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Re: [EMF] How to create an instance of an ecore model [message #66576]

Thu, 05 February 2009 07:58

Eclipse User

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Miguel,

I don't know much about OCL. I've added the OCL newsgroup to the "to"
list of the reply. Do doubt Christian will see it...

Miguel Angel Garcia de Dios wrote:
> Ih Ed Merks,
> I've changed the property volatile of the "people" ERefeference of
> "People" class, which is my container of Person. Then I can generate
> instances of Person from "people" EReference but now I have a new
> different problem: with the "OCL Interpreter Console" plugin installed
> I have made many OCL queries but I've obtained an unexpected value
> attached as a screenshot: Having three instances of Person, the OCL
> query "Person.allInstances()" returns an empty result. But if I write
> "self.name" (being the context an instance of Person) I obtain the
> desired result ('Ada' for example). I think I have any wrong property
> value because it seems like Person isntances are no related ro
> something similar.
>
> Thank you!
>
> Miguel Angel Garcia de Dios wrote:
>> Ed Merks,
>> Yes, I did. I marked the feature as volatile.
>> I think it cannot be so complicated. Maybe any value of a property is
>> not correct so, to ensure that I'm going to attach screenshots for
>> everything (it is not so much).
>>
>> I am really concerned with that because I think it should be easier.
>> Thank you in advance!
>>
>> Ed Merks wrote:
>>> Miguel,
>>>
>>> Did you mark the feature as volatile such that no code is generated
>>> for it?
>>>
>>>
>>> Miguel Angel Garcia de Dios wrote:
>>>> Ed Merks,
>>>> I have the containment property of my desired container class in
>>>> true, the GenFeature properties are also update: containment=true
>>>> and the GenEdit properties contains children=true and create
>>>> children=true.
>>>> I hope you can be more explicity with the solution of my problem
>>>> please.
>>>> The last error I've obtained is when I create My.container file
>>>> from a Poeple object. Hten I click on it and I get the nex error:
>>>>
>>>> Unhandled event loop exception:
>>>> java.lang.UnsupportedOperationException
>>>> at Container.impl.PeopleImpl.getPeople(PeopleImpl.java:113)
>>>> at Container.impl.PeopleImpl.eGet(PeopleImpl.java:141)
>>>> at
>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1012)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1004)
>>>>
>>>> at
>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:999)
>>>>
>>>> at
>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.getChildre n(ItemProviderAdapter.java:338)
>>>>
>>>> at
>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:397)
>>>>
>>>> at
>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:384)
>>>>
>>>> at
>>>> org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvid er.hasChildren(AdapterFactoryContentProvider.java:198)
>>>>
>>>> at
>>>> org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2076)
>>>>
>>>> at
>>>> org.eclipse.jface.viewers.TreeViewer.isExpandable(TreeViewer .java:582)
>>>> at
>>>> org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2102)
>>>>
>>>> at
>>>> org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(Abst ractTreeViewer.java:2752)
>>>>
>>>> at
>>>> org.eclipse.jface.viewers.TreeViewer.updatePlus(TreeViewer.j ava:842)
>>>> at
>>>> org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem( AbstractTreeViewer.java:828)
>>>>
>>>> at
>>>> org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractT reeViewer.java:802)
>>>>
>>>> at
>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:70)
>>>> at
>>>> org.eclipse.jface.viewers.AbstractTreeViewer.createChildren( AbstractTreeViewer.java:776)
>>>>
>>>> at
>>>> org.eclipse.jface.viewers.TreeViewer.createChildren(TreeView er.java:634)
>>>>
>>>> at
>>>> org.eclipse.jface.viewers.AbstractTreeViewer.handleTreeExpan d(AbstractTreeViewer.java:1442)
>>>>
>>>> at
>>>> org.eclipse.jface.viewers.TreeViewer.handleTreeExpand(TreeVi ewer.java:927)
>>>>
>>>> at
>>>> org.eclipse.jface.viewers.AbstractTreeViewer$4.treeExpanded( AbstractTreeViewer.java:1453)
>>>>
>>>> at
>>>> org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListe ner.java:126)
>>>>
>>>> at
>>>> org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :84)
>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1158)
>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1182)
>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1167)
>>>> at
>>>> org.eclipse.swt.widgets.Tree.gtk_test_expand_row(Tree.java:2 026)
>>>> at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1572)
