Constraints
A Constraint controls the input value of a property. Constraints can be used to validate the input values and to ensure certain predefined values for the properties. Constraints are defined separately from content types and aspects and referenced within a property type definition.
Constraint types
Alfresco provides four types of constraints out-of-the-box as follows. Apart from these, the custom constraints can be defined using Java Programming language.
REGEX: ensures that a property value matches a regular expression pattern
LIST: ensures that a property value is picked up from the list of predefined values
MINMAX: ensures that the given property value falls within a defined numeric range
LENGTH: ensures that the given property value falls within a defined character length range
REGEX
The following REGEX expression ensures that the property filename does not match the defined regular expression pattern. This constraint thus ensures that the file name value entered does not contain...
