Hi,
actually it is even more strict:
Once the ART has started generating the response - including preparation
of components - you can now longer add other components.
This hasn't changed from 7.x to 8.x
We were discussing on lifting this restriction, but this would come with
some difficulties: what if a component in beforeRender() adds one of its
ancestors to be updated?
Have fun
Sven
Am 25.05.2018 um 10:44 schrieb Tobias Gierke:
Hi,
Can someone please explain to me what's causing this exception (see
end of this mail) when trying to add a component to an ART ?
In
http://apache-wicket.1842946.n4.nabble.com/Components-can-no-longer-be-added-td4662838.html
Sven Meier said
once rendering of components via Ajax has started, you cannot update
components.
but as can be seen from the stacktrace I'm still in the beforeRender()
phase ... or is anything inside the beforeRender() code path already
considered to be part of the rendering phase ?
Thanks,
Tobias
----------------------------------------
java.lang.IllegalStateException: Components can no longer be added
at
org.apache.wicket.page.PartialPageUpdate.assertNotFrozen(PartialPageUpdate.java:858)
~[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.page.PartialPageUpdate.assertComponentsNotFrozen(PartialPageUpdate.java:851)
~[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.page.PartialPageUpdate.add(PartialPageUpdate.java:448)
~[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.ajax.AjaxRequestHandler.add(AjaxRequestHandler.java:263)
~[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.ajax.AjaxRequestHandler.add(AjaxRequestHandler.java:239)
~[wicket-core-8.0.0.jar:8.0.0]
at
com.vodecc.voipmng.boundary.wicket.xdrsearch.XDRListPanel$1.lambda$0(XDRListPanel.java:73)
~[classes/:?]
at
com.vodecc.voipmng.boundary.wicket.behaviors.AjaxTooltipManager.doOnAjaxRequest(AjaxTooltipManager.java:411)
~[classes/:?]
at
com.vodecc.voipmng.boundary.wicket.xdrsearch.XDRListPanel$1.queryFinished(XDRListPanel.java:73)
~[classes/:?]
at
com.vodecc.voipmng.boundary.wicket.streamsearch.AbstractSearchResultsDataProvider.invokeCallbacks(AbstractSearchResultsDataProvider.java:241)
[classes/:?]
at
com.vodecc.voipmng.boundary.wicket.streamsearch.AbstractSearchResultsDataProvider.getSearchResults(AbstractSearchResultsDataProvider.java:230)
[classes/:?]
at
com.vodecc.voipmng.boundary.wicket.streamsearch.AbstractSearchResultsDataProvider.getSearchResults(AbstractSearchResultsDataProvider.java:252)
[classes/:?]
at
com.vodecc.voipmng.boundary.wicket.xdrsearch.XDRDataTable.onConfigure(XDRDataTable.java:436)
[classes/:?]
at org.apache.wicket.Component.configure(Component.java:984)
[wicket-core-8.0.0.jar:8.0.0]
at org.apache.wicket.Component.beforeRender(Component.java:926)
[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1753)
[wicket-core-8.0.0.jar:8.0.0]
at org.apache.wicket.Component.onBeforeRender(Component.java:3796)
[wicket-core-8.0.0.jar:8.0.0]
at org.apache.wicket.Component.beforeRender(Component.java:937)
[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.page.PartialPageUpdate.prepareComponent(PartialPageUpdate.java:322)
[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.page.PartialPageUpdate.writeComponents(PartialPageUpdate.java:250)
[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.page.PartialPageUpdate.writeTo(PartialPageUpdate.java:162)
[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.ajax.AjaxRequestHandler.respond(AjaxRequestHandler.java:383)
[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:912)
[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.request.RequestHandlerExecutor.execute(RequestHandlerExecutor.java:65)
[wicket-request-8.0.0.jar:8.0.0]
at
org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:283)
[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:253)
[wicket-core-8.0.0.jar:8.0.0]
at
org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:221)
[wicket-core-8.0.0.jar:8.0.0]
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