1 /*
2 * Copyright 2006-2013 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 @Override
67 public Step getStep() {
68 return step;
69 }
70
71 /* (non-Javadoc)
72 * @see org.springframework.batch.core.job.flow.State#isEndState()
73 */
74 @Override
75 public boolean isEndState() {
76 return false;
77 }
78
79 }