Examples of org.springframework.webflow.execution.Action

Package org.springframework.webflow.execution

Examples of org.springframework.webflow.execution.Action

org.springframework.webflow.execution.Action
A command that executes a behavior and returns a logical execution result a calling flow execution can respond to.
Actions typically delegate down to the application (or service) layer to perform business operations. They often retrieve data to support response rendering. They act as a bridge between a SWF web-tier and your middle-tier business logic layer.
When an action completes execution it signals a result event describing the outcome of that execution (for example, "success", "error", "yes", "no", "tryAgain", etc). In addition to providing a logical outcome the flow can respond to, a result event may have payload associated with it, for example a "success" return value or an "error" error code. The result event is typically used as grounds for a state transition out of the current state of the calling Flow.
Action implementations are often application-scoped singletons instantiated and managed by a web-tier Spring application context to take advantage of Spring's externalized configuration and dependency injection capabilities (which is a form of Inversion of Control [IoC]). Actions may also be stateful prototypes, storing conversational state as instance variables. Action instance definitions may also be locally scoped to a specific flow definition (see use of the "import" element of the root XML flow definition element.)
Note: Actions are directly instantiatable for use in a standalone test environment and can be parameterized with mocks or stubs, as they are simple POJOs. Action proxies may also be generated at runtime for delegating to POJO business operations that have no dependency on the Spring Web Flow API.
Note: if an Action is a singleton managed in application scope, take care not to store and/or modify caller-specific state in a unsafe manner. The Action {@link #execute(RequestContext)} method runs in an independently executingthread on each invocation so make sure you deal only with local data or internal, thread-safe services.
Note: an Action is not a controller like a Spring MVC controller or a Struts action is a controller. Flow actions are commands. Such commands do not select views, they execute arbitrary behavioral logic and then return an logical execution result. The flow that invokes an Action is responsible for responding to the execution result to decide what to do next. In Spring Web Flow, the flow is the controller. @author Keith Donald @author Erwin Vervaet

    Flow flow = assembler.assembleFlow();
    context.registerSubflow(flow);
    Flow notManaged = new Flow("notmanaged");
    new EndState(notManaged, "finish");
    context.registerSubflow(notManaged);
    context.registerBean("loadTestBean", new Action() {
      public Event execute(RequestContext context) throws Exception {
        assertSessionBound();
        Session session = (Session) context.getFlowScope().get("persistenceContext");
        TestBean bean = (TestBean) session.get(TestBean.class, new Long(0));
        assertNotNull(bean);

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    Flow flow = assembler.assembleFlow();
    context.registerSubflow(flow);
    Flow notManaged = new Flow("notmanaged");
    new EndState(notManaged, "finish");
    context.registerSubflow(notManaged);
    context.registerBean("loadTestBean", new Action() {
      public Event execute(RequestContext context) throws Exception {
        assertSessionBound();
        EntityManager em = (EntityManager) context.getFlowScope().get("persistenceContext");
        TestBean bean = (TestBean) em.getReference(TestBean.class, new Integer(0));
        assertNotNull(bean);

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    EasyMock.verify(new Object[] { actionMock });
    assertEquals("Expecting success since no check is performed if null result,", "success", result.getId());
  }


  public void testMultipleActions() throws Exception {
    CompositeAction ca = new CompositeAction(new Action[] { new Action() {
      public Event execute(RequestContext context) throws Exception {
        return new Event(this, "foo");
      }
    }, new Action() {
      public Event execute(RequestContext context) throws Exception {
        return new Event(this, "bar");
      }
    } });
    assertEquals("Result of last executed action should be returned", "bar", ca.execute(new MockRequestContext())

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    }
  }


  public Object getValue(ELContext elContext, Object base, Object property) {
    if (base instanceof Action) {
      Action action = (Action) base;
      elContext.setPropertyResolved(true);
      AnnotatedAction annotated = new AnnotatedAction(action);
      annotated.setMethod(property.toString());
      return annotated;
    } else {

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    MutableAttributeMap attributes = parseMetaAttributes(state.getAttributes());
    if (StringUtils.hasText(state.getCommit())) {
      attributes.put("commit", fromStringTo(Boolean.class).execute(state.getCommit()));
    }
    parseAndPutSecured(state.getSecured(), attributes);
    Action finalResponseAction;
    ViewFactory viewFactory = parseViewFactory(state.getView(), state.getId(), true, null);
    if (viewFactory != null) {
      finalResponseAction = new ViewFactoryActionAdapter(viewFactory);
    } else {
      finalResponseAction = null;

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  private Action[] parseActions(List actionModels) {
    if (actionModels != null && !actionModels.isEmpty()) {
      List actions = new ArrayList(actionModels.size());
      for (Iterator it = actionModels.iterator(); it.hasNext();) {
        AbstractActionModel actionModel = (AbstractActionModel) it.next();
        Action action;
        if (actionModel instanceof EvaluateModel) {
          action = parseEvaluateAction((EvaluateModel) actionModel);
        } else if (actionModel instanceof RenderModel) {
          action = parseRenderAction((RenderModel) actionModel);
        } else if (actionModel instanceof SetModel) {

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  /**
   * Resolves multi action methods.
   */
  private static class ActionPropertyAccessor implements PropertyAccessor {
    public Object getProperty(Map context, Object target, Object name) throws OgnlException {
      Action action = (Action) target;
      AnnotatedAction annotated = new AnnotatedAction(action);
      annotated.setMethod(name.toString());
      return annotated;
    }

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  protected void doEnter(RequestControlContext context) throws FlowExecutionException {
    int executionCount = 0;
    String[] eventIds = new String[actionList.size()];
    Iterator it = actionList.iterator();
    while (it.hasNext()) {
      Action action = (Action) it.next();
      Event event = ActionExecutor.execute(action, context);
      if (event != null) {
        eventIds[executionCount] = event.getId();
        try {
          context.handleEvent(event);

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   * Returns the action in this list at the provided index, exposing it as an annotated action. This allows clients to
   * access specific properties about a target action instance if they exist.
   * @return the action, as an annotated action
   */
  public AnnotatedAction getAnnotated(int index) throws IndexOutOfBoundsException {
    Action action = get(index);
    if (action instanceof AnnotatedAction) {
      return (AnnotatedAction) action;
    } else {
      // wrap the action; no annotations will be available
      return new AnnotatedAction(action);

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    return new HibernateFlowExecutionListener(sessionFactory, tm);
  }


  @Override
  protected Action incrementCountAction() {
    return new Action() {
      public Event execute(RequestContext context) throws Exception {
        assertSessionBound();
        Session session = (Session) context.getFlowScope().get("persistenceContext");
        TestBean bean = (TestBean) session.get(TestBean.class, new Long(0));
        bean.incrementCount();

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org.springframework.webflow.action.CompositeActionTests

org.springframework.webflow.engine.ActionList

org.springframework.webflow.engine.ActionState

org.springframework.webflow.engine.builder.model.FlowModelFlowBuilder

org.springframework.webflow.expression.el.ActionMethodELResolver

org.springframework.webflow.expression.WebFlowOgnlExpressionParser$ActionPropertyAccessor

org.springframework.webflow.persistence.AbstractFlowManagedPersistenceIntegrationTests

org.springframework.webflow.persistence.HibernateFlowManagedPersistenceIntegrationTests

org.springframework.webflow.persistence.JpaFlowManagedPersistenceIntegrationTests

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