Language reference : Base architecture : Classification elements : Classification domain elements : topicCell
   
topicCell
The <topicCell> element contains topics that will be associated with subjects in each following column of the current row in the <topicSubjectTable>.
Contains
Note: These models represent only the default document types distributed by OASIS. Actual content models will differ with each new document type.
Doctype
Content model
classifyMap
( (data or data-about or topicref or (topicsubject or topicapply) or (anchorref or keydef or mapref or topicgroup or topichead or topicset or topicsetref) ) (one or more) )
Contained by
Doctype
Content model
classifyMap
Inheritance
+ map/relrow classify-d/topicSubjectRow
Example 183. Example
The topic subject table below classifies topics with goals for retrieval and with operating systems for filtering. The map makes use of definitions in a subject scheme map, defined separately.
Figure 56. Subject scheme map
<subjectScheme>
<hasKind>
<subjectdef href="goalType.dita" keys="goal">
<subjectdef href="performanceGoal.dita" keys="performance"/>
<subjectdef href="reliabilityGoal.dita" keys="reliability"/>
</subjectdef>
<subjectdef href="operatingSystem.dita" keys="os">
<subjectdef href="linuxOS.dita" keys="linux"/>
<subjectdef href="unixOS.dita" keys="unix"/>
<subjectdef href="windowsOS.dita" keys="windows"/>
</subjectdef>
</hasKind>
</subjectScheme>
Figure 57. Topic subject table
The following <topicSubjectTable> classifies several topics according to subjects in the previous map. As with any <topicSubjectTable>, the first column is used to specify topics. In this specific example, the second column is used to specify a goal, based on the "goal" subject in the header. The third column is used to specify an operating system. Based on those definitions, the following classifications are made by this table:
The topics "Configuring cron for efficient startup" and "Allocating raw storage" are each classified by the goal of "performance"; in addition, they are classified by the operating systems "linux" and "unix.
The topics "Analyzing web logs for service issues" and "Detecting denial-of-service attacks" are each classified by the goal of "reliability"; in addition, they are classified by the operating systems "linux", "unix", and "windows".
No relationship is defined between subjects in the table, meaning that this table does not define any relationship between the goal of "performance" and the operating systems "linux" or "unix".
<map>
...
<topicSubjectTable>
<topicSubjectHeader>
<topicCell type="task"/>
<subjectCell>
<topicsubject keyref="goal"/>
</subjectCell>
<subjectCell>
<topicapply keyref="os"/>
</subjectCell>
</topicSubjectHeader>
<topicSubjectRow>
<topicCell>
<topicref href="webServerStart.dita" navtitle="Configuring cron for efficient startup"/>
<topicref href="dbDisk.dita" navtitle="Allocating raw storage"/>
</topicCell>
<subjectCell>
<topicsubject keyref="performance"/>
</subjectCell>
<subjectCell>
<topicapply keyref="linux"/>
<topicapply keyref="unix"/>
</subjectCell>
</topicSubjectRow>
<topicSubjectRow>
<topicCell>
<topicref href="webLogAnalyze.dita" navtitle="Analyzing web logs for service issues"/>
<topicref href="webDenialService.dita" navtitle="Detecting denial-of-service attacks"/>
</topicCell>
<subjectCell>
<topicsubject keyref="reliability"/>
</subjectCell>
<subjectCell>
<topicapply keyref="linux"/>
<topicapply keyref="unix"/>
<topicapply keyref="windows"/>
</subjectCell>
</topicSubjectRow>
...
</topicSubjectTable>
</map>
A table view of this <topicSubjectTable> might look as follows. This is only one of many possible views; to aid in understanding the example, the content topics in the first column are displayed using only their titles, and related subjects are displayed using only their keyref attribute value.
task
goal
os
Configuring cron for efficient startup

Allocating raw storage
performance
linux
unix
Analyzing web logs for service issues

Detecting denial-of-service attacks
reliability
linux
unix
windows
Attributes
Name
Description
Data Type
Default Value
Required?
univ-atts attribute group (includes select-atts, id-atts, and localization-atts groups)
A set of related attributes, described in univ-atts attribute group
topicref-atts attribute group (collection-type, processing-role, type, scope, locktitle, format, linking, toc, print, search, chunk)
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