| When rendering report with extended report item visitExtendedItem generates a null in 2.2. [message #249736] |
Wed, 25 July 2007 10:27  |
Eclipse User |
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I have an extended report item that works with Birt 2.1.2. When I try
to use this same report item using the Birt 2.2 runtime to render a
report containing the new report item I get the following error.
java.lang.NullPointerException
at
org.eclipse.birt.report.engine.executor.ExecutorManager$Exec utorFactory.visitExtendedItem(ExecutorManager.java:274)
at
org.eclipse.birt.report.engine.ir.ExtendedItemDesign.accept( ExtendedItemDesign.java:37)
at
org.eclipse.birt.report.engine.executor.ExecutorManager$Exec utorFactory.createExecutor(ExecutorManager.java:246)
at
org.eclipse.birt.report.engine.executor.ExecutorManager.crea teExecutor(ExecutorManager.java:196)
at
org.eclipse.birt.report.engine.executor.ReportExecutor.getNe xtChild(ReportExecutor.java:114)
at
org.eclipse.birt.report.engine.internal.executor.wrap.Wrappe dReportExecutor.getNextChild(WrappedReportExecutor.java:64)
at
org.eclipse.birt.report.engine.internal.executor.wrap.Wrappe dReportExecutor.getNextChild(WrappedReportExecutor.java:64)
at
org.eclipse.birt.report.engine.layout.html.HTMLPageLM$1.getN extChild(HTMLPageLM.java:59)
at
org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout Children(HTMLPageLM.java:125)
at
org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout (HTMLPageLM.java:84)
at
org.eclipse.birt.report.engine.layout.html.HTMLReportLayoutE ngine.layout(HTMLReportLayoutEngine.java:90)
at
org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.doR un(RunAndRenderTask.java:148)
at
org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.run (RunAndRenderTask.java:71)
Any ideas. At this point it hasn't even executed any of the code in my
extended report item.
Any help would be appreciated.
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| Re: When rendering report with extended report item visitExtendedItemgenerates a null in 2.2. [message #250818 is a reply to message #250075] |
Wed, 01 August 2007 15:47  |
| Eclipse User |
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Sorry for the slow reply Scott.
Where would I find the new RotatedLabel example? I went back to
www.actuate.com/birt/contributions and that is still the old one.
Actuate is where I normally grab that example.
I also took a look in birt-sample-plugins-2_2_0.zip but that doesn't
seem to have the rotatedText example either.
Is it one of the other downloads off the Birt site?
Thanks,
Lester
Scott Rosenbaum wrote:
> Lester,
>
> I believe that the RotatedText has been updated in the most recent builds.
>
> Scott Rosenbaum
>
>> I fixed it and here is what I discovered.
>>
>> So the documentation of the org.eclipse.birt.report.engine.extension
>> package says "Among the three interfaces, only IReportItemPresentation
>> is required, and the other two are optional" but this doesn't seem to
>> be the case, as my reportitem that is based off the RotatedLabel
>> example only implements the extension point for the presention but
>> blows up when the code tries to create a IReportItemGeneration
>> executor.
>>
>> To solve I implemented the reportitemGeneration extension point and
>> pointed it to a class that extends ReportItemGenerationBase which
>> implements the IReportItemGeneration interface with empty methods and
>> voila it works.
>>
>> So the documentation needs to be updated and the RotatedItemExample
>> needs to be modified.
>>
>> Lester Mundt wrote:
>>
>>> I have discovered that the rendering of my extended report item fails
>>> at
>>>
>>> IReportItemExecutor executor =
>>> ExtensionManager.getInstance().createReportItemExecutor(
>>> ExecutorManager.this, tagName );
>>>
>>> in Executormanage.visitExtendedItem()
>>>
>>> in turn this is becuase ExtensionManager.createReportItemExecutor
>>> calls IConfigurationElement config =
>>> (IConfigurationElement)generationExtensions.get( itemType );
>>>
>>> My extended item which is based off of the RotatedItem example
>>> extends the reportItemPresentation extension point rather than the
>>> reportItemGeneration extension point.
>>>
>>> This all used to work with 2.1.2 of course, so know I am wondering
>>> how I should change the code.
>>>
>>> 1. Should my extended report item also implement the
>>> reportItemGeneration extension point?
>>>
>>> 2. Should my extended report item only implement the
>>> reportItemGeneration extension point?
>>>
>>> 3. Is there a way when generating the reportdesign to add the fact
>>> that this extended item is in fact a reportItemPresentation?
>>>
>>> So could someone please provide some direction as to what I should do
>>> to correct this and perhaps some examples? Also does anyone know why
>>> this has changed this way?
>>>
>>> Thanks,
>>> Lester
>>> Lester Mundt wrote:
>>>
>>>> I have an extended report item that works with Birt 2.1.2. When I
>>>> try to use this same report item using the Birt 2.2 runtime to
>>>> render a report containing the new report item I get the following
>>>> error.
>>>>
>>>> java.lang.NullPointerException
>>>> at
>>>> org.eclipse.birt.report.engine.executor.ExecutorManager$Exec utorFact
>>>> ory.visitExtendedItem(ExecutorManager.java:274)
>>>> at
>>>> org.eclipse.birt.report.engine.ir.ExtendedItemDesign.accept( Extended
>>>> ItemDesign.java:37)
>>>>
>>>> at
>>>> org.eclipse.birt.report.engine.executor.ExecutorManager$Exec utorFact
>>>> ory.createExecutor(ExecutorManager.java:246)
>>>>
>>>> at
>>>> org.eclipse.birt.report.engine.executor.ExecutorManager.crea teExecut
>>>> or(ExecutorManager.java:196)
>>>>
>>>> at
>>>> org.eclipse.birt.report.engine.executor.ReportExecutor.getNe xtChild(
>>>> ReportExecutor.java:114)
>>>>
>>>> at
>>>> org.eclipse.birt.report.engine.internal.executor.wrap.Wrappe dReportE
>>>> xecutor.getNextChild(WrappedReportExecutor.java:64)
>>>>
>>>> at
>>>> org.eclipse.birt.report.engine.internal.executor.wrap.Wrappe dReportE
>>>> xecutor.getNextChild(WrappedReportExecutor.java:64)
>>>>
>>>> at
>>>> org.eclipse.birt.report.engine.layout.html.HTMLPageLM$1.getN extChild
>>>> (HTMLPageLM.java:59)
>>>>
>>>> at
>>>> org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout Children
>>>> (HTMLPageLM.java:125)
>>>>
>>>> at
>>>> org.eclipse.birt.report.engine.layout.html.HTMLPageLM.layout (HTMLPag
>>>> eLM.java:84)
>>>>
>>>> at
>>>> org.eclipse.birt.report.engine.layout.html.HTMLReportLayoutE ngine.la
>>>> yout(HTMLReportLayoutEngine.java:90)
>>>>
>>>> at
>>>> org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.doR un(RunAn
>>>> dRenderTask.java:148)
>>>>
>>>> at
>>>> org.eclipse.birt.report.engine.api.impl.RunAndRenderTask.run (RunAndR
>>>> enderTask.java:71)
>>>>
>>>> Any ideas. At this point it hasn't even executed any of the code in
>>>> my extended report item.
>>>>
>>>> Any help would be appreciated.
>>>>
>
>
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