>>>> at org.eclipse.swt.widgets.Display.windowProc(Display.java:4105 )
>>>> at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native
>>>> Method)
>>>> at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:57 92)
>>>> at org.eclipse.swt.widgets.Display.eventProc(Display.java:1177)
>>>> at
>>>> org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Na tive
>>>> Method)
>>>> at
>>>> org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS. java:1550)
>>>> at
>>>> org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :3031)
>>>> at
>>>> org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:2382)
>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)
>>>> at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:21 98)
>>>> at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)
>>>> at
>>>> org.eclipse.core.databinding.observable.Realm.runWithDefault (Realm.java:288)
>>>>
>>>> at
>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:488)
>>>>
>>>> at
>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>> at
>>>> org.eclipse.ui.internal.ide.application.IDEApplication.start (IDEApplication.java:113)
>>>>
>>>> at
>>>> org.eclipse.equinox.internal.app.EclipseAppHandle.run(Eclips eAppHandle.java:193)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:110)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:79)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:386)
>>>>
>>>> at
>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:179)
>>>>
>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>> at
>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>
>>>> at
>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>
>>>> at java.lang.reflect.Method.invoke(Method.java:597)
>>>> at
>>>> org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 549)
>>>> at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
>>>> at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
>>>> at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
>>>>
>>>> A lot of thanks!
>>>> And always sorry for my bad English.
>>>>
>>>> Ed Merks wrote:
>>>>> Miguel,
>>>>>
>>>>> Comments below.
>>>>>
>>>>>
>>>>> Miguel Angel Garcia de Dios wrote:
>>>>>> Hi,
>>>>>> I think my question is easy for us but i have spend too much time
>>>>>> in it:
>>>>>> I want to create a simply ecore model and then i want to
>>>>>> instanciate it and check some OCL queries on it.
>>>>>> My purpose is to create an instance of an ecore model which
>>>>>> contains as instances of a class named Person as I want.
>>>>>> These are my steps:
>>>>>> 1.- Create the ecore model. It is compoused by two classes:
>>>>>> -People, which contains an EReference with multiplicity
>>>>>> 0..* to the EClass Person.
>>>>>> -Person, which contains only an EAttribute named "name"
>>>>>> with String type.
>>>>>> 2.- Create automatically the .genmodel file from the ecore
>>>>>> model .
>>>>>> 3.- Generate the Java code aotumatically fron the .genmodel.
>>>>>> 4.- Launch an Eclipse application from the project.
>>>>>> 5.- Create an instance of the ecore model.
>>>>>> My probles is in the last step: I begin the model with an
>>>>>> instance of People and hten I desire to create as number of
>>>>>> instances of Person as I want but I cannot do that. I don't know
>>>>>> the reason. I've seen the EXTLibrary example too many times but I
>>>>>> cannot get my desired result.
>>>>> The lack of there being a containment reference is the likely
>>>>> reason. And note that even if you change it in the Ecore model,
>>>>> the GenFeature properties for the feature will *not *change, so
>>>>> you'll need to update those as well to support children and child
>>>>> creation.
>>>>>> Being more exaclty, the idea is to be a EClass which can generate
>>>>>> as many Person as I want. That class is People. I've tried many
>>>>>> possibilies changing the class properties obtaining different
>>>>>> errors.
>>>>>> Can somebody tell me how to create an ecore model that has an
>>>>>> EClass which can generates as many instances of another class as
>>>>>> I want?
>>>>>> Thank you in advance!
>>>>>>
>>
>>
>> ------------------------------------------------------------ ------------
>>
>>
>> ------------------------------------------------------------ ------------
>>
>>
>> ------------------------------------------------------------ ------------
>>
>>
>> ------------------------------------------------------------ ------------
>>
>>
>> ------------------------------------------------------------ ------------
>>
>>
>> ------------------------------------------------------------ ------------
>>
>
>
> ------------------------------------------------------------ ------------
>

