| /* |
| * 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.zest.runtime.unitofwork; |
| |
| import java.util.Stack; |
| import org.apache.zest.api.composite.TransientBuilderFactory; |
| import org.apache.zest.api.entity.EntityComposite; |
| import org.apache.zest.api.injection.scope.Structure; |
| import org.apache.zest.api.metrics.MetricsProvider; |
| import org.apache.zest.api.unitofwork.UnitOfWork; |
| import org.apache.zest.api.unitofwork.UnitOfWorkFactory; |
| import org.apache.zest.api.usecase.Usecase; |
| import org.apache.zest.runtime.entity.EntityInstance; |
| import org.apache.zest.spi.module.ModuleSpi; |
| |
| public class UnitOfWorkFactoryMixin |
| implements UnitOfWorkFactory |
| { |
| @Structure |
| private TransientBuilderFactory tbf; |
| |
| @Structure |
| private ModuleSpi module; |
| |
| // Implementation of UnitOfWorkFactory |
| @Override |
| public UnitOfWork newUnitOfWork() |
| { |
| return newUnitOfWork( Usecase.DEFAULT ); |
| } |
| |
| @Override |
| public UnitOfWork newUnitOfWork( long currentTime ) |
| { |
| return newUnitOfWork( Usecase.DEFAULT, currentTime ); |
| } |
| |
| @Override |
| public UnitOfWork newUnitOfWork( Usecase usecase ) |
| { |
| return newUnitOfWork( usecase == null ? Usecase.DEFAULT : usecase, System.currentTimeMillis() ); |
| } |
| |
| @Override |
| public UnitOfWork newUnitOfWork( Usecase usecase, long currentTime ) |
| { |
| UnitOfWorkInstance unitOfWorkInstance = new UnitOfWorkInstance( module, usecase, currentTime, metricsProvider() ); |
| return tbf.newTransient( UnitOfWork.class, unitOfWorkInstance ); |
| } |
| |
| private MetricsProvider metricsProvider() |
| { |
| return module.metricsProvider(); |
| } |
| |
| @Override |
| public boolean isUnitOfWorkActive() |
| { |
| Stack<UnitOfWorkInstance> stack = UnitOfWorkInstance.getCurrent(); |
| return !stack.isEmpty(); |
| } |
| |
| @Override |
| public UnitOfWork currentUnitOfWork() |
| { |
| Stack<UnitOfWorkInstance> stack = UnitOfWorkInstance.getCurrent(); |
| if( stack.size() == 0 ) |
| { |
| throw new IllegalStateException( "No current UnitOfWork active" ); |
| } |
| return tbf.newTransient( UnitOfWork.class, stack.peek() ); |
| } |
| |
| @Override |
| public UnitOfWork getUnitOfWork( EntityComposite entity ) |
| { |
| EntityInstance instance = EntityInstance.entityInstanceOf( entity ); |
| return instance.unitOfWork(); |
| } |
| } |