How does one debug this issue. I can trace the request on the first pass into
the update method shown below - subsequent request do not show up in there.I am
setting setOutputMarkupId(true) on the panel that needs to be updated by
Ajax.ERROR [http-8080-2] (RequestCycle.java:1043) - markupId cannot be
emptyjava.lang.IllegalArgumentException: markupId cannot be empty at
wicket.ajax.AjaxRequestTarget.addComponent(AjaxRequestTarget.java:217) at
wicket.ajax.AjaxRequestTarget.addComponent(AjaxRequestTarget.java:201)The AJAX
debugger shows the following - INFO: INFO: Initiating
Ajax GET request on
/vvaves/vvaves/?wicket:interface=:0:P1:rows:1:cols:2:P2:AJAXLink::IBehaviorListener&wicket:behaviorId=0&random=0.7030357510732387INFO:
Invoking pre-call handler(s)...ERROR: Received Ajax response with code:
500INFO: Invoking post-call handler(s)...INFO: Invoking failure
handler(s)...When I repeat the same request the second and subsequent times -
ERROR [http-8080-2] (RequestCycle.java:1043) - This method can only be called
on a component that has already been added to its
parent.java.lang.IllegalStateException: This method can only be called on a
component that has already been added to its parent. at
wicket.Component.replaceWith(Component.java:1857) at
com.vvaves.web.ContentPanel$1$1.update(P1.java:83) at
com.vvaves.web.FeedPanel$1.onClick(P2.java:28) at
wicket.ajax.markup.html.AjaxLink$1.onEvent(AjaxLink.java:66)INFO: Initiating
Ajax GET request on
/vvaves/vvaves/?wicket:interface=:0:ContentPanel:rows:1:cols:2:FeedPanel:SimulatorLink::IBehaviorListener&wicket:behaviorId=0&random=0.7268855594995411INFO:
Invoking pre-call handler(s)...ERROR: Received Ajax response with code:
500INFO: Invoking post-call handler(s)...INFO: Invoking failure
handler(s)...code in the update method -final P3
origp3(...);origp3.setoutputmarkupid(true);item.add(new P2(...)
{ public void update(AjaxRequestTarget target)
{ P3 p3 = new P3(...);
p3.setOutputMarkupId(true);
origp3.replaceWith(p3); if(target != null){
target.addComponent(origp3);
} } } );p2.javaabstract public class P2(...){
public P2(...){ add(new AjaxLink("AjaxLink") { public
void onClick(AjaxRequestTarget t) {
P2.this.update(target) } }); } protected abstract void
update(AjaxRequestTarget t);}thx
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