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Miguel, 
 
I don't know much about OCL.  I've added the OCL newsgroup to the "to"
list of the reply.  Do doubt Christian will see it... 
 
 
Miguel Angel Garcia de Dios wrote:
<blockquote cite="mid:gmeemi$n7a$1@build.eclipse.org" type="cite">Ih Ed
Merks,
 
I've changed the property volatile of the "people" ERefeference of
"People" class, which is my container of Person. Then I can generate
instances of Person from "people" EReference but now I have a new
different problem: with the "OCL Interpreter Console" plugin installed
I have made many OCL queries but I've obtained an unexpected value
attached as a screenshot: Having three instances of Person, the OCL
query "Person.allInstances()" returns an empty result. But if I write
"self.name" (being the context an instance of Person) I obtain the
desired result ('Ada' for example). I think I have any wrong property
value because it seems like Person isntances are no related ro
something similar.
 
 
Thank you!
 
 
Miguel Angel Garcia de Dios wrote:
 
<blockquote type="cite">Ed Merks,
 
Yes, I did. I marked the feature as volatile.
 
I think it cannot be so complicated. Maybe any value of a property is
not correct so, to ensure that I'm going to attach screenshots for
everything (it is not so much).
 
 
I am really concerned with that because I think it should be easier.
 
Thank you in advance!
 
 
Ed Merks wrote:
 
<blockquote type="cite">Miguel,
 
 
Did you mark the feature as volatile such that no code is generated for
it?
 
