org.teiid.common.buffer

Interface TupleSource

All Known Subinterfaces:

IndexedTupleSource

All Known Implementing Classes:

AbstractTupleSource, BatchCollector.BatchProducerTupleSource, BatchIterator, CollectionTupleSource, DataTierTupleSource, TempTableDataManager.ProxyTupleSource, TupleBrowser, TupleBuffer.TupleBufferTupleSource, TupleSourceCache.CopyOnReadTupleSource

public interface TupleSource

A cursored source of tuples. The implementation will likely be closely bound to a BufferManager implementation - it will work with it to use TupleBatches behind the scenes.

Method Summary

Modifier and Type	Method and Description
void	closeSource() Closes the Tuple Source.
List<?>	nextTuple() Returns the next tuple

Method Detail

nextTuple

List<?> nextTuple()
           throws TeiidComponentException,
                  TeiidProcessingException

Returns the next tuple

Returns:

the next tuple (a List object), or null if there are no more tuples.

Throws:

TeiidComponentException - indicating a non-business exception such as a communication exception, or other such nondeterministic exception

TeiidProcessingException

closeSource

void closeSource()

Closes the Tuple Source.