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Subject: Re: Passing additional parameters through to CPE components
From: james.d.baker@gmail.com
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Date: Thu, 24 Jul 2014 20:22:36 +0100
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To: user@uima.apache.org

But you can only override something you=92ve predefined. I want to =
specify something that I can=92t predefine...


On 24 Jul 2014, at 18:55, Eddie Epstein <eaepstein@gmail.com> wrote:

> Right, the only way for "encompassing" descriptors (like aggregates or
> CPE)  to effect configuration parameters is via overrides.
>=20
> Eddie
>=20
>=20
> On Thu, Jul 24, 2014 at 11:31 AM, <james.d.baker@gmail.com> wrote:
>=20
>> I think you=92ve misunderstood my question - I=92m not asking whether =
I can
>> override defined parameters, I=92m asking if I can provide additional
>> configuration parameters that aren=92t defined in a descriptor file. =
Let me
>> give an example:
>>=20
>> MyCollectionReader.xml defines the following properties:
>>        folder [String] - The folder to process files from
>>        classname [String] - The qualified class name of a class
>> implementing my ContentExtractor interface
>>=20
>> MyCpe.xml uses MyCollectionReader.xml and provides the following
>> properties, including some that MyContentExtractor uses but aren=92t =
defined
>> above:
>>        folder - /opt/test
>>        classname - test.MyContentExtractor
>>        baseUrl - http://www.example.com
>>=20
>> The parameter baseUrl, although it is specified in the MyCpe.xml =
file,
>> isn=92t defined in MyCollectionReader.xml because it is specific to =
the
>> MyContentExtractor class and not necessarily known at design time. =
However,
>> UIMA isn=92t passing it through to UimaContext presumably because it =
isn=92t
>> defined in the MyCollectionReader.xml.
>>=20
>> Hope that helps clear it up.
>>=20
>>=20
>> On 24 Jul 2014, at 14:51, Eddie Epstein <eaepstein@gmail.com> wrote:
>>=20
>>> A CPE descriptor can override configuration parameters defined in =
any
>>> integrated components.
>>> Documentation a little bit below
>>>=20
>> =
http://uima.apache.org/d/uimaj-2.6.0/references.html#ugr.ref.xml.cpe_descr=
iptor.descriptor.cas_processors.individual
>>> 3.6.1.2. <configurationParameterSettings> Element
>>>=20
>>> This element provides a way to override the contained Analysis =
Engine's
>>> parameters settings. Any entry specified here must already be =
defined;
>>> values specified replace the corresponding values for each =
parameter. For
>>> Cas Processors, this mechanism is only available when they are =
deployed
>> in =93
>>> integrated=94 mode. For Collection Readers and Initializers, it =
always is
>>> available.
>>>=20
>>>=20
>>>=20
>>> On Thu, Jul 24, 2014 at 8:19 AM, James Baker =
<james.d.baker@gmail.com>
>>> wrote:
>>>=20
>>>> Is it possible to provide additional configuration parameters in a =
CPE
>>>> descriptor XML file that aren't specified in the =
annotator/collection
>>>> reader descriptor XML file?
>>>>=20
>>>> I have a collection reader that accepts the classname of a class to =
use
>> to
>>>> do the content extraction as a parameter. This works fine, but I'd =
like
>> to
>>>> be able to pass additional parameters to the content extractor via =
the
>> XML.
>>>> The parameters will be dependant on the content extractor though, =
so I
>>>> can't specify them in the collection reader descriptor. For =
example,
>>>> ContentExtractor1 might need a parameter 'encoding', and
>> ContentExtractor2
>>>> might need a parameter 'baseUrl'.
>>>>=20
>>>> I have been able to achieve this with UimaFIT by creating the =
collection
>>>> reader without the XML and injecting the parameters, but when I try =
and
>> do
>>>> it from the XML file the parameters don't make it through to my =
content
>>>> extractor (I pass the UimaContext object through to the content
>> extractor).
>>>> I suspect they might be being ignored by UIMA because they aren't =
in the
>>>> descriptor. How can I work around this?
>>>>=20
>>>> Thanks,
>>>> James
>>>>=20
>>=20
>>=20