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From: Richard Eckart de Castilho <eckart@ukp.informatik.tu-darmstadt.de>
To: "<user@uima.apache.org>" <user@uima.apache.org>
Subject: Re: Dependency injection support in UIMA
Thread-Topic: Dependency injection support in UIMA
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Date: Thu, 22 Nov 2012 13:11:48 +0000
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Hi,

I'm afraid I'm not very familiar with UIMA AS. The context resource and con=
sumer look reasonable to me.

-- Richard

Am 22.11.2012 um 14:06 schrieb Spico Florin <spicoflorin@gmail.com>
:

> Hello!
>    I'm deploying my Consumer in AS environment.  My consumer is a remote
> component with scaleout factor of 3. The consumer tries to get an instanc=
e
> to a triplestore template that has reference to a triplestore pooled
> connection. After profiling the deployed consumer with the given set up, =
I
> found that there is *ONE* instance of SharedResourceObject and also 3
> instances of consumer. Can you please have a look over the following code
> snippets and check if it is UIMA AS compliant?
> package com;
> public class SpringResource implements SharedResourceObject {
>  private AbstractApplicationContext context;
>  private AtomicInteger counter =3D new AtomicInteger();
>=20
>  public void load(DataResource aData) throws
> ResourceInitializationException {
>    context =3D new ClassPathXmlApplicationContext(aData.getUri().toString=
());
>  }
>=20
>  public AbstractApplicationContext getContext() {
>    return context;
>  }
>  public void *registerComponent()* {
>  *  counter.incrementAndGet();
>  *}
>  public void *unregisterComponent()* {
>    if (counter.get() > 0) {
>      *counter.decrementAndGet();*
>    }
>    if (counter.get() =3D=3D 0) {
>      *context.close();*
>    }
>  }
> }//consumer
>=20
> public class SpringCasConsumer extends CasConsumer_ImplBase {
>  public void initialize() throws ResourceInitializationException {
> * *       try {
> *     SpringResource shared =3D (SpringResource)
> getUimaContext().getResourceObject("Resource");
>      shared.getContext().getBean("myBean");
>     shared.registerComponent();
> *   } catch (ResourceAccessException e) {
>    }
> }
>  public void destroy() {
>    *   shared.unregisterComponent();
>       super.destroy();
>    *}
> }
> //deployment descriptor for UIMA AS
>=20
> <analysisEngineDeploymentDescription  xmlns=3D"
> http://uima.apache.org/resourceSpecifier">
>=20
>  <name>Consumer</name>
>   <deployment protocol=3D"jms" provider=3D"activemq">
>    *<casPool numberOfCASes=3D"3"/>
>    *<service>
>      <inputQueue endpoint=3D"ConsumerQueue" brokerURL=3D"${defaultBrokerU=
RL}"/>
>      <topDescriptor>
>       <import location=3D"../../desc/cas_consumer/SpringConsumer.xml"/>
>      </topDescriptor>
>       <analysisEngine>
>         *<scaleout numberOfInstances=3D"3"/>*
>      </analysisEngine>
>    </service>
>  </deployment>
> </analysisEngineDeploymentDescription>
>=20
> Configururation for resource manager:
>=20
> <resourceManagerConfiguration>
>    <externalResources>
>      <externalResource>
>        <name>*springResource*</name>
>        <description/>
>        <fileResourceSpecifier>
>          <fileUrl>file:spring_context.xml</fileUrl>
>        </fileResourceSpecifier>
>        <implementationName>*com.SpringResource*</implementationName>
>      </externalResource>
>    </externalResources>
>    <externalResourceBindings>
>      <externalResourceBinding>
>        <key*>Resource*</key>
>        <resourceName>*springResource*</resourceName>
>      </externalResourceBinding>
>    </externalResourceBindings>
>  </resourceManagerConfiguration>
>=20
> Thank you.
> Regards,
> Florin


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