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| Re: MAP [message #1447518 is a reply to message #1447504] |
Sat, 18 October 2014 12:24   |
 Ed Merks
Messages: 30554
Registered: July 2009 |
Senior Member |
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Ralf,
Primitive types can't be type arguments so you'd need to model this with
the wrapper types, i.e., EIntegerObject. I.e., you want to generate
EMap<Integer, Integer>, not EMap<int, int>. There should really be a
constraint that checks for this so you'd know before you tried to
generate that it's bogus.
On 18/10/2014 1:59 PM, Ralf Buschermoehle wrote:
> Hi,
>
> I created a MAP according to http://wiki.eclipse.org/index.php/EMF/FAQ#How_do_I_create_a_Map_in_EMF.3F.
>
> Please find a screenshot of the emf model part attached (map.jpg). When I try to generate model code EMF complains about missing Dimensions (see map2.jpg).
>
> Opening the file at the line with the error shows:
>
> EMap<int, int> getTest();
>
> // test is the attribute pointing to the MapEntries.
>
> What am I missing?
>
> Greetings,
>
> Ralf
>
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| Re: MAP [message #1447594 is a reply to message #1447518] |
Sat, 18 October 2014 15:20 |
Ralf Buschermoehle
Messages: 8
Registered: August 2013 |
Junior Member |
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Hi,
I have now an EMap<Integer, EList<Integer>> ... or more precisely I have a list of BasicEMap.Entry<Integer,EList<Integer>> entries, right?
How can/should I check/add entries? In source code ... setting key / value like this fails ...
Object test = eObject.eGet(someEStructFeature);
EcoreEList.Dynamic<BasicEMap.Entry<Integer,EList<Integer>>> listOfEntries = (Dynamic<org.eclipse.emf.common.util.BasicEMap.Entry<Integer, EList<Integer>>>) test;
// creating a new entry
DynamicEObjectImpl.BasicEMapEntry<Integer,EList<Integer>> newEntry = new DynamicEObjectImpl.BasicEMapEntry<Integer, EList<Integer>>();
BasicEList<Integer> newList = new BasicEList<Integer>(1);
newEntry.setValue(newList);
newEntry.setKey(new Integer(1));
listOfEntries.add(newEntry);
And on the other side ... I need to compare all keys (manually) to retrieve the "right" value, right?
Greetings,
Ralf
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| Re: MAP [message #1447643 is a reply to message #1447594] |
Sat, 18 October 2014 17:10 |
Ed Merks
Messages: 30554
Registered: July 2009 |
Senior Member |
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Ralf,
Comments below.
On 18/10/2014 5:20 PM, Ralf Buschermoehle wrote:
> Hi,
>
> I have now an EMap<Integer, EList<Integer>> ... or more precisely I
> have a list of BasicEMap.Entry<Integer,EList<Integer>> entries, right?
In terms of implementation details, yes.
>
> How can/should I check/add entries? In source code ... setting key /
> value like this fails ...
Use the EMap API. There's even the
org.eclipse.emf.common.util.EMap.map() view (read/write) so you can
treat it exactly as a java.util.Map.
>
> Object test = eObject.eGet(someEStructFeature);
> EcoreEList.Dynamic<BasicEMap.Entry<Integer,EList<Integer>>>
> listOfEntries =
> (Dynamic<org.eclipse.emf.common.util.BasicEMap.Entry<Integer,
> EList<Integer>>>) test;
Don't cast to implementation specific details. It's just an EMap.
>
> // creating a new entry
>
> DynamicEObjectImpl.BasicEMapEntry<Integer,EList<Integer>> newEntry =
> new DynamicEObjectImpl.BasicEMapEntry<Integer, EList<Integer>>();
Given you have a generated model, this isn't going to work. I.e., you
have a generate map entry implementation and that must be used.
>
> BasicEList<Integer> newList = new BasicEList<Integer>(1);
> newEntry.setValue(newList);
> newEntry.setKey(new Integer(1));
>
> listOfEntries.add(newEntry);
>
> And on the other side ... I need to compare all keys (manually) to
> retrieve the "right" value, right?
Ecore itself has an EMap for EAnnotation.details. We just call
eAnnotation.getDetails().get(key) and get a String value back or call
eAnnotation.getDetails.put(key, value) and put a String value in. It's
just a map; there are very few places where you need to be concerned
with lower level details. So it makes me wonder why you're asking in
the first place...
>
> Greetings,
>
> Ralf
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