/*
* Copyright (c) 2008, Rickard Öberg. 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.value;
import org.qi4j.api.association.AssociationStateHolder;
import org.qi4j.api.common.ConstructionException;
import org.qi4j.api.composite.Composite;
import org.qi4j.api.value.NoSuchValueException;
import org.qi4j.api.value.ValueBuilder;
import org.qi4j.runtime.structure.ModelModule;
import org.qi4j.runtime.structure.ModuleInstance;
import static org.qi4j.functional.Iterables.first;
/**
* Implementation of ValueBuilder
*/
public final class ValueBuilderInstance<T>
implements ValueBuilder<T>
{
private final ModuleInstance currentModule;
private final ValueInstance prototypeInstance;
public ValueBuilderInstance( ModelModule<ValueModel> compositeModelModule, ModuleInstance currentModule, ValueStateModel.StateResolver stateResolver )
{
ValueStateInstance state = new ValueStateInstance( compositeModelModule, currentModule, stateResolver );
prototypeInstance = compositeModelModule.model().newValueInstance( compositeModelModule.module(), state );
prototypeInstance.prepareToBuild();
this.currentModule = currentModule;
}
@Override
public T prototype()
{
return prototypeInstance.<T>proxy();
}
@Override
public AssociationStateHolder state()
{
return prototypeInstance.state();
}
@Override
public <K> K prototypeFor( Class<K> mixinType )
{
return prototypeInstance.newProxy( mixinType );
}
@Override
@SuppressWarnings( "unchecked" )
public T newInstance()
throws ConstructionException
{
Class<Composite> valueType = (Class<Composite>) first( prototypeInstance.types() );
ModelModule<ValueModel> valueModel = currentModule.typeLookup().lookupValueModel( valueType );
if( valueModel == null )
{
throw new NoSuchValueException( valueType.getName(), currentModule.name() );
}
return new ValueBuilderWithPrototype<>( valueModel, currentModule, prototype() ).newInstance();
}
}