| /* |
| * Copyright (c) 2009, 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.spi.entitystore; |
| |
| import java.util.HashMap; |
| import org.apache.zest.api.entity.EntityDescriptor; |
| import org.apache.zest.api.entity.EntityReference; |
| import org.apache.zest.api.usecase.Usecase; |
| import org.apache.zest.spi.entity.EntityState; |
| import org.apache.zest.spi.module.ModuleSpi; |
| |
| /** |
| * Default EntityStore UnitOfWork. |
| */ |
| public final class DefaultEntityStoreUnitOfWork |
| implements EntityStoreUnitOfWork |
| { |
| private EntityStoreSPI entityStoreSPI; |
| private String identity; |
| private HashMap<EntityReference, EntityState> states = new HashMap<>(); |
| private Usecase usecase; |
| private long currentTime; |
| |
| public DefaultEntityStoreUnitOfWork( EntityStoreSPI entityStoreSPI, |
| String identity, |
| Usecase usecase, |
| long currentTime |
| ) |
| { |
| this.entityStoreSPI = entityStoreSPI; |
| this.identity = identity; |
| this.usecase = usecase; |
| this.currentTime = currentTime; |
| } |
| |
| @Override |
| public String identity() |
| { |
| return identity; |
| } |
| |
| @Override |
| public long currentTime() |
| { |
| return currentTime; |
| } |
| |
| public Usecase usecase() |
| { |
| return usecase; |
| } |
| |
| // EntityStore |
| |
| @Override |
| public EntityState newEntityState( ModuleSpi module, EntityReference anIdentity, EntityDescriptor descriptor ) |
| throws EntityStoreException |
| { |
| EntityState entityState = states.get( anIdentity ); |
| if( entityState != null ) |
| { |
| throw new EntityAlreadyExistsException( anIdentity ); |
| } |
| EntityState state = entityStoreSPI.newEntityState( this, module, anIdentity, descriptor ); |
| states.put( anIdentity, state ); |
| return state; |
| } |
| |
| @Override |
| public EntityState entityStateOf( ModuleSpi module, EntityReference anIdentity ) |
| throws EntityNotFoundException |
| { |
| |
| EntityState entityState = states.get( anIdentity ); |
| if( entityState != null ) |
| { |
| return entityState; |
| } |
| entityState = entityStoreSPI.entityStateOf( this, module, anIdentity ); |
| states.put( anIdentity, entityState ); |
| return entityState; |
| } |
| |
| @Override |
| public StateCommitter applyChanges() |
| throws EntityStoreException |
| { |
| return entityStoreSPI.applyChanges( this, states.values() ); |
| } |
| |
| @Override |
| public void discard() |
| { |
| } |
| } |