/*
* Copyright 2014 Daniel Bechler
*
* 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 de.danielbechler.diff.introspection;
import de.danielbechler.diff.instantiation.InstanceFactory;
import de.danielbechler.diff.instantiation.PublicNoArgsConstructorInstanceFactory;
import de.danielbechler.util.Assert;
class InstanceFactoryFallbackDecorator implements InstanceFactory
{
private final InstanceFactory fallbackInstanceFactory = new PublicNoArgsConstructorInstanceFactory();
private final InstanceFactory instanceFactory;
InstanceFactoryFallbackDecorator(final InstanceFactory instanceFactory)
{
Assert.notNull(instanceFactory, "instanceFactory");
this.instanceFactory = instanceFactory;
}
public Object newInstanceOfType(final Class<?> type)
{
final Object instance = instanceFactory.newInstanceOfType(type);
if (instance != null)
{
return instance;
}
else
{
return fallbackInstanceFactory.newInstanceOfType(type);
}
}
}