/*
* Copyright (c) 2007, Rickard Öberg. All Rights Reserved.
* Copyright (c) 2008, Edward Yakop. All Rights Reserved.
*
* 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.qi4j.runtime.entity;
import org.qi4j.runtime.property.PropertyInfo;
import org.qi4j.runtime.property.PropertyInstance;
import org.qi4j.spi.entity.EntityState;
/**
* {@code EntityPropertyInstance} represents a property whose value must be backed by an EntityState.
*/
public class EntityPropertyInstance<T>
extends PropertyInstance<T>
{
private EntityState entityState;
/**
* Construct an instance of {@code PropertyInstance} with the specified arguments.
*
* @param aPropertyInfo The property info. This argument must not be {@code null}.
* @param entityState
*/
public EntityPropertyInstance( PropertyInfo aPropertyInfo, EntityState entityState )
{
super( aPropertyInfo, (T) entityState.propertyValueOf( aPropertyInfo.qualifiedName() ) );
this.entityState = entityState;
}
/**
* Sets this property value.
*
* @param aNewValue The new value.
*/
@Override
public void set( T aNewValue )
{
super.set( aNewValue );
entityState.setPropertyValue( model.qualifiedName(), aNewValue );
}
}