org.apache.hadoop.hive.ql.exec.persistence

Interface AbstractRowContainer<ROW>

All Known Subinterfaces:

MapJoinRowContainer

All Known Implementing Classes:

FlatRowContainer, MapJoinEagerRowContainer, PTFRowContainer, RowContainer, UnwrapRowContainer

public interface AbstractRowContainer<ROW>

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	AbstractRowContainer.RowIterator<ROW>

Method Summary

Modifier and Type	Method and Description
void	addRow(ROW t) add a row into the RowContainer
void	clearRows() Remove all elements in the RowContainer.
boolean	hasRows()
boolean	isSingleRow()
int	rowCount()
AbstractRowContainer.RowIterator<ROW>	rowIter()

Method Detail

rowIter

AbstractRowContainer.RowIterator<ROW> rowIter()
                                       throws HiveException

Throws:

HiveException

addRow

void addRow(ROW t)
     throws HiveException

add a row into the RowContainer

Parameters:

t - row

Throws:

HiveException

hasRows

boolean hasRows()
         throws HiveException

Returns:

whether the row container has at least 1 row. NOTE: Originally we named this isEmpty, but that name conflicted with another interface.

Throws:

HiveException

isSingleRow

boolean isSingleRow()
             throws HiveException

Returns:

whether the row container has 1 row.

Throws:

HiveException

rowCount

int rowCount()
      throws HiveException

Returns:

number of elements in the RowContainer

Throws:

HiveException

clearRows

void clearRows()
        throws HiveException

Remove all elements in the RowContainer.

Throws:

HiveException