| /* |
| * Copyright (c) 2008, Edward Yakop. All Rights Reserved. |
| * Copyright (c) 2014-2015, Paul Merlin. 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.tools.model.descriptor; |
| |
| import java.util.LinkedList; |
| import java.util.List; |
| import org.apache.zest.api.common.Visibility; |
| import org.apache.zest.api.service.ServiceDescriptor; |
| import org.apache.zest.functional.HierarchicalVisitor; |
| import org.apache.zest.functional.VisitableHierarchy; |
| |
| import static org.apache.zest.api.util.NullArgumentException.validateNotNull; |
| |
| /** |
| * Service Detail Descriptor. |
| * <p> |
| * Visitable hierarchy with Activators children. |
| */ |
| public final class ServiceDetailDescriptor |
| extends CompositeDetailDescriptor<ServiceDescriptor> |
| implements ActivateeDetailDescriptor, VisitableHierarchy<Object, Object> |
| { |
| private final List<ActivatorDetailDescriptor> activators = new LinkedList<>(); |
| |
| ServiceDetailDescriptor( ServiceDescriptor descriptor ) |
| { |
| super( descriptor ); |
| } |
| |
| /** |
| * @return layers that can access this service. Never return {@code null}. |
| */ |
| public final List<LayerDetailDescriptor> accessibleToLayers() |
| { |
| Visibility visibility = descriptor.visibility(); |
| if( visibility == Visibility.module ) |
| { |
| return new LinkedList<>(); |
| } |
| |
| LayerDetailDescriptor layer = module.layer(); |
| if( visibility == Visibility.layer ) |
| { |
| List<LayerDetailDescriptor> layers = new LinkedList<>(); |
| layers.add( layer ); |
| return layers; |
| } |
| else |
| { |
| return layer.usedBy(); |
| } |
| } |
| |
| @Override |
| public Iterable<ActivatorDetailDescriptor> activators() |
| { |
| return activators; |
| } |
| |
| final void addActivator( ActivatorDetailDescriptor descriptor ) |
| { |
| validateNotNull( "ActivatorDetailDescriptor", descriptor ); |
| descriptor.setService( this ); |
| activators.add( descriptor ); |
| } |
| |
| @Override |
| public <ThrowableType extends Throwable> boolean accept( HierarchicalVisitor<? super Object, ? super Object, ThrowableType> visitor ) |
| throws ThrowableType |
| { |
| if( visitor.visitEnter( this ) ) |
| { |
| for( ActivatorDetailDescriptor activator : activators ) |
| { |
| if( !activator.accept( visitor ) ) |
| { |
| break; |
| } |
| } |
| } |
| return visitor.visitLeave( this ); |
| } |
| } |