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From: Baptiste Gaillard <b_gaillard@hotmail.com>
To: <uima-user@incubator.apache.org>
Subject: Instatiate an aggregate AE having reference to a UriSpecifier
Date: Tue, 31 Mar 2009 14:51:55 +0000
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Hi=2C=20

On our project we are currently trying to create OSGI Bundle to integrate U=
IMA components.=20
For the moment it works well but I have an instantiation problem using an a=
ggregate AE which reference a Vinci descriptor.=20

He is what i'm doing:=20

-- Main descriptor of the aggregate AE (X.xml) --
<?xml version=3D"1.0" encoding=3D"UTF-8"?>
  <taeDescription xmlns=3D"http://uima.apache.org/resourceSpecifier">
  <frameworkImplementation>org.apache.uima.java</frameworkImplementation>
  <primitive>false</primitive>

  <delegateAnalysisEngineSpecifiers>
    <delegateAnalysisEngine key=3D"A">
      <import location=3D"A.xml"/>
    </delegateAnalysisEngine>
    <delegateAnalysisEngine key=3D"B">
      <import location=3D"B.xml"/>
    </delegateAnalysisEngine>                       =20
  </delegateAnalysisEngineSpecifiers>
 =20
  <analysisEngineMetaData>

  <name>XXX</name>

  <description>slmkjhsqldkjfhldfjkh</description>
  <version>1.0</version>
  <vendor>XXX</vendor>
  <configurationParameters/>
  <configurationParameterSettings/>
 =20
  <flowConstraints>
    <fixedFlow>
      <node>B</node>
      <node>A</node>
    </fixedFlow>
  </flowConstraints>

  <typePriorities/>
  <fsIndexCollection/>

  <capabilities>
    <capability>
      <inputs/>
      <outputs/>
      <languagesSupported/>
    </capability>
  </capabilities>

  <operationalProperties>
    <modifiesCas>true</modifiesCas>
    <multipleDeploymentAllowed>true</multipleDeploymentAllowed>
    <outputsNewCASes>false</outputsNewCASes>
    </operationalProperties>
  </analysisEngineMetaData>

  <resourceManagerConfiguration/>

</taeDescription>

-- Descriptor B.xml describes a UriSpecifier --
<?xml version=3D"1.0" encoding=3D"UTF-8"?>
<uriSpecifier xmlns=3D"http://uima.apache.org/resourceSpecifier">
    <resourceType>AnalysisEngine</resourceType>
    <uri>XXX</uri>
    <protocol>Vinci</protocol>
</uriSpecifier>


Then in Java i'm using this code to instantiate the Aggregate AE (uimaCompo=
nentDescriptorPath is the path to the main component descriptor=2C uima) :


        ConfigurationManager configurationManager =3D UIMAFramework.newConf=
igurationManager()=3B

        try
        {
            // uimaComponentDescriptorPath is the path to the main componen=
t descriptor of the aggregate (X.xml)
            ResourceSpecifier uimaComponentDescription =3D UIMAFramework.ge=
tXMLParser().parseResourceSpecifier(new File(uimaComponentDescriptorPath))=
=3B

            // uimaComponentRootPath is the path to the root directory of t=
he aggregate AE
            ResourceManager resourceManager =3D UIMAFramework.newDefaultRes=
ourceManager()=3B
            resourceManager.setDataPath(uimaComponentRootPath)=3B

            // Component classPath is computed using an utility function
            String uimaComponentClassPath =3D this.buildUimaComponentClassP=
ath(uimaComponentRootPath)=3B
            resourceManager.setExtensionClassPath(this.getClass().getClassL=
oader()=2C uimaComponentClassPath=2C true)=3B
                   =20
            AnalysisEngine analysisEngine =3D UIMAFramework.produceAnalysis=
Engine(this.uimaComponentDescription=2C resourceManager=2C null)=3B
        }
        catch (Exception e)
        {

        }

The line AnalysisEngine analysisEngine =3D UIMAFramework.produceAnalysisEng=
ine(this.uimaComponentDescription=2C resourceManager=2C null)=3B throws an =
exception :=20

org.apache.uima.resource.ResourceInitializationException: The Resource Fact=
ory does not know how to create a resource of class org.apache.uima.analysi=
s_engine.AnalysisEngine from the given ResourceSpecifier. (Descriptor: file=
:/D:/workspace_npf/component/desc/B.xml)
    at org.apache.uima.UIMAFramework.produceResource(UIMAFramework.java:261=
)
    at org.apache.uima.UIMAFramework.produceAnalysisEngine(UIMAFramework.ja=
va:352)
    at org.apache.uima.analysis_engine.asb.impl.ASB_impl.setup(ASB_impl.jav=
a:243)
    at org.apache.uima.analysis_engine.impl.AggregateAnalysisEngine_impl.in=
itASB(AggregateAnalysisEngine_impl.java:413)
    at org.apache.uima.analysis_engine.impl.AggregateAnalysisEngine_impl.in=
itializeAggregateAnalysisEngine(AggregateAnalysisEngine_impl.java:361)
    at org.apache.uima.analysis_engine.impl.AggregateAnalysisEngine_impl.in=
itialize(AggregateAnalysisEngine_impl.java:183)
    at org.apache.uima.impl.AnalysisEngineFactory_impl.produceResource(Anal=
ysisEngineFactory_impl.java:94)
    at org.apache.uima.impl.CompositeResourceFactory_impl.produceResource(C=
ompositeResourceFactory_impl.java:62)
    at org.apache.uima.UIMAFramework.produceResource(UIMAFramework.java:258=
)
    at org.apache.uima.UIMAFramework.produceResource(UIMAFramework.java:303=
)
    at org.apache.uima.UIMAFramework.produceAnalysisEngine(UIMAFramework.ja=
va:383)

So this error indicate that UIMA can't find the a ResourceFactory to create=
 an AnalysisEngine from a <uriSpecifier>....</uriSpecifier> descriptor.=20
What is the problem in the source code ? I think i've missed a step because=
 this Aggregate AE is working in a CPE.=20

Thanks=2C=20

Baptiste Gaillard



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