Hi,
Just wanted to mention that appropriate modifications have been made to
SVN HEAD and the problem has been resolved. The provided code should
work okay in the next beta, both with Foreach and For.
-mb
Wouter De Vaal wrote:
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);
}
}
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