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description : string
Facet description
invariant : boolean
True to validate the facet only on the object where it is declared, false to validate it on all objects having it.
name : identifier
Facet name
| Valid values based on“string”. | |
|---|---|
| :?[\p{L}_][\p{L}\p{N}_]*(:[\p{L}_][\p{L}\p{N}_]*)* |
Value must begin with a letter or an underscore. Case and length are not restricted. Letters, numbers and underscores are allowed. Colon is used as a scope separator. Spaces and other punctuation characters are not allowed. |
validation : string
Validation expression taking "this" and "value" as arguments and returning #f, a string id, or a list of format arguments if the facet is invalid.
Facets may have values tested against a validation script. The validation expression takes "this" (the current faceted object) and "value" (the value of the facet) as its arguments and returns #f, a string id, or a list of format arguments if the facet is invalid.
(if (not (number? value))
`("ids.numericValueError" ,value)
) ; where ids.numericValueError is "Facet must be numeric. '{0}' is not valid."
values : string
List of valid values. Set to () for no value validation.