ShEx.js WebApps

In-browser demos of the shex.js implementation of Shape Expressions. One validator, in two flavors: simple runs validation on the UI thread; worker runs it in a Web Worker so the page stays responsive (and validation can be interrupted). Everything else is a plugin the validator loads by URL (?plugin=<url>, or named by a manifest entry): a module that may install semantic-action extensions for schemas to dispatch, and may add a screen of panes and verbs of its own beside the validator's.

ShEx validator

Validate RDF data against a ShEx schema (ShExC, ShExJ or ShExR).

shex-simple — single-threaded (textareas)
shex-simple?worker=1 — in a Web Worker (textareas)
every example at once — one manifest, and each entry brings the plugin it needs

ShExMap plugin

Validate with the Map extension, capture bindings, and materialize them into another RDF graph on a screen of its own. These URLs open the validator with the plugin and its examples loaded.

shexmap-simple — single-threaded (textareas)
shexmap-worker — in a Web Worker (textareas)

ShExReduce plugin

Validate with the Reduce extension — actions that steer or check a match as it happens — then fold the parse into an AST. The demo manifest's calculator entries show both.

shex-simple + ShExReduce — with the calc examples

Write your own

A plugin is one URL: a module that registers what it adds. doc/plugins.md is the contract, and hello-plugin.js is a working one in about forty lines.

shex-simple + Hello — the skeleton, loaded