 
 
Miguel Angel Garcia de Dios wrote:
 
<blockquote type="cite">Ed Merks,
 
I have the containment property of my desired container class in true,
the GenFeature properties are also update: containment=true and the
GenEdit properties contains children=true and create children=true.
 
I hope you can be more explicity with the solution of my problem
please.
 
The last error I've obtained is when I create My.container file from a
Poeple object. Hten I click on it and I get the nex error:
 
 
Unhandled event loop exception:
 
java.lang.UnsupportedOperationException
 
    at Container.impl.PeopleImpl.getPeople(PeopleImpl.java:113)
 
    at Container.impl.PeopleImpl.eGet(PeopleImpl.java:141)
 
    at
org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1012)
 
    at
org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1004)
 
    at
org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:999)
 
    at
org.eclipse.emf.edit.provider.ItemProviderAdapter.getChildre n(ItemProviderAdapter.java:338)
 
    at
org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:397)
 
    at
org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:384)
 
    at
org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvid er.hasChildren(AdapterFactoryContentProvider.java:198)
 
    at
org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2076)
 
    at
org.eclipse.jface.viewers.TreeViewer.isExpandable(TreeViewer .java:582)
 
    at
org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2102)
 
    at
org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(Abst ractTreeViewer.java:2752)
 
    at
org.eclipse.jface.viewers.TreeViewer.updatePlus(TreeViewer.j ava:842)
 
    at
org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem( AbstractTreeViewer.java:828)
 
    at
org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractT reeViewer.java:802)
 
    at
org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:70)
 
    at
org.eclipse.jface.viewers.AbstractTreeViewer.createChildren( AbstractTreeViewer.java:776)
 
    at
org.eclipse.jface.viewers.TreeViewer.createChildren(TreeView er.java:634)
 
    at
org.eclipse.jface.viewers.AbstractTreeViewer.handleTreeExpan d(AbstractTreeViewer.java:1442)
 
    at
org.eclipse.jface.viewers.TreeViewer.handleTreeExpand(TreeVi ewer.java:927)
 
    at
org.eclipse.jface.viewers.AbstractTreeViewer$4.treeExpanded( AbstractTreeViewer.java:1453)
 
    at
org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListe ner.java:126)
 
    at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :84)
 
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1158)
 
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1182)
 
    at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1167)
 
    at org.eclipse.swt.widgets.Tree.gtk_test_expand_row(Tree.java:2 026)
 
    at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1572)
 
    at org.eclipse.swt.widgets.Display.windowProc(Display.java:4105 )
 
    at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native
Method)
 
    at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:57 92)
 
    at org.eclipse.swt.widgets.Display.eventProc(Display.java:1177)
 
    at org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Na tive
Method)
 
    at
org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS. java:1550)
 
    at
org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :3031)
 
    at
org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:2382)
 
    at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)
 
    at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:21 98)
 
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)
 
    at
org.eclipse.core.databinding.observable.Realm.runWithDefault (Realm.java:288)
 
    at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:488)
 
    at
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
 
    at
org.eclipse.ui.internal.ide.application.IDEApplication.start (IDEApplication.java:113)
 
    at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(Eclips eAppHandle.java:193)
 
    at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:110)
 
    at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:79)
 
    at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:386)
 
    at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:179)
 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
 
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
 
    at java.lang.reflect.Method.invoke(Method.java:597)
 
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 549)
 
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
 
    at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
 
    at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
 
 
A lot of thanks!
 
And always sorry for my bad English.
 
 
Ed Merks wrote:
 
<blockquote type="cite">Miguel,
 
 
Comments below.
 
 
 
Miguel Angel Garcia de Dios wrote:
 
<blockquote type="cite">Hi,
 
I think my question is easy for us but i have spend too much time in
it:
 
I want to create a simply ecore model and then i want to instanciate it
and check some OCL queries on it.
 
My purpose is to create an instance of an ecore model which contains as
instances of a class named Person as I want.
 
These are my steps:
 
    1.- Create the ecore model. It is compoused by two classes:
 
         -People, which contains an EReference with multiplicity 0..* to
the EClass Person.
 
         -Person, which contains only an EAttribute named "name" with
String type.
 
    2.- Create automatically the .genmodel file from the ecore model .
 
    3.- Generate the Java code aotumatically fron the .genmodel.
 
    4.- Launch an Eclipse application from the project.
 
    5.- Create an instance of the ecore model.
 
My probles is in the last step: I begin the model with an instance of
People and hten I desire to create as number of instances of Person as
I want but I cannot do that. I don't know the reason. I've seen the
EXTLibrary example too many times but I cannot get my desired result.
 
</blockquote>
The lack of there being a containment reference is the likely reason. 
And note that even if you change it in the Ecore model, the GenFeature
properties for the feature will *not *change, so you'll need to update
those as well to support children and child creation.
 
