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[news.eclipse.modeling.m2m] [ATL] Re: Two metamodels into one 
Copying this question to the ATL newsgroup, eclipse.modeling.m2m.

Jorge Roberto wrote:
Hi, i am making a investigation about this tecnology to know if i can use in my tesis, but i need to make a integration of 2 or more metamodels into 1, but i canŽt, in the time that i write two inputs in the from inside of the rule this doesnŽt make anything, dont crash, dont message error, just a output without information. i take the Author2Person example for this, i include another package, my atl is this

module Author2Person2; -- Module Template
create OUT : Person from IN : Author, IN2 : Author2;

rule Author2
{
    from         a : Author!Author
    to
        p : Person!Person
        (
            name <- a.name,             surname <- a.surname
        )
}

the output i like the example without modification
<?xml version="1.0" encoding="ISO-8859-1"?>
<xmi:XMI xmi:version="2.0"
   xmlns:xmi="http://www.omg.org/XMI"; xmlns="Person">
 <Person name="Yuni" surname="Higuera"/>
 <Person name="Jorge" surname="Rivas"/>
 <Person name="Juan" surname="Rivas"/>
 <Person name="Elsie" surname="Higuera"/>
</xmi:XMI>

but when i do this
module Author2Person2; -- Module Template
create OUT : Person from IN : Author, IN2 : Author2;

rule Author2
{
    from         a : Author!Author,         b : Author2!Author2
    to
        p : Person!Person
        (
            name <- a.name,             surname <- a.surname
        )
}

note: the from in the rule is the diference, the output is this

<?xml version="1.0" encoding="ISO-8859-1"?>
<xmi:XMI xmi:version="2.0"
   xmlns:xmi="http://www.omg.org/XMI"; xmlns="Person">
 <Person/>
 <Person/>
 <Person/>
 <Person/>
</xmi:XMI>

with no message error.

any help its usefull, sorry for my english, its not my native lenguaje.

thanks, bye