NotConstraint

NotConstraint class.

The NotConstraint inverts the result of its value. The value of the NotConstraint must be another constraint.

A typical use case for the NotConstraint is the inversion of whitelists to blacklists. If for example a user should not be able to see entries of a specific content type, it can either be achieved by denying access to those content types or by allowing access to all but the entries of the content type:

{
  "not": {
    "equals": [{"doc": "sys.contentType.sys.id"}, "content-type-id"]
  }
}