.TARGETSERVICE_FACTORY);
Debug.logVerbose(ComponentKeys.TARGETSERVICE_FACTORY + " in action (cache)", module);
targetObjRef = cm.visit();
} else {
Debug.logVerbose("[JdonFramework] not active targer service instance cache !!!!", module);
targetObjRef = targetServiceFactory.create();
}
} catch (Exception e) {
Debug.logError("[JdonFramework]createTargetObject error: " + e, module);
}
return targetObjRef;
}
}