Ok, I'll take that approach then. Just for the record. This used to work in tapestry 3.
Wouter On 9/10/05, Ron Piterman <[EMAIL PROTECTED]> wrote: > Hi, > I looked at your code - > it seems you try to render the same block recursivley. This will work > only in really stateless components. > I will assume the For component is not stateless - you can not > recusivley render it from within the component itself because it will > get "confused". Its similar to thread-saftyness - you can not use the > same component from two threads, and you can not invoke the > renderComponent method again from within the renderComponent. > > Instead, use a component which iterates through your tree from java and > renders its body for each node. > > Cheers, > Ron > > > > > > Wouter De Vaal: > > I've tried the For component and it has the same behaviour. > > > > Anyone any idea's? > > > > Wouter > > > > On 9/9/05, Wouter De Vaal <[EMAIL PROTECTED]> wrote: > > > >>I'll try that. > >>A remark though: the apidoc doesn't show anything about Foreach being > >>deprecated. > >> > >>Wouter > >> > >>On 9/9/05, Ron Piterman <[EMAIL PROTECTED]> wrote: > >> > >>>Am not sure if it will solve your problem, but Foreach is deprecated. > >>>Try using For instead, may be it will work... > >>> > >>> > >>> > >>> Wouter De Vaal: > >>> > >>>>Hi, > >>>> > >>>>I have a strange problem with a foreach component within a block that > >>>>only gets called once, but the block renders multiple times. This code > >>>>worked in tapestry 3, but gives an overflow in tapestry 4 beta 6, > >>>>because the foreach source doesn't get reevaluated I think. > >>>> > >>>>Regards, > >>>>Wouter > >>>> > >>>>PS: I've created a skeleton test page/class to test it: > >>>> > >>>>html: > >>>><html> > >>>><body> > >>>> <comp jwcid="@RenderBlock" block="ognl:components.subMenuItems"/> > >>>> <comp jwcid="[EMAIL PROTECTED]"> > >>>> Blah:<br/> > >>>> <comp jwcid="@Foreach" source="ognl:menuItems" > >>>> value="ognl:menuItem"> > >>>> <comp jwcid="@Insert" value="ognl:menuName"/><br/> > >>>> <comp jwcid="@Conditional" > >>>> condition="ognl:hasAvailableSubItems"> > >>>> <comp jwcid="@Insert" value="ognl:test"/> > >>>> <comp jwcid="@RenderBlock" > >>>>block="ognl:components.subMenuItems"/> > >>>> </comp> > >>>> </comp> > >>>> </comp> > >>>></body> > >>>></html> > >>>> > >>>>Page file: > >>>><?xml version="1.0" encoding="UTF-8"?> > >>>><!DOCTYPE page-specification PUBLIC > >>>> "-//Apache Software Foundation//Tapestry Specification 4.0//EN" > >>>> "http://jakarta.apache.org/tapestry/dtd/Tapestry_4_0.dtd";> > >>>><page-specification class="EditMenuItemTest"> > >>>> > >>>></page-specification> > >>>> > >>>>Java class: > >>>>import java.util.ArrayList; > >>>>import java.util.List; > >>>> > >>>>import org.apache.tapestry.event.PageBeginRenderListener; > >>>>import org.apache.tapestry.event.PageEvent; > >>>>import org.apache.tapestry.html.BasePage; > >>>> > >>>>public abstract class EditMenuItemTest extends BasePage implements > >>>> PageBeginRenderListener { > >>>> > >>>> public class MenuItem { > >>>> > >>>> private String name; > >>>> private List<MenuItem> subItems = new ArrayList<MenuItem>(); > >>>> > >>>> public MenuItem(String name) { > >>>> this.name = name; > >>>> } > >>>> > >>>> public List<MenuItem> getSubItems() { > >>>> return subItems; > >>>> } > >>>> > >>>> public void setSubItems(List<MenuItem> subItems) { > >>>> this.subItems = subItems; > >>>> } > >>>> > >>>> public String getName() { > >>>> return name; > >>>> } > >>>> > >>>> @Override > >>>> public String toString() { > >>>> return name; > >>>> } > >>>> > >>>> } > >>>> > >>>> public void pageBeginRender(PageEvent evt) { > >>>> // create some menu items > >>>> MenuItem root = new MenuItem("root"); > >>>> MenuItem a = new MenuItem("a"); > >>>> MenuItem b = new MenuItem("b"); > >>>> MenuItem c = new MenuItem("c"); > >>>> MenuItem aa = new MenuItem("aa"); > >>>> MenuItem ab = new MenuItem("ab"); > >>>> MenuItem ac = new MenuItem("ac"); > >>>> MenuItem aba = new MenuItem("aba"); > >>>> MenuItem abb = new MenuItem("abb"); > >>>> root.getSubItems().add(a); > >>>> root.getSubItems().add(b); > >>>> root.getSubItems().add(c); > >>>> c.getSubItems().add(aa); > >>>> c.getSubItems().add(ab); > >>>> c.getSubItems().add(ac); > >>>> ab.getSubItems().add(aba); > >>>> ab.getSubItems().add(abb); > >>>> setRootMenuItem(root); > >>>> } > >>>> > >>>> public abstract MenuItem getRootMenuItem(); > >>>> > >>>> public abstract void setRootMenuItem(MenuItem root); > >>>> > >>>> public abstract MenuItem getMenuItem(); > >>>> > >>>> public List<MenuItem> getMenuItems() { > >>>> if (getMenuItem() == null) { > >>>> System.out.println("get menu items with null called, > >>>>returning: " + getRootMenuItem().getSubItems()); > >>>> return getRootMenuItem().getSubItems(); > >>>> } else { > >>>> System.out.println("get menu items called, returning: " + > >>>>getMenuItem().getSubItems()); > >>>> return getMenuItem().getSubItems(); > >>>> } > >>>> } > >>>> > >>>> public String getMenuName() { > >>>> System.out.println("get menu name called, current menu item: " > >>>> + getMenuItem()); > >>>> return getMenuItem().getName(); > >>>> } > >>>> > >>>> public String getTest() { > >>>> System.out.println("test called, current menu item: " + > >>>> getMenuItem()); > >>>> return ""; > >>>> } > >>>> > >>>> public boolean isHasAvailableSubItems() { > >>>> System.out.println("available:" + getMenuItem().getSubItems()); > >>>> return (getMenuItem().getSubItems().size() > 0); > >>>> } > >>>>} > >>>> > >>>>--------------------------------------------------------------------- > >>>>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>>>For additional commands, e-mail: [EMAIL PROTECTED] > >>>> > >>>> > >>> > >>> > >>>--------------------------------------------------------------------- > >>>To unsubscribe, e-mail: [EMAIL PROTECTED] > >>>For additional commands, e-mail: [EMAIL PROTECTED] > >>> > >>> > >> > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
