# Package org.apache.uima.cas_data

- Interface Summary
  Interface | Description
  --- | ---
  CasData | Interface for directly accessing and manipulating the data in the Common Analysis Structure.
  FeatureStructure | An object in the CAS.
  FeatureValue | The base interface for the value of a feature.
  PrimitiveArrayFS | A subtype of FeatureStructure that represents an array of primitive values (Strings, int, or floats).
  PrimitiveValue | Represents a primitive feature value - a string, integer, or float.
  ReferenceArrayFS | A subtype of FeatureStructure that represents an array of primitive values (Strings, int, or floats).
  ReferenceValue | A FeatureValue that represents a reference, via ID, to another FeatureStructure.

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