Class | Description |
---|---|
BinaryOperator |
BinaryOperator: The basic binary operator class.
|
CartesianProduct |
CartesianProduct: A cartesian product between two inuput operators.
|
EndOfStreamTuple |
EndOfStreamTuple: Signifies the end of a stream.
|
ExternalSort |
ExternalSort: Your implementation of sorting.
|
GraceHashJoin |
MergeJoin: Implements a merge join.
|
HashGroup |
HashGroup: Your implementation of hash-based grouping.
|
MergeJoin |
MergeJoin: Implements a merge join.
|
MessageSink |
MessageSink: A simple interface to provide DB messages to the user
as an operator.
|
NestedLoopsJoin |
NestedLoopsJoin: Implements a (blocking) nested loops join.
|
NullUnaryOperator | |
Operator |
Operator: The basic operator abstraction.
|
PhysicalJoin |
PhysicalJoin: The base class for all joins.
|
Project |
Project: Implements standard attribute projection.
|
RelationScan |
RelationScan: Scans an input relation from its primary file.
|
Select |
Select: Implementation of a selection operator.
|
Sink |
Sink: An operator acting as a sink for other operators (i.e., it
simply saves its input and propagates it on getNext() calls).
|
SourceOperator |
SourceOperator: An operator that acts as a source to other
operators.
|
UnaryOperator |
UnaryOperator: Models a unary engine operator.
|
Exception | Description |
---|---|
EngineException |
EngineException: Thrown whenever there is an engine error.
|