Package org.apache.cayenne.access.jdbc

Class LimitResultIterator<T>

java.lang.Object

org.apache.cayenne.access.jdbc.LimitResultIterator<T>

All Implemented Interfaces:

AutoCloseable, Iterable<T>, ResultIterator<T>

public class LimitResultIterator<T>
extends Object
implements ResultIterator<T>

Since:

3.0

Field Summary

Fields

Modifier and Type	Field	Description
protected ResultIterator<T>	delegate
protected int	fetchedSoFar
protected int	fetchLimit
protected Map<String,Object>	nextDataObjectIds
protected boolean	nextRow
protected int	offset

Constructor Summary

Constructors

Constructor	Description
LimitResultIterator(ResultIterator<T> delegate, int offset, int fetchLimit)

Method Summary

Modifier and Type	Method	Description
List<T>	allRows()	Returns all yet unread rows from ResultSet without closing it.
void	close()	Closes ResultIterator and associated ResultSet.
boolean	hasNextRow()	Returns true if there is at least one more record that can be read from the iterator.
Iterator<T>	iterator()
T	nextRow()	Returns the next result row that is, depending on the query, may be a scalar value, a DataRow, or an Object[] array containing a mix of scalars and DataRows.
void	skipRow()	Goes past current row.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

delegate

protected ResultIterator<T> delegate

nextDataObjectIds

protected Map<String,Object> nextDataObjectIds

fetchLimit

protected int fetchLimit

offset

protected int offset

fetchedSoFar

protected int fetchedSoFar

nextRow

protected boolean nextRow

Constructor Detail

LimitResultIterator

public LimitResultIterator(ResultIterator<T> delegate,
                           int offset,
                           int fetchLimit)

Method Detail

iterator

public Iterator<T> iterator()

Specified by:

iterator in interface Iterable<T>

Since:

4.0

close

public void close()

Description copied from interface: ResultIterator

Closes ResultIterator and associated ResultSet. This method must be called explicitly when the user is finished processing the records. Otherwise unused database resources will not be released properly.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface ResultIterator<T>

allRows

public List<T> allRows()

Description copied from interface: ResultIterator

Returns all yet unread rows from ResultSet without closing it.

Specified by:

allRows in interface ResultIterator<T>

Since:

3.0

hasNextRow

public boolean hasNextRow()

Description copied from interface: ResultIterator

Returns true if there is at least one more record that can be read from the iterator.

Specified by:

hasNextRow in interface ResultIterator<T>

nextRow

public T nextRow()

Description copied from interface: ResultIterator

Returns the next result row that is, depending on the query, may be a scalar value, a DataRow, or an Object[] array containing a mix of scalars and DataRows.

Specified by:

nextRow in interface ResultIterator<T>

Since:

3.0

skipRow

public void skipRow()

Description copied from interface: ResultIterator

Goes past current row. If the row is not needed, this may save some time on data conversion.

Specified by:

skipRow in interface ResultIterator<T>

Since:

3.0