ISO INTERNATIONAL STANDARD 10303-14 First edition 2005-10-01 Industrial automation systems and integration Product data representation and exchange - Part 14: Description methods: The EXPRESS-X language reference manual Systemes dautomatisation industrielle et integrationReprésentation etéchangededonneesdeproduits- Partie 14: Methodes descriptives: Le manuel de reference du langage EXPRESS-X Reference number ISO 10303-14:2005(E) @ISO2005 ISO 10303-14:2005(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please infom the Central Secretariat at the address given below. ISO2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56·CH-1211Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland ii @ ISO 2005 - All rights reserved ISO 10303-14:2005(E) Contents Scope 2 Normativereferences Terms and Definitions ... 3 Terms defined in ISO 10303-1... 3.2 Terms defined in ISO 10303-11.... Other definitions... Fundamental principles .. 4.1Overview... 4.2 Fundamental principles of the execution model . 4.2.1 Overview ... 4.2.2 Binding process ... 4.2.3 Instantiation process ... 6 4.3 Implementation environment... 8 Conformance requirements ... 5 5.1EXPRESS-X conformance classes .... 5.1.1 Overview ... 5.1.2EXPRESS-X parser conformance classes 5.1.3 EXPRESS-X mapping engine conformance classes ... 5.1.4 Consistency checking of EXPRESS-X parsers ... 6 Language specification syntax ... 10 Basic language elements ... 7.1 Overview... 7.2 Reserved words.... Data types ... 8.1 Overview... 12 8.2 View data type.... 12 9 Declarations 9.1 Overview... 12 9.2 Binding .. 13 9.2.1 Overview 9.2.2 Binding extent 9.2.3 Qualification of thebinding extent ... 9.2.4 Identification of view and target instances. 9.2.5 Equivalence classes and the instantiation process ... 16 9.2.6 Orderingofviewandtargetinstances 9.3 View declaration ... 18 9.3.1 18 Overview 9.3.2 View attributes . 18 9.3.3 19 View partitions 9.3.4 Constant partitions .. 20 9.3.5 Dependent views 20 9.3.6 Specifying subtype views .21 9.3.7 Supertype constraints 22 9.4 Map declaration. 23 9.4.1 Overview 23 9.4.2 Evaluation of the map body .24 9.4.3 Iteration under a single binding instance .24 .27 9.4.4 Map partitions .. 9.4.5 Mapping to a type and its subtypes 28 ISO2005—All rights reserved ili ISO10303-14:2005(E) 9.4.6Explicit declaration of complex entity data types ... 31 9.4.7 Dependent map ... 33 9.5 Schema view declaration..... 34 9.6 Schema map declaration .... 34 9.7 Local declaration... 36 9.8 Constant declaration... 37 9.9 Function declaration.... 37 9.10 Procedure declaration... 37 37 9.11 Rule declaration .... 10 Expressions 37 10.1 Overview 37 10.2 View call 39 10.3 Map call.. 41 10.4 Partial binding calls.. 43 10.5 FOR expression.. 44 10.6 IF expression ... 47 CASE expression .. 47 10.7 10.8 Forwardpath operator... 48 10.9 Backward path operator ... 49 11 Built-in functions 51 11.1 Extent - general function.. 51 12 Scope and visibility 51 12.1 Overview. 51 12.2 Schema view . 52 12.3 Schema map. 53 12.4 View and dependent view . 53 View partition label... 53 12.5 View attribute identifier. 53 12.6 FOR expressi