<blockquote type="cite">Being more exaclty, the idea is to be
a EClass which can generate as many Person as I want. That class is
People. I've tried many possibilies changing the class properties
obtaining different errors.
 
Can somebody tell me how to create an ecore model that has an EClass
which can generates as many instances of another class as I want?
 
Thank you in advance!
 
    </blockquote>
</blockquote>
</blockquote>
</blockquote>
 
 
------------------------------------------------------------ ------------
 
 
 
------------------------------------------------------------ ------------
 
 
 
------------------------------------------------------------ ------------
 
 
 
------------------------------------------------------------ ------------
 
 
 
------------------------------------------------------------ ------------
 
 
 
------------------------------------------------------------ ------------
 
 
</blockquote>
 
 
<hr size="4" width="90%"> 
<center><img src="cid:part1.02050102.02090700@gmail.com"></center>
</blockquote>
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Re: [EMF] How to create an instance of an ecore model [message #66597 is a reply to message #66576]

Thu, 05 February 2009 08:29

Eclipse User

Thank you Ed Merks.
I will see that NewsGroup looking for the answer.

Ed Merks wrote:
> Miguel,
>
> I don't know much about OCL. I've added the OCL newsgroup to the "to"
> list of the reply. Do doubt Christian will see it...
>
>
> Miguel Angel Garcia de Dios wrote:
>> Ih Ed Merks,
>> I've changed the property volatile of the "people" ERefeference of
>> "People" class, which is my container of Person. Then I can generate
>> instances of Person from "people" EReference but now I have a new
>> different problem: with the "OCL Interpreter Console" plugin installed
>> I have made many OCL queries but I've obtained an unexpected value
>> attached as a screenshot: Having three instances of Person, the OCL
>> query "Person.allInstances()" returns an empty result. But if I write
>> "self.name" (being the context an instance of Person) I obtain the
>> desired result ('Ada' for example). I think I have any wrong property
>> value because it seems like Person isntances are no related ro
>> something similar.
>>
>> Thank you!
>>
>> Miguel Angel Garcia de Dios wrote:
>>> Ed Merks,
>>> Yes, I did. I marked the feature as volatile.
>>> I think it cannot be so complicated. Maybe any value of a property is
>>> not correct so, to ensure that I'm going to attach screenshots for
>>> everything (it is not so much).
>>>
>>> I am really concerned with that because I think it should be easier.
>>> Thank you in advance!
>>>
>>> Ed Merks wrote:
>>>> Miguel,
>>>>
>>>> Did you mark the feature as volatile such that no code is generated
>>>> for it?
>>>>
>>>>
>>>> Miguel Angel Garcia de Dios wrote:
>>>>> Ed Merks,
>>>>> I have the containment property of my desired container class in
>>>>> true, the GenFeature properties are also update: containment=true
>>>>> and the GenEdit properties contains children=true and create
>>>>> children=true.
>>>>> I hope you can be more explicity with the solution of my problem
>>>>> please.
>>>>> The last error I've obtained is when I create My.container file
>>>>> from a Poeple object. Hten I click on it and I get the nex error:
>>>>>
>>>>> Unhandled event loop exception:
>>>>> java.lang.UnsupportedOperationException
>>>>> at Container.impl.PeopleImpl.getPeople(PeopleImpl.java:113)
>>>>> at Container.impl.PeopleImpl.eGet(PeopleImpl.java:141)
>>>>> at
>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1012)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1004)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:999)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.getChildre n(ItemProviderAdapter.java:338)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:397)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:384)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvid er.hasChildren(AdapterFactoryContentProvider.java:198)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2076)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.TreeViewer.isExpandable(TreeViewer .java:582)
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2102)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(Abst ractTreeViewer.java:2752)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.TreeViewer.updatePlus(TreeViewer.j ava:842)
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem( AbstractTreeViewer.java:828)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractT reeViewer.java:802)
>>>>>
>>>>> at
>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:70)
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.createChildren( AbstractTreeViewer.java:776)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.TreeViewer.createChildren(TreeView er.java:634)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.handleTreeExpan d(AbstractTreeViewer.java:1442)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.TreeViewer.handleTreeExpand(TreeVi ewer.java:927)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer$4.treeExpanded( AbstractTreeViewer.java:1453)
>>>>>
>>>>> at
>>>>> org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListe ner.java:126)
>>>>>
>>>>> at
>>>>> org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :84)
>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1158)
>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1182)
>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1167)
>>>>> at
>>>>> org.eclipse.swt.widgets.Tree.gtk_test_expand_row(Tree.java:2 026)
>>>>> at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1572)
>>>>> at org.eclipse.swt.widgets.Display.windowProc(Display.java:4105 )
>>>>> at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native
>>>>> Method)
>>>>> at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:57 92)
>>>>> at org.eclipse.swt.widgets.Display.eventProc(Display.java:1177)
>>>>> at
>>>>> org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Na tive
>>>>> Method)
>>>>> at
>>>>> org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS. java:1550)
>>>>> at
>>>>> org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :3031)
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:2382)
>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)
>>>>> at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:21 98)
>>>>> at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)
>>>>> at
>>>>> org.eclipse.core.databinding.observable.Realm.runWithDefault (Realm.java:288)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:488)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>> at
>>>>> org.eclipse.ui.internal.ide.application.IDEApplication.start (IDEApplication.java:113)
>>>>>
>>>>> at
>>>>> org.eclipse.equinox.internal.app.EclipseAppHandle.run(Eclips eAppHandle.java:193)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:110)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:79)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:386)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:179)
>>>>>
>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>> at
>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>
>>>>> at
>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>
>>>>> at java.lang.reflect.Method.invoke(Method.java:597)
>>>>> at
>>>>> org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 549)
>>>>> at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
>>>>> at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
>>>>> at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
>>>>>
>>>>> A lot of thanks!
>>>>> And always sorry for my bad English.
>>>>>
>>>>> Ed Merks wrote:
>>>>>> Miguel,
>>>>>>
>>>>>> Comments below.
>>>>>>
>>>>>>
>>>>>> Miguel Angel Garcia de Dios wrote:
>>>>>>> Hi,
>>>>>>> I think my question is easy for us but i have spend too much time
>>>>>>> in it:
>>>>>>> I want to create a simply ecore model and then i want to
>>>>>>> instanciate it and check some OCL queries on it.
>>>>>>> My purpose is to create an instance of an ecore model which
>>>>>>> contains as instances of a class named Person as I want.
>>>>>>> These are my steps:
>>>>>>> 1.- Create the ecore model. It is compoused by two classes:
>>>>>>> -People, which contains an EReference with multiplicity
>>>>>>> 0..* to the EClass Person.
>>>>>>> -Person, which contains only an EAttribute named "name"
>>>>>>> with String type.
>>>>>>> 2.- Create automatically the .genmodel file from the ecore
>>>>>>> model .
>>>>>>> 3.- Generate the Java code aotumatically fron the .genmodel.
>>>>>>> 4.- Launch an Eclipse application from the project.
>>>>>>> 5.- Create an instance of the ecore model.
>>>>>>> My probles is in the last step: I begin the model with an
>>>>>>> instance of People and hten I desire to create as number of
>>>>>>> instances of Person as I want but I cannot do that. I don't know
>>>>>>> the reason. I've seen the EXTLibrary example too many times but I
>>>>>>> cannot get my desired result.
>>>>>> The lack of there being a containment reference is the likely
>>>>>> reason. And note that even if you change it in the Ecore model,
>>>>>> the GenFeature properties for the feature will *not *change, so
>>>>>> you'll need to update those as well to support children and child
>>>>>> creation.
>>>>>>> Being more exaclty, the idea is to be a EClass which can generate
>>>>>>> as many Person as I want. That class is People. I've tried many
>>>>>>> possibilies changing the class properties obtaining different
>>>>>>> errors.
>>>>>>> Can somebody tell me how to create an ecore model that has an
>>>>>>> EClass which can generates as many instances of another class as
>>>>>>> I want?
>>>>>>> Thank you in advance!
>>>>>>>
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>
>>
>> ------------------------------------------------------------ ------------
>>

