Examples of org.apache.struts.action.ActionForm

org.apache.struts.action.ActionForm

An ActionForm is a JavaBean optionally associated with one or more ActionMappings. Such a bean will have had its properties initialized from the corresponding request parameters before the corresponding Action.execute method is called.

When the properties of this bean have been populated, but before the execute method of the Action is called, this bean's validate method will be called, which gives the bean a chance to verify that the properties submitted by the user are correct and valid. If this method finds problems, it returns an error messages object that encapsulates those problems, and the controller servlet will return control to the corresponding input form. Otherwise, the validate method returns null, indicating that everything is acceptable and the corresponding Action.execute method should be called.

This class must be subclassed in order to be instantiated. Subclasses should provide property getter and setter methods for all of the bean properties they wish to expose, plus override any of the public or protected methods for which they wish to provide modified functionality.

Because ActionForms are JavaBeans, subclasses should also implement Serializable, as required by the JavaBean specification. Some containers require that an object meet all JavaBean requirements in order to use the introspection API upon which ActionForms rely.
@version $Rev: 421119 $ $Date: 2005-11-12 08:14:24 -0500 (Sat, 12 Nov 2005)$

  protected ViewAdapter executeAction(Object actionBean, ActionContext context)
  {


    BasicFormAction action = (BasicFormAction) actionBean;


    ActionForm form = context.getForm();


    boolean hasErrors = hasErrors(context);
    action.setInputError(hasErrors);
    
    if (form instanceof BindingForm && !hasErrors)

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  protected ViewAdapter executeAction(Object actionBean, ActionContext context)
  {


    BasicSubmitAction action = (BasicSubmitAction) actionBean;


    ActionForm form = context.getForm();


    HttpServletRequest request = context.getRequest();


    boolean cancelled = false;
    if (request.getAttribute(Globals.CANCEL_KEY) != null)

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    private static SubActionWrapper getSubActionWrapper(ActionMapping mapping, ActionForm form, ActionMapping subMapping,
                                                        HttpServletRequest request, int index) throws ClassNotFoundException,
                    IllegalAccessException, InstantiationException, InvocationTargetException {
        String formName = subMapping.getName();
        ActionForm subForm = getActionForm(subMapping, request);


        FormBeanConfig formBean = mapping.getModuleConfig().findFormBeanConfig(formName);
        String className = formBean == null ? null : formBean.getType();
        if (className == null)
            return null;


        if (subForm == null || !className.equals(subForm.getClass().getName()))
            subForm = (ActionForm) Class.forName(className).newInstance();


        if ("request".equals(mapping.getScope()))
            request.setAttribute(formName, subForm);
        else
            request.getSession().setAttribute(formName, subForm);


        subForm.reset(mapping, request);


        /*
         * We dont want to try and populate all forms on a post, only the one
         * that has requested it. For this the form must have a hidden parameter
         * with the name of 'subForm' and the value being the form name to

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            name = "unspecified";
    // JDR added the ability to refresh all sub forms.
        boolean refreshAll = new Boolean(request.getParameter("refreshAll"));
        
        String subForm = dispatchForm.getSubForm();
        ActionForm subform = (ActionForm) request.getSession().getAttribute(subForm);
        ActionForward fwd = null;


        // Now try to create actions and run the provided action target on each.
        // Any forwards returned are ignored
        for (SubActionWrapper wrapper : subActions) {

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    @SuppressWarnings("unchecked")
    private void showResource() {
        StrutsExecutionStep executionStep = new StrutsExecutionStep(getRequestPath(), "display", getForwardPath());
        executeStep(executionStep);
        
        ActionForm actionForm = getActionForm();
        assertNotNull("Should not be null", actionForm);
        assertTrue("Should be of type " + actionFormClass.getName(), actionForm.getClass().isAssignableFrom(actionFormClass));


        AbstractResourcesForm<R> resourcesForm = (AbstractResourcesForm<R>) actionForm;
        TableItemModel<R> model = resourcesForm.getModel();
        assertEquals("Should have " + getInitialResourceCount() + " row(s)", getInitialResourceCount(), model.getRowCount());
    }

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        addRequestParameter("selectedResource", String.valueOf(resource.getResourceId()));
        performActionAndVerifyPath(getInitialRequestPath(), "edit", getRequestPath());


        try {
            performActionAndVerifyTiles("unspecified");
            ActionForm actionForm = getActionForm();
            assertNotNull("Should not be null", actionForm);
            assertTrue("Should be of type " + getActionFormClass().getName(), actionForm.getClass().isAssignableFrom(getActionFormClass()));


            AbstractResourceForm<T> resourceForm = (AbstractResourceForm<T>) actionForm;
            T formResource = resourceForm.getResource();
            assertEquals(resource, formResource);
        } finally {

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    public void testViewResource() throws DuplicateResourceNameException, NoPermissionException {
        T resource = executeEditRedirect();


        try {
            performActionAndVerifyTiles("view");
            ActionForm actionForm = getActionForm();
            assertNotNull("Should not be null", actionForm);
            assertTrue("Should be of type " + getActionFormClass().getName(), actionForm.getClass().isAssignableFrom(getActionFormClass()));


            AbstractResourceForm<T> resourceForm = (AbstractResourceForm<T>) actionForm;
            assertTrue("Should be read only", resourceForm.getReadOnly());
            T formResource = resourceForm.getResource();
            assertEquals(resource, formResource);

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    public void testEditResource() throws DuplicateResourceNameException, NoPermissionException {
        T resource = executeEditRedirect();


        try {
            performActionAndVerifyTiles("edit");
            ActionForm actionForm = getActionForm();
            assertNotNull("Should not be null", actionForm);
            assertTrue("Should be of type " + getActionFormClass().getName(), actionForm.getClass().isAssignableFrom(getActionFormClass()));


            AbstractResourceForm<T> resourceForm = (AbstractResourceForm<T>) actionForm;
            T formResource = resourceForm.getResource();
            assertEquals(resource, formResource);
        } finally {

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        T resource = createResource();
        addRequestParameter("selectedResource", String.valueOf(resource.getResourceId()));
        performActionAndVerifyPath(getInitialRequestPath(), "clone", getRequestPath());
        
        performActionAndVerifyTiles("clone");
        ActionForm actionForm = getActionForm();
        assertTrue("Should be of type " + getActionFormClass().getName(), actionForm.getClass().isAssignableFrom(getActionFormClass()));
        return resource;
    }

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        T resource = createResource();
        addRequestParameter("selectedResource", String.valueOf(resource.getResourceId()));
        performActionAndVerifyPath(getInitialRequestPath(), "clone", "");
        
        performActionAndVerifyTiles("clone");
        ActionForm actionForm = getActionForm();
        assertTrue("Should be of type " + getActionFormClass().getName(), actionForm.getClass().isAssignableFrom(getActionFormClass()));
        return resource;
    }

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