Eclipse Community Forums: Epsilon » [EGL] Can't get the type name of an operation

Help

Home

Home » Modeling » Epsilon » [EGL] Can't get the type name of an operation(UML to Java tranformation)

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

[EGL] Can't get the type name of an operation [message #941153]

Fri, 12 October 2012 08:53

Patricia Fernández

Messages: 41
Registered: October 2012

Member

Hello,

I've the following .egl file:

	
	[% for (oper in currentClass.AllOperations) {%]
  		 [%=oper.visibility%] [%=oper.type.name%]  [%=oper.name%] () {
  		}   	
        [%}%]

The problem is that [%=oper.type.name%] is not working. It gives me an Called feature name on undefined object error. If I put [%=oper.type%] it shows me:

org.eclipse.uml2.uml.internal.impl.PrimitiveTypeImpl@14f6ce4 (name: Boolean, visibility: <unset>) (isLeaf: false, isAbstract: false, isFinalSpecialization: false)

And, as I want to get the name of the type, I wrote [%=oper.type.name%] but it's not working.

I made a similar file with attributes instead of operations, and [%=attr.type.name%] worked fine.

If anyone could help me.
Thanks in advance.

[Updated on: Fri, 12 October 2012 08:54]

Report message to a moderator

Re: [EGL] Can't get the type name of an operation [message #941292 is a reply to message #941153]

Fri, 12 October 2012 11:21

Antonio Garcia-Dominguez

Messages: 424
Registered: January 2010

Senior Member

It's strange that oper.type.name fails in that way if oper.type is defined.

Could you set up a minimal example that reproduces the problem?

http://eclipse.org/epsilon/doc/articles/minimal-examples/

Report message to a moderator

Re: [EGL] Can't get the type name of an operation [message #943211 is a reply to message #941292]

Sun, 14 October 2012 08:52

Patricia Fernández

Messages: 41
Registered: October 2012

Member

Antonio Garcia-Dominguez wrote on Fri, 12 October 2012 07:21

It's strange that oper.type.name fails in that way if oper.type is defined.

Could you set up a minimal example that reproduces the problem?

http://eclipse.org/epsilon/doc/articles/minimal-examples/

Hello,

Sorry for the delay in my reply.
Minimal example attached.

Attachment: Minimal.zip
(Size: 30.68KB, Downloaded 158 times)

[Updated on: Sun, 14 October 2012 08:56]

Report message to a moderator

Re: [EGL] Can't get the type name of an operation [message #953824 is a reply to message #943211]

Mon, 22 October 2012 15:05

Horacio Hoyos

Messages: 165
Registered: October 2009

Senior Member

Patricia,

Wanted to give a go at this but I didn't saw the launch configuration on your minimal example. Could you please add this?

Report message to a moderator

Re: [EGL] Can't get the type name of an operation [message #953913 is a reply to message #953824]

Mon, 22 October 2012 16:32

Patricia Fernández

Messages: 41
Registered: October 2012

Member

Horacio Hoyos wrote on Mon, 22 October 2012 11:05

Patricia,

Wanted to give a go at this but I didn't saw the launch configuration on your minimal example. Could you please add this?

Hello Horacio,

I don't use a launch configuration file, instead I do the following:

> Run
> Run Configurations
> EGL Template
> Tab Template-> Name: X / Source: Select the Operations.egl file.
> Tab Models-> Add -> EMF Model -> Name: X / Model file: Select Ejemplo.uml / Meta-model URI: http://www.eclipse.org/uml2/3.0.0/UML (In the EMF section unselect Meta-model is file based)-> OK
> Apply
> Run

Report message to a moderator

Re: [EGL] Can't get the type name of an operation [message #959149 is a reply to message #953913]

Fri, 26 October 2012 13:48

Horacio Hoyos

Messages: 165
Registered: October 2009

Senior Member

Hi Patricia,

I did some debug printing, you can try this:

	// Operations of the class [%=currentClass.name%]
	[%currentClass.println("class ");%]
	[% for (oper in currentClass.AllOperations) {%]
		[% oper.println("oper ");	%]
		[% oper.type.println("type ");	%]
  		 [%=oper.visibility%] [%=oper.type%]  [%=oper.name%] () {
  		}   	
    [%}%]

And I got:

...
oper Operation [name=addAlumno, qualifiedName=Data::Grupo::addAlumno, visibility=public, isLeaf=false, isStatic=false, concurrency=sequential, isAbstract=false, isOrdered=false, isQuery=false, isUnique=true, lower=1, upper=1]
type 
class Class [name=Profesor, qualifiedName=Data::Profesor, visibility=public, isLeaf=false, isAbstract=false, isFinalSpecialization=false, isActive=false, ]
oper Operation [name=vincular_departamento, qualifiedName=Data::Profesor::vincular_departamento, visibility=public, isLeaf=false, isStatic=false, concurrency=sequential, isAbstract=false, isOrdered=false, isQuery=false, isUnique=true, lower=1, upper=1]
type PrimitiveType [name=Boolean, qualifiedName=PrimitiveTypes::Boolean, visibility=public, isLeaf=false, isAbstract=false, isFinalSpecialization=false, ]
...

So the addAlumno has no type, but the vincular_departamento does.

Looking at the uml model, addAlumno has no return type (probably void?) while the vincular_departamento operation has a boolean return type. So I guess the operation type is null if the operation has no return parameter. Guess you have to add some logic to test this and set the java operation return type to void if the uml operation's type is null.

In the future using this "debug printing" can help you understand what is happening (if you don't know a lot about models and decide to run the egl in debug mode Wink

)

Hope this solves your problem,

[Updated on: Fri, 26 October 2012 13:51]

Report message to a moderator

Re: [EGL] Can't get the type name of an operation [message #959154 is a reply to message #959149]

Fri, 26 October 2012 13:50

Patricia Fernández

Messages: 41
Registered: October 2012

Member

Horacio Hoyos wrote on Fri, 26 October 2012 09:48

Hi Patricia,

I did some debug printing, you can try this:
	// Operations of the class [%=currentClass.name%]
	[%currentClass.println("class ");%]
	[% for (oper in currentClass.AllOperations) {%]
		[% oper.println("oper ");	%]
		[% oper.type.println("type ");	%]
  		 [%=oper.visibility%] [%=oper.type%]  [%=oper.name%] () {
  		}   	
    [%}%]
And I got:
...
oper Operation [name=addAlumno, qualifiedName=Data::Grupo::addAlumno, visibility=public, isLeaf=false, isStatic=false, concurrency=sequential, isAbstract=false, isOrdered=false, isQuery=false, isUnique=true, lower=1, upper=1]
type 
class Class [name=Profesor, qualifiedName=Data::Profesor, visibility=public, isLeaf=false, isAbstract=false, isFinalSpecialization=false, isActive=false, ]
oper Operation [name=vincular_departamento, qualifiedName=Data::Profesor::vincular_departamento, visibility=public, isLeaf=false, isStatic=false, concurrency=sequential, isAbstract=false, isOrdered=false, isQuery=false, isUnique=true, lower=1, upper=1]
...
So the addAlumno has no type, but the vincular_departamento does.

Looking at the uml model, addAlumno has no return type (probably void?) while the vincular_departamento operation has a boolean return type. So I guess the operation type is null if the operation has no return parameter. Guess you have to add some logic to test this and set the java operation return type to null if the uml operation's type is null.

In the future using this "debug printing" can help you understand what is happening (if you don't know a lot about models and decide to run the egl in debug mode )

Hope this solves your problem,