Am 10.06.2012 um 19:50 schrieb Richard Eckart de Castilho: > I guess another option should be to change CollectionReaderAdapter to create > any missing initial view for sofa-unaware readers. That would not have any > side other component type and it would solve the problem for my use-case as > well. The problem is, that doesn't work, because the > PrimitiveAnalysisEngine_impl.classAnalysisComponentProcess() already tries to > access the mapped view and fails. Changing that to test if the > mAnalysisComponent is a sofa-unaware CollectionReaderAdapter and creating a > new view only in that case looks rather like a hack to me, although it would > probably resolve the situation. I didn't test that yet, but if you think it > reasonable, I can check it.
Actually, the exception triggered by PrimitiveAnalysisEngine_impl.classAnalysisComponentProcess() when accessing the non-existing mapped CAS seems completely redundant, because if the analysis engine delegate is a sofa-unaware CasMultiplier or CollectionReader(Adapter) that doesn't actually use its input CAS, it doesn't matter at all a that point that the mapped view does not exist. It's enough if the mapped initial view is set up in any new CAS created for the CasMultiplier/CollectionReader. So, there are many possible ways. I personally don't find to very attractive to change the CollectionReaderDescription because I think that has quite some overhead. Even if that was done, the problem would probably remain for mapped CasMultipliers. I like it that UIMA internally treats all components equally, so I would prefer doing something that this also works out well when sofa mappings are used on components that produce new CASes and potentially do not at all make used of the input CAS. -- Richard -- ------------------------------------------------------------------- Richard Eckart de Castilho Technical Lead Ubiquitous Knowledge Processing Lab (UKP-TUD) FB 20 Computer Science Department Technische Universität Darmstadt Hochschulstr. 10, D-64289 Darmstadt, Germany phone [+49] (0)6151 16-7477, fax -5455, room S2/02/B117 [email protected] www.ukp.tu-darmstadt.de Web Research at TU Darmstadt (WeRC) www.werc.tu-darmstadt.de -------------------------------------------------------------------
