Eclipse Community Forums: M2T (model-to-text transformation)

Help

Home

Home » Modeling » M2T (model-to-text transformation) » Use polymorphism with 2 xpand file

Show: Today's Messages :: Show Polls :: Message Navigator

Use polymorphism with 2 xpand file [message #522712]

Tue, 23 March 2010 17:23

Christophe

Messages: 15
Registered: July 2009

Junior Member

Hi all,

How to use pollymorphism with the 2 distinct xpt file ? Thanks.

** Assumptions **
- A is a mother class
- B is a child class of A
- The code depending on B must be located in an separate .xpt file
- The code of A must be isolated (no reference to B templates)

The objective is to implement the following sample:

«DEFINE someOtherDefine FOR SomeMetaClass»
«EXPAND implClass FOREACH listOfAs»
«ENDDEFINE»

«DEFINE implClass FOR A»
// specific code for A
«ENDDEFINE»

«DEFINE implClass FOR B»
// specific code for B
«ENDDEFINE»

BR.

Report message to a moderator

Re: Use polymorphism with 2 xpand file [message #522846 is a reply to message #522712]

Wed, 24 March 2010 08:23

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

Hello you can call another template in anothfile like this

«DEFINE implClass FOR A»
«EXPAND path::to::otherTemplateFile::otherDefinition FOR this»
«ENDDEFINE»

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

[Updated on: Wed, 24 March 2010 08:23]

Report message to a moderator

Re: Use polymorphism with 2 xpand file [message #522853 is a reply to message #522846]

Wed, 24 March 2010 08:50

Christophe

Messages: 15
Registered: July 2009

Junior Member

Thanks, but in your proposition, the following assumption is not respected :
"The code of A must be isolated (no reference to B templates)".

Regards.

Report message to a moderator

Re: Use polymorphism with 2 xpand file [message #522859 is a reply to message #522712]

Wed, 24 March 2010 08:58

MaximeLecourt

Messages: 108
Registered: February 2010
Location: France

Senior Member

Could you give us an example ?
I don't think I understand what you need.

in my current project, I use that, which seems to be what you need

			«FOREACH attributes() AS a-»
				private «EXPAND typeJava::tojava FOR a.type» «a.name»;
			«ENDFOREACH»

and in typejava file

«DEFINE tojava FOR Typedef»«EXPAND tojava FOR this.reftype»«ENDDEFINE»
«DEFINE tojava FOR GInteger»int«ENDDEFINE»
«DEFINE tojava FOR GBool»boolean«ENDDEFINE»
«DEFINE tojava FOR GFloat»float«ENDDEFINE»
«DEFINE tojava FOR GString»String«ENDDEFINE»

I just don't understand why what you wrote in the first example doesn't work (as long as both DEFINE ImplClass are in the same file).

One day I shall master M2T, but that day has yet to come...

Report message to a moderator

Re: Use polymorphism with 2 xpand file [message #522863 is a reply to message #522859]

Wed, 24 March 2010 09:08

Christian Dietrich

Messages: 14665
Registered: July 2009

Senior Member

why don't create a template for type A and another for B and a third template that does the switch?

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

Report message to a moderator

Re: Use polymorphism with 2 xpand file [message #522866 is a reply to message #522863]

Wed, 24 March 2010 09:16

Christophe

Messages: 15
Registered: July 2009

Junior Member

Maxime,
I wish for instance add the following template without updating the typejava file and the current project.

«DEFINE tojava FOR GAnotherType»AnotherType«ENDDEFINE»

This new template should be in a new file (ex: MyComplexType.xpt)

Christian,
Good idea, it's probably the best solution to make a workaround

Report message to a moderator

Previous Topic:	SQL Beautifier ??
Next Topic:	Additional Xpath Functions

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Tue Apr 23 07:10:39 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter