| /* |
| * 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.composite.StateResolver; |
| import org.qi4j.spi.module.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, 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(); |
| } |
| |
| } |