org.h2.result

Interface ResultExternal

All Known Implementing Classes:

ResultTempTable

public interface ResultExternal

This interface is used to extend the LocalResult class, if data does not fit in memory.

Method Summary

Modifier and Type	Method and Description
int	addRow(Value[] values) Add a row to this object.
int	addRows(java.util.ArrayList<Value[]> rows) Add a number of rows to the result.
void	close() Close this object and delete the temporary file.
boolean	contains(Value[] values) Check if the given row exists in this object.
ResultExternal	createShallowCopy() Create a shallow copy of this object if possible.
void	done() This method is called after all rows have been added.
Value[]	next() Get the next row from the result.
int	removeRow(Value[] values) Remove the row with the given values from this object if such a row exists.
void	reset() Reset the current position of this object.

Method Detail

reset

void reset()

Reset the current position of this object.

next

Value[] next()

Get the next row from the result.

Returns:

the next row or null

addRow

int addRow(Value[] values)

Add a row to this object.

Parameters:

values - the row to add

Returns:

the new number of rows in this object

addRows

int addRows(java.util.ArrayList<Value[]> rows)

Add a number of rows to the result.

Parameters:

rows - the list of rows to add

Returns:

the new number of rows in this object

done

void done()

This method is called after all rows have been added.

close

void close()

Close this object and delete the temporary file.

removeRow

int removeRow(Value[] values)

Remove the row with the given values from this object if such a row exists.

Parameters:

values - the row

Returns:

the new row count

contains

boolean contains(Value[] values)

Check if the given row exists in this object.

Parameters:

values - the row

Returns:

true if it exists

createShallowCopy

ResultExternal createShallowCopy()

Create a shallow copy of this object if possible.

Returns:

the shallow copy, or null