/**
* Copyright 2006-2013 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 org.objenesis.instantiator.gcj;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.lang.reflect.Method;
import org.objenesis.ObjenesisException;
import org.objenesis.instantiator.ObjectInstantiator;
/**
* Base class for GCJ-based instantiators. It initializes reflection access to method
* ObjectInputStream.newObject, as well as creating a dummy ObjectInputStream to be used as the
* "this" argument for the method.
*
* @author Leonardo Mesquita
*/
public abstract class GCJInstantiatorBase<T> implements ObjectInstantiator<T> {
static Method newObjectMethod = null;
static ObjectInputStream dummyStream;
private static class DummyStream extends ObjectInputStream {
public DummyStream() throws IOException {
}
}
private static void initialize() {
if(newObjectMethod == null) {
try {
newObjectMethod = ObjectInputStream.class.getDeclaredMethod("newObject", new Class[] {
Class.class, Class.class});
newObjectMethod.setAccessible(true);
dummyStream = new DummyStream();
}
catch(RuntimeException e) {
throw new ObjenesisException(e);
}
catch(NoSuchMethodException e) {
throw new ObjenesisException(e);
}
catch(IOException e) {
throw new ObjenesisException(e);
}
}
}
protected final Class<T> type;
public GCJInstantiatorBase(Class<T> type) {
this.type = type;
initialize();
}
public abstract T newInstance();
}