ISO 10303-22

ISO 10303-22 is a part of the implementation methods of STEP with the official title Standard data access interface or simply SDAI.

SDAI defines an abstract Application Programming Interface (API) to work on application data according to a given data models defined in EXPRESS. SDAI itself is defined independent of a particular programming language. Language bindings exist for

Part 23 - C++ language binding of the standard data access interface
Part 24 - C binding of the standard data access interface
Part 27 - Java binding to the standard data access interface with Internet/Intranet extensions
The development of language bindings for FORTRAN and the interface definition language (IDL) of CORBA were canceled.

The original intent of SDAI and its bindings to programming languages was to achieve portability of software applications from one implementation to another. This was soon abandoned because there were only a few commercial implementations and they differed significantly in their detailed APIs. Today the term SDAI is sometimes used for all kinds of APIs supporting STEP, even if they only partially follow the strict functionality as defined in ISO 10303-22 and its implementation methods, or not at all. Part 35 of STEP (Abstract test methods for SDAI implementations) provides a formal way how to prove the conformance of an implementation with SDAI.

The main components of SDAI are:

SDAI dictionary schema, a meta level EXPRESS schema to describe EXPRESS schemas
Managing objects
- SDAI session to control the whole SDAI environment for a single user/thread including optional transaction control
- SDAI repository the physical (typically) container to store SDAI models and Schema instances, e.g. a database
- SDAI model a subdivision of an SDAI repository, containing entity instance according to a particular EXPRESS schema
- Schema instance a logical grouping of one or several SDAI models, making up a valid population according to a particular EXPRESS schema
Operations
- to deal with the managing objects
- to create, delete and modify application data (entity instance, attribute values, aggregates and their members)
- to validate application data according to all the constraints and rules specified in EXPRESS

Major software vendors for SDAI and similar STEP-APIs

EPM Technology
Eurostep
LKSoftWare GmbH / JSDAI
PDTec AG: The Ecco Toolkit provides implementation of ISO 10303-11, -14, -21, -28.
STEP Tools, Inc

Open-source implementations of SDAI

The NIST STEP Class Library is a public domain implementation of ISO 10303-21(ASCII data exchange files), -22(SDAI), -23 (C++ SDAI binding) using ISO 10303-11:1994. The development of the NIST STEP Class Library has been stopped in the late 1990s.^[1] SCL has been improved by the BRL-CAD developers and on github under the BSD license. SCL also has an experimental Python binding.

JSDAI is a complete implementation of ISO 10303-22 and ISO 10303-27 under the Open Source license AGPL.

ISO standards by standard number

List of ISO standards / ISO romanizations / IEC standards

1–9999	1 2 3 4 5 6 7 9 16 31 -0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 128 216 217 226 228 233 259 269 302 306 428 518 519 639 -1 -2 -3 -5 -6 646 690 732 764 843 898 965 1000 1004 1007 1073-1 1413 1538 1745 1989 2014 2015 2022 2047 2108 2145 2146 2240 2281 2709 2711 2788 2852 3029 3103 3166 -1 -2 -3 3297 3307 3602 3864 3901 3977 4031 4157 4217 4909 5218 5428 5775 5776 5800 5964 6166 6344 6346 6385 6425 6429 6438 6523 6709 7001 7002 7098 7185 7200 7498 7736 7810 7811 7812 7813 7816 8000 8178 8217 8571 8583 8601 8632 8652 8691 8807 8820-5 8859 -1 -2 -3 -4 -5 -6 -7 -8 -8-I -9 -10 -11 -12 -13 -14 -15 -16 8879 9000/9001 9075 9126 9293 9241 9362 9407 9506 9529 9564 9594 9660 9897 9899 9945 9984 9985 9995

10000–19999	10005 10006 10007 10116 10118-3 10160 10161 10165 10179 10206 10218 10303 -11 -21 -22 -28 -238 10383 10487 10585 10589 10646 10664 10746 10861 10957 10962 10967 11073 11170 11179 11404 11544 11783 11784 11785 11801 11898 11940 (-2) 11941 11941 (TR) 11992 12006 12182 12207 12234-2 13211 -1 -2 13216 13250 13399 13406-2 13450 13485 13490 13567 13568 13584 13616 14000 14031 14224 14289 14396 14443 14496 -2 -3 -6 -10 -11 -12 -14 -17 -20 14644 14649 14651 14698 14750 14764 14882 14971 15022 15189 15288 15291 15292 15398 15408 15444 -3 15445 15438 15504 15511 15686 15693 15706 -2 15707 15897 15919 15924 15926 15926 WIP 15930 16023 16262 16612-2 16750 16949 (TS) 17024 17025 17203 17369 17442 17799 18000 18004 18014 18245 18629 18916 19005 19011 19092 (-1 -2) 19114 19115 19125 19136 19439 19500 19501 19502 19503 19505 19506 19507 19508 19509 19510 19600:2014 19752 19757 19770 19775-1 19794-5 19831

20000+	20000 20022 20121 21000 21047 21500 21827:2002 22000 23270 23271 23360 24517 24613 24617 24707 25178 25964 26000 26300 26324 27000 series 27000 27001:2005 27001:2013 27002 27006 27729 28000 29110 29148 29199-2 29500 30170 31000 32000 38500 40500 42010 80000 -1 -2 -3

Category

References

↑ Thompson, Kristy (2010-10-28). "STEP Class Library (SCL)". Retrieved 2016-09-22.

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ISO 10303-22

Major software vendors for SDAI and similar STEP-APIs

Open-source implementations of SDAI

See also

References