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https://issues.apache.org/jira/browse/TAP5-822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12899789#action_12899789
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Josh Canfield commented on TAP5-822:
------------------------------------
This is fixed in the trunk
> Strange error when trying to reference property from hierarchy of generic
> classes
> ---------------------------------------------------------------------------------
>
> Key: TAP5-822
> URL: https://issues.apache.org/jira/browse/TAP5-822
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.1.0.5
> Reporter: Vjeran Marcinko
>
> In my page template I want to print "timeRange" property value of my custom
> entity object that is generic subclass of some other generic superclass.
> Time range value: ${openReservationSubrequest.timeRange}
> Inside my page I have just :
> public OpenReservationSubrequest getOpenReservationSubrequest() {
> return openReservationSubrequest;
> }
> ..and my class is defined like this where superclass
> (TimeRangedReservationSubrequest) contains "timeRange" property:
> public abstract class OpenReservationSubrequest<A extends Access, R extends
> Reservation<A>> extends TimeRangedReservationSubrequest<R> {
> Tapestry 5.1.0.5 raises following error:
> Caused by: org.apache.tapestry5.ioc.internal.util.TapestryException: Could
> not convert 'openReservationSubrequest.timeRange' into a component parameter
> binding: java.lang.ArrayIndexOutOfBoundsException: 1
> at
> org.apache.tapestry5.internal.services.BindingSourceImpl.newBinding(BindingSourceImpl.java:85)
> [tapestry-core-5.1.0.5.jar:na]
> at
> $BindingSource_1234622cb0f.newBinding($BindingSource_1234622cb0f.java)
> [tapestry-ioc-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.services.PageElementFactoryImpl.newExpansionElement(PageElementFactoryImpl.java:165)
> [tapestry-core-5.1.0.5.jar:na]
> at
> $PageElementFactory_1234622cb06.newExpansionElement($PageElementFactory_1234622cb06.java)
> [tapestry-ioc-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.pageload.PageLoaderImpl$15.execute(PageLoaderImpl.java:1033)
> [tapestry-core-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl.runActions(ComponentAssemblerImpl.java:202)
> [tapestry-core-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.pageload.ComponentAssemblerImpl.assembleRootComponent(ComponentAssemblerImpl.java:88)
> [tapestry-core-5.1.0.5.jar:na]
> ... 99 common frames omitted
> Caused by: java.lang.RuntimeException:
> java.lang.ArrayIndexOutOfBoundsException: 1
> at
> org.apache.tapestry5.ioc.internal.services.PropertyAccessImpl.buildAdapter(PropertyAccessImpl.java:96)
> [tapestry-ioc-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.ioc.internal.services.PropertyAccessImpl.getAdapter(PropertyAccessImpl.java:65)
> [tapestry-ioc-5.1.0.5.jar:na]
> at
> $PropertyAccess_1234622cabc.getAdapter($PropertyAccess_1234622cabc.java)
> [tapestry-ioc-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.services.PropertyConduitSourceImpl$PropertyConduitBuilder.infoForPropertyNode(PropertyConduitSourceImpl.java:939)
> [tapestry-core-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.services.PropertyConduitSourceImpl$PropertyConduitBuilder.infoForPropertyOrMethod(PropertyConduitSourceImpl.java:932)
> [tapestry-core-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.services.PropertyConduitSourceImpl$PropertyConduitBuilder.createGetterAndSetter(PropertyConduitSourceImpl.java:421)
> [tapestry-core-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.services.PropertyConduitSourceImpl$PropertyConduitBuilder.createAccessors(PropertyConduitSourceImpl.java:407)
> [tapestry-core-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.services.PropertyConduitSourceImpl$PropertyConduitBuilder.createInstance(PropertyConduitSourceImpl.java:260)
> [tapestry-core-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.services.PropertyConduitSourceImpl.build(PropertyConduitSourceImpl.java:1205)
> [tapestry-core-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.services.PropertyConduitSourceImpl.create(PropertyConduitSourceImpl.java:1080)
> [tapestry-core-5.1.0.5.jar:na]
> at
> $PropertyConduitSource_1234622cb27.create($PropertyConduitSource_1234622cb27.java)
> [tapestry-ioc-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.bindings.PropBindingFactory.newBinding(PropBindingFactory.java:49)
> [tapestry-core-5.1.0.5.jar:na]
> at
> $BindingFactory_1234622cb28.newBinding($BindingFactory_1234622cb28.java)
> [tapestry-ioc-5.1.0.5.jar:na]
> at
> $BindingFactory_1234622cb20.newBinding($BindingFactory_1234622cb20.java)
> [tapestry-ioc-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.internal.services.BindingSourceImpl.newBinding(BindingSourceImpl.java:81)
> [tapestry-core-5.1.0.5.jar:na]
> ... 105 common frames omitted
> Caused by: java.lang.ArrayIndexOutOfBoundsException: 1
> at
> org.apache.tapestry5.ioc.internal.util.GenericsUtils.extractGenericReturnType(GenericsUtils.java:75)
> [tapestry-ioc-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.ioc.internal.services.ClassPropertyAdapterImpl.<init>(ClassPropertyAdapterImpl.java:47)
> [tapestry-ioc-5.1.0.5.jar:na]
> at
> org.apache.tapestry5.ioc.internal.services.PropertyAccessImpl.buildAdapter(PropertyAccessImpl.java:92)
> [tapestry-ioc-5.1.0.5.jar:na]
> ... 119 common frames omitted
> Everything works fine if I expose my page property as superclass such as :
> public TimeRangedReservationSubrequest getTimeRangedReservationSubrequest()
> return openReservationSubrequest;
> }
> and use
> ${timeRangedReservationSubrequest.timeRange}
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