Hi,
can you provide the full code for your sample pipeline? I think that would make
it easier to help.
With the present information, I can only give some general advice.
- it is not mandatory to have the type system java classes (JCas wrappers)
present in a project if none of your components (Readers, AEs, CCs) use them.
- it is possible to manually load a type system description (TSD) and pass it
to the components. But then the TSD is the second argument to the
createXXXDescription call, e.g.
createEngineDescription(SimpleCC.class, tsd,
SimpleCC.PARAM_OUTPUT_DIR, "…");
- the type systems of all components in a pipeline is automatically merged when
a pipeline is run (e.g. using SimplePipeline.runPipeline). Thus, it would also
work to pass a TSD with all types used in the pipeline only to the reader, but
not to any of the subsequent components.
- alternatively, it is possible to have uimaFIT automatically detect your types
[1]. If you do that, there is no need at all to pass the TSD to the component -
it happens automatically.
createEngineDescription(SimpleCC.class,
SimpleCC.PARAM_OUTPUT_DIR, "…");
- if you want to retrieve annotation from the CAS without using the JCas
wrappers, you can have a look at the CasUtil class. E.g.
CasUtil.select(cas, CasUtil.getType(cas, "my.package.name.MyType"))
Mind, this call works only if "MyType" inherits from the built-in "Annotation"
type. Otherwise, you would use "selectFS" instead of "select".
I would recommend using the CAS/CasUtil only if you want to implement a generic
component that can be configured to work with different types. If your
component is fixed to a certain type system, then using the JCas/JCasUtil is
much more convenient.
-- Richard
[1]
http://uima.apache.org/d/uimafit-current/tools.uimafit.book.html#ugr.tools.uimafit.typesystem
On 23.01.2014, at 06:21, Luca Foppiano <[email protected]> wrote:
> Hi Everybody,
> I'm starting playing with uima-fit and I'm trying to integrate the
> whitespace annotator into my simple pipeline composed by a collection
> reader a simple AE (plays with the text, doesn't annotate) and I want to
> add a whitespace annotator to be applied to the text.
>
> I've download the trunk version of the Whitespace annotator on github, I've
> extracted the type system definition from the descriptor XML and referenced
> it from uimafit. The pipeline worked without crashing.
>
> Now I want to add an AE that takes the annotations and do something with
> that (print them for example).
>
> I could not find a way to work around the fact the type system java class
> were not present in the project, is this a mandatory requirement?
>
> What I've tried is to do something like:
>
> //Get the type autogeneated type system (SentenceAnnotation,
> TokenAnnotation)
> TypeDescription[] types = tsd.getTypes();
>
> [...]
> //..and try to pass them to my annotator
> AnalysisEngineDescription casConsumer =
> AnalysisEngineFactory.createEngineDescription(SimpleCC.class,
> SimpleCC.OUTPUT_DIR_PARAM,
> "/home/lf84914/development/epo/apl/data/out",
> * types, null*);
>
> but then, in the AE's code, I have no idea how to use them.
>
> Any suggestions?
>
> Thank everybody in advance.
> --
> Luca Foppiano
>
> Software Engineer
> +31615253280
> [email protected]
> www.foppiano.org
