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Parent Package: archetype
Package am::archetype::constraint_model

The following statements summarise the main features of this package. Any archetype definition is an instance of a C_COMPLEX_OBJECT, which can be thought of as expressing constraints on a object that is of some particular type (recorded in the attribute rm_type_name ) in a reference model, and which is larger than a simple instance of a primitive type such as String or Integer. A C_COMPLEX_OBJECT consists of attributes of type C_ATTRIBUTE, which are constraints on the attributes (i.e. any property, including relationships) of the reference model type. Accordingly, each C_ATTRIBUTE records the name of the constrained attribute (in rm_attr_name), the existence and cardinality expressed by the constraint (depending on whether the attribute it constrains is a multiple or single relationship), and the constraint on the object to which this C_ATTRIBUTE refers via its children attribute (according to its reference model) in the form of further C_OBJECTs. The key subtypes of C_OBJECT, are C_COMPLEX_OBJECT (described above) C_PRIMITIVE_OBJECT (constraints on instances of primitive types such as String, Integer, Boolean and Date). The other subtypes of C_OBJECT, namely, ARCHETYPE_SLOT, ARCHETYPE_INTERNAL_REF and CONSTRAINT_REF are used to express, respectively, a `slot' where further archetypes can be used to continue describing constraints; a reference to a part of the current archetype that expresses exactly the same constraints needed at another point; and a reference to a constraint on a constraint defined in the archetype ontology, which in turn points to an external knowledge resource, such as a terminology. All nodes in an archetype constraint structure are instances of the supertype ARCHETYPE_CONSTRAINT, which provides a number of important common features to all nodes.

Inner Elements
Name	Type
ARCHETYPE_CONSTRAINT	Class
ARCHETYPE_INTERNAL_REF	Class
ARCHETYPE_SLOT	Class
C_ATTRIBUTE	Class
C_COMPLEX_OBJECT	Class
C_DEFINED_OBJECT	Class
C_DOMAIN_TYPE	Class
C_MULTIPLE_ATTRIBUTE	Class
C_OBJECT	Class
C_PRIMITIVE_OBJECT	Class
C_REFERENCE_OBJECT	Class
C_SINGLE_ATTRIBUTE	Class
CARDINALITY	Class
CONSTRAINT_REF	Class
primitive	Package
alternatives_exists	Constraint
Assumed_value_valid	Constraint
Assumed_value_valid	Constraint
Assumed_value_valid	Constraint
attributes_valid	Constraint
cardinality_validity	Constraint
children_validity	Constraint
Consistency	Constraint
consistency	Constraint
excludes_valid	Constraint
existence_set	Constraint
includes_valid	Constraint
item_exists	Constraint
members_valid	Constraint
node_id_valid	Constraint
path_exists	Constraint
reference_valid	Constraint
rm_attribute_name_valid	Constraint
rm_type_name_valid	Constraint
target_path_valid	Constraint
unnamed1	Constraint
unnamed1	Constraint
unnamed1	Constraint
unnamed1	Constraint
unnamed1	Constraint
unnamed1	Constraint
unnamed1	Constraint
unnamed1	Constraint
validity	Constraint
validity	Constraint