Package uk.gov.gchq.gaffer.operation.impl

Core operation implementations.

Class Summary

Class	Description
Count<T>	A Count operation counts how many items there are in the provided Iterable.
Count.Builder<T>
CountGroups	A CountGroups operation takes in Elements and collects counts for the number of entity and edge groups used.
CountGroups.Builder
DiscardOutput	A DiscardOutput operation is used as a terminal operation to indicate that the results from the previous operation are not used again.
DiscardOutput.Builder
ForEach<I,O>	A ForEach operation runs the supplied operation on an Iterable of inputs.
ForEach.Builder<I,O>
GenerateSplitPointsFromSample<T>	The GenerateSplitPointsFromSample operation takes an Iterable sample and generates a List of split points from that.
GenerateSplitPointsFromSample.Builder<T>
GetVariable
GetVariable.Builder
GetVariables
GetVariables.Builder
GetWalks	A GetWalks class is used to retrieve all of the walks in a graph starting from one of a set of provided EntityIds, with a maximum length.
GetWalks.Builder
If<I,O>	A If is an Operation which will execute one of two Operations, based on the result of testing an input Object against a provided Predicate.
If.Builder<I,O>
Limit<T>	A Limit operation takes in an Iterable of items and limits the iterable to a given number of items.
Limit.Builder<T>
Map<I,O>	A Map is a Gaffer Operation which maps an input I to an output O by applying a supplied Function or List of Functions.
Map.Builder<I>
Map.OutputBuilder<I,O>
Reduce<T>	A Reduce is a Gaffer Operation which reduces an Iterable input of T to a single output value by applying a supplied BinaryOperator.
Reduce.Builder<T>
SampleElementsForSplitPoints<T>	The SampleElementsForSplitPoints operation is for sampling an Iterable of Elements and generating split points.
SampleElementsForSplitPoints.Builder<T>
ScoreOperationChain	A ScoreOperationChain operation determines a "score" for an OperationChain, and is used to determine whether a particular user has the required permissions to execute a given OperationChain.
ScoreOperationChain.Builder
SetVariable
SetVariable.Builder
SplitStoreFromFile	The SplitStoreFromFile operation is for splitting a store based on a file of split points.
SplitStoreFromFile.Builder
SplitStoreFromIterable<T>	The SplitStoreFromIterable operation is for splitting a store based on an iterable of split points.
SplitStoreFromIterable.Builder<T>
Validate	A Validate operation takes in Elements validates them using the store schema and returns the valid Elements.
Validate.Builder
ValidateOperationChain
ValidateOperationChain.Builder
While<I,O>	A While is an Operation which executes a provided delegate Operation, either while some condition is true, (upto some global maximum), or until some configurable cut-off is reached.
While.Builder<I,O>