Hi Carsten, I've never used it, but according to the documentation you can do this with a flow controller. The bad thing is, Richard told me a while ago that it is not so easy to build your own flow controller.
Cheers, Armin -----Ursprüngliche Nachricht----- Von: Carsten Schnober [mailto:schno...@ukp.informatik.tu-darmstadt.de] Gesendet: Donnerstag, 6. November 2014 14:55 An: user@uima.apache.org Betreff: Filter Cas from UIMA fit pipeline Hi, I wonder whether there is a recommended way to remove certain (J)Cas' (i.e. documents) from a pipeline after reading. The scenario in my case is that I use a standard reader (BinaryCasReader) which returns many documents. I only want a subset of these documents to be processed by the following pipeline (comprising a segmenter, a writer and some other engines), subject to a certain value in a custom annotation. The initial intuition would be to use/implement a reader that only selects those documents that fulfil the given condition. In my case that would mean, however, that I'd need to implement a new Reader extending the BinaryCasReader by the described functionality. From a high-level view at least, this seems much more complicated than just removing documents from the pipeline. Can I avoid that effort somehow without breaking conventions? Thanks! Carsten -- Carsten Schnober, M.Sc. Doctoral Researcher Ubiquitous Knowledge Processing (UKP Lab) FB 20 Computer Science Department Technische Universität Darmstadt Hochschulstr. 10, D-64289 Darmstadt, Germany phone (0)6151 16-6227, room S2/02/B111 www.ukp.tu-darmstadt.de
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