// Copyright 2008 Thiago H. de Paula Figueiredo

 //

 // 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 br.com.arsmachina.tapestrycrud.services.impl;

 import java.util.Collections;

 import java.util.Set;

 import org.apache.tapestry5.PrimaryKeyEncoder;

 import br.com.arsmachina.module.service.ModuleService;

 import br.com.arsmachina.tapestrycrud.encoder.ActivationContextEncoder;

 import br.com.arsmachina.tapestrycrud.encoder.Encoder;

 import br.com.arsmachina.tapestrycrud.encoder.LabelEncoder;

 import br.com.arsmachina.tapestrycrud.module.TapestryCrudModule;

 import br.com.arsmachina.tapestrycrud.services.TapestryCrudModuleService;

 /**

  * Default {@link ModuleService} implementation.

  * 

  * @author Thiago H. de Paula Figueiredo

  */

 public class TapestryCrudModuleServiceImpl implements TapestryCrudModuleService {

         final private Set<TapestryCrudModule> modules;

         /**

          * Single constructor of this class.

          * 

          * @param entityClasses a {@link Set} of {@link TapestryCrudModule}s. It cannot be null.

          */

         public TapestryCrudModuleServiceImpl(Set<TapestryCrudModule> modules) {

                 if (modules == null) {

                         throw new IllegalArgumentException("Parameter modules cannot be null");

                 }

                 this.modules = Collections.unmodifiableSet(modules);

         }

         public Set<TapestryCrudModule> getModules() {

                 return modules;

         }

         public <T> Class<? extends ActivationContextEncoder<T>> getActivationContextEncoderClass(

                         Class<T> entityClass) {

                 Class<? extends ActivationContextEncoder<T>> encoder = null;

                 for (TapestryCrudModule module : modules) {

                         encoder = module.getActivationContextEncoderClass(entityClass);

                         if (encoder != null) {

                                 break;

                         }

                 }

                 return encoder;

         }

         public <T> Class<? extends Encoder<T, ?>> getEncoderClass(

                         Class<T> entityClass) {

                 Class<? extends Encoder<T, ?>> encoder = null;

                 for (TapestryCrudModule module : modules) {

                         encoder = module.getEncoderClass(entityClass);

                         if (encoder != null) {

                                 break;

                         }

                 }

                 return encoder;

         }

         public <T> Class<? extends LabelEncoder<T>> getLabelEncoderClass(Class<T> entityClass) {

                 Class<? extends LabelEncoder<T>> encoder = null;

                 for (TapestryCrudModule module : modules) {

                         encoder = module.getLabelEncoderClass(entityClass);

                         if (encoder != null) {

                                 break;

                         }

                 }

                 return encoder;

         }

         public <T> Class<? extends PrimaryKeyEncoder<?, T>> getPrimaryKeyEncoderClass(

                         Class<T> entityClass) {

                 Class<? extends PrimaryKeyEncoder<?, T>> encoder = null;

                 for (TapestryCrudModule module : modules) {

                         encoder = module.getPrimaryKeyEncoderClass(entityClass);

                         if (encoder != null) {

                                 break;

                         }

                 }

                 return encoder;

         }

 }