chameleon validate

chameleon validate [file]

chameleon validate

ℹ Validating schema.cham...
✓ Schema is valid

ℹ Validating schema.cham...
✓ Schema is valid

Validation checks passed:
  ✓ Syntax is correct
  ✓ All entity references exist
  ✓ Foreign keys are consistent
  ✓ Primary keys are defined
  ✓ No circular dependencies

chameleon validate schemas/users.cham

ℹ Validating schemas/users.cham...
✓ Schema is valid

entity User {
    id: uuid primary
    email: strnig unique,  // Typo: 'strnig' instead of 'string'
}

chameleon validate schemas/invalid.cham

ℹ Validating schemas/invalid.cham...
❌ Validation failed

Error at line 3, column 13:
  3 │     email: strnig unique,
    │            ^^^^^^
    │ Unknown type: strnig

Help: Did you mean 'string'?

❌ schema validation failed

entity Post {
    title: string,
    content: string,
}

chameleon validate schemas/no-pk.cham

ℹ Validating schemas/no-pk.cham...
❌ Validation failed

Entity 'Post' must have a primary key
  Suggestion: Add a primary key field:
    id: uuid primary,

❌ schema validation failed

entity Post {
    id: uuid primary,
    author: UnknownEntity,  // Entity doesn't exist
}

chameleon validate schemas/bad-ref.cham

ℹ Validating schemas/bad-ref.cham...
❌ Validation failed

Entity 'UnknownEntity' not found
  Referenced in: Post.author
  
  Suggestion: Define the entity or check for typos

❌ schema validation failed

entity User {
    id: uuid primary,
    posts: [Post],
}

entity Post {
    id: uuid primary,
    author: User,
    // Circular: Post -> User -> Post
}

chameleon validate schemas/circular.cham

ℹ Validating schemas/circular.cham...
❌ Validation failed

Circular dependency detected:
  User -> Post -> User
  
  Suggestion: Use foreign keys instead of direct references

❌ schema validation failed

entity User {
    id: uuid primary,
    email: string unique,
    name: string,
    created_at: timestamp default now(),
}

entity Post {
    id: uuid primary,
    title: string,
    content: string,
    published: bool,
    author_id: uuid,
    created_at: timestamp default now(),
}

entity Comment {
    id: uuid primary,
    content: string,
    post_id: uuid,
    user_id: uuid,
    created_at: timestamp default now(),
}

chameleon validate schemas/blog.cham

ℹ Validating schemas/blog.cham...
✓ Schema is valid

chameleon validate missing.cham

❌ schema file not found: missing.cham

chameleon migrate --dry-run

ℹ Loading schemas from: [./schemas]
✓ Found 1 schema file(s): [users.cham]
❌ failed to parse merged schemas:
   Error in users.cham:5
   Unknown type 'strnig'

❌ Migration aborted

# Git pre-commit hook
#!/bin/bash
chameleon validate || exit 1

for file in schemas/*.cham; do
  chameleon validate "$file" || exit 1
done

# .github/workflows/validate.yml
name: Validate Schema
on: [push, pull_request]
jobs:
  validate:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Install ChameleonDB
        run: curl -sSL https://chameleondb.dev/install | sh
      - name: Validate schema
        run: chameleon validate

chameleon migrate --dry-run

chameleon migrate --check