🫆 SPARQL Qlue

A VisualStudio Code extension for working with SPARQL query files (.rq, .sparql) providing:

• Syntax highlighting,
• Diagnostics, completions, formatting using the qlue-ls language server running via WebAssembly,
• Execute SPARQL query and inspect results with YASGUI YASR package.

Language Server

Use the qlue-ls language server compiled to wasm, running in-process.

• Context-aware autocomplete: suggests subjects, predicates, and objects based on your SPARQL endpoint and the current query context
• Hover information: shows labels and descriptions for IRIs by querying the endpoint
• Diagnostics: reports syntax errors and warnings as you type
• Auto-formatting: formats SPARQL documents
• Code actions: quick fixes for common issues

Query Execution

Run the active query with Ctrl+Enter / Cmd+Enter, the ▶ file header button, or right-click → Execute SPARQL Query

Results are displayed in the SPARQL Results panel powered by YASGUI YASR component

The endpoint URL is resolved from a #+ endpoint: <url> comment in the file, or from an endpoint.txt file in the same directory or any parent up to the workspace root.

Language Server Settings

Click the gear ⚙️ button in the file header, or right-click → Configure SPARQL Language Server to open the settings editor.

Settings are persisted to workspace configuration (sparql-qlue.serverSettings) and enable to:

• Configure the language server behavior,
• Configure backends with custom prefixes and completion queries per endpoint.

Extension Settings

Contributing

See CONTRIBUTING.md