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From Jens Grivolla <j+...@grivolla.net>
Subject Re: run existing AE instance on different view
Date Mon, 16 Jul 2018 15:48:38 GMT
Hi Marshall,

as far as I can tell all the mapping methods described there need to be
applied *before* instantiating an AE. The problem is that while I can use
CAS.getView(...) or JCas.getView(...) to access the desired view I find no
way to call the process() method of an existing AE instance on it.

One application we have right now is having a pretty memory-heavy pipeline
loaded into memory that we need to apply to texts from different sources
(typically as a web service). Depending on the source we may need to first
apply translation, cleanup, etc., all of which create new views on which to
operate. We are not using CPE or any other "standard" execution engine but
rather create the initial JCas from the incoming text and then apply
aggregate engines (using their process() method) to that JCas as needed.


On Mon, Jul 9, 2018 at 10:46 PM, Marshall Schor <msa@schor.com> wrote:

> Hi,
> Is anything in
> https://uima.apache.org/d/uimaj-2.10.2/tutorials_and_
> users_guides.html#ugr.tug.mvs.name_mapping_application
> helpful?
> If not, could you add some details that says why not?
> -Marshall
> On 7/5/2018 8:52 AM, Jens Grivolla wrote:
> > Hi,
> >
> > I'm trying to run an already instantiated AE on a view other than
> > _InitialView. Unfortunately, I can't just call process() on the desired
> > view, as there is a call to Util.getStartingView(...)
> > in PrimitiveAnalysisEngine_impl that forces it back to _InitialView.
> >
> > The view mapping methods I found (e.g. using and AggregateBuilder) work
> on
> > AE descriptions, so I would need to create additional instances (with the
> > corresponding memory overhead). Is there a way to remap/rename the views
> in
> > a JCas before calling process() so that the desired view is seen as the
> > _InitialView? It looks like CasCopier.copyCasView(..) could maybe be used
> > for this, but it doesn't feel quite right.
> >
> > Best,
> > Jens
> >

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