/**************************************************************
*
* 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 util;
import java.lang.reflect.Constructor;
public class DynamicClassLoader {
/**
* This method returns a class created by its name
* created by call to Class.forName()
.
* This method must be overloaded if another loading
* policy is required for Component and Interface
* testing classes.
* @param className The name of the class to create.
* @return The created class.
*/
public static Class forName(String className)
throws ClassNotFoundException {
return Class.forName(className) ;
}
/**
* Get an instance of a class. The empty constructor is used.
* @param className The class to instantiate.
* @return The instance of the class.
*/
public Object getInstance(String className)
throws IllegalArgumentException {
try {
Class cls = DynamicClassLoader.forName(className);
return cls.newInstance();
} catch ( ClassNotFoundException e ) {
throw new IllegalArgumentException("Couldn't find " + className
+ " " + e);
} catch ( IllegalAccessException e ) {
throw new IllegalArgumentException("Couldn't access " + className
+ " " + e);
} catch ( InstantiationException e ) {
throw new IllegalArgumentException("Couldn't instantiate " +
className + " " + e);
}
}
/**
* Get an instance of a class. The constructor matching to the
* arguments is used and the arguments are given to this constructor.
* @param className The class to instantiate.
* @param ctorArgs Arguments for the constructor.
* @return The instance of the class.
*/
public Object getInstance(String className, Object[] ctorArgs)
throws IllegalArgumentException {
Class[] ctorType = new Class[ctorArgs.length];
for(int i=0; i