Class MetaRegistry

constructor

• new MetaRegistry(): MetaRegistry

• Returns MetaRegistry

Static Readonly_list

Static Readonlycount

Static Readonlynamespace

StaticcreateMetaObject

• createMetaObject(oGuid, origin?): MetaObject

• Creates a meta object for a GUID object.

  Parameters

  • oGuid: object

    Object of type GUID.
  • Optionalorigin: object

    This is the original object setting the current object. Default is 'oGuid'.

  Returns MetaObject

  Returns the created meta object.

StaticcreateNsReferObject

• createNsReferObject(target): NsObject

• Register the function in the Namespace and create a reference object.

  Parameters

  • target: Function

    Function or constructor.

  Returns NsObject

  Returns the created namespace reference object.

  Example

  var meta = new MetaElement('m1');
  var obj = {};
  obj.owner = MetaRegistry.createNsReferObject(meta.constructor);
  console.log(obj.owner); // { $ns: 'Meta.MetaElement' }
  Copy

StaticcreateReferObject

• createReferObject(meta): RefObject

• Creates a reference object for a GUID object.

  Parameters

  • meta: MetaObject

    This is a meta object.

  Returns RefObject

  Returns the generated reference object.

  Example

  var meta = new MetaElement('m1');
  var obj = {};
  obj.owner = MetaRegistry.createReferObject(meta);
  console.log(obj.owner); // { $ref: '5337877c-49d6-9add-f35a-7bd31d510d4f' }
  Copy

Staticfind

• find(oGuid): MetaObject

• Locate the meta object in the registry.

  Parameters

  • oGuid: string | object

    A GUID object or a GUID string to be retrieved.

  Returns MetaObject

  Returns the found meta object or 'undefined'.

StaticfindClass

• findClass(target): string

• Finds the creator or object in the Namespace and returns the entire path.

  Parameters

  • target: Function

    This is a constructor or object.

  Returns string

  Returns the full path or 'undefined'

StaticfindSetObject

• findSetObject(oGuid, origin): MetaObject

• Locate the set GUID object in the source object.

  Parameters

  • oGuid: string | object

    The GUID value or GUID object to be queried.
  • origin: object

    Original object.

  Returns MetaObject

  Returns the queried meta object.

StaticgetClass

• getClass(fullName): object | Function

• Returns the constructor or object for the full name in the Namespace.

  Parameters

  • fullName: string

    Full path.

  Returns object | Function

  constructor or object, if not, return 'undefined'.

Statichas

• has(oGuid): boolean

• Check if the registry has a meta object.

  Parameters

  • oGuid: string | object

    A GUID object or a GUID string to check.

  Returns boolean

  Returns the existence of a meta object.

StatichasGuidObject

• hasGuidObject(oGuid, origin): boolean

• Verify that the source object contains a GUID object.

  Parameters

  • oGuid: string | object

    A GUID object or string to check.
  • origin: object | object[]

    Original object.

  Returns boolean

  Returns whether is included or not.

StatichasRefer

• hasRefer(oGuid): boolean

• Verify that the GUID object contains a reference type element. Reference types are '$ref' and '$ns'.

  Parameters

  • oGuid: object

    GUID object to check.

  Returns boolean

  Returns whether is included or not.

Staticinit

• init(): void

• Initializes registered meta objects and namespaces.

  Returns void

StaticisGuidObject

• isGuidObject(target): boolean

• Verify that the target object is a GUID object.

  Parameters

  • target: object

    to be checked.

  Returns boolean

  Returns whether a GUID object exists.

StaticisMetaObject

• isMetaObject(target): boolean

• Determines whether the target object is a meta object.

  Parameters

  • target: object

    The object to be checked.

  Returns boolean

  Returns whether or not a meta object exists.

StaticloadMetaObject

• loadMetaObject(str, parse?): MetaObject

• Pars the serialized GUID string to convert it to 'MetaObject'.

  Parameters

  • str: string

    Serialized GUID string.
  • Optionalparse: Function

    JSON parser function. Default is 'JSON.parse'.

  Returns MetaObject

  Returns parsed meta objects.

Staticregister

• register(meta): void

• Register the meta object and register the creator in the namespace. An exception occurs if an object is already registered. Register if there is no creator in the Namespace.

  Parameters

  • meta: MetaObject

    Meta object to register.

  Returns void

  Throws

  An exception occurs when the object is already registered.

StaticregisterClass

• registerClass(target, ns, key): void

• Register the creator or object in the Namespace. Register after performing duplicate checks, and do not store built-in functions internally.

  Parameters

  • target: object | Function

    To be registered.
  • ns: string

    Namespace name.
  • key: string

    Destination name.

  Returns void

Staticrelease

• release(meta): boolean

• Undoes the meta object in the registry.

  Parameters

  • meta: string | MetaObject

    A meta object or GUID string to release.

  Returns boolean

  Returns successful release.

StaticreleaseClass

• releaseClass(fullName): boolean

• Unlocks a constructor or object from the Namespace.

  Parameters

  • fullName: string

    full name of the namespace.

  Returns boolean

  Returns successful release.

StaticsetMetaObject

• setMetaObject(oGuid, meta): SetObject

• Set the GUID of the meta object in the GUID object.

  Parameters

  • oGuid: object

    Object of type GUID.
  • meta: MetaObject

    A meta object with a GUID.

  Returns SetObject

  Returns the set object.

  Example

  var meta = new MetaElement('m1');
  var obj = { name: 'm2' };
  MetaRegistry.setMetaObject(obj, meta);
  console.log(obj); // {name: 'm2', $set: '5337877c-49d6-9add-f35a-7bd31d510d4f'}
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StatictransformRefer

• transformRefer(oGuid): object

• Converts the reference element value of a GUID object to an object reference. To be converted: '$ns' is converted to '[object Object]'.

  Parameters

  • oGuid: object

    The GUID object to be converted.

  Returns object

  Returns the transformed object.

StaticvalidObject

• validObject(oGuid): boolean

• Validates the GUID object. Validation includes:

  1. Check if the object has duplicate GUID values
  2. Determine if an object has a '$ref' value
  3. Determine if an object has a '$ns' value
  4. Check the number of objects '_key' and '_elem'

  Parameters

  • oGuid: object

    The GUID object to be inspected.

  Returns boolean

  Returns whether a GUID object exists.