org.teiid.common.buffer
Interface TupleSource

All Known Subinterfaces:

IndexedTupleSource

All Known Implementing Classes:

AbstractTupleSource, BatchCollector.BatchProducerTupleSource, BatchIterator, CollectionTupleSource, TupleBrowser

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

void	closeSource() Closes the Tuple Source.
java.util.List<?>	nextTuple() Returns the next tuple

Method Detail

nextTuple

java.util.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.