Examples of org.springframework.batch.core.job.flow.support.SimpleFlow

Package org.springframework.batch.core.job.flow.support

Examples of org.springframework.batch.core.job.flow.support.SimpleFlow

org.springframework.batch.core.job.flow.support.SimpleFlow
A {@link Flow} that branches conditionally depending on the exit status ofthe last {@link State}. The input parameters are the state transitions (in no particular order). The start state name can be specified explicitly (and must exist in the set of transitions), or computed from the existing transitions, if unambiguous. @author Dave Syer @author Michael Minella @since 2.0

    assertEquals(JobInterruptedException.class, jobExecution.getFailureExceptions().get(0).getClass());
  }


  @Test
  public void testInterruptedSplitException() throws Exception {
    SimpleFlow flow = new SimpleFlow("job");
    SimpleFlow flow1 = new SimpleFlow("flow1");
    SimpleFlow flow2 = new SimpleFlow("flow2");


    List<StateTransition> transitions = new ArrayList<StateTransition>();
    transitions.add(StateTransition.createStateTransition(new StepState(new StubStep("step1") {
      @Override
      public void execute(StepExecution stepExecution) throws JobInterruptedException {
        throw new JobInterruptedException("Stopped");
      }
    }), "end0"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end0")));
    flow1.setStateTransitions(new ArrayList<StateTransition>(transitions));
    flow1.afterPropertiesSet();
    flow2.setStateTransitions(new ArrayList<StateTransition>(transitions));
    flow2.afterPropertiesSet();


    transitions = new ArrayList<StateTransition>();
    transitions.add(StateTransition.createStateTransition(new SplitState(Arrays.<Flow> asList(flow1, flow2),
        "split"), "end0"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end0")));

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    assertEquals(JobInterruptedException.class, jobExecution.getFailureExceptions().get(0).getClass());
  }


  @Test
  public void testEndStateStopped() throws Exception {
    SimpleFlow flow = new SimpleFlow("job");
    List<StateTransition> transitions = new ArrayList<StateTransition>();
    transitions.add(StateTransition.createStateTransition(new StepState(new StubStep("step1")), "end"));
    transitions.add(StateTransition
        .createStateTransition(new EndState(FlowExecutionStatus.STOPPED, "end"), "step2"));
    StepState step2 = new StepState(new StubStep("step2"));
    transitions.add(StateTransition.createStateTransition(step2, ExitStatus.FAILED.getExitCode(), "end0"));
    transitions.add(StateTransition.createStateTransition(step2, ExitStatus.COMPLETED.getExitCode(), "end1"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.FAILED, "end0")));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end1")));
    flow.setStateTransitions(transitions);
    job.setFlow(flow);
    job.afterPropertiesSet();
    job.doExecute(jobExecution);
    assertEquals(1, jobExecution.getStepExecutions().size());
    assertEquals(BatchStatus.STOPPED, jobExecution.getStatus());

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    assertEquals(1, jobExecution.getStepExecutions().size());
    assertEquals(BatchStatus.STOPPED, jobExecution.getStatus());
  }


  public void testEndStateFailed() throws Exception {
    SimpleFlow flow = new SimpleFlow("job");
    List<StateTransition> transitions = new ArrayList<StateTransition>();
    transitions.add(StateTransition.createStateTransition(new StepState(new StubStep("step1")), "end"));
    transitions
    .add(StateTransition.createStateTransition(new EndState(FlowExecutionStatus.FAILED, "end"), "step2"));
    transitions.add(StateTransition.createStateTransition(new StepState(new StubStep("step2")), ExitStatus.FAILED
        .getExitCode(), "end0"));
    transitions.add(StateTransition.createStateTransition(new StepState(new StubStep("step2")),
        ExitStatus.COMPLETED.getExitCode(), "end1"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.FAILED, "end0")));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end1")));
    flow.setStateTransitions(transitions);
    job.setFlow(flow);
    job.afterPropertiesSet();
    job.doExecute(jobExecution);
    assertEquals(BatchStatus.FAILED, jobExecution.getStatus());
    assertEquals(1, jobExecution.getStepExecutions().size());

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    assertEquals(1, jobExecution.getStepExecutions().size());
  }


