org.apache.druid.frame.read.columnar

Interface FrameColumnReader

All Known Implementing Classes:

ComplexFrameColumnReader, DoubleFrameColumnReader, FloatFrameColumnReader, LongFrameColumnReader, StringFrameColumnReader

public interface FrameColumnReader

Embeds the logic to read a specific column from frames with a specific RowSignature. Stateless and immutable, so it can be shared between multiple frame readers as long as all frames have the same signature.

Method Summary

Modifier and Type	Method and Description
ColumnPlus	readColumn(Frame frame) Returns a column reference for the provided frame.

Method Detail

readColumn

ColumnPlus readColumn(Frame frame)

Returns a column reference for the provided frame.