org.hibernate.impl
Class FetchingScrollableResultsImpl

java.lang.Object
  org.hibernate.impl.AbstractScrollableResults
      org.hibernate.impl.FetchingScrollableResultsImpl

All Implemented Interfaces:

ScrollableResults

public class FetchingScrollableResultsImpl
extends AbstractScrollableResults

Implementation of ScrollableResults which can handle collection fetches.

Author:

Steve Ebersole

Constructor Summary

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

Method Summary

void	afterLast() Go to a location just after the last result
void	beforeFirst() Go to a location just before first result (this is the initial location)
boolean	first() Go to the first result
protected Object[]	getCurrentRow()
int	getRowNumber() Get the current location in the result set.
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 an arbitrary number of locations
boolean	setRowNumber(int rowNumber) Set the current location in the result set, numbered from either the first row (row number 0), or the last row (row number -1).

Methods inherited from class org.hibernate.impl.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)
                              throws MappingException

Throws:

MappingException

Method Detail

getCurrentRow

protected Object[] getCurrentRow()

Specified by:

getCurrentRow in class AbstractScrollableResults

next

public boolean next()
             throws HibernateException

Advance to the next result

Returns:

true if there is another result

Throws:

HibernateException

previous

public boolean previous()
                 throws HibernateException

Retreat to the previous result

Returns:

true if there is a previous result

Throws:

HibernateException

scroll

public boolean scroll(int positions)
               throws HibernateException

Scroll an arbitrary number of locations

Parameters:

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

Returns:

true if there is a result at the new location

Throws:

HibernateException

last

public boolean last()
             throws HibernateException

Go to the last result

Returns:

true if there are any results

Throws:

HibernateException

first

public boolean first()
              throws HibernateException

Go to the first result

Returns:

true if there are any results

Throws:

HibernateException

beforeFirst

public void beforeFirst()
                 throws HibernateException

Go to a location just before first result (this is the initial location)

Throws:

HibernateException

afterLast

public void afterLast()
               throws HibernateException

Go to a location just after the last result

Throws:

HibernateException

isFirst

public boolean isFirst()
                throws HibernateException

Is this the first result?

Returns:

true if this is the first row of results

Throws:

HibernateException

isLast

public boolean isLast()
               throws HibernateException

Is this the last result?

Returns:

true if this is the last row of results

Throws:

HibernateException

getRowNumber

public int getRowNumber()
                 throws HibernateException

Get the current location in the result set. The first row is number 0, contrary to JDBC.

Returns:

the row number, numbered from 0, or -1 if there is no current row

Throws:

HibernateException

setRowNumber

public boolean setRowNumber(int rowNumber)
                     throws HibernateException

Set the current location in the result set, numbered from either the first row (row number 0), or the last row (row number -1).

Parameters:

rowNumber - the row number, numbered from the last row, in the case of a negative row number

Returns:

true if there is a row at that row number

Throws:

HibernateException