| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.deltaspike.data.impl.meta; |
| |
| import java.io.Serializable; |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| import javax.enterprise.context.ApplicationScoped; |
| import org.apache.deltaspike.data.api.Repository; |
| import org.apache.deltaspike.data.impl.util.EntityUtils; |
| |
| @ApplicationScoped |
| public class EntityMetadataInitializer |
| { |
| private static final Logger LOG = Logger.getLogger(EntityMetadataInitializer.class.getName()); |
| |
| public EntityMetadata init(RepositoryMetadata metadata) |
| { |
| EntityMetadata entityMetadata = extract(metadata.getRepositoryClass()); |
| |
| entityMetadata.setPrimaryKeyProperty(EntityUtils.primaryKeyProperty(entityMetadata.getEntityClass())); |
| entityMetadata.setVersionProperty(EntityUtils.getVersionProperty(entityMetadata.getEntityClass())); |
| entityMetadata.setEntityName(EntityUtils.entityName(entityMetadata.getEntityClass())); |
| |
| return entityMetadata; |
| } |
| |
| private EntityMetadata extract(Class<?> repositoryClass) |
| { |
| // get from annotation |
| Repository repository = repositoryClass.getAnnotation(Repository.class); |
| Class<?> entityClass = repository.forEntity(); |
| boolean isEntityClass = !Object.class.equals(entityClass) && EntityUtils.isEntityClass(entityClass); |
| if (isEntityClass) |
| { |
| return new EntityMetadata(entityClass, EntityUtils.primaryKeyClass(entityClass)); |
| } |
| |
| // get from type |
| for (Type inf : repositoryClass.getGenericInterfaces()) |
| { |
| EntityMetadata result = extractFromType(inf); |
| if (result != null) |
| { |
| return result; |
| } |
| } |
| |
| EntityMetadata entityMetadata = extractFromType(repositoryClass.getGenericSuperclass()); |
| if (entityMetadata != null) |
| { |
| return entityMetadata; |
| } |
| for (Type intf : repositoryClass.getGenericInterfaces()) |
| { |
| entityMetadata = extract( (Class< ? >)intf ); |
| if (entityMetadata != null) |
| { |
| return entityMetadata; |
| } |
| } |
| if (repositoryClass.getSuperclass() != null) |
| { |
| return extract(repositoryClass.getSuperclass()); |
| } |
| return null; |
| } |
| |
| private EntityMetadata extractFromType(Type type) |
| { |
| LOG.log(Level.FINER, "extractFrom: type = {0}", type); |
| |
| if (!(type instanceof ParameterizedType)) |
| { |
| return null; |
| } |
| |
| ParameterizedType parametrizedType = (ParameterizedType) type; |
| Type[] genericTypes = parametrizedType.getActualTypeArguments(); |
| |
| EntityMetadata result = null; |
| |
| // don't use a foreach here, we must be sure that the we first get the entity type |
| for (Type genericType : genericTypes) |
| { |
| if (genericType instanceof Class && EntityUtils.isEntityClass((Class<?>) genericType)) |
| { |
| result = new EntityMetadata((Class<?>) genericType); |
| continue; |
| } |
| |
| if (result != null && genericType instanceof Class) |
| { |
| result.setPrimaryKeyClass((Class<? extends Serializable>) genericType); |
| return result; |
| } |
| } |
| return result; |
| } |
| } |