org.teiid.common.buffer

Interface IndexedTupleSource

All Superinterfaces:

TupleSource

All Known Implementing Classes:

AbstractTupleSource, BatchIterator, TupleBuffer.TupleBufferTupleSource

public interface IndexedTupleSource
extends TupleSource

Method Summary

Modifier and Type	Method and Description
long	getCurrentIndex() Get the current position.
boolean	hasNext()
void	mark() Save the current position that can be restored with a call to reset()
void	reset() Restore the previous mark and set the mark back to the first position.
void	setPosition(long position) Set the tuple source position

Methods inherited from interface org.teiid.common.buffer.TupleSource

closeSource, nextTuple

Method Detail

hasNext

boolean hasNext()
         throws TeiidComponentException,
                TeiidProcessingException

Returns:

true if there are more tuples

Throws:

TeiidComponentException

TeiidProcessingException

mark

void mark()
   throws TeiidComponentException

Save the current position that can be restored with a call to reset()

Throws:

TeiidComponentException

reset

void reset()

Restore the previous mark and set the mark back to the first position.

setPosition

void setPosition(long position)

Set the tuple source position

Parameters:

position -

getCurrentIndex

long getCurrentIndex()

Get the current position. The position is 1 based and reports the position of the tuple that will be retrieved with a call to TupleSource.nextTuple()

Returns: