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  • License BSD-3-Clause

Reactive dataflow processing.

Package Exports

  • vega-dataflow
  • vega-dataflow/src/ChangeSet
  • vega-dataflow/src/Tuple

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (vega-dataflow) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

vega-dataflow

Reactive dataflow processing.

Defines a reactive dataflow graph that can process both scalar values and streaming relational data. A central Dataflow instance manages and schedules a collection of Operator instances, each of which is a node in a dataflow graph. Each operator maintains a local state value, and may only also process streaming data objects (or tuples) passing through. Operators may depend on a set of named Parameters, which can either be fixed values or live references to other operator values.

Upon modifications to operator parameters or input data, changes are propagated through the graph in topological order. Pulse objects propagate from operators to their dependencies, and carry queues of added, removed and/or modified tuples.

This module contains a library of Operator types for data stream query processing, including data generation, sampling, filtering, binning, group-by aggregation, and cross-stream lookup operations.