Re: [EMF] How to create an instance of an ecore model [message #66619 is a reply to message #66576]

Thu, 05 February 2009 09:28

Eclipse User

Originally posted by: cdamus.zeligsoft.com

Hi, Miguel,

I see from your posting in the EMF newsgroup that the People::people
reference is derived, transient, and volatile. That seems odd for a
containment reference (you don't want to serialize contained objects?)
but shouldn't interfere with OCL, as these characteristics of an
EReference don't matter to it.

The allInstances() operation uses a LazyExtentMap to find all instances
of an EClass. From the context element, it finds the topmost container
(usually a Resources) and uses getAllContents()/eAllContents() to scan
for the instances of any given EClass. Try debugging this process to
see why your Person instances aren't being found.

I don't have any ready ideas as to why this isn't working, so I'd be
debugging it if I had this problem ...

HTH,

Christian

Ed Merks wrote:
> Miguel,
>
> I don't know much about OCL. I've added the OCL newsgroup to the "to"
> list of the reply. Do doubt Christian will see it...
>
>
> Miguel Angel Garcia de Dios wrote:
>> Ih Ed Merks,
>> I've changed the property volatile of the "people" ERefeference of
>> "People" class, which is my container of Person. Then I can generate
>> instances of Person from "people" EReference but now I have a new
>> different problem: with the "OCL Interpreter Console" plugin installed
>> I have made many OCL queries but I've obtained an unexpected value
>> attached as a screenshot: Having three instances of Person, the OCL
>> query "Person.allInstances()" returns an empty result. But if I write
>> "self.name" (being the context an instance of Person) I obtain the
>> desired result ('Ada' for example). I think I have any wrong property
>> value because it seems like Person isntances are no related ro
>> something similar.
>>
>> Thank you!
>>
>> Miguel Angel Garcia de Dios wrote:
>>> Ed Merks,
>>> Yes, I did. I marked the feature as volatile.
>>> I think it cannot be so complicated. Maybe any value of a property is
>>> not correct so, to ensure that I'm going to attach screenshots for
>>> everything (it is not so much).
>>>
>>> I am really concerned with that because I think it should be easier.
>>> Thank you in advance!
>>>
>>> Ed Merks wrote:
>>>> Miguel,
>>>>
>>>> Did you mark the feature as volatile such that no code is generated
>>>> for it?
>>>>
>>>>
>>>> Miguel Angel Garcia de Dios wrote:
>>>>> Ed Merks,
>>>>> I have the containment property of my desired container class in
>>>>> true, the GenFeature properties are also update: containment=true
>>>>> and the GenEdit properties contains children=true and create
>>>>> children=true.
>>>>> I hope you can be more explicity with the solution of my problem
>>>>> please.
>>>>> The last error I've obtained is when I create My.container file
>>>>> from a Poeple object. Hten I click on it and I get the nex error:
>>>>>
>>>>> Unhandled event loop exception:
>>>>> java.lang.UnsupportedOperationException
>>>>> at Container.impl.PeopleImpl.getPeople(PeopleImpl.java:113)
>>>>> at Container.impl.PeopleImpl.eGet(PeopleImpl.java:141)
>>>>> at
>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1012)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1004)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:999)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.getChildre n(ItemProviderAdapter.java:338)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:397)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:384)
>>>>>
>>>>> at
>>>>> org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvid er.hasChildren(AdapterFactoryContentProvider.java:198)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2076)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.TreeViewer.isExpandable(TreeViewer .java:582)
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2102)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(Abst ractTreeViewer.java:2752)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.TreeViewer.updatePlus(TreeViewer.j ava:842)
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem( AbstractTreeViewer.java:828)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractT reeViewer.java:802)
>>>>>
>>>>> at
>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:70)
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.createChildren( AbstractTreeViewer.java:776)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.TreeViewer.createChildren(TreeView er.java:634)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.handleTreeExpan d(AbstractTreeViewer.java:1442)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.TreeViewer.handleTreeExpand(TreeVi ewer.java:927)
>>>>>
>>>>> at
>>>>> org.eclipse.jface.viewers.AbstractTreeViewer$4.treeExpanded( AbstractTreeViewer.java:1453)

