[ http://jira.andromda.org/browse/OCL-11?page=comments#action_11364 ]
     
Chad Brandon commented on OCL-11:
---------------------------------

I just fixed some of the logic where the null pointer possibly could have 
occured, can you get the next CC build and try again?  If you still get it, can 
you attach the model that causes it so I can duplicate?  If it works, can you 
let me know so I can close this issue?

> NullPointerException at at 
> org.andromda.translation.ocl.validation.OCLCollections.first(OCLCollections.java:382)
> ----------------------------------------------------------------------------------------------------------------
>
>          Key: OCL-11
>          URL: http://jira.andromda.org/browse/OCL-11
>      Project: OCL Translation
>         Type: Bug
>   Components: AndroMDA Validation
>     Versions: 3.0RC2
>  Environment: Windows XP Pro, Java(TM) 2 (build 1.5.0_02-b09), Maven 1.0.2, 
> AndroMDA 3.0-RC2-20050407061204
>     Reporter: Sami Ekblad
>     Assignee: Chad Brandon

>
> I browsed the code for possible reason in function objectToList(..), and ran 
> into this:
>   653 :                         if (!(object instanceof List))
>   654 :                         {
>   655 :                         object = new ArrayList(collection);
>   656 :                         }
>   657 :                         list = (List)collection;
> The variable object is assigned a new arraylist, but it is never used. 
> However, this does not explain the NPE.
> ------- AndroMDA Exception Recording -------
> Version ........: 3.0-RC2-20050407061204
> Error ..........: Error performing ModelProcessor.process with model(s) --> 
> 'file:C:/WORK/WORKSPACES/old-workspace/TYVI/tyvi/mda/src/uml/TYVIModel.xmi'
> Build ..........: 2005-04-07 06:12:04
> Build System ...: Linux-2.6.10-1.770_FC3
> Build JDK ......: Sun Microsystems Inc.-1.4.2_07-b05
> Build Builder ..: amartinwest
> Run System .....: Windows XP5.1
> Run JDK ........: Sun Microsystems Inc.1.4.2_07-b05
> Main Exception .: Failed to construct a meta facade of type 'class 
> org.andromda.cartridges.hibernate.metafacades.HibernateEntityLogicImpl' with 
> mappingObject of type --> 'class org.omg.uml.foundation.core.UmlClass$Impl'
> Root Exception .: java.lang.NullPointerException
> java.lang.NullPointerException
>       at 
> org.andromda.translation.ocl.validation.OCLCollections.first(OCLCollections.java:382)
>       at 
> org.andromda.cartridges.hibernate.metafacades.HibernateEntityLogic.validateInvariants(HibernateEntityLogic.java:1810)
>       at 
> org.andromda.core.metafacade.MetafacadeBase.validate(MetafacadeBase.java:95)
>       at 
> org.andromda.core.metafacade.MetafacadeFactory.createMetafacade(MetafacadeFactory.java:223)
>       at 
> org.andromda.core.metafacade.MetafacadeFactory.createMetafacade(MetafacadeFactory.java:132)
>       at 
> org.andromda.core.metafacade.MetafacadeBase.shieldedElement(MetafacadeBase.java:141)
>       at 
> org.andromda.metafacades.uml14.AttributeFacadeLogic.getOwner(AttributeFacadeLogic.java:501)
>       at 
> org.andromda.metafacades.uml14.AttributeFacadeLogicImpl.handleGetName(AttributeFacadeLogicImpl.java:266)
>       at 
> org.andromda.metafacades.uml14.EntityAttributeLogicImpl.handleGetName(EntityAttributeLogicImpl.java:38)
>       at 
> org.andromda.metafacades.uml14.ModelElementFacadeLogic.getName(ModelElementFacadeLogic.java:126)
>       at sun.reflect.GeneratedMethodAccessor113.invoke(Unknown Source)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>       at java.lang.reflect.Method.invoke(Method.java:324)
> [...Output truncated...]

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