Auxiliary Operators

This section provides an overview of auxiliary operators, which operate on a single GraphCollection or LogicalGraph.

Auxiliary Operators
Apply
Reduce
Call

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Apply

Applies a given unary graph to graph operator (e.g. aggregate) on each logical graph a graph collection.

Method	Expects	Returns
apply	ApplicableUnaryGraphToGraphOperator	GraphCollection with resulting logical graphs.

Provided unary graph to graph operators:

Operator	Description
ApplyAggregation	Takes a collection of logical graphs and user defined aggregate functions as input. The aggregate functions are applied on each logical graph contained in the collection and the aggregate is stored as additional properties at the graphs.
ApplySubgraph	Uses a vertex filter function and an edge filter function to create a subgraph from a given LogicalGraph.
ApplyTransformation	Applies a given graph transformation function on on all logical graphs in a graph collection.

Reduce

Transforms a graph collection into a logical graph by applying a binary graph to graph operator pairwise on the elements of the collection.

Method	Expects	Returns
reduce	ReducibleBinaryGraphToGraphOperator	LogicalGraph

Provided reducible graph to graph operators:

Operator	Description
ReduceCombination	Creates a new logical graph by unifying the vertex and edge sets of all graphs contained in the given collection.
ReduceExclusion	Creates a new logical graph that contains only vertices and edges that are contained in the starting graph but not in any other graph that is part of the given collection.
ReduceOverlap	Creates a new logical graph containing the overlapping vertex and edge sets of the graphs contained in the given collection. Vertex and edge equality is based on their respective identifiers.

Call

Method	Expects	Returns
callForCollection	UnaryCollectionToCollectionOperator	Resulting GraphCollection of given operator.
callForCollection	Binary collection to collection operator and second input collection (GraphCollection) for operator.	Resulting GraphCollection of given operator.
callForGraph	UnaryCollectionToGraphOperator	Resulting LogicalGraph of given operator.