| /* |
| * 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.apache.zest.runtime.composite; |
| |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.Method; |
| import java.util.Collections; |
| import java.util.List; |
| import org.apache.zest.api.concern.ConcernsDescriptor; |
| import org.apache.zest.functional.HierarchicalVisitor; |
| import org.apache.zest.functional.Iterables; |
| import org.apache.zest.functional.VisitableHierarchy; |
| import org.apache.zest.runtime.injection.Dependencies; |
| import org.apache.zest.runtime.injection.DependencyModel; |
| import org.apache.zest.spi.module.ModuleSpi; |
| |
| /** |
| * JAVADOC |
| */ |
| public final class ConcernsModel |
| implements ConcernsDescriptor, Dependencies, VisitableHierarchy<Object, Object> |
| { |
| public static final ConcernsModel EMPTY_CONCERNS = new ConcernsModel( Collections.<ConcernModel>emptyList() ); |
| |
| private List<ConcernModel> concernsFor; |
| |
| public ConcernsModel( List<ConcernModel> concernsFor ) |
| { |
| this.concernsFor = concernsFor; |
| } |
| |
| @Override |
| public Iterable<DependencyModel> dependencies() |
| { |
| return Iterables.flattenIterables( Iterables.map( Dependencies.DEPENDENCIES_FUNCTION, concernsFor ) ); |
| } |
| |
| // Context |
| public ConcernsInstance newInstance( Method method, ModuleSpi moduleInstance, |
| FragmentInvocationHandler mixinInvocationHandler |
| ) |
| { |
| ProxyReferenceInvocationHandler proxyHandler = new ProxyReferenceInvocationHandler(); |
| InvocationHandler nextConcern = mixinInvocationHandler; |
| for( int i = concernsFor.size() - 1; i >= 0; i-- ) |
| { |
| ConcernModel concernModel = concernsFor.get( i ); |
| |
| nextConcern = concernModel.newInstance( moduleInstance, nextConcern, proxyHandler, method ); |
| } |
| |
| return new ConcernsInstance( nextConcern, mixinInvocationHandler, proxyHandler ); |
| } |
| |
| @Override |
| public <ThrowableType extends Throwable> boolean accept( HierarchicalVisitor<? super Object, ? super Object, ThrowableType> modelVisitor ) |
| throws ThrowableType |
| { |
| if( modelVisitor.visitEnter( this ) ) |
| { |
| for( ConcernModel concernModel : concernsFor ) |
| { |
| if( !concernModel.accept( modelVisitor ) ) |
| { |
| break; |
| } |
| } |
| } |
| return modelVisitor.visitLeave( this ); |
| } |
| } |