org.hibernate.internal

Class FetchingScrollableResultsImpl

java.lang.Object

org.hibernate.internal.AbstractScrollableResults

org.hibernate.internal.FetchingScrollableResultsImpl

All Implemented Interfaces:

Closeable, AutoCloseable, ScrollableResults

public class FetchingScrollableResultsImpl
extends AbstractScrollableResults

Implementation of ScrollableResults which can handle collection fetches.

Author:

Steve Ebersole

Constructor Summary

Constructors

Constructor and Description
FetchingScrollableResultsImpl(ResultSet rs, PreparedStatement ps, SessionImplementor sess, Loader loader, QueryParameters queryParameters, Type[] types, HolderInstantiator holderInstantiator) Constructs a FetchingScrollableResultsImpl.

Method Summary

Modifier and Type	Method and Description
void	afterLast() Go to a location just after the last result.
void	beforeFirst() Go to a location just before first result, This is the location of the cursor on a newly returned scrollable result.
boolean	first() Go to the first result.
protected Object[]	getCurrentRow()
int	getRowNumber() Get the current position in the results.
boolean	isFirst() Is this the first result?
boolean	isLast() Is this the last result?
boolean	last() Go to the last result.
boolean	next() Advance to the next result.
boolean	previous() Retreat to the previous result.
boolean	scroll(int positions) Scroll the specified number of positions from the current position.
boolean	setRowNumber(int rowNumber) Set the current position in the result set.

Methods inherited from class org.hibernate.internal.AbstractScrollableResults

afterScrollOperation, close, get, get, getBigDecimal, getBigInteger, getBinary, getBlob, getBoolean, getByte, getCalendar, getCharacter, getClob, getDate, getDouble, getFinal, getFloat, getHolderInstantiator, getInteger, getLoader, getLocale, getLong, getNonFinal, getPs, getQueryParameters, getResultSet, getSession, getShort, getString, getText, getTimeZone, getType, getTypes

Methods inherited from class java.lang.Object

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

Constructor Detail

FetchingScrollableResultsImpl

public FetchingScrollableResultsImpl(ResultSet rs,
                                     PreparedStatement ps,
                                     SessionImplementor sess,
                                     Loader loader,
                                     QueryParameters queryParameters,
                                     Type[] types,
                                     HolderInstantiator holderInstantiator)

Constructs a FetchingScrollableResultsImpl.

Parameters:

rs - The scrollable result set

ps - The prepared statement used to obtain the result set

sess - The originating session

loader - The loader

queryParameters - query parameters

types - The result types

holderInstantiator - Ugh

Method Detail

getCurrentRow

protected Object[] getCurrentRow()

Specified by:

getCurrentRow in class AbstractScrollableResults

next

public boolean next()

Description copied from interface: ScrollableResults

Advance to the next result.

Returns:

true if there is another result

previous

public boolean previous()

Description copied from interface: ScrollableResults

Retreat to the previous result.

Returns:

true if there is a previous result

scroll

public boolean scroll(int positions)

Description copied from interface: ScrollableResults

Scroll the specified number of positions from the current position.

Parameters:

positions - a positive (forward) or negative (backward) number of rows

Returns:

true if there is a result at the new location

last

public boolean last()

Description copied from interface: ScrollableResults

Go to the last result.

Returns:

true if there are any results

first

public boolean first()

Description copied from interface: ScrollableResults

Go to the first result.

Returns:

true if there are any results

beforeFirst

public void beforeFirst()

Description copied from interface: ScrollableResults

Go to a location just before first result, This is the location of the cursor on a newly returned scrollable result.

afterLast

public void afterLast()

Description copied from interface: ScrollableResults

Go to a location just after the last result.

isFirst

public boolean isFirst()

Description copied from interface: ScrollableResults

Is this the first result?

Returns:

true if this is the first row of results, otherwise false

isLast

public boolean isLast()

Description copied from interface: ScrollableResults

Is this the last result?

Returns:

true if this is the last row of results.

getRowNumber

public int getRowNumber()

Description copied from interface: ScrollableResults

Get the current position in the results. The first position is number 0 (unlike JDBC).

Returns:

The current position number, numbered from 0; -1 indicates that there is no current row

setRowNumber

public boolean setRowNumber(int rowNumber)

Description copied from interface: ScrollableResults

Set the current position in the result set. Can be numbered from the first position (positive number) or the last row (negative number).

Parameters:

rowNumber - the row number. A positive number indicates a value numbered from the first row; a negative number indicates a value numbered from the last row.

Returns:

true if there is a row at that row number