org.apache.uima.analysis_component
Class CasAnnotator_ImplBase

java.lang.Object
  org.apache.uima.analysis_component.AnalysisComponent_ImplBase
      org.apache.uima.analysis_component.Annotator_ImplBase
          org.apache.uima.analysis_component.CasAnnotator_ImplBase

All Implemented Interfaces:

AnalysisComponent

public abstract class CasAnnotator_ImplBase
extends Annotator_ImplBase

Base class to be extended by Annotators that use the CAS interface. An Annotator is an AnalysisComponent that may modify its input CAS, but never creates any new CASes as output.

Constructor Summary

CasAnnotator_ImplBase()

Method Summary

Class<CAS>	getRequiredCasInterface() Returns the specific CAS interface that this AnalysisComponent requires the framework to pass to its AnalysisComponent.process(AbstractCas) method.
void	process(AbstractCas aCAS) Inputs a CAS to the AnalysisComponent.
abstract void	process(CAS aCAS) Inputs a CAS to the AnalysisComponent.
void	typeSystemInit(TypeSystem aTypeSystem) Informs this annotator that the CAS TypeSystem has changed.

Methods inherited from class org.apache.uima.analysis_component.Annotator_ImplBase

getCasInstancesRequired, hasNext, next

Methods inherited from class org.apache.uima.analysis_component.AnalysisComponent_ImplBase

batchProcessComplete, collectionProcessComplete, destroy, getContext, getResultSpecification, initialize, reconfigure, setResultSpecification

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CasAnnotator_ImplBase

public CasAnnotator_ImplBase()

Method Detail

getRequiredCasInterface

public Class<CAS> getRequiredCasInterface()

Description copied from interface: AnalysisComponent

Returns the specific CAS interface that this AnalysisComponent requires the framework to pass to its AnalysisComponent.process(AbstractCas) method.

Returns:

the required CAS interface. This must specify a subtype of AbstractCas.

process

public final void process(AbstractCas aCAS)
                   throws AnalysisEngineProcessException

Description copied from interface: AnalysisComponent

Inputs a CAS to the AnalysisComponent. The AnalysisComponent "owns" this CAS until such time as AnalysisComponent.hasNext() is called and returns false or until process is called again (see class description).

Parameters:

aCAS - A CAS that this AnalysisComponent should process. The framework will ensure that aCAS implements the specific CAS interface specified by the AnalysisComponent.getRequiredCasInterface() method.

Throws:

AnalysisEngineProcessException - if a problem occurs during processing

process

public abstract void process(CAS aCAS)
                      throws AnalysisEngineProcessException

Inputs a CAS to the AnalysisComponent. This method should be overriden by subclasses to perform analysis of the CAS.

Parameters:

aCAS - A CAS that this AnalysisComponent should process.

Throws:

AnalysisEngineProcessException - if a problem occurs during processing

typeSystemInit

public void typeSystemInit(TypeSystem aTypeSystem)
                    throws AnalysisEngineProcessException

Informs this annotator that the CAS TypeSystem has changed. The Analysis Engine calls this method immediately following the call to AnalysisComponent_ImplBase.initialize(org.apache.uima.UimaContext), and will call it again whenever the CAS TypeSystem changes.

In this method, the Annotator should use the TypeSystem to resolve the names of Type and Features to the actual Type and Feature objects, which can then be used during processing.

Throws:

AnalysisEngineProcessException - if the provided type system is missing types or features required by this annotator