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[news.eclipse.modeling.m2m] Re: [ATL] transforming UML to EJB (continuing) 
Hello again,

I tested the code I wrote in the previous message with the EJB and UML files you provided some days ago in the post (http://www.eclipse.org/newsportal/article.php?id=313&group=eclipse.modeling.m2m#313), and it worked fine.

The transformation generated a EJBBusinessMethod with a set of parameters (2 on that example).

Regards,

Marcos.

PS.: I copied below the transformation I executed. Then you can add any extra processing you need.

---------------------------------------------------------------------------------

module UML2EJB; -- Module Template
create OUT : EJB from IN : UML ;

-- Tested: OK
helper context UML!Class def: getAssociationEnds(): Sequence( UML!AssociationEnd) =
	let associationEnds : Sequence(UML!AssociationEnd) = self.feature->
	   select( e | e.oclIsKindOf(UML!AssociationEnd)) in
	if associationEnds->notEmpty() then
	
	  associationEnds->iterate( e;
	             acc: Sequence(UML!AssociationEnd) = Sequence{} |
	    		 acc.append(e) )
	else
		Sequence{}
	endif;
	
-- Tested: OK
helper context UML!Class def:isAComposition(): Boolean =
	self.getAssociationEnds()->exists(end  | end.otherEnd.composition = true)
;		
	
rule ClassToEntityComponent{
    from class : UML!Class
        ( not class.isAComposition()  )
    to entityComponent : EJB!EJBEntityComponent (
        name <- class.name.debug('debug here'),
        feature <- class.feature,
        usedTable <- EJBTable
    ),
    EJBTable : EJB!Table (
    )
}

rule Operation {
   from
     oper : UML!Operation
   to
      method : EJB!EJBBusinessMethod (
        name <- oper.name,
        parameter <- oper.parameter
 )
}
rule Parameter {
   from
     parameter : UML!Parameter
   to
     out : EJB!EJBParameter (
        name <- parameter.name
     )
}

rule Attribute {
   from
     attr : UML!Attribute
   to
     out : EJB!EJBAttribute (
          name <- attr.name
    )

}

rule AssocEnds {
   from
    assocEnd : UML!AssociationEnd
   to
    ASSOCENDS : EJB!EJBAssociationEnd
       (
          name <- assocEnd.name,
          lower <-assocEnd.lower,
          upper <- assocEnd.upper,
          composition <- assocEnd.composition
       )
}

---------------------------------------------------------------------------------


Marcos Didonet Del Fabro wrote: 
Hi Walcir,

maybe I am missing some details about your metamodels, but I think you could write your transformations in a different way, taking advantage of the declarative nature of ATL. See the example rewritten below:


walcir fontanini wrote: 
Hi all,

Please, tell me if I am not in the wrong place. I am trying to transform some UML model to an EJB model. The "parameter" target pattern is not working, and I think I need a lot more "distinct-foreach" !!! It seems that I need just one big "rule" with every possible target pattern there .

Thanks,
-walcir

=== UML model ====
<?xml version="1.0" encoding="ASCII"?>
<xmi:XMI xmi:version="2.0"
    xmlns:xmi="http://www.omg.org/XMI";
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
    xmlns="UML">

<DataType name="String"/>
<DataType name="Integer"/>
<Class name="BreakfastOrder">
<feature xsi:type="Operation" name="calculatePrice">
<parameter name="year_price" type="/1"/>
<parameter name="rate" type="/1"/>
</feature>
<feature xsi:type="Attribute" name="deliveryStatus" type="/0"/>
<feature xsi:type="Attribute" name="deliveryDate" type="/0"/>
<feature xsi:type="AssociationEnd" name="customer" lower="1" upper="1" otherEnd="/3/@feature.3"/>
<feature xsi:type="AssociationEnd" name="breakfasts" lower="1" upper="-1" composition="true" otherEnd="/4/@feature.2"/>
</Class>
</xmi:XMI>
==== EJB model ====
<?xml version="1.0" encoding="ISO-8859-1"?>
<xmi:XMI xmi:version="2.0"
xmlns:xmi="http://www.omg.org/XMI"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns="EJB">
<EJBEntityComponent name="BreakfastOrder" usedTable="/1">
<feature xsi:type="EJBAttribute" name="deliveryStatus"/>
<feature xsi:type="EJBAttribute" name="deliveryDate"/>
<feature xsi:type="EJBAssociationEnd" name="customer" lower="1" upper="1"/>
<feature xsi:type="EJBAssociationEnd" name="breakfasts" lower="1" upper="-1" composition="true"/>
<feature xsi:type="EJBBusinessMethod" name="calculatePrice">
<parameter name="year_price" type="/1"/>
<parameter name="rate" type="/1"/>
</feature>
</EJBEntityComponent>
<Table/>
</xmi:XMI>




And I am using an ATL code like this:

.. some helpers deleted here ...
lazy rule kkkk {
    from umlOper : UML!Operation
    to Parameters : distinct EJB!EJBParameter
           foreach (par in umlOper.parameter) (
                   name <- par.name                  )   }

rule ClassToEntityComponent{
    from class : UML!Class
        ( not class.isAComposition()  )
    to entityComponent : EJB!EJBEntityComponent (
        name <- class.name.debug('debug here'),
        feature <- ATTRS->union(ASSOCENDS)->union(OPERS),
        usedTable <- EJBTable
    ),
    EJBTable : EJB!Table (
    ),
    OPERS : distinct EJB!EJBBusinessMethod
      foreach (oper in class.operations()) (
        name <- oper.name,
        parameter <- oper->collect(e | thisModule.kkkk(e))
    ),
    ATTRS : distinct EJB!EJBAttribute
       foreach (attr in class.attributes())(
          name <- attr.name
    ),
    ASSOCENDS : distinct EJB!EJBAssociationEnd
       foreach (assocEnd in class.getAssociationEnds())(
          name <- assocEnd.name,
          lower <-assocEnd.lower,
          upper <- assocEnd.upper,
          composition <- assocEnd.composition
       )
}