/**
 * Copyright 2006-2009 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 ext.test4j.objenesis.instantiator.basic;

import java.lang.reflect.Constructor;

import ext.test4j.objenesis.ObjenesisException;
import ext.test4j.objenesis.instantiator.ObjectInstantiator;

/**
 * Instantiates a class by grabbing the no args constructor and calling
 * Constructor.newInstance(). This can deal with default public constructors,
 * but that's about it.
 * 
 * @author Joe Walnes
 * @see ObjectInstantiator
 */
@SuppressWarnings({ "rawtypes", "unchecked" })
public class ConstructorInstantiator implements ObjectInstantiator {

	protected Constructor constructor;

	public ConstructorInstantiator(Class type) {
		try {
			constructor = type.getDeclaredConstructor((Class[]) null);
		} catch (Exception e) {
			throw new ObjenesisException(e);
		}
	}

	public Object newInstance() {
		try {
			return constructor.newInstance((Object[]) null);
		} catch (Exception e) {
			throw new ObjenesisException(e);
		}
	}

}