  @Test
  public void testEndStateStoppedWithRestart() throws Exception {
    SimpleFlow flow = new SimpleFlow("job");
    List<StateTransition> transitions = new ArrayList<StateTransition>();
    transitions.add(StateTransition.createStateTransition(new StepState(new StubStep("step1")), "end"));
    transitions.add(StateTransition
        .createStateTransition(new EndState(FlowExecutionStatus.STOPPED, "end"), "step2"));
    StepState step2 = new StepState(new StubStep("step2"));
    transitions.add(StateTransition.createStateTransition(step2, ExitStatus.COMPLETED.getExitCode(), "end0"));
    transitions.add(StateTransition.createStateTransition(step2, ExitStatus.FAILED.getExitCode(), "end1"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end0")));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.FAILED, "end1")));
    flow.setStateTransitions(transitions);
    job.setFlow(flow);
    job.afterPropertiesSet();


    // To test a restart we have to use the AbstractJob.execute()...
    job.execute(jobExecution);

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  }


  @Test
  public void testBranching() throws Exception {
    SimpleFlow flow = new SimpleFlow("job");
    List<StateTransition> transitions = new ArrayList<StateTransition>();
    StepState step1 = new StepState(new StubStep("step1"));
    transitions.add(StateTransition.createStateTransition(step1, "step2"));
    transitions.add(StateTransition.createStateTransition(step1, "COMPLETED", "step3"));
    StepState step2 = new StepState(new StubStep("step2"));
    transitions.add(StateTransition.createStateTransition(step2, ExitStatus.COMPLETED.getExitCode(), "end0"));
    transitions.add(StateTransition.createStateTransition(step2, ExitStatus.FAILED.getExitCode(), "end1"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end0")));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.FAILED, "end1")));
    StepState step3 = new StepState(new StubStep("step3"));
    transitions.add(StateTransition.createStateTransition(step3, ExitStatus.FAILED.getExitCode(), "end2"));
    transitions.add(StateTransition.createStateTransition(step3, ExitStatus.COMPLETED.getExitCode(), "end3"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.FAILED, "end2")));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end3")));
    flow.setStateTransitions(transitions);
    flow.setStateTransitionComparator(new DefaultStateTransitionComparator());
    job.setFlow(flow);
    job.afterPropertiesSet();
    job.doExecute(jobExecution);
    StepExecution stepExecution = getStepExecution(jobExecution, "step3");
    assertEquals(ExitStatus.COMPLETED, stepExecution.getExitStatus());

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    assertEquals(2, jobExecution.getStepExecutions().size());
  }


  @Test
  public void testBasicFlow() throws Throwable {
    SimpleFlow flow = new SimpleFlow("job");
    List<StateTransition> transitions = new ArrayList<StateTransition>();
    transitions.add(StateTransition.createStateTransition(new StepState(new StubStep("step")), "end0"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end0")));
    flow.setStateTransitions(transitions);
    job.setFlow(flow);
    job.execute(jobExecution);
    if (!jobExecution.getAllFailureExceptions().isEmpty()) {
      throw jobExecution.getAllFailureExceptions().get(0);
    }

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  }


  @Test
  public void testDecisionFlow() throws Throwable {


    SimpleFlow flow = new SimpleFlow("job");
    JobExecutionDecider decider = new JobExecutionDecider() {
      @Override
      public FlowExecutionStatus decide(JobExecution jobExecution, StepExecution stepExecution) {
        assertNotNull(stepExecution);
        return new FlowExecutionStatus("SWITCH");
      }
    };


    List<StateTransition> transitions = new ArrayList<StateTransition>();
    transitions.add(StateTransition.createStateTransition(new StepState(new StubStep("step1")), "decision"));
    DecisionState decision = new DecisionState(decider, "decision");
    transitions.add(StateTransition.createStateTransition(decision, "step2"));
    transitions.add(StateTransition.createStateTransition(decision, "SWITCH", "step3"));
    StepState step2 = new StepState(new StubStep("step2"));
    transitions.add(StateTransition.createStateTransition(step2, ExitStatus.COMPLETED.getExitCode(), "end0"));
    transitions.add(StateTransition.createStateTransition(step2, ExitStatus.FAILED.getExitCode(), "end1"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end0")));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.FAILED, "end1")));
    StepState step3 = new StepState(new StubStep("step3"));
    transitions.add(StateTransition.createStateTransition(step3, ExitStatus.FAILED.getExitCode(), "end2"));
    transitions.add(StateTransition.createStateTransition(step3, ExitStatus.COMPLETED.getExitCode(), "end3"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.FAILED, "end2")));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end3")));
    flow.setStateTransitions(transitions);
    flow.setStateTransitionComparator(new DefaultStateTransitionComparator());


    job.setFlow(flow);
    job.doExecute(jobExecution);
    StepExecution stepExecution = getStepExecution(jobExecution, "step3");
    if (!jobExecution.getAllFailureExceptions().isEmpty()) {

