Notice: This Wiki is now read only and edits are no longer possible. Please see: https://gitlab.eclipse.org/eclipsefdn/helpdesk/-/wikis/Wiki-shutdown-plan for the plan.
Difference between revisions of "Data Range"
(→Definition) |
|||
| Line 3: | Line 3: | ||
== Definition == | == Definition == | ||
| − | * The datatype of a | + | * The datatype of a value of an [[Attribute]] |
| − | * An | + | * An [[Attribute Value Datatype]] MAY specialize: |
| − | ** a base XML Schema type (e.g. String) for literal | + | ** a base XML Schema type (e.g. String) for literal [[Attribute Value Datatype]]s |
| − | ** OR a complex | + | ** OR a complex [[Attribute Value Datatype]] |
| − | ** OR another | + | ** OR another [[Attribute Value Datatype]] |
| − | * An | + | * An [[Attribute Value Datatype]]defines a set of constraints on its value(s) including: |
** Value must be one of {"red", "green", "blue"} | ** Value must be one of {"red", "green", "blue"} | ||
** Syntax constraints (e.g. regular expression) | ** Syntax constraints (e.g. regular expression) | ||
Revision as of 21:23, 7 February 2008
Introduction
This page describes the concept of an Attribute Value Datatype.
Definition
- The datatype of a value of an Attribute
- An Attribute Value Datatype MAY specialize:
- a base XML Schema type (e.g. String) for literal Attribute Value Datatypes
- OR a complex Attribute Value Datatype
- OR another Attribute Value Datatype
- An Attribute Value Datatypedefines a set of constraints on its value(s) including:
- Value must be one of {"red", "green", "blue"}
- Syntax constraints (e.g. regular expression)
- ranges (e.g. less than 5, more than 100)
- matching rules
Examples
- An Attribute might have a value whose Attribute Value Datatype was (XML Schema) string
- An Attribute might have a value whose Attribute Value Datatype was defined in the Contexts schema as "telephone number". This telephone number type might have a base type of (XML Schema) string, but might also have an XML Schema pattern restriction that constrained its syntax to be value in North America for auto-dialing (e.g. it is of the form (NNN)-NNN-NNNN)