Adding User Classes at Run Time (PARs 58867, 58940)

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Adding User Classes at Run Time

Your user applications can add user classes at run time. While these user-defined classes are visible in the JADE development environment, they are not considered as part of the JADE model, you cannot reference them directly in JADE methods, they are not extracted, reorganized, and so on.

You cannot add properties to user classes in the JADE development environment. You can only define runtime dynamic properties on user classes. Instances of any lifetime can be created (that is, persistent, transient, and shared‑transient lifetimes).

The following table summarizes the classes and methods that enable you to maintain user classes.

Class	Method	Description
Schema	addUserCollectionSubclass	Creates a user collection class as a subclass of the specified superclass in the receiving schema
Schema	addUserSubclass	Creates a user class as a subclass of the specified superclass in the receiving schema
Schema	deleteUserSubclass	Deletes a user class from the specified superclass in the receiving schema
JadeUserCollClass	addExternalKey	Adds an external key definition to a user class at run time
JadeUserCollClass	addMemberKey	Adds a member key definition to a user class at run time
JadeUserCollClass	clearKeys	Clears existing key definitions
JadeUserCollClass	endKeys	Indicates the end of a single or multiple key definition
JadeUserCollClass	setLength	Sets or changes the element length for an array
JadeUserCollClass	setMembership	Sets or changes the membership of a user class at run time

For details, see volumes 1 and 2 of the JADE Encyclopaedia of Classes. See also "Adding User Classes at Run Time", in Chapter 21 of the JADE Developer's Reference.