>>>>>
>>>>> at
>>>>> org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListe ner.java:126)
>>>>>
>>>>> at
>>>>> org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :84)
>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1158)
>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1182)
>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1167)
>>>>> at
>>>>> org.eclipse.swt.widgets.Tree.gtk_test_expand_row(Tree.java:2 026)
>>>>> at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1572)
>>>>> at org.eclipse.swt.widgets.Display.windowProc(Display.java:4105 )
>>>>> at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native
>>>>> Method)
>>>>> at org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:57 92)
>>>>> at org.eclipse.swt.widgets.Display.eventProc(Display.java:1177)
>>>>> at
>>>>> org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Na tive
>>>>> Method)
>>>>> at
>>>>> org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS. java:1550)
>>>>> at
>>>>> org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :3031)
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:2382)
>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)
>>>>> at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:21 98)
>>>>> at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)
>>>>> at
>>>>> org.eclipse.core.databinding.observable.Realm.runWithDefault (Realm.java:288)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:488)
>>>>>
>>>>> at
>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>> at
>>>>> org.eclipse.ui.internal.ide.application.IDEApplication.start (IDEApplication.java:113)
>>>>>
>>>>> at
>>>>> org.eclipse.equinox.internal.app.EclipseAppHandle.run(Eclips eAppHandle.java:193)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:110)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:79)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:386)
>>>>>
>>>>> at
>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:179)
>>>>>
>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>> at
>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>
>>>>> at
>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>
>>>>> at java.lang.reflect.Method.invoke(Method.java:597)
>>>>> at
>>>>> org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 549)
>>>>> at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
>>>>> at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
>>>>> at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
>>>>>
>>>>> A lot of thanks!
>>>>> And always sorry for my bad English.
>>>>>
>>>>> Ed Merks wrote:
>>>>>> Miguel,
>>>>>>
>>>>>> Comments below.
>>>>>>
>>>>>>
>>>>>> Miguel Angel Garcia de Dios wrote:
>>>>>>> Hi,
>>>>>>> I think my question is easy for us but i have spend too much time
>>>>>>> in it:
>>>>>>> I want to create a simply ecore model and then i want to
>>>>>>> instanciate it and check some OCL queries on it.
>>>>>>> My purpose is to create an instance of an ecore model which
>>>>>>> contains as instances of a class named Person as I want.
>>>>>>> These are my steps:
>>>>>>> 1.- Create the ecore model. It is compoused by two classes:
>>>>>>> -People, which contains an EReference with multiplicity
>>>>>>> 0..* to the EClass Person.
>>>>>>> -Person, which contains only an EAttribute named "name"
>>>>>>> with String type.
>>>>>>> 2.- Create automatically the .genmodel file from the ecore
>>>>>>> model .
>>>>>>> 3.- Generate the Java code aotumatically fron the .genmodel.
>>>>>>> 4.- Launch an Eclipse application from the project.
>>>>>>> 5.- Create an instance of the ecore model.
>>>>>>> My probles is in the last step: I begin the model with an
>>>>>>> instance of People and hten I desire to create as number of
>>>>>>> instances of Person as I want but I cannot do that. I don't know
>>>>>>> the reason. I've seen the EXTLibrary example too many times but I
>>>>>>> cannot get my desired result.
>>>>>> The lack of there being a containment reference is the likely
>>>>>> reason. And note that even if you change it in the Ecore model,
>>>>>> the GenFeature properties for the feature will *not *change, so
>>>>>> you'll need to update those as well to support children and child
>>>>>> creation.
>>>>>>> Being more exaclty, the idea is to be a EClass which can generate
>>>>>>> as many Person as I want. That class is People. I've tried many
>>>>>>> possibilies changing the class properties obtaining different
>>>>>>> errors.
>>>>>>> Can somebody tell me how to create an ecore model that has an
>>>>>>> EClass which can generates as many instances of another class as
>>>>>>> I want?
>>>>>>> Thank you in advance!
>>>>>>>
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>
>>
>>
>> ------------------------------------------------------------ ------------
>>

