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Subject: Re: Change an <externalResource> <fileResourceSpecifier> <fileUrl> at
 run-time
From: Richard Eckart de Castilho <rec@apache.org>
In-Reply-To: <012301d17fd5$9cd4ac00$d67e0400$@gnoetics.com>
Date: Sat, 19 Mar 2016 22:25:44 +0100
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Message-Id: <6C4A27F4-2F90-427E-9283-E4EA7906B720@apache.org>
References: <012301d17fd5$9cd4ac00$d67e0400$@gnoetics.com>
To: user@uima.apache.org
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Hi,

you might find this interesting (although I haven't used that in a long =
time):

=
https://uima.apache.org/d/uimaj-current/references.html#ugr.ref.xml.compon=
ent_descriptor.aes.environment_variable_references

Also, after you a have parser the specifier in the last line of your =
code,
you can traverse it, locate the element you wish to change and simply =
change
it at runtime. In that case it doesn't matter what the XML file =
contains.

The Java object structure is very similar to the XML structure. It may =
be a=20
bit verbose to actually get to the point where you want to go and =
*maybe*
you'll have to cast some interfaces to their implementations to get =
access
to setters, but in general it should work.

Cheers,

-- Richard

> On 16.03.2016, at 23:46, D. Heinze <dheinze@gnoetics.com> wrote:
>=20
> I have separate xml engine descriptor files for set of ConceptMapper
> engines, each using a distinct compiled dictionary file that is =
specified in
> <fileUrl> as shown below.
> The ConceptMapper engines are configured and run programmatically by =
one of
> the engines in the overall UIMA pipeline, where the engines are run
> selectively on data that is constructed on the fly.
> Because all the descriptor files are alike (with stop word =
definitions,
> etc.) except for the <fileUrl> that specifies the dictionary, I would =
like
> to be able to have only one xml descriptor and be able to set a =
version
> number as a Java -D parameter when starting the engine and then add it =
to
> the <fileUrl> name after the ResourceSpecifier is created and before
> produceAnalysisEngine is called.
>=20
> Is this possible?  Or, can <fileUrl> somehow be omitted from the =
descriptor
> file and specified at run-time as a configuration parameter?
> Thanks / Dan=20
>=20
> ENGINE INITIALIZATION CODE:
>      is =3D cls.getClassLoader().getResourceAsStream( desc);=20
>      XMLInputSource source =3D new XMLInputSource( is,  null);=20
>      ResourceSpecifier specifier =3D
> UIMAFramework.getXMLParser().parseResourceSpecifier( source);       =20=

>      ae =3D UIMAFramework.produceAnalysisEngine(specifier);
>=20
> DESCRIPTOR (desc):
> <?xml version=3D"1.0" encoding=3D"UTF-8"?>
> <analysisEngineDescription =
xmlns=3D"http://uima.apache.org/resourceSpecifier">
>  =
<frameworkImplementation>org.apache.uima.java</frameworkImplementation>
>  <primitive>true</primitive>
>=20
> =
<annotatorImplementationName>org.apache.uima.conceptMapper.ConceptMapper</=
an
> notatorImplementationName>
> ...
>  <resourceManagerConfiguration>
>    <externalResources>
>      <externalResource>
>        <name>DictionaryFileName</name>
>        <description>A file containing the dictionary. Modify this URL =
to
> use a different dictionary.</description>
>        <fileResourceSpecifier>
>=20
> =
<fileUrl>com/gnoetics/resources/dictionary/ConceptMapperRoots_dict</fileUr=
l>
>         </fileResourceSpecifier>
>=20
> =
<implementationName>org.apache.uima.conceptMapper.support.dictionaryResour=
ce
> .CompiledDictionaryResource_impl</implementationName>
>      </externalResource>
>    </externalResources>
>    <externalResourceBindings>
>      <externalResourceBinding>
>        <key>DictionaryFile</key>
>        <resourceName>DictionaryFileName</resourceName>
>      </externalResourceBinding>
>    </externalResourceBindings>
>  </resourceManagerConfiguration>
> </analysisEngineDescription>
>=20