Allow for conditional template output based on conditions specified in
cartridge.xml
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Key: CORE-100
URL: http://jira.andromda.org/browse/CORE-100
Project: AndroMDA Core
Type: Improvement
Versions: 3.2 RC2
Reporter: Joel Kozikowski
Assigned to: Chad Brandon
Priority: Minor
Currently, a template's output can be suppressed by wrapping an #if statement
around the entire template contents, and setting the <template> attribute
outputOnEmptyElements to false. This requires a developer to examine the
contents of the template file for conditions of output (if any). Specifying
this in the <template> definiiton instead allows for easier enhancements to the
cartridge (only the cartridge.xml needs to be modified, not the template), as
well as offers a single place for a developer to look at when trying to
determine when a template will or will not be output. A <modelElement> can
contain a <property> that must match a metafacade's property before output will
take place. That handles the specific case of a basing output on the property
of a metafacade, but does not handle the more general case of basing the output
on a generic property (such as a namespace property). Ideally, there would be a
new <outputConditions> element that could contain conditions that must be met
before the template would be output (e.g. only output template if namespace
property X equals value "Y").
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