Kenn,
god damn, i was aware of all other derived attributes or subset, but
not for the unions... is there any rationale, why derived associations
or attributes are not generally set to transient=true? Because of that
they are already set to volatile=true i allways forget to set them
manually to transient. But, it works now. Thanks!
Another point: The generated editor behaves weird for the following
snippet. I defined the following (trying to approximate the ownedRule
semtanics of the superstructure):
#####
Element {abstract}
+/ownedElement * {union, read-only, containment}
+/ownedRule 0..* {subsets ownedElement, containment}
NamedElemet extends Element
BehavioralFeature extends NamedElement
Operation extends BehavioralFeature
+precondition 0..* {subsets ownedRule, containment}
+postcondition 0..* {subsets ownedRule, containment} #####
If i add an 'ownedRule' to the operation, everything is fine. But any
adding of either pre- or postcondition has the effect, that 2
instances of the same constraint is displayed. Well, the XMI looks
okay, IMHO:
<packagedElement xsi:type="testing:Class"
xmi:id="_cUg_8IXsEd6Lu8REkryexw">
<ownedOperation xmi:id="_fkrwMIXsEd6Lu8REkryexw"
postcondition="_gJMLcIXsEd6Lu8REkryexw">
<ownedRule xmi:id="_gJMLcIXsEd6Lu8REkryexw"/>
</ownedOperation>
</packagedElement>
The postcondition belongs both to the ownedRule containment reference,
and to the postcondition reference of its context operation. In the
editor, the constraint is shown twice instead of just being a single
element. If i add a constraint via the ownedRule reference, only a
single element is displayed.
The java code for Operation::postcondition is:
public EList<Constraint> getPostconditions() {
if (postconditions == null) {
postconditions = new
SubsetSupersetEObjectResolvingEList<Constraint>(Constraint.class,
this, TestingPackage.OPERATION__POSTCONDITION,
POSTCONDITION_ESUPERSETS, null);
}
return postconditions;
}
and for Element::ownedRule it is
public EList<Constraint> getOwnedRules() {
if (ownedRules == null) {
ownedRules = new
EObjectContainmentWithInverseEList<Constraint>(Constraint.class, this,
TestingPackage.MODEL_ELEMENT__OWNED_RULE,
TestingPackage.CONSTRAINT__CONTEXT);
}
return ownedRules;
}
Again some perfect ideas?
Thanks in advance
Timothy
Kenn Hussey schrieb:
Timothy,
I wouldn't have expected to see an 'ownedElement' element in the
serialization, since derived unions are, by definition read-only
(hence the reason why the addition is failing upon deserialization).
Did you make that feature transient in the metamodel?
Kenn
Timothy Marc wrote:
Hey all,
i'm using the UML2 genmodel to generate a uml-like metamodel with
subsets and unions etc. I've rebuild the Element -> ownedComment
relationship of the UML 2.2 Superstructure (Figure 7.3). Instead of
Comment, i've sed the term Annotation. The model looks like
Element {abstract}
+/owner 0..1 {union, read-only}
+/ownedElement * {union, read-only}
TestingModel extends Element
+ annotation * {subsets ownedElement}
Annotation extends Element
When i define a simple model like the model mentioned in the
following XMI snippet
<?xml version="1.0" encoding="UTF-8"?>
<union:TestingModel xmi:version="2.0"
xmlns:xmi="http://www.omg.org/XMI"; xmlns:union="http:///union.ecore";
ownedElement="//@annotation.0">
<annotation/>
</union:TestingModel>
i ran allways in an exception during deserialization. I've tried
both the editor and the programmatically deserialization. Both fail
with the following exception trace. It seems, that somewhere the
DerivedEObjectEList.add() method will be called.
org.eclipse.emf.ecore.xmi.IllegalValueException: Value
'union.impl.AnnotationImpl@352d87' is not legal.
(platform:/resource/f/My.union, -1, -1)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.setFeatureValue(XMLHandler.java:2648)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.handleForwardReferences(XMLHandler.java:1135)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.endDocument(XMLHandler.java:1214)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endDocument(Unknown
Source)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown
Source)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown
Source)
at
com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown
Source)
at javax.xml.parsers.SAXParser.parse(Unknown Source)
at
org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java:181)
at
org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doLoad(XMLResourceImpl.java:180)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1445)
at
org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1241)
at
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:255)
at
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:270)
at
org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:397)
at union.presentation.UnionEditor.createModel(UnionEditor.java:950)
at
union.presentation.UnionEditor.createPages(UnionEditor.java:1007)
at
org.eclipse.ui.part.MultiPageEditorPart.createPartControl(MultiPageEditorPart.java:310)
at ....
Caused by: java.lang.UnsupportedOperationException
at
org.eclipse.uml2.common.util.DerivedEObjectEList$DerivedListIterator.add(DerivedEObjectEList.java:278)
at java.util.AbstractSequentialList.add(Unknown Source)
at
org.eclipse.uml2.common.util.DerivedEObjectEList.addUnique(DerivedEObjectEList.java:636)
at
org.eclipse.emf.ecore.xmi.impl.XMLHelperImpl.setValue(XMLHelperImpl.java:1192)
at
org.eclipse.emf.ecore.xmi.impl.XMLHandler.setFeatureValue(XMLHandler.java:2643)
... 58 more
For serialization and deserialization i'm using an
XMIBResource(Factory) created by the genmodel automatically. Please
let me know, what is going wrong in this really simple example.
Thanks in advance
Timothy