CloseableShapeshifter (druid-processing 32.0.0 API)

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

AbstractFrameRowsAndColumns, ColumnBasedFrameRowsAndColumns, CursorFactoryRowsAndColumns, QueryableIndexRowsAndColumns, RowBasedFrameRowsAndColumns
```
public interface CloseableShapeshifter
extends Closeable
```
A CloseableShapeshifter is an interface created to allow Segments to be used from as(Class), but also to be able to ensure that any resource used by the object returned from the as(Class) method have proper management of their lifecycle. This was initially introduced in order to make it possible for Segment to become a RowsAndColumns without needing to add extra close() methods to RowsAndColumns.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`<T> T`	`as(Class<T> clazz)`	Asks the Object to return itself as a concrete implementation of a specific interface.

Methods inherited from interface java.io.Closeable
close

- Method Detail
  - as
```
@Nullable
<T> T as(@Nonnull
         Class<T> clazz)
```
    Asks the Object to return itself as a concrete implementation of a specific interface. The interface asked for will tend to be a semantically-meaningful interface.
    
    Type Parameters:
    
    T - The interface that the calling code wants a concrete implementation of
    
    Parameters:
    
    clazz - A class object representing the interface that the calling code wants a concrete implementation of
    
    Returns:
    
    A concrete implementation of the interface, or null if there is no meaningful optimization to be had through a local implementation of the interface.