How to use

addVariable

method

in

org.springframework.webflow.engine.ViewState

/**
 * Adds a set of view variables.
 * @param variables the variables
 */
public void addVariables(ViewVariable... variables) {
  for (ViewVariable variable : variables) {
    addVariable(variable);
  }
}

/**
 * Adds a set of view variables.
 * @param variables the variables
 */
public void addVariables(ViewVariable... variables) {
  for (ViewVariable variable : variables) {
    addVariable(variable);
  }
}

/**
 * Adds a set of view variables.
 * @param variables the variables
 */
public void addVariables(ViewVariable[] variables) {
  for (int i = 0; i < variables.length; i++) {
    addVariable(variables[i]);
  }
}

public void testResumeViewStateRestoreVariables() {
  Flow flow = new Flow("myFlow");
  StubViewFactory viewFactory = new StubViewFactory();
  ViewState state = new ViewState(flow, "viewState", viewFactory);
  state.addVariable(new ViewVariable("foo", new VariableValueFactory() {
    public Object createInitialValue(RequestContext context) {
      return new TestBean();
    }
    public void restoreReferences(Object value, RequestContext context) {
      ((TestBean) value).datum1 = "Restored";
    }
  }));
  MockRequestControlContext context = new MockRequestControlContext(flow);
  state.enter(context);
  context = new MockRequestControlContext(context.getFlowExecutionContext());
  state.resume(context);
  assertTrue("Render not called", context.getFlowScope().contains("renderCalled"));
  assertFalse(context.getMockExternalContext().getFlowExecutionRedirectRequested());
  assertEquals("Restored", ((TestBean) context.getViewScope().get("foo")).datum1);
}

public void testEnterViewStateWithVariables() {
  Flow flow = new Flow("myFlow");
  StubViewFactory viewFactory = new StubViewFactory();
  ViewState state = new ViewState(flow, "viewState", viewFactory);
  state.addVariable(new ViewVariable("foo", new VariableValueFactory() {
    public Object createInitialValue(RequestContext context) {
      return "bar";
    }
    public void restoreReferences(Object value, RequestContext context) {
    }
  }));
  MockRequestControlContext context = new MockRequestControlContext(flow);
  state.enter(context);
  assertEquals("bar", context.getViewScope().getString("foo"));
  assertTrue("Render not called", context.getFlowScope().contains("renderCalled"));
  assertTrue(context.getExternalContext().isResponseComplete());
  assertFalse(context.getMockExternalContext().getFlowExecutionRedirectRequested());
}

public void testResumeViewStateForEventDestroyVariables() {
  Flow flow = new Flow("myFlow");
  StubViewFactory viewFactory = new StubViewFactory();
  ViewState state = new ViewState(flow, "viewState", viewFactory);
  state.addVariable(new ViewVariable("foo", new VariableValueFactory() {
    public Object createInitialValue(RequestContext context) {
      return "bar";
    }
    public void restoreReferences(Object value, RequestContext context) {
    }
  }));
  state.getTransitionSet().add(new Transition(on("submit"), to("next")));
  new ViewState(flow, "next", viewFactory);
  MockRequestControlContext context = new MockRequestControlContext(flow);
  state.enter(context);
  assertTrue(context.getViewScope().contains("foo"));
  context = new MockRequestControlContext(context.getFlowExecutionContext());
  context.putRequestParameter("_eventId", "submit");
  state.resume(context);
  assertTrue(context.getFlowExecutionContext().isActive());
  assertEquals("next", context.getCurrentState().getId());
  assertFalse(context.getViewScope().contains("foo"));
}