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  }


  @Test
  public void testDecisionFlowWithExceptionInDecider() throws Throwable {


    SimpleFlow flow = new SimpleFlow("job");
    JobExecutionDecider decider = new JobExecutionDecider() {
      @Override
      public FlowExecutionStatus decide(JobExecution jobExecution, StepExecution stepExecution) {
        assertNotNull(stepExecution);
        throw new RuntimeException("Foo");
      }
    };


    List<StateTransition> transitions = new ArrayList<StateTransition>();
    transitions.add(StateTransition.createStateTransition(new StepState(new StubStep("step1")), "decision"));
    DecisionState decision = new DecisionState(decider, "decision");
    transitions.add(StateTransition.createStateTransition(decision, "step2"));
    transitions.add(StateTransition.createStateTransition(decision, "SWITCH", "step3"));
    StepState step2 = new StepState(new StubStep("step2"));
    transitions.add(StateTransition.createStateTransition(step2, ExitStatus.COMPLETED.getExitCode(), "end0"));
    transitions.add(StateTransition.createStateTransition(step2, ExitStatus.FAILED.getExitCode(), "end1"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end0")));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.FAILED, "end1")));
    StepState step3 = new StepState(new StubStep("step3"));
    transitions.add(StateTransition.createStateTransition(step3, ExitStatus.FAILED.getExitCode(), "end2"));
    transitions.add(StateTransition.createStateTransition(step3, ExitStatus.COMPLETED.getExitCode(), "end3"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.FAILED, "end2")));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end3")));
    flow.setStateTransitions(transitions);


    job.setFlow(flow);
    try {
      job.execute(jobExecution);
    }

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    }
  }


  @Test
  public void testGetStepExists() throws Exception {
    SimpleFlow flow = new SimpleFlow("job");
    List<StateTransition> transitions = new ArrayList<StateTransition>();
    transitions.add(StateTransition.createStateTransition(new StepState(new StubStep("step1")), "step2"));
    transitions.add(StateTransition.createStateTransition(new StepState(new StubStep("step2")), "end0"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end0")));
    flow.setStateTransitions(transitions);
    flow.afterPropertiesSet();
    job.setFlow(flow);
    job.afterPropertiesSet();


    Step step = job.getStep("step2");
    assertNotNull(step);

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    assertEquals("step2", step.getName());
  }


  @Test
  public void testGetPartitionedStep() throws Exception {
    SimpleFlow flow = new SimpleFlow("job");
    List<StateTransition> transitions = new ArrayList<StateTransition>();
    PartitionStep step = new PartitionStep();
    step.setName("step1");
    JsrPartitionHandler partitionHandler = new JsrPartitionHandler();
    partitionHandler.setPropertyContext(new BatchPropertyContext());
    partitionHandler.setPartitions(3);
    partitionHandler.setJobRepository(jobRepository);
    partitionHandler.setStep(new StubStep("subStep"));
    partitionHandler.afterPropertiesSet();
    step.setPartitionHandler(partitionHandler);
    step.setStepExecutionSplitter(new JsrStepExecutionSplitter(jobRepository, false, "step1", true));
    step.setJobRepository(jobRepository);
    step.afterPropertiesSet();
    transitions.add(StateTransition.createStateTransition(new StepState("job.step", step), "end0"));
    transitions.add(StateTransition.createEndStateTransition(new EndState(FlowExecutionStatus.COMPLETED, "end0")));
    flow.setStateTransitions(transitions);
    flow.afterPropertiesSet();
    job.setFlow(flow);
    job.afterPropertiesSet();


    job.execute(jobRepository.createJobExecution("partitionJob", new JobParameters()));

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