1、 Reference number ISO 10303-28:2007(E) ISO 2007INTERNATIONAL STANDARD ISO 10303-28 First edition 2007-10-01 Industrial automation systems and integration Product data representation and exchange Part 28: Implementation methods: XML representations of EXPRESS schemas and data, using XML schemas Systm
2、es dautomatisation industrielle et intgration Reprsentation et change de donnes de produits Partie 28: Mthodes dimplmentation: reprsentations XML de schmas et de donnes EXPRESS en utilisant des schmas XML ISO 10303-28:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance
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5、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 inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2007 All rights reserved. Unless otherwise spec
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7、ase postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2007 All rights reserved ISO 10303-28:2007(E) Contents Page 1 Scope. 1 2 Normative references 1 3 Terms, definitions, abbreviations, and conventions .
8、 2 3.1 Terms defined in ISO 10303-1 2 3.2 Terms defined in ISO 10303-11 2 3.3 Terms defined in the XML Standards. 4 3.4 Other terms and definitions. 5 3.5 Conflicting terminology 7 3.6 Abbreviations 7 3.7 Conventions 7 3.7.1 Text conventions 8 3.7.2 Namespace conventions. 8 4 Conformance. 8 4.1 Conf
9、ormance of an XML document . 9 4.1.1 Conformance of an iso-10303-28 document 9 4.1.2 Conformance of a uos document . 10 4.1.3 Conformance of a configured document . 10 4.2 Conformance of a derived XML schema document . 10 4.3 Conformance of a configuration file. 11 4.4 Conformance of a pre-processor
10、 . 11 4.5 Conformance of a post-processor 12 4.6 Conformance of an XML schema generator. 12 5 Document level elements 12 5.1 The iso-10303-28 document . 13 5.2 Document and uos header information . 14 5.2.1 The exp:header element. 14 5.2.2 The name element 15 5.2.3 The time_stamp element 15 5.2.4 Th
11、e author element 15 5.2.5 The organization element. 15 5.2.6 The authorization element . 15 5.2.7 The originating_system element 15 5.2.8 The preprocessor_version element 15 5.3 The schema_population element . 15 5.4 The express element . 17 5.4.1 By-reference representation of an EXPRESS schema. 18
12、 5.4.2 By-value representation of an EXPRESS schema. 18 5.5 The configuration element. 18 5.6 The unit of serialization element. 18 5.7 The uos document . 20 5.8 The configured document . 20 5.9 Enterprise data objects 20 6 Derived XML Schema 20 6.1 Preconditions. 21 6.2 Unmapped EXPRESS concepts 21
13、 6.3 Abstract entity data types 21 ISO 2007 - All rights reserved iii ISO 10303-28:2007(E) 7 Default XML Schema Binding. 22 7.1 Naming conventions . 22 7.1.1 Schema. 22 7.1.2 EXPRESS identifiers . 22 7.1.3 Data types 22 7.2 XML Schema data types corresponding to EXPRESS data types 22 7.2.1 EXPRESS s
14、imple data types 23 7.2.2 Aggregation data types 30 7.2.3 Constructed data types. 44 7.2.4 Defined data types . 45 7.2.5 ENTITY data types 45 7.3 XML Schema definitions and declarations for EXPRESS defined data types . 45 7.3.1 Simple underlying types 46 7.3.2 Aggregate underlying types. 47 7.3.3 EN
15、UMERATION underlying types 48 7.3.4 SELECT underlying types. 49 7.3.5 Defined data type underlying type. 53 7.4 Instance elements corresponding to EXPRESS data types . 54 7.4.1 Instance elements for simple data types. 55 7.4.2 Instance elements for anonymous aggregation data types. 59 7.4.3 Instance
16、 elements for defined data types . 62 7.4.4 Instance elements for entity data types 63 7.4.5 Instance element attributes. 63 7.4.6 Referenceable instances. 64 7.5 XML Schema definitions and declarations for EXPRESS entity data types 64 7.5.1 Type graph associated with the EXPRESS entity data type 65
17、 7.5.2 Complex entity instances. 66 7.5.3 Base XML data types and elements for EXPRESS entity data types 66 7.5.4 XML data type definitions for entity data types 69 7.5.5 Instance elements corresponding to entity data types 71 7.5.6 XML groups corresponding to entity data types 72 7.5.7 Single entit
18、y value elements corresponding to entity data types . 75 7.5.8 Proxy elements corresponding to entity data types 77 7.5.9 XML Uniqueness constraints for entity data types 78 7.6 XML Schema declarations for EXPRESS attributes 79 7.6.1 Accessor element and attribute naming . 79 7.6.2 EXPRESS attribute
