RDF Studio v0.1.0 — Initial Release

RDF Studio v0.1.0 — Initial Release

A VS Code extension for building and exploring RDF knowledge graphs. Load Turtle (.ttl) files and get a visual editor for OWL ontologies, entities, and SHACL constraints — no external triplestore needed.

Highlights

Visual Knowledge Graph Editor

• Ontology tree with namespace grouping, type-colored icons, and instance counts
• Triple table showing entity relationships as Source · Relation · Target with fan-in grouping
• Schema view for OWL classes with declared properties, domain/range, and SHACL severity pills (Required / Recommended / Optional)

Full CRUD

• Create and edit ontologies, classes, properties, and instances via modal dialog forms
• Add/remove relationships with schema-guided predicate and range-locked target pickers
• Inline cell editing — click a value to edit, Enter to save, Esc to cancel
• Import management — add/remove owl:imports between ontologies
• Auto-prefix injection for cross-ontology references

SPARQL & Visualization

• SPARQL query panel with 5 preset queries and clickable result tables
• Neighborhood graph — force-directed canvas showing direct connections

Turtle Language Support

• Hover tooltips, Go to Definition (F12), autocomplete, document outline
• Diagnostics for undefined prefixes and dangling references

Built for VS Code

• Full light/dark theme support via --vscode-* variables
• Content Security Policy with nonce
• Codicon icons throughout
• All edits via WorkspaceEdit — supports Undo/Redo and source control

Powered by

• Oxigraph WASM — in-memory SPARQL 1.1 store
• Codicons — VS Code's icon font

What's next

• Async SHACL validation with ghost rows for missing required properties
• Constraint editor for creating/editing SHACL shapes
• Rename with workspace-wide refactoring
• Delete class/entity with impact analysis