How to get all the persistent properties of a grails Domain Class along with their constraints in a single Collection?

Question

I need to get all the information about a particular Grails domain class, i.e. the persistent properties and the constraints related to them in a single collection. How do I do that?

Answer 1

As of grails 3.3, the accepted answer is no longer correct. DefaultGrailsDomainClass is now deprecated and the single argument constructor will throw an Exception that mappingContext is not yet initialized.

Inject the grailsDomainClassMappingContext bean and get the PersistentEntity with

def persistentEntity = grailsDomainClassMappingContext.getPersistentEntity(MyDomain.class.name)
def propertyList = persistentEntity.getPersistentProperties()

Answer 2

The following with get you a map with the property name as key and a map of constraints as values, works in Grails 3:

def d = new DefaultGrailsDomainClass(MyDomain.class)

def pp = d.persistentProperties.collectEntries {
    [it.name, d.constrainedProperties[it.name]?.appliedConstraints ]
}