/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* 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 org.seasar.framework.container.assembler;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Map;
import org.seasar.framework.beans.BeanDesc;
import org.seasar.framework.container.ComponentDef;
import org.seasar.framework.container.ComponentNotFoundRuntimeException;
import org.seasar.framework.container.IllegalMethodRuntimeException;
import org.seasar.framework.container.MethodAssembler;
import org.seasar.framework.container.MethodDef;
import org.seasar.framework.container.S2Container;
import org.seasar.framework.container.util.BindingUtil;
import org.seasar.framework.util.MethodUtil;
/**
* メソッドアセンブラの抽象クラスです。
*
* @author higa
*
*/
public abstract class AbstractMethodAssembler extends AbstractAssembler
implements MethodAssembler {
/**
* @param componentDef
*/
public AbstractMethodAssembler(ComponentDef componentDef) {
super(componentDef);
}
/**
* 定義されたメソッドを呼び出します。
*
* @param beanDesc
* @param component
* @param methodDef
* @throws IllegalMethodRuntimeException
* メソッド呼び出しで例外が発生した場合
*/
protected void invoke(BeanDesc beanDesc, Object component,
MethodDef methodDef) throws IllegalMethodRuntimeException {
Method method = methodDef.getMethod();
if (method != null) {
if (!Modifier.isPublic(method.getModifiers())
&& !method.isAccessible()) {
method.setAccessible(true);
}
try {
MethodUtil.invoke(method, component, methodDef.getArgs());
} catch (Exception cause) {
throw new IllegalMethodRuntimeException(
getComponentClass(component), method.getName(), cause);
}
return;
}
String methodName = methodDef.getMethodName();
if (methodName != null) {
Object[] args = null;
try {
if (methodDef.getArgDefSize() > 0) {
args = methodDef.getArgs();
} else {
Method[] methods = beanDesc.getMethods(methodName);
method = getSuitableMethod(methods);
if (method != null) {
args = getArgs(method.getParameterTypes());
}
}
} catch (ComponentNotFoundRuntimeException cause) {
throw new IllegalMethodRuntimeException(
getComponentClass(component), methodName, cause);
}
if (method != null) {
MethodUtil.invoke(method, component, args);
} else {
invoke(beanDesc, component, methodName, args);
}
return;
}
invokeExpression(component, methodDef);
}
private void invokeExpression(Object component, MethodDef methodDef) {
Map ctx = new HashMap();
ctx.put("self", component);
ctx.put("out", System.out);
ctx.put("err", System.err);
S2Container container = getComponentDef().getContainer();
methodDef.getExpression().evaluate(container, ctx);
}
private Method getSuitableMethod(Method[] methods) {
int argSize = -1;
Method method = null;
for (int i = 0; i < methods.length; ++i) {
int tempArgSize = methods[i].getParameterTypes().length;
if (tempArgSize > argSize
&& BindingUtil.isAutoBindable(methods[i]
.getParameterTypes())) {
method = methods[i];
argSize = tempArgSize;
}
}
return method;
}
private void invoke(BeanDesc beanDesc, Object component, String methodName,
Object[] args) throws IllegalMethodRuntimeException {
try {
beanDesc.invoke(component, methodName, args);
} catch (NumberFormatException ex) {
throw new IllegalMethodRuntimeException(getComponentDef()
.getComponentClass(), methodName, ex);
}
}
}