/**
* Copyright (C) 2011 Brian Ferris <bdferris@onebusaway.org>
*
* 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.onebusaway.container.spring;
import org.onebusaway.utility.ObjectSerializationLibrary;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.config.AbstractFactoryBean;
import java.io.File;
import java.lang.reflect.Method;
/**
* A Spring {@link FactoryBean} for instantiating a serialized object from a
* File.
*
* @author bdferris
*/
public class SerializedFactoryBean extends AbstractFactoryBean<Object> {
private File _path;
private Class<?> _objectType;
private String _initMethod;
public void setPath(File path) {
_path = path;
}
public void setObjectType(Class<?> objectType) {
_objectType = objectType;
}
public void setInitMethod(String initMethod) {
_initMethod = initMethod;
}
@Override
public Class<?> getObjectType() {
return _objectType;
}
@Override
protected Object createInstance() throws Exception {
System.out.println("reading bean from file: " + _path);
Object obj = ObjectSerializationLibrary.readObject(_path);
if (_initMethod != null) {
Class<? extends Object> c = obj.getClass();
for (Method method : c.getMethods()) {
if (method.getName().equals(_initMethod))
if (method.getParameterTypes().length > 0) {
System.err.println("cannot call init method " + _initMethod
+ " on " + obj + " because method requires arguments");
} else {
method.invoke(obj);
}
}
}
System.out.println(" complete");
return obj;
}
}