org.h2.result

Class FetchedResult

java.lang.Object

org.h2.result.FetchedResult

All Implemented Interfaces:

java.lang.AutoCloseable, ResultInterface

Direct Known Subclasses:

LazyResult, ResultRemote

public abstract class FetchedResult
extends java.lang.Object
implements ResultInterface

Abstract fetched result.

Method Summary

Modifier and Type	Method and Description
ResultInterface	createShallowCopy(Session targetSession) Create a shallow copy of the result set.
Value[]	currentRow() Get the current row.
long	getRowId() Get the current row id, starting with 0.
boolean	isAfterLast() Check if the current position is after last row.
boolean	needToClose() Check if this result set should be closed, for example because it is buffered using a temporary file.
boolean	next() Go to the next row.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.h2.result.ResultInterface

close, getAlias, getColumnName, getColumnType, getFetchSize, getNullable, getRowCount, getSchemaName, getTableName, getVisibleColumnCount, hasNext, isClosed, isIdentity, isLazy, reset, setFetchSize

Method Detail

currentRow

public final Value[] currentRow()

Description copied from interface: ResultInterface

Get the current row.

Specified by:

currentRow in interface ResultInterface

Returns:

the row

next

public final boolean next()

Description copied from interface: ResultInterface

Go to the next row.

Specified by:

next in interface ResultInterface

Returns:

true if a row exists

isAfterLast

public final boolean isAfterLast()

Description copied from interface: ResultInterface

Check if the current position is after last row.

Specified by:

isAfterLast in interface ResultInterface

Returns:

true if after last

getRowId

public final long getRowId()

Description copied from interface: ResultInterface

Get the current row id, starting with 0. -1 is returned when next() was not called yet.

Specified by:

getRowId in interface ResultInterface

Returns:

the row id

needToClose

public final boolean needToClose()

Description copied from interface: ResultInterface

Check if this result set should be closed, for example because it is buffered using a temporary file.

Specified by:

needToClose in interface ResultInterface

Returns:

true if close should be called.

createShallowCopy

public final ResultInterface createShallowCopy(Session targetSession)

Description copied from interface: ResultInterface

Create a shallow copy of the result set. The data and a temporary table (if there is any) is not copied.

Specified by:

createShallowCopy in interface ResultInterface

Parameters:

targetSession - the session of the copy

Returns:

the copy if possible, or null if copying is not possible