lpg-modeler-cli

Command line interface for LPG Modeler — design a property graph once, generate every schema from it.

npx lpg-modeler-cli check model/domain.lpg.yaml
npx lpg-modeler-cli emit  model/domain.lpg.yaml --target shacl --out ./schema

Seven targets from one model file: LadybugDB DDL, Neo4j constraints, GQL graph types (ISO/IEC 39075), PG-Schema, SHACL shapes, an OWL ontology, and LinkML.

Anything a target cannot enforce is reported — as a diagnostic and as a comment at the lossy line of the generated artifact. Nothing disappears quietly.

$ lpg emit social.lpg.yaml --target ladybug --out ./schema
schema/social.ladybug.cypher
social.lpg.yaml:26:7 warning [ladybug] downgrade-required: Property 'Person.email' is
  required, which LadybugDB cannot enforce: it has no NOT NULL and only the primary key
  is non-null.

Exit code is non-zero when a model has errors, so a pull request can be gated on schema validity.

• Documentation: https://volland.github.io/lpg-modeler/
• Model format: https://volland.github.io/lpg-modeler/model-format.html
• Examples to start from: https://volland.github.io/lpg-modeler/examples.html
• VS Code extension: https://marketplace.visualstudio.com/items?itemName=pavlyshyn.lpg-modeler

Installing globally gives you the shorter lpg command:

npm install -g lpg-modeler-cli
lpg targets

MIT licensed.