Dataset spec

Context

During a discussion of the Stream .match() method being asynchronous, the question came up about what to do with synchronous querying use cases (such as filter/matching using an in-memory store). @bergos suggested that this is what Datasets were intended for, and that we should create a Wiki page to document a potential spec and gauge community interest.

See also:

• rdf-ext's SimpleDataset,
• which is itself based on on the v0.3.x Graph API

Dataset API

Properties

• number .length Number of quads in the dataset. (Similar to Array.length)

Methods

• Dataset add(Quad quad) adds a given quad to the dataset, returns itself.

• Dataset addAll(Array<Quad> quads) adds all given quads to the dataset, returns itself.

• Dataset clone() returns a copy of this dataset (and all its quads)

• Dataset difference(Dataset other) returns a set difference of this dataset and the given one.

• Boolean equals(Dataset other) returns true if this dataset contains the same quads as the given one.

• Boolean every(Function callback) tests whether all elements in the dataset pass the test implemented by the provided function. (Similar to Array.every())