19、s mapped to XML schema 80 7.6.3 Accessor elements . 81 7.7 XML Schema and namespaces for EXPRESS Schema 86 7.7.1 Namespace prefixes . 86 7.7.2 URI for the target namespace of the derived XML schema 87 7.7.3 Namespace declarations for the derived XML schema . 88 7.7.4 Import declarations for the deri
20、ved XML schema. 88 7.8 Context-schema specific unit of serialization . 89 8 Configured XML Schema Binding. 91 8.1 Naming conventions . 91 8.1.1 Schema. 91 8.1.2 EXPRESS identifiers . 91 8.1.3 Data types 91 8.2 XML Schema data types corresponding to EXPRESS data types 92 8.2.1 EXPRESS simple data typ
21、es 92 8.2.2 Aggregation data types 97 8.2.3 Constructed data types. 108 8.2.4 Defined data types . 108 iv ISO 2007 - All rights reserved ISO 10303-28:2007(E) 8.2.5 ENTITY data types 108 8.3 XML Schema definitions and declarations for EXPRESS defined data types . 108 8.3.1 Simple underlying types 109
22、 8.3.2 Aggregate underlying types. 111 8.3.3 ENUMERATION underlying types 112 8.3.4 SELECT underlying types. 112 8.3.5 Defined data type underlying type. 115 8.3.6 Defined data types mapped by map configuration directive 116 8.4 Instance elements corresponding to EXPRESS data types . 116 8.4.1 Insta
23、nce elements for simple data types. 117 8.4.2 Instance elements for anonymous aggregation data types. 120 8.4.3 Instance elements for defined data types . 124 8.4.4 Instance elements for entity data types 124 8.4.5 Instance element attributes. 124 8.4.6 XML identity-constraints for instance elements
24、 125 8.4.7 Referenceable instances. 128 8.5 XML Schema definitions and declarations for EXPRESS entity data types 129 8.5.1 Type graph associated with the EXPRESS entity data type 131 8.5.2 Complex entity instances. 131 8.5.3 Base XML data types and elements for EXPRESS entity data types 132 8.5.4 X
25、ML data type definitions for entity data types 134 8.5.5 Instance elements corresponding to entity data types 146 8.5.6 XML groups corresponding to entity data types 147 8.5.7 Single entity value elements corresponding to entity data types . 149 8.5.8 Proxy elements corresponding to entity data type
26、s 150 8.5.9 XML Identity constraints corresponding to entity data types 151 8.5.10 XML Uniqueness constraints for entity data types 154 8.5.11 Dynamic subtype elements corresponding to entity data types . 155 8.6 XML Schema declarations for EXPRESS attributes 156 8.6.1 Accessor element and attribute
27、 naming . 157 8.6.2 EXPRESS attributes mapped to XML schema 157 8.6.3 Accessor attributes. 159 8.6.4 Accessor elements . 163 8.6.5 Type-tagged attributes . 170 8.6.6 No-tag attributes 173 8.7 XML Schema and namespaces for EXPRESS Schema 174 8.7.1 Namespace prefixes . 175 8.7.2 URI for the target nam
28、espace of the derived XML schema 175 8.7.3 Namespace declarations for the derived XML schema . 175 8.7.4 Import declarations for the derived XML schema. 175 8.8 Context-schema specific unit of serialization . 176 9 XML document creation. 177 9.1 Preconditions. 177 9.2 General XML document structure
29、177 9.2.1 Structure of an iso-10303-28 document. 178 9.2.2 Structure of a uos document 178 9.2.3 Encoding of EXPRESS schemas . 179 9.2.4 Encoding of configuration files . 179 9.2.5 Encoding of population definitions 180 9.2.6 Encoding of data sets the unit of serialization 180 9.3 Representation of
30、EXPRESS entity instances. 183 9.3.1 By-value representation of entity instances . 184 9.3.2 External representation of EXPRESS entity instances 187 9.3.3 By-reference representation of EXPRESS entity instances. 189 ISO 2007 - All rights reserved v ISO 10303-28:2007(E) 9.3.4 Complex entity representa
31、tion of EXPRESS entity instances. 190 9.4 Representation of an EXPRESS attribute . 192 9.4.1 Determining by-reference or by-value representation . 192 9.4.2 Representation of EXPRESS attribute value as accessor attribute 193 9.4.3 Attribute-tag representation of EXPRESS attribute value. 194 9.4.4 Do
32、uble-tag representation of EXPRESS attribute value . 196 9.4.5 Type tag representation of EXPRESS attribute value . 197 9.4.6 No-tag representation of entity instance as EXPRESS attribute value 198 9.4.7 No-tag-simple representation of entity instance as EXPRESS attribute value 198 9.5 Representatio
