| Interface | Description | 
|---|---|
| TypeReader | 
| Class | Description | 
|---|---|
| BatchReader | The top level interface that the reader uses to read the columns from the
 ORC file. | 
| PrimitiveBatchReader | |
| StructBatchReader | Handles the Struct rootType for batch handling. | 
| Enum | Description | 
|---|---|
| TypeReader.ReaderCategory | |
| TypeReader.ReadPhase | 
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