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Use polymorphism with 2 xpand file [message #522712]

Tue, 23 March 2010 13:23

Eclipse User

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.

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

Wed, 24 March 2010 04:23

Eclipse User

Hello you can call another template in anothfile like this

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

[Updated on: Wed, 24 March 2010 04:23] by Moderator

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

Wed, 24 March 2010 04:50

Eclipse User

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

Regards.

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

Wed, 24 March 2010 04:58

Eclipse User

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).

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

Wed, 24 March 2010 05:08

Eclipse User

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

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

Wed, 24 March 2010 05:16

Eclipse User

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

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