org.apache.drill.exec.vector.accessor.writer

Interface AbstractTupleWriter.TupleWriterListener

All Known Implementing Classes:

TupleState, TupleState.DictArrayState, TupleState.DictState, TupleState.MapArrayState, TupleState.MapState, TupleState.RowState, TupleState.SingleDictState, TupleState.SingleMapState

Enclosing class:

AbstractTupleWriter

public static interface AbstractTupleWriter.TupleWriterListener

Listener (callback) to handle requests to add a new column to a tuple (row or map). Implemented and bound by the client code that creates or uses the tuple writer. If no listener is bound, then an attempt to add a column throws an exception.

Method Summary

Modifier and Type	Method and Description
ObjectWriter	addColumn(TupleWriter tuple, ColumnMetadata column)
ObjectWriter	addColumn(TupleWriter tuple, MaterializedField field)
boolean	isProjected(String columnName)

Method Detail

addColumn

ObjectWriter addColumn(TupleWriter tuple,
                       ColumnMetadata column)

addColumn

ObjectWriter addColumn(TupleWriter tuple,
                       MaterializedField field)

isProjected

boolean isProjected(String columnName)