case

conditional expression (same as if/elsif).
see if, when, zena 1.0

Example

<r:case>
  <r:when test='cardboard'>...the node has a 'cardboard' attribute...</r:when>
  <r:when test='paper'>...the node has a 'paper' attribute...</r:when>
  <r:else>...</r:else>
</r:case>

See if on how to create test clauses.

ClassCondition

You can replace <r:when> clauses with class conditions:

<r:case>
  <r:Project>...</r:Project>
  <r:Page>...</r:Page>
  <r:else>...</r:else>
</r:case>

Note that this is a special case of the ClassCondition because we are in a “case” scope (parent method is ‘case’). The difference is that here, only one scope will be executed (Project for example). But with normal class scopes, all matching scopes would run (Project & Page for example).