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Problem ATL [message #988633]

Fri, 30 November 2012 18:49

Rafael Durelli

Messages: 72
Registered: September 2012

Member

Hello guys, i'm new at ATL and I'm trying to create a simple transformation that transform a SQLMODEL, which I've devised, to a KDMSQL, which correspond to a extension to the KDM to model SQL statements. However, when I have to create the Datatype I always get an exception. Please, see the code below


-- @path MM=/SQLMODEL/model/sqlmodel.ecore
-- @path MM1=/KDMSQLExtesion/model/kdmSQL.ecore

module transformation;
create OUT : MM1 from IN : MM;



rule table2TableUnit {
	from
		table : MM!Table
	to 
		tableUnit : MM1!TableUnit (
			name <- table.name,
			codeElement <- table.columns
		)
}

rule column2ColumnUnit {
	from
		column : MM!Column
	to 
		columnUnit : MM1!ColumnUnit (
			name <- column.name,
			type <- column.type //the error of Casting is happing here.
                       //type is Datatype and column.type is a String, how can I create a Datatype correctly?
		)
}

Thanks guys, please help.

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Re: Problem ATL [message #988693 is a reply to message #988633]

Sat, 01 December 2012 11:50

Rafael Durelli

Messages: 72
Registered: September 2012

Member

Someone knows how to fix it? Please let me know. Thanks.

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Re: Problem ATL [message #988814 is a reply to message #988693]

Mon, 03 December 2012 10:31

Rafael Durelli

Messages: 72
Registered: September 2012

Member

-- @path MM=/SQLMODEL/model/sqlmodel.ecore
-- @path MM1=/KDMSQLExtesion/model/kdmSQL.ecore

module transformation;
create OUT : MM1 from IN : MM;



rule table2TableUnit {
	from
		table : MM!Table
	to 
		tableUnit : MM1!TableUnit (
			name <- table.name,
			codeElement <- table.columns
		)
}

rule column2ColumnUnit {
	from
		column : MM!Column
	to 
		columnUnit : MM1!ColumnUnit (
			name <- column.name,
			type.name <- column.type -- Herein is the problem...
		) 
}

I have been tried make type.name (String) <- column.type (also string) but the source code don't compile. Could someone please help me on this?

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Re: Problem ATL [message #988816 is a reply to message #988633]

Mon, 03 December 2012 10:34

Rafael Durelli

Messages: 72
Registered: September 2012

Member

-- @path MM=/SQLMODEL/model/sqlmodel.ecore
-- @path MM1=/KDMSQLExtesion/model/kdmSQL.ecore

module transformation;
create OUT : MM1 from IN : MM;



rule table2TableUnit {
	from
		table : MM!Table
	to 
		tableUnit : MM1!TableUnit (
			name <- table.name,
			codeElement <- table.columns
		)
}

rule column2ColumnUnit {
	from
		column : MM!Column
	to 
		columnUnit : MM1!ColumnUnit (
			name <- column.name,
			type.name <- column.type -- Herein is the problem...
		) 
}

I have been tried make type.name (String) <- column.type (also string) but the source code don't compile. Could someone please help me on this?

Report message to a moderator

Re: Problem ATL [message #988822 is a reply to message #988816]

Mon, 03 December 2012 10:58

Sylvain EVEILLARD

Messages: 556
Registered: July 2009

Senior Member

rule column2ColumnUnit {
	from
		column : MM!Column
	to 
		columnUnit : MM1!ColumnUnit (
			name <- column.name,
			type <- type
		),
		type : MM1!Datatype (
			name <- column.type
		)
}

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