/*
    * Copyright 2006-2013 the original author or authors.
    *
    * 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.springframework.batch.core.job.flow.support.state;
  
  import java.util.Collection;
  import java.util.Collections;
  
  import org.springframework.batch.core.job.flow.Flow;
  import org.springframework.batch.core.job.flow.FlowExecutionStatus;
  import org.springframework.batch.core.job.flow.FlowExecutor;
  import org.springframework.batch.core.job.flow.FlowHolder;
  
  /**
   * State that delegates to a Flow
   *
   * @author Dave Syer
   * @since 2.0
   */
  public class FlowState extends AbstractState implements FlowHolder {
  
  	private final Flow flow;
  
  	/**
  	 * @param name
  	 */
  	public FlowState(Flow flow, String name) {
  		super(name);
  		this.flow = flow;
  	}
  
  	/**
  	 * @return the flows
  	 */
  	@Override
  	public Collection<Flow> getFlows() {
  		return Collections.singleton(flow);
  	}
  
  	@Override
  	public FlowExecutionStatus handle(FlowExecutor executor) throws Exception {
  		return flow.start(executor).getStatus();
  	}
  
  	/* (non-Javadoc)
  	 * @see org.springframework.batch.core.job.flow.State#isEndState()
  	 */
  	@Override
  	public boolean isEndState() {
  		return false;
  	}
  
  }