Metaschema.md

Metaschema: data structure schemas

Metaschema core types

• Primitive types: number, bigint, string, boolean, symbol
• Structural types: object, function

Domain model types

• Integer number: int
• Money: money
• Date: date, time, datetime
• Geometry: point, path, polygon
• BLODs: text, buffer

Machine-oriented types

• Signed integers: i8, i16, i32, i64
• Unsigned integers: u8, u16, u32, u64
• Floats: f32, f64
• Character: char

Collections

• Object collection with string keys and number values:
  • Shorthand: field: { object: { string: 'number' } }
  • Long form: field: { type: 'object', key: 'string', value: 'number' }
• Array of number, maximum length of 10 elements:
  • Long form: field: { type: 'array', value: 'number', length: 10 }
  • Shorthand: field: { array: 'number', length: 10 }
• Array of string, length between 10 and 20 elements:
  • Shorthand: field: { array: 'number', length: { min: 10, max: 20 } }
• Set of numbers:
  • Shorthand: field: { set: 'number' }
  • Long form: field: { type: 'set', value: 'number' }
• Map with string keys and number values:
  • Shorthand: field: { string: 'number' }
  • Long form: field: { type: 'map', key: 'string', value: 'number' }
• Tuples
  • Tuple of 3 numbers: field: { type: 'tuple', value: 'number', length: 3 }
  • Tuple of two elements (number and string) field: ['string', 'number']

Enumerated

• Value of enumerated type:
  • Shorthand: field: { enum: ['uno', 'due', 'tre'] }
  • Long form: field: { type: 'enum', enum: ['uno', 'due', 'tre'] }
• Array of enumerated type:
  • Shorthand: field: { array: { enum: ['uno', 'due', 'tre'] } }
  • Long form: field: { type: 'array', enum: ['uno', 'due', 'tre'] }
• Map of enumerated type values and string keys:
  • Shorthand: field: { map: { key: 'string', enum: [1, 2, 3] } }
  • Long form: field: { type: 'map', key: 'string' enum: [1, 2, 3] }

Complex types

• Domain (complex type defined in this model with UpperCamalCase name): field: 'DomainName' or field: { type: 'DomainName' }