| 1 | /* |
| 2 | * Copyright 2006-2007 the original author or authors. |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package org.springframework.batch.core.job.flow.support.state; |
| 18 | |
| 19 | import org.springframework.batch.core.Step; |
| 20 | import org.springframework.batch.core.job.flow.FlowExecutionStatus; |
| 21 | import org.springframework.batch.core.job.flow.FlowExecutor; |
| 22 | import org.springframework.batch.core.job.flow.State; |
| 23 | import org.springframework.batch.core.step.StepHolder; |
| 24 | |
| 25 | /** |
| 26 | * {@link State} implementation that delegates to a {@link FlowExecutor} to |
| 27 | * execute the specified {@link Step}. |
| 28 | * |
| 29 | * @author Dave Syer |
| 30 | * @since 2.0 |
| 31 | */ |
| 32 | public class StepState extends AbstractState implements StepHolder { |
| 33 | |
| 34 | private final Step step; |
| 35 | |
| 36 | /** |
| 37 | * @param step the step that will be executed |
| 38 | */ |
| 39 | public StepState(Step step) { |
| 40 | super(step.getName()); |
| 41 | this.step = step; |
| 42 | } |
| 43 | |
| 44 | /** |
| 45 | * @param name for the step that will be executed |
| 46 | * @param step the step that will be executed |
| 47 | */ |
| 48 | public StepState(String name, Step step) { |
| 49 | super(name); |
| 50 | this.step = step; |
| 51 | } |
| 52 | |
| 53 | @Override |
| 54 | public FlowExecutionStatus handle(FlowExecutor executor) throws Exception { |
| 55 | /* |
| 56 | * On starting a new step, possibly upgrade the last execution to make |
| 57 | * sure it is abandoned on restart if it failed. |
| 58 | */ |
| 59 | executor.abandonStepExecution(); |
| 60 | return new FlowExecutionStatus(executor.executeStep(step)); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * @return the step |
| 65 | */ |
| 66 | public Step getStep() { |
| 67 | return step; |
| 68 | } |
| 69 | |
| 70 | /* (non-Javadoc) |
| 71 | * @see org.springframework.batch.core.job.flow.State#isEndState() |
| 72 | */ |
| 73 | public boolean isEndState() { |
| 74 | return false; |
| 75 | } |
| 76 | |
| 77 | } |