org.apache.uima.analysis_component

## Class Annotator_ImplBase

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

- All Implemented Interfaces:
    AnalysisComponent
  Direct Known Subclasses:
    CasAnnotator_ImplBase, JCasAnnotator_ImplBase

      public abstract class Annotator_ImplBase
      extends AnalysisComponent_ImplBase

  Base class for all annotators. An Annotator is an `AnalysisComponent` that may modify its input CAS, but never creates any new CASes as output. Typically, annotators should not extend this class directly, but instead extend `CasAnnotator_ImplBase` or `JCasAnnotator_ImplBase` depending on which CAS interface they wish to use.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `Annotator_ImplBase()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `int` | `getCasInstancesRequired()` Returns 0, since annotators are not allowed to create new CAS instances.
    `boolean` | `hasNext()` Returns false, since annotators are not allowed to create new CAS instances.
    `AbstractCas` | `next()` Throws a UIMA_IllegalStateException, since annotators are not allowed to create new CAS instances.

    - ### 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`

    - ### Methods inherited from interface org.apache.uima.analysis_component.AnalysisComponent

      `getRequiredCasInterface, process`

- - ### Constructor Detail

    - #### Annotator_ImplBase

          public Annotator_ImplBase()

  - ### Method Detail

    - #### getCasInstancesRequired

          public final int getCasInstancesRequired()

      Returns 0, since annotators are not allowed to create new CAS instances. Only CasMultipliers are allowed to do this.
      Returns:
        the number of CAS instances required by this AnalysisComponent.

    - #### hasNext

          public final boolean hasNext()
                                throws AnalysisEngineProcessException

      Returns false, since annotators are not allowed to create new CAS instances. Only CasMultipliers are allowed to do this.
      Returns:
        true if this AnalysisComponent has another CAS to output, false if not.
      Throws:
        `AnalysisEngineProcessException` - if a problem occurs during processing

    - #### next

          public final AbstractCas next()
                                 throws AnalysisEngineProcessException

      Throws a UIMA_IllegalStateException, since annotators are not allowed to create new CAS instances. Only CasMultipliers are allowed to do this.
      Returns:
        the next output CAS.
      Throws:
        `AnalysisEngineProcessException` - if a problem occurs during processing

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