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Structuring of Services in the Registry .doc
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Structuring of Services in the Registry .
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Structuring of Services in the Registry
It is possible to store a huge number of entities in a productive registry. You need a system
with which you can structure these datasets. Categorization provides one such option for
structuring data. Categories are entities that are characterized through a set of features that
are common to all their elements.
For example, different services are registered in a registry. They all serve the same function
but are available in different languages. The distinguishing feature in this case would be the
language. Other categories, in relation to the SAP environment, would be the Deployment
Unit, Process Component, and so on.
By categorizing data, you make it possible to search in the respective datasets in the same
way as you would in a catalog – provided an appropriate user interface is available.
You can also combine categories and implement them as categorization groups. This option
is used in the Services Registry. In this way, you can speed up the search for services and
simplify it through the combination of different categories.
SAP uses the value set concept to technically implement categories. Value sets are part of
the UDDI standard and are used to model categories, categorization groups, and their
relationships.
This concept is explained in detail in Providing a Value Set for Use in
UDDI Version 3 (OASIS - Committees - OASIS UDDI Specifications TC).
Classification Service
To support classification and browsing in the user interfaces, the Services Registry requires
an additional classication service, which is not part of the UDDI standard. This
service provides to the UI the meta data on different classification systems, and thecontent of
each classification system. This includes the possible values, with descriptive text and
hierarchical structural information, where applicable. The classification service supports the
dynamic addition of values to a classification system.
The Classification Service APIs are part of the Services Registry APIs. You can use them for
the following tasks:
● Retrieve the list of supported classification systems, and their related metadata
● Retrieve the entire content of a classification system
● Publish classification systems and classification system values
● Delete classification systems and classification system values
The Classification Service recognizes three different types of classification systems:
Type Meaning
Flat list A flat classification system is simply a flat list
of codes. If you select a flat classification
system in the SR, you get a result list with all
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