The <subjectRole> element, when used within a <subjectRel> element, contains a set of subjects that are related to other subjects in the same row of the current <subjectRelTable>. By default, no relationship is defined between multiple subjects in the same <subjectRole> element. When used within the <subjectRelHeader>, the <subjectRole> element defines the category of subject or relationship provided by that column.
| Doctype | Content model |
|---|---|
| subjectScheme | ( (data or data-about or subjectdef or topicref or (anchorref or keydef or mapref or topicgroup or topichead or topicset or topicsetref) ) (any number) ) |
The subject relationship table in this example establishes environmentFor relationships between operating systems and applications. Based on the subjectRole element, subjects in the first column are operating systems which are the environment for an application, while subjects in the second column are applications that run in that environment. For a user interested in content about the operating system, content about the applications may also be relevant.
<subjectScheme>
<hasKind>
<subjectdef keys="operatingSystem">
<subjectdef keys="linuxOS"/>
<subjectdef keys="windowsOS"/>
</subjectdef>
<subjectdef keys="application">
<subjectdef keys="IDE">
<subjectdef keys="eclipseIDE"/>
<subjectdef keys="visualStudioIDE"/>
</subjectdef>
<subjectdef keys="webBrowser">
<subjectdef keys="firefoxBrowser"/>
<subjectdef keys="ieBrowser"/>
</subjectdef>
</subjectdef>
</hasKind>
...
<subjectRelTable>
<subjectRelHeader>
<subjectRole>
<subjectdef keyref="operatingSystem">
<hasRelated keyref="environmentFor">
<subjectdef keyref="application"/>
</hasRelated>
</subjectdef>
</subjectRole>
<subjectRole>
<subjectdef keyref="application"/>
</subjectRole>
</subjectRelHeader>
<subjectRel>
<subjectRole>
<subjectdef keyref="linuxOS"/>
<subjectdef keyref="windowsOS"/>
</subjectRole>
<subjectRole>
<subjectdef keyref="eclipseIDE"/>
<subjectdef keyref="firefoxBrowser"/>
</subjectRole>
</subjectRel>
<subjectRel>
<subjectRole>
<subjectdef keyref="windowsOS"/>
</subjectRole>
<subjectRole>
<subjectdef keyref="ieBrowser"/>
<subjectdef keyref="visualStudioIDE"/>
</subjectRole>
</subjectRel>
</subjectRelTable>
</subjectScheme>
<subjectdef keyref="operatingSystem"> <hasRelated keyref="environmentFor"> <subjectdef keyref="application"/> </hasRelated> </subjectdef> |
<subjectdef keyref="application"/> |
|---|---|
<subjectdef keyref="linuxOS"/> |
<subjectdef keyref="eclipseIDE"/> |
<subjectdef keyref="windowsOS"/> |
<subjectdef keyref="ieBrowser"/> |
| Name | Description | Data Type | Default Value | Required? |
|---|---|---|---|---|
| topicref-atts attribute group (collection-type, processing-role, type, scope, locktitle, format, linking, toc, print, search, chunk) | A set of related attributes. See topicref-atts, topicref-atts-no-toc, and topicref-atts-without-format attribute groups. | |||
| univ-atts attribute group (includes select-atts, id-atts, and localization-atts groups) | A set of related attributes, described in univ-atts attribute group | |||
| global-atts attribute group (xtrf, xtrc) | A set of related attributes, described in global-atts attribute group | |||
| class | A common attribute described in Other common DITA attributes |
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