What are you trying to do have a constant navigation system?
TilesAction is like Action except it has the tiles context aviable
giving easy access to values in you tiles defs.
TilesControllers let you do stuff to tiles defs before an action.
You current code should work if you map the action (remove the
implements Controller) and map it
<action path="/myaction" class="com.packagename.MyAction" />
and then call it in your tiles def
<definition name="mydef" controllerUrl="/myaction.do" ..
at least i think so.
Alternatively the example i gave you of a controller would be
<definition name="mydef" controllerClass="com.packagename.MyController">
..
he problem with controllers is that its hard to handle exceptions..
But if you're not doing anything that clever in there then perhaps
you'd deem that as okay.
Mark
On Wed, 27 Oct 2004 23:41:07 +0800, PC Leung <[EMAIL PROTECTED]> wrote:
> Mark,
>
> It is my 1st trial of using Tiles.
> I do not know how to choose. What are you using?
> Could you show me some fragment codes with
> struts-defs.xml,
> struts-config.xml
> action or controllerSomething?
>
> Thanks
>
>
>
>
> On Wed, 27 Oct 2004 17:26:55 +0200, Mark Lowe <[EMAIL PROTECTED]> wrote:
> > Decide if you want to use an action or a tiles controller.. Or a tiles action..
> >
> > You can use an action if you return null rather than a forward (well
> > for a forward) and use the controllor url attribute. But this means
> > wiring an an action and a tile/ controllorUrl="/myaction.do"
> >
> > Mark
> >
> >
> >
> > On Wed, 27 Oct 2004 23:22:03 +0800, PC Leung <[EMAIL PROTECTED]> wrote:
> > > Error messages display as follows.
> > >
> > > [ServletException in:/layout/menu.jsp] null'
> > > java.lang.ClassCastException at
> > > org.apache.jsp.layout.menu_jsp._jspService(menu_jsp.java:193) at
> > > org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
> > > ...
> > > ...
> > >
> > > after adding a few lines to test in the following class,
> > >
> > > public final class MyMenuAction extends TilesAction implements Controller {
> > > public ActionForward perform( ComponentContext context,
> > > ActionMapping mapping,
> > > ActionForm form,
> > > HttpServletRequest request,
> > > HttpServletResponse response)
> > > throws IOException, ServletException {
> > > perform( context, request, response, getServlet().getServletContext() );
> > > return null;
> > > }
> > > public void perform(ComponentContext context,
> > > HttpServletRequest request, HttpServletResponse response,
> > > ServletContext servletContext)
> > > throws ServletException, IOException {
> > > List menuItems = (List) context.getAttribute("items"); //
> > > menuItems.add("customize1");
> > > // this few lines
> > > menuItems.add("customize2"); //
> > > context.putAttribute("items", menuItems); //
> > > ...
> > >
> > > Struts-defs.xml:
> > > <definition name="erp.menu.home" path="/layout/menu.jsp"
> > > controllerClass="com.common.tiles.MyMenuAction" >
> > > <put name="title" value="Tiles" />
> > > <putList name="items" >
> > > <item value="customize1" link="/Welcome1.jsp" />
> > > <item value="customize2" link="/Welcome2.jsp" />
> > > </putList>
> > > </definition>
> > >
> > > How can I add a few lines of creating a list to test the menu?
> > >
> > > Thanks
> > >
> > > On Tue, 26 Oct 2004 19:57:49 +0200, Mark Lowe <[EMAIL PROTECTED]> wrote:
> > > > To do what you want you want a tiles controller, not an action.
> > > >
> > > > import org.apache.struts.tiles.ComponentContext;
> > > > import org.apache.struts.tiles.ControllerSupport;
> > > > import org.apache.struts.tiles.beans.SimpleMenuItem;
> > > > import java.util.List;
> > > > import javax.servlet.ServletContext;
> > > > import javax.servlet.ServletException;
> > > > import javax.servlet.http.HttpServletRequest;
> > > > import javax.servlet.http.HttpServletResponse;
> > > > import javax.servlet.http.HttpSession;
> > > >
> > > > public class GroupController extends ControllerSupport {
> > > > public void execute(ComponentContext tileContext,
> > > > HttpServletRequest request, HttpServletResponse response,
> > > > ServletContext context) throws Exception {
> > > >
> > > > List menuItems = (List) context.getAttribute("items");
> > > >
> > > > .. add some menu items.
> > > >
> > > > context.putAttribute("items", menuItems);
> > > > }
> > > > }
> > > >
> > > > I;d try and avoid using a tiles controller as exception handling is an
> > > > arse. Perhaps look at having a BaseAction that adds teh relevant items
> > > > into the request.
> > > >
> > > > public abstract class BaseAction extends Action {
> > > >
> > > > protected abstract ActionForward doExecute(ActionMapping mapping,
> > > > ActionForm form, HttpServletRequest request,
> > > > HttpServletResponse response) throws Exception;
> > > >
> > > > public ActionForward execute(ActionMapping mapping, ActionForm form,
> > > > HttpServletRequest request, HttpServletResponse response)
> > > > throws Exception {
> > > > ..
> > > > request.setAttribute("items",menuItems); // perhaps application
> > > > scope
> > > >
> > > > return doExecute(mapping, form, request, response);
> > > > }
> > > > }
> > > >
> > > > Now execute will be run for ever class that subclasses it, and they
> > > > will have to use the doExecute(), method.. For more details check the
> > > > xpetstore project out that uses this technique. This approach will
> > > > allow you to make use of exception handlers.
> > > >
> > > > Mark
> > > >
> > > >
> > > >
> > > >
> > > > On 26 Oct 2004, at 17:14, PC Leung wrote:
> > > >
> > > > > Hello world,
> > > > >
> > > > > The following is a fragment of tiles-defs.xml.
> > > > > where MyMenuAction actually is UserMenuAction in Tiles.
> > > > >
> > > > > <definition name="erp.menu.home" path="/layout/menu.jsp"
> > > > > controllerClass="com.common.tiles.MyMenuAction" >
> > > > > <put name="title" value="Tiles" />
> > > > > <putList name="items" >
> > > > > <item value="customize" link="/Welcome.jsp" />
> > > > > ^^^^^^^^^^ ^^^^^^^^^^^^^^^
> > > > > </putList>
> > > > > </definition>
> > > > >
> > > > > Where and how should I put the coding inside MyMenuAction
> > > > > so that I can add a number of items which behaves as
> > > > > a list of menu item?
> > > > >
> > > > > Thanks
> > > > >
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