001/* 002 * Copyright 2006-2010 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.batch.integration.step; 018 019import org.springframework.batch.core.Step; 020import org.springframework.batch.core.StepExecution; 021import org.springframework.batch.core.step.AbstractStep; 022import org.springframework.util.Assert; 023 024/** 025 * Provides a wrapper for an existing {@link Step}, delegating execution to it, 026 * but serving all other operations locally. 027 * 028 * @author Dave Syer 029 * 030 */ 031public class DelegateStep extends AbstractStep { 032 033 private Step delegate; 034 035 /** 036 * @param delegate the delegate to set 037 */ 038 public void setDelegate(Step delegate) { 039 this.delegate = delegate; 040 } 041 042 /** 043 * Check mandatory properties (delegate). 044 */ 045 @Override 046 public void afterPropertiesSet() throws Exception { 047 Assert.state(delegate!=null, "A delegate Step must be provided"); 048 super.afterPropertiesSet(); 049 } 050 051 @Override 052 protected void doExecute(StepExecution stepExecution) throws Exception { 053 delegate.execute(stepExecution); 054 } 055 056}