@comunica/core

Comunica Core

The core framework of Comunica, which consists of a actors, buses, and mediators.

Click here to learn more about this core architecture.

This module is part of the Comunica framework, and should only be used by developers that want to build their own query engine.

Click here if you just want to query with Comunica.

Install

$ yarn add @comunica/core

Exported classes

• Actor: An actor can act on messages of certain types and provide output of a certain type.
• Bus: A publish-subscribe bus for sending actions to actors to test whether or not they can run an action.
• Mediator: A mediator can mediate an action over a bus of actors.
• ActionObserver: An ActionObserver can passively listen to Actor.run inputs and outputs for all actors on a certain bus.
• BusIndexed: A bus that indexes identified actors, so that actions with a corresponding identifier can be published more efficiently.
• Logger: A logger accepts messages from different levels and emits them in a certain way.
• ActionContext: Implementation of IActionContext using Immutable.js.

Changelog

v2.10.0 - 2023-10-27

Added

• Convert raw source contexts to ActionContexts
• Support relative and absolute paths for COMUNICA_CONFIG

Changed

• Log expression error messages
• Print log levels in different colors
• Update readable-stream, yargs, lerna, typescript and eslint (#1271)

Fixed

• Fix wrong cardinality for zero-or-one paths with one variable
• Support building with esModuleInterop TS flag
• Skip calling endsWith on mediaType when mediaType is undefined

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