Re: [EMF] How to create an instance of an ecore model [message #66661 is a reply to message #66619]

Thu, 05 February 2009 11:55

Eclipse User

Thank you Christian.

You advice me that the best way to resolve my problem is debugging the
process getAllContents()/eAllContents() but I do not know ho to do that,
sorry. I have my EMF project with my ecore and genmodel inside the
"model" folder and all the atomatically generated code from genmodel
file. Then I lunch an Eclipse Application and create an instance of my
ecore model and I evaluate OCl queries with the "OCL Interpreter
Console" plugin. How can I debug that? Where is the process you've
mentioned? Please help me and be patient with me: I do not familiarize
oneself with EMF.

Los of thanks in advence!

Christian W. Damus wrote:
> Hi, Miguel,
>
> I see from your posting in the EMF newsgroup that the People::people
> reference is derived, transient, and volatile. That seems odd for a
> containment reference (you don't want to serialize contained objects?)
> but shouldn't interfere with OCL, as these characteristics of an
> EReference don't matter to it.
>
> The allInstances() operation uses a LazyExtentMap to find all instances
> of an EClass. From the context element, it finds the topmost container
> (usually a Resources) and uses getAllContents()/eAllContents() to scan
> for the instances of any given EClass. Try debugging this process to
> see why your Person instances aren't being found.
>
> I don't have any ready ideas as to why this isn't working, so I'd be
> debugging it if I had this problem ...
>
> HTH,
>
> Christian
>
>
> Ed Merks wrote:
>> Miguel,
>>
>> I don't know much about OCL. I've added the OCL newsgroup to the "to"
>> list of the reply. Do doubt Christian will see it...
>>
>>
>> Miguel Angel Garcia de Dios wrote:
>>> Ih Ed Merks,
>>> I've changed the property volatile of the "people" ERefeference of
>>> "People" class, which is my container of Person. Then I can generate
>>> instances of Person from "people" EReference but now I have a new
>>> different problem: with the "OCL Interpreter Console" plugin
>>> installed I have made many OCL queries but I've obtained an
>>> unexpected value attached as a screenshot: Having three instances of
>>> Person, the OCL query "Person.allInstances()" returns an empty
>>> result. But if I write "self.name" (being the context an instance of
>>> Person) I obtain the desired result ('Ada' for example). I think I
>>> have any wrong property value because it seems like Person isntances
>>> are no related ro something similar.
>>>
>>> Thank you!
>>>
>>> Miguel Angel Garcia de Dios wrote:
>>>> Ed Merks,
>>>> Yes, I did. I marked the feature as volatile.
>>>> I think it cannot be so complicated. Maybe any value of a property
>>>> is not correct so, to ensure that I'm going to attach screenshots
>>>> for everything (it is not so much).
>>>>
>>>> I am really concerned with that because I think it should be easier.
>>>> Thank you in advance!
>>>>
>>>> Ed Merks wrote:
>>>>> Miguel,
>>>>>
>>>>> Did you mark the feature as volatile such that no code is generated
>>>>> for it?
>>>>>
>>>>>
>>>>> Miguel Angel Garcia de Dios wrote:
>>>>>> Ed Merks,
>>>>>> I have the containment property of my desired container class in
>>>>>> true, the GenFeature properties are also update: containment=true
>>>>>> and the GenEdit properties contains children=true and create
>>>>>> children=true.
>>>>>> I hope you can be more explicity with the solution of my problem
>>>>>> please.
>>>>>> The last error I've obtained is when I create My.container file
>>>>>> from a Poeple object. Hten I click on it and I get the nex error:
>>>>>>
>>>>>> Unhandled event loop exception:
>>>>>> java.lang.UnsupportedOperationException
>>>>>> at Container.impl.PeopleImpl.getPeople(PeopleImpl.java:113)
>>>>>> at Container.impl.PeopleImpl.eGet(PeopleImpl.java:141)
>>>>>> at
>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1012)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1004)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:999)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.getChildre n(ItemProviderAdapter.java:338)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:397)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:384)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvid er.hasChildren(AdapterFactoryContentProvider.java:198)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2076)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.jface.viewers.TreeViewer.isExpandable(TreeViewer .java:582)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2102)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(Abst ractTreeViewer.java:2752)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.jface.viewers.TreeViewer.updatePlus(TreeViewer.j ava:842)
>>>>>> at
>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem( AbstractTreeViewer.java:828)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractT reeViewer.java:802)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:70)
>>>>>> at
>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.createChildren( AbstractTreeViewer.java:776)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.jface.viewers.TreeViewer.createChildren(TreeView er.java:634)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.handleTreeExpan d(AbstractTreeViewer.java:1442)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.jface.viewers.TreeViewer.handleTreeExpand(TreeVi ewer.java:927)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer$4.treeExpanded( AbstractTreeViewer.java:1453)
>
>
>>>>>>
>>>>>> at
>>>>>> org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListe ner.java:126)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :84)
>>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1158)
>>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1182)
>>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1167)
>>>>>> at
>>>>>> org.eclipse.swt.widgets.Tree.gtk_test_expand_row(Tree.java:2 026)
>>>>>> at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1572)
>>>>>> at org.eclipse.swt.widgets.Display.windowProc(Display.java:4105 )
>>>>>> at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native
>>>>>> Method)
>>>>>> at
>>>>>> org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:57 92)
>>>>>> at org.eclipse.swt.widgets.Display.eventProc(Display.java:1177)
>>>>>> at
>>>>>> org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Na tive
>>>>>> Method)
>>>>>> at
>>>>>> org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS. java:1550)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :3031)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:2382)
>>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.access$4(Workbench.java:21 98)
>>>>>> at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)
>>>>>> at
>>>>>> org.eclipse.core.databinding.observable.Realm.runWithDefault (Realm.java:288)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:488)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>>> at
>>>>>> org.eclipse.ui.internal.ide.application.IDEApplication.start (IDEApplication.java:113)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.equinox.internal.app.EclipseAppHandle.run(Eclips eAppHandle.java:193)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:110)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:79)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:386)
>>>>>>
>>>>>> at
>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:179)
>>>>>>
>>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>>> at
>>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>>
>>>>>> at
>>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>>
>>>>>> at java.lang.reflect.Method.invoke(Method.java:597)
>>>>>> at
>>>>>> org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 549)
>>>>>> at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
>>>>>> at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
>>>>>> at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
>>>>>>
>>>>>> A lot of thanks!
>>>>>> And always sorry for my bad English.
>>>>>>
>>>>>> Ed Merks wrote:
>>>>>>> Miguel,
>>>>>>>
>>>>>>> Comments below.
>>>>>>>
>>>>>>>
>>>>>>> Miguel Angel Garcia de Dios wrote:
>>>>>>>> Hi,
>>>>>>>> I think my question is easy for us but i have spend too much
>>>>>>>> time in it:
>>>>>>>> I want to create a simply ecore model and then i want to
>>>>>>>> instanciate it and check some OCL queries on it.
>>>>>>>> My purpose is to create an instance of an ecore model which
>>>>>>>> contains as instances of a class named Person as I want.
>>>>>>>> These are my steps:
>>>>>>>> 1.- Create the ecore model. It is compoused by two classes:
>>>>>>>> -People, which contains an EReference with multiplicity
>>>>>>>> 0..* to the EClass Person.
>>>>>>>> -Person, which contains only an EAttribute named "name"
>>>>>>>> with String type.
>>>>>>>> 2.- Create automatically the .genmodel file from the ecore
>>>>>>>> model .
>>>>>>>> 3.- Generate the Java code