Package org.apache.uima.analysis_component

Class AnalysisComponent_ImplBase

java.lang.Object
org.apache.uima.analysis_component.AnalysisComponent_ImplBase
All Implemented Interfaces:
AnalysisComponent
Direct Known Subclasses:
Annotator_ImplBase, CasMultiplier_ImplBase, JCasMultiplier_ImplBase, UimacppAnalysisComponent
public abstract class AnalysisComponent_ImplBase extends Object implements AnalysisComponent
Implementation base class for AnalysisComponents. Normally developers do not extend this class directly. Instead extend one of the Annotator or CasMultiplier base classes.

This class implements the initialize(UimaContext) method and stores the UimaContext in a private field where it can be accessed via the getContext() method.

This class also provides a "dumb" implementation of the reconfigure() method, which simply calls destroy() followed by initialize(UimaContext). Developers of AnalysisComponents with expensive initialization logic should override this method and provide a more intelligent implementation.

  • Constructor Details

    • AnalysisComponent_ImplBase

      public AnalysisComponent_ImplBase()

  • Method Details

    • initialize

      public void initialize(UimaContext aContext) throws ResourceInitializationException
      Description copied from interface: AnalysisComponent
      Performs any startup tasks required by this component. The framework calls this method only once, just after the AnalysisComponent has been instantiated.

      The framework supplies this AnalysisComponent with a reference to the UimaContext that it will use, for example to access configuration settings or resources. This AnalysisComponent should store a reference to its the UimaContext for later use.

      Specified by:
      initialize in interface AnalysisComponent
      Parameters:
      aContext - Provides access to services and resources managed by the framework. This includes configuration parameters, logging, and access to external resources.
      Throws:
      ResourceInitializationException - if this AnalysisComponent cannot initialize successfully.

    • reconfigure

      public void reconfigure() throws ResourceConfigurationException, ResourceInitializationException
      Notifies this AnalysisComponent that its configuration parameters have changed. This implementation just calls destroy() followed by initialize(UimaContext). Subclasses can override to provide more efficient reconfiguration logic if necessary.
      Specified by:
      reconfigure in interface AnalysisComponent
      Throws:
      ResourceConfigurationException - if the configuration specified for this component is invalid.
      ResourceInitializationException - if this component fails to reinitialize itself based on the new configuration.
      See Also:

    • batchProcessComplete

      public void batchProcessComplete() throws AnalysisEngineProcessException
      Description copied from interface: AnalysisComponent
      Completes the processing of a batch of CASes. The size of a batch is determined based on configuration provided by the application that is using this component. The purpose of batchProcessComplete is to give this AnalysisComponent the change to flush information from memory to persistent storage. In the event of an error, this allows the processing to be restarted from the end of the last completed batch.

      If this component's descriptor declares that it is recoverable, then this component is required to be restartable from the end of the last completed batch.

      Specified by:
      batchProcessComplete in interface AnalysisComponent
      Throws:
      AnalysisEngineProcessException - if this component encounters a problem in flushing its state to persistent storage

    • collectionProcessComplete

      public void collectionProcessComplete() throws AnalysisEngineProcessException
      Description copied from interface: AnalysisComponent
      Notifies this AnalysisComponent that processing of an entire collection has been completed. In this method, this component should finish writing any output relating to the current collection.
      Specified by:
      collectionProcessComplete in interface AnalysisComponent
      Throws:
      AnalysisEngineProcessException - if this component encounters a problem in its end-of-collection processing

    • destroy

      public void destroy()
      Description copied from interface: AnalysisComponent
      Frees all resources held by this AnalysisComponent. The framework calls this method only once, when it is finished using this component.
      Specified by:
      destroy in interface AnalysisComponent

    • setResultSpecification

      public void setResultSpecification(ResultSpecification aResultSpec)
      Sets the Result Specification for this Analysis Component. This implementation just saves the Result Specification to a field, where it can later be accessed by calling getResultSpecification(). An AnalysisComponent implementation may override this method if it would like to do specific processing when its ResultSpecificatin is changed.
      Specified by:
      setResultSpecification in interface AnalysisComponent
      Parameters:
      aResultSpec - the ResultSpecification for this Analysis Component to use.
      See Also:

    • getContext

      protected final UimaContext getContext()
      Gets the UimaContext for this AnalysisComponent. This provides access to configuration parameters and external resources.
      Returns:
      the UimaContext for this AnalysisComponent

    • getLogger

      protected Logger getLogger()
      Returns:
      the Logger associated with this uima Analysis Engine component

    • getResultSpecification

      protected ResultSpecification getResultSpecification()
      Gets the ResultSpecification for this AnalysisComponent. The ResultSpecification is a set of types and features that this AnalysisComponent is asked to produce. An Analysis Component may (but is not required to) optimize its processing by omitting the generation of any types or features that are not part of the ResultSpecification.
      Returns:
      the ResultSpecification for this Analysis Component to use.