33、n of simple values 198 9.5.1 Representation of BINARY values 199 9.5.2 Representation of BOOLEAN values 199 9.5.3 Representation of INTEGER values 199 9.5.4 Representation of LOGICAL values . 200 9.5.5 Representation of NUMBER values 201 9.5.6 Representation of REAL values 201 9.5.7 Representation o
34、f STRING values 202 9.6 Representation of enumeration items 203 9.7 Representation of values of SELECT types 204 9.8 Representation of aggregate values. 206 9.8.1 List-of-values representation of aggregate values . 207 9.8.2 Sequence-of-elements representation of aggregate values 209 9.8.3 Indexed r
35、epresentation of aggregate values. 210 9.8.4 List-of-references representation of aggregate values . 211 9.8.5 Aggregates of aggregate values . 212 9.8.6 Aggregates of values of defined data types . 219 9.8.7 Instance elements for component values . 219 9.9 Representation of values of defined data t
36、ypes. 220 9.10 Representation of values in instance elements 221 9.10.1 By-value instance elements for non-entity data types . 222 9.10.2 By-reference instance elements for non-entity data types . 223 10 Configuration Language.223 10.1 The configuration element. 225 10.1.1 By-reference representatio
37、n of a configuration file . 226 10.1.2 By-value representation of a configuration file . 226 10.2 Configuration options . 226 10.2.1 name. 227 10.2.2 exp-type . 227 10.2.3 content 227 10.2.4 aggregate-content. 228 10.2.5 exp-attribute. 228 10.2.6 entity-attribute 229 10.2.7 concrete-attribute . 229
38、10.2.8 tagless 229 10.2.9 flatten . 230 10.2.10 use-id. 230 10.2.11 keep. 231 10.2.12 keep-all . 231 10.2.13 map . 232 10.2.14 naming-convention . 234 10.2.15 inheritance. 234 10.2.16 notation . 234 10.2.17 tag-source and tag-value . 234 10.2.18 namespace. 235 vi ISO 2007 - All rights reserved ISO 1
39、0303-28:2007(E) 10.2.19 ref 236 10.2.20 use. 236 10.2.21 implementation . 236 10.2.22 facet. 237 10.2.23 generate-keys 237 10.2.24 embed-schema-items 238 10.2.25 alias and prefix 238 10.2.26 select . 238 10.3 Scoping elements 239 10.3.1 Option element. 240 10.3.2 Type element . 240 10.3.3 Entity ele
40、ment 241 10.3.4 Attribute element . 246 10.3.5 Inverse element 248 10.3.6 Aggregate element . 250 10.3.7 Schema element . 251 10.3.8 UosElement element 255 10.3.9 UosEntity element . 255 10.3.10 RootEntity element . 255 10.4 Configuration attributes 256 10.5 Applicability of configuration directives
41、 257 10.5.1 exp-attribute. 257 10.5.2 content and use-id 259 10.5.3 exp-type . 260 10.5.4 map 260 10.5.5 tagless 261 10.5.6 flatten . 261 10.5.7 inheritance 262 10.5.8 notation 262 10.5.9 keep 262 10.5.10 ref 262 10.5.11 use. 262 10.5.12 implementation . 263 10.5.13 facet. 263 Annex A (normative) Un
42、iversal Resource Names for bindings of EXPRESS schemas. 264 Annex B (normative) XML Schema for the configuration language 265 Annex C (normative) Base XML Schema 272 Annex D (normative) Document Schema . 280 Annex E (normative) Valid populations of EXPRESS entity instances . 291 Annex F (normative)
43、Information object registration . 302 Annex G (informative) Configuration language examples 303 Bibliography. 307 Index. 308 ISO 2007 - All rights reserved vii ISO 10303-28:2007(E) Figures Figure 1 - Choice group. 73 Figure 2 - Choice group for inheritance mapping . 148 Tables Table 1 Namespace pref
44、ixes. 8 Table 2 Subclause governing aggregation data type correspondence 30 Table 3 Subclause governing aggregation data type correspondence 99 Table 4 Instance elements for STRING data types mapped to XML data types 120 Table 5 XML key names for anonymous EXPRESS data types 127 Table 6 Representati
45、on of EXPRESS characters invalid in XML normalizedString 203 Table 7 Subclause governing XML representation of aggregate value . 207 Table 8 Subclause governing XML representation of aggregates of aggregate values . 213 Table 9 Pattern strings for select 239 viii ISO 2007 - All rights reserved ISO 1
46、0303-28:2007(E) Foreword ISO 2007 - All rights reserved ix 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
47、 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 Internationa
48、l Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/ IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standard
49、s adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75% of the member bodies casting a vote. 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. ISO 10303-28 was prepared by Technical Committee ISO TC184, Industrial automation systems and integration, Subcommittee SC4 Industrial data.
