Solved ! I was referring to the components parameter rather than the parameter acquired from the context. Ouch !
On Wed, Feb 27, 2013 at 3:08 AM, Muhammad Gelbana <m.gelb...@gmail.com>wrote: > I tried adding a t:formState to the loops, but it was no good. I even took > the the whole loop outside of the form component and surprisingly, I'm > still having the same error !! > > > On Wed, Feb 27, 2013 at 2:31 AM, Muhammad Gelbana <m.gelb...@gmail.com>wrote: > >> I have a component that generates images based on multiple inputs. Lately >> I increased the parameters for that component. The new parameters acquire >> their primitive values during an iteration in 2 loops. So 2 loops are >> eventually generated a set of images. >> >> The image-generating component generates images with a url that invokes >> an event for the component and passes it's parameters as context. The >> images URLs are generated as expected but right before using one of the new >> primitive parameters (long) to generate the image, an error is thrown: >> >> Caused by: java.lang.NullPointerException: Property 'pieChartDetails' >>> (within property expression 'pieChartDetails.id', of >>> com.sc.ipk.portal.ixl.pages.IxlTrends@74a5eac1) is null. >> >> >> Here is my TML >> >> <t:loop >>> t:source="ixlDao.getCsvResultFiles(ixlTest?.getTestType().getId())" >>> t:value="csvFileResults"> >>> <article t:type="if" t:test="displayPieCharts" class="module width_full" >>> style="text-align: center;"> >>> <div class="module_content" style="margin: 5px 5px;"> >>> <div class="pieChartImg" t:type="loop" t:source="availablePieCharts" >>> t:value="pieChartDetails"> >>> <img t:type="ixl/Chart" t:chartType="literal:pie" t:chartId="* >>> pieChartDetails.id*" t:csvResultFileId="*csvFileResults.id*" >>> t:requestId="ixlTest?.id" >>> t:from="formattedStartTime" t:to="formattedEndTime" >>> t:interval="profile.timeInterval" t:width="300" t:height="300" /> >>> </div> >>> </div> >>> </article> >>> </t:loop> >> >> >> So the error is thrown AFTER the image URL is correctly generated. I just >> don't know why does it try to re-acquire the parameters value once again >> from the page ! >> >> When I debug through the component (*IxlChart i.e. ixl/Chart*) I find >> that I'm about to generate an image, but I need the *chartId* parameter, >> inspecting it using eclipse shows the expected value, but still that line >> of code that uses that value, keeps throwing the following exception >> >> >> Caused by: org.apache.tapestry5.ioc.internal.OperationException: Failure >>> reading parameter 'chartId' of component ixl/Trends:chart: Property >>> 'pieChartDetails' (within property expression 'pieChartDetails.id', of >>> com.sc.ipk.portal.ixl.pages.ixlTrends@74a5eac1) is null. [at >>> classpath:com/sc/ipk/portal/ixl/pages/ixlTrends.tml, line 100] >>> at >>> org.apache.tapestry5.ioc.internal.OperationTrackerImpl.logAndRethrow(OperationTrackerImpl.java:121) >>> at >>> org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:88) >>> at >>> org.apache.tapestry5.ioc.internal.PerThreadOperationTracker.invoke(PerThreadOperationTracker.java:87) >>> at >>> org.apache.tapestry5.ioc.internal.RegistryImpl.invoke(RegistryImpl.java:1124) >>> at >>> org.apache.tapestry5.internal.structure.ComponentPageElementResourcesImpl.invoke(ComponentPageElementResourcesImpl.java:146) >>> at >>> org.apache.tapestry5.internal.services.EventImpl.storeResult(EventImpl.java:84) >>> at >>> com.sc.ipk.portal.ixl.components.TapestryImage.dispatchComponentEvent(TapestryImage.java) >>> at >>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:927) >>> at >>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.processEventTriggering(ComponentPageElementImpl.java:1112) >>> ... 76 more >>> Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException: >>> Failure reading parameter 'chartId' of component ixl/Trends:chart: Property >>> 'pieChartDetails' (within property expression 'pieChartDetails.id', of >>> com.sc.ipk.portal.ixl.pages.ixlTrends@74a5eac1) is null. [at >>> classpath:com/sc/ipk/portal/ixl/pages/ixlTrends.tml, line 100] >>> at >>> org.apache.tapestry5.internal.transform.ParameterWorker$3$1.readFromBinding(ParameterWorker.java:268) >>> at >>> org.apache.tapestry5.internal.transform.ParameterWorker$3$1.get(ParameterWorker.java:381) >>> at >>> com.sc.ipk.portal.ixl.components.TapestryImage.conduit_get_chartId(TapestryImage.java) >>> at >>> com.sc.ipk.portal.ixl.components.ixlChart.getPieChart(ixlChart.java:37) >>> at com.sc.ipk.portal.ixl.components.ixlChart.getImage(ixlChart.java:29) >>> at >>> com.sc.ipk.portal.ixl.components.TapestryImage$1.getStream(TapestryImage.java:125) >>> at >>> org.apache.tapestry5.internal.services.StreamResponseResultProcessor.processResultValue(StreamResponseResultProcessor.java:52) >>> at >>> org.apache.tapestry5.internal.services.StreamResponseResultProcessor.processResultValue(StreamResponseResultProcessor.java:28) >>> at >>> $ComponentEventResultProcessor_7bcda80107c9.processResultValue(Unknown >>> Source) >>> at >>> $ComponentEventResultProcessor_7bcda8010785.processResultValue(Unknown >>> Source) >>> at >>> org.apache.tapestry5.internal.services.ComponentResultProcessorWrapper.handleResult(ComponentResultProcessorWrapper.java:47) >>> at >>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl$6.handleResult(ComponentPageElementImpl.java:1084) >>> at >>> org.apache.tapestry5.internal.services.EventImpl$1.invoke(EventImpl.java:89) >>> at >>> org.apache.tapestry5.internal.services.EventImpl$1.invoke(EventImpl.java:86) >>> at >>> org.apache.tapestry5.ioc.internal.OperationTrackerImpl.invoke(OperationTrackerImpl.java:74) >>> ... 83 more >>> Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException: >>> Property 'pieChartDetails' (within property expression >>> 'pieChartDetails.id', of com.sc.ipk.portal.ixl.pages.ixlTrends@74a5eac1) >>> is null. [at classpath:com/sc/ipk/portal/ixl/pages/ixlTrends.tml, line 100] >>> at >>> org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:63) >>> at >>> org.apache.tapestry5.internal.transform.ParameterWorker$3$1.readFromBinding(ParameterWorker.java:263) >>> ... 97 more >>> Caused by: java.lang.NullPointerException: Property 'pieChartDetails' >>> (within property expression 'pieChartDetails.id', of >>> com.sc.ipk.portal.ixl.pages.ixlTrends@74a5eac1) is null. >>> at >>> org.apache.tapestry5.internal.services.PropertyConduitSourceImpl.nullTerm(PropertyConduitSourceImpl.java:1495) >>> at $InternalPropertyConduit_7bcda8010737.navigate(Unknown Source) >>> at $InternalPropertyConduit_7bcda8010737.get(Unknown Source) >>> at >>> org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:59) >>> ... 98 more >> >> >> Thank you for your time >> > >
