Role Constraint

Overview

The RoleConstraints collection lists each constraint defined in the model. Every RoleConstraint element records its identifying details, participating roles, and optional arguments or join paths.

Attribute definitions – RoleConstraint element

• Id – Unique identifier for the role constraint.
• Name – Name assigned to the constraint.
• RoleConstraintType – Type of constraint (e.g. uniqueness, frequency, value comparison).
• RingConstraintType – Specifies the ring constraint category when the type is RingConstraint.
• Cardinality – Captures the cardinality range expression when applicable.
• IsDeontic – true when the constraint is deontic; otherwise false.
• CardinalityRangeType – Indicates the range style for cardinality or frequency constraints (LessThanOrEqual, Equal, GreaterThanOrEqual, or Between).
• MinimumFrequencyCount – Minimum bound for frequency constraints.
• MaximumFrequencyCount – Maximum bound for frequency constraints.
• IsPreferredIdentifier – true when the constraint supplies the preferred identification scheme for an entity type.
• ValueRangeType – For value comparison constraints, identifies the comparison operator (LessThan, LessThanOrEqual, GreaterThan, GreaterThanOrEqual).
• IsMDAModelElement – true when the constraint is part of an embedded non-FBM metamodel; otherwise false.

Supporting elements

• RoleConstraintRole – See RoleConstraintRole for the element that links constraints to specific roles.
• Argument / RoleConstraintArgument – Each argument lists the roles and join path that participate in the constraint logic.
• JoinPath – Captures the ordered sequence of roles traversed between the argument roles.
• RoleReference – References individual roles inside the argument or join path. When provided within a join path, the JoinPathError attribute conveys validation issues.

XSD text

<xs:element minOccurs="0" maxOccurs="unbounded" name="RoleConstraints">
  <xs:complexType>
    <xs:sequence>
      <xs:element minOccurs="0" maxOccurs="unbounded" name="RoleConstraint">
        <xs:complexType>
          <xs:sequence>
            <xs:element minOccurs="0" maxOccurs="unbounded" ref="RoleConstraintRole" />
            <xs:element name="Argument">
              <xs:complexType>
                <xs:sequence>
                  <xs:element name="RoleConstraintArgument">
                    <xs:complexType>
                      <xs:sequence>
                        <xs:element name="Role">
                          <xs:complexType>
                            <xs:sequence>
                              <xs:element name="RoleReference">
                                <xs:complexType>
                                  <xs:attribute name="RoleId" />
                                </xs:complexType>
                              </xs:element>
                            </xs:sequence>
                          </xs:complexType>
                        </xs:element>
                        <xs:element name="JoinPath">
                          <xs:complexType>
                            <xs:sequence>
                              <xs:element name="RolePath">
                                <xs:complexType>
                                  <xs:sequence>
                                    <xs:element name="RoleReference">
                                      <xs:complexType>
                                        <xs:attribute name="RoleId" />
                                      </xs:complexType>
                                    </xs:element>
                                  </xs:sequence>
                                </xs:complexType>
                              </xs:element>
                            </xs:sequence>
                            <xs:attribute name="JoinPathError" />
                          </xs:complexType>
                        </xs:element>
                      </xs:sequence>
                    </xs:complexType>
                  </xs:element>
                </xs:sequence>
              </xs:complexType>
            </xs:element>
          </xs:sequence>
          <xs:attribute name="Id" type="xs:string" />
          <xs:attribute name="Name" type="xs:string" />
          <xs:attribute name="RoleConstraintType" type="xs:string" />
          <xs:attribute name="RingConstraintType" type="xs:string" />
          <xs:attribute name="IsDeontic" type="xs:string" />
          <xs:attribute name="IsPreferredIdentifier" type="xs:string" />
          <xs:attribute name="CardinalityRangeType" type="xs:string" />
          <xs:attribute name="Cardinality" type="xs:string" />
          <xs:attribute name="MinimumFrequencyCount" type="xs:string" />
          <xs:attribute name="MaximumFrequencyCount" type="xs:string" />
          <xs:attribute name="ValueRangeType" />
          <xs:attribute name="IsMDAModelElement" />
        </xs:complexType>
      </xs:element>
    </xs:sequence>
  </xs:complexType>
</xs:element>