ISO/TS 10303-17:2022
(Main)Industrial automation systems and integration — Product data representation and exchange — Part 17: Description methods: EXPRESS to SysML CXMI transformation
Industrial automation systems and integration — Product data representation and exchange — Part 17: Description methods: EXPRESS to SysML CXMI transformation
This document specifies a mapping of EXPRESS (ISO 10303–11) constructs to SysML constructs for the purpose of representing EXPRESS schemas in SysML models. The specified mapping is a one-way transformation from an EXPRESS schema to a SysML information model. The following are within the scope of this document: — the specification of the transformation of EXPRESS constructs to SysML constructs represented in CXMI; — the specification of the transformation of EXPRESS UNIQUE rules to SysML constructs represented in CXMI; — the specification of the transformation of derived attributes to implement renaming to SysML constructs represented in CXMI. The following are outside the scope of this document: — the transformation of EXPRESS elements into SysML metamodel constructs that are not used in the STEP Extended Architecture; — transformation of EXPRESS FUNCTIONS; — transformation of EXPRESS-G to SysML diagrams; — tools, codes, and scripts to transform an EXPRESS schema to SysML CXMI; — transformation of EXPRESS interface specification; — SysML constraints transformation from EXPRESS DERIVE attributes, except the ones used for renaming; — SysML constraints transformation from EXPRESS SUPERTYPE expressions; — SysML constraints transformation from EXPRESS GLOBAL rules; — SysML constraints transformation from EXPRESS WHERE rules. NOTE EXPRESS DERIVE attributes, EXPRESS SUPERTYPE expressions, EXPRESS GLOBAL rules and EXPRESS WHERE rules are transformed into OCL specifications. OCL specifications are integrated in the SysML model based on a separate process.
Systèmes d'automatisation industrielle et intégration — Représentation et échange de données de produits — Partie 17: Méthodes de description: Transformation EXPRESS vers SysML CXMInque
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TECHNICAL ISO/TS
SPECIFICATION 10303-17
First edition
2022-03
Industrial automation systems
and integration — Product data
representation and exchange —
Part 17:
Description methods: EXPRESS to
SysML CXMI transformation
Systèmes d'automatisation industrielle et intégration —
Représentation et échange de données de produits —
Partie 17: Méthodes de description: Transformation EXPRESS vers
SysML CXMInque
Reference number
© ISO 2022
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and abbreviated terms . 2
3.1 Terms related to generic concepts . 2
3.2 Terms related to EXPRESS constructs . 3
3.3 Terms related to SysML constructs . 4
3.4 Abbreviated terms . 6
4 EXPRESS to SysML CXMI. 6
4.1 General . 6
4.2 Presentation conventions . 7
4.3 Common mapping conventions . 8
4.3.1 Reference to external files . 8
4.3.2 Treatment of Xmi:id, xmi:uuid, and UUID . 8
4.3.3 Assumed sysml:Block in fragments . 8
4.3.4 Containment and reference relationships . 9
4.3.5 Used stereotypes to represent EXPRESS concepts . 9
4.3.6 Select type and supertype . 9
4.4 Mapping of a schema . 9
4.5 Mapping of entities . 10
4.5.1 General mapping of an entity . 10
4.5.2 Mapping of abstract supertype . 10
4.5.3 Mapping of entity with one supertype . 11
4.5.4 Mapping of entity with multiple supertypes . 11
4.5.5 Constraints between subtypes .12
4.5.6 Mapping of entity attribute .12
4.5.7 Local rules . 19
4.6 Mapping of global rules . 19
4.7 Mapping of type . 20
4.7.1 Mapping of simple type .20
4.7.2 Mapping of aggregation types . 22
4.7.3 Mapping of nested of aggregation types . 25
4.7.4 Mapping of select type .30
4.7.5 Proxy artefact .33
4.7.6 Mapping of enumeration type . 33
Annex A (normative) Information object registration .36
Annex B (informative) EXPRESS / Information modelling constructs and the equivalent
SysML modelling constructs . .37
Bibliography . 44
iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 184, Automation systems and
integration, Subcommittee SC 4, Industrial data.
A list of all parts in the ISO 10303 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
The ISO 10303 series of international standards describe the computer-interpretable representation of
product information in the exchange of product data. The objective is to provide a neutral mechanism
capable of describing product data throughout the life cycle of a product and independent from any
particular system. The nature of this description makes it suitable not only for neutral file exchange,
but also as a basis for implementing and sharing product databases and archiving.
The EXPRESS language and the EXPRESS-G diagrams are specified in ISO 10303-11. It is used to specify
the information requirements of other parts of the ISO 10303 series.
This document is a member of the description methods series. This document specifies a mapping of
[9][10][11]
EXPRESS to SysML CXMI. This document supports the STEP Extended Architecture .
The Object Management Group (OMG) has standardized the XML Metadata Interchange specification
(XMI), and the Canonical XML Metadata Interchange specification (CXMI) that integrates the OMG
Systems Modeling Language (SysML), the OMG Unified Modeling Language (UML), and the World Wide
[12]
Web Consortium (W3C) Extensible Mark-up Language (XML) . SysML inherits the CXMI interchange
capability from UML. CXMI is a mechanism for the interchange of metadata and formal diagrams
between UML-based modeling tools. OMG has also standardized an CXMI compliant interchange
format for the SysML thus specifying a lexical representation of SysML models based on a standardized
metamodel of the SysML.
This document specifies a description method of the STEP parts family, which defines the
transformation of a subset of EXPRESS constructs to SysML. Because the CXMI standard specifies the
XML representation of SysML metamodel constructs, standardizing the mapping of EXPRESS constructs
into SysML constructs supports the representation of EXPRESS schemas as SysML models.
The specified mapping is a one-way transformation from a subset of an EXPRESS schema to a SysML
model represented by an CXMI specification. These limitations make the mapping unsuitable for the
transformation of arbitrary EXPRESS schemas to SysML models.
A detailed knowledge of the of the EXPRESS and SysML languages is useful.
v
TECHNICAL SPECIFICATION ISO/TS 10303-17:2022(E)
Industrial automation systems and integration — Product
data representation and exchange —
Part 17:
Description methods: EXPRESS to SysML CXMI
transformation
1 Scope
This document specifies a mapping of EXPRESS (ISO 10303–11) constructs to SysML constructs for
the purpose of representing EXPRESS schemas in SysML models. The specified mapping is a one-way
transformation from an EXPRESS schema to a SysML information model.
The following are within the scope of this document:
— the specification of the transformation of EXPRESS constructs to SysML constructs represented in
CXMI;
— the specification of the transformation of EXPRESS UNIQUE rules to SysML constructs represented
in CXMI;
— the specification of the transformation of derived attributes to implement renaming to SysML
constructs represented in CXMI.
The following are outside the scope of this document:
— the transformation of EXPRESS elements into SysML metamodel constructs that are not used in the
[9][10][11]
STEP Extended Architecture ;
— transformation of EXPRESS FUNCTIONS;
— transformation of EXPRESS-G to SysML diagrams;
— tools, codes, and scripts to transform an EXPRESS schema to SysML CXMI;
— transformation of EXPRESS interface specification;
— SysML constraints transformation from EXPRESS DERIVE attributes, except the ones used for
renaming;
— SysML constraints transformation from EXPRESS SUPERTYPE expressions;
— SysML constraints transformation from EXPRESS GLOBAL rules;
— SysML constraints transformation from EXPRESS WHERE rules.
NOTE EXPRESS DERIVE attributes, EXPRESS SUPERTYPE expre
...
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