org.h2.result

接口 ResultExternal

所有已知实现类:

ResultTempTable

public interface ResultExternal

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

方法概要

限定符和类型	方法和说明
int	addRow(Value[] values) Add a row to this object.
int	addRows(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.

方法详细资料

reset

void reset()

Reset the current position of this object.

next

Value[] next()

Get the next row from the result.

返回:

the next row or null

addRow

int addRow(Value[] values)

Add a row to this object.

参数:

values - the row to add

返回:

the new number of rows in this object

addRows

int addRows(ArrayList<Value[]> rows)

Add a number of rows to the result.

参数:

rows - the list of rows to add

返回:

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.

参数:

values - the row

返回:

the new row count

contains

boolean contains(Value[] values)

Check if the given row exists in this object.

参数:

values - the row

返回:

true if it exists

createShallowCopy

ResultExternal createShallowCopy()

Create a shallow copy of this object if possible.

返回:

the shallow copy, or null