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(Quick Reference)



Ensures a value does not exceed a maximum value.


age max: new Date()
price max: 999F


Sets the maximum value of a class that implements java.lang.Comparable. The type of the value must be the same as the property.

Note that constraints are only evaluated once which may be relevant for a constraint that relies on a value like an instance of java.util.Date.

class User {

    static constraints = {
        // this Date object is created when the constraints are evaluated, not
        // each time an instance of the User class is validated.
        birthDate max: new Date()

This constraint influences schema generation.

Error Code: className.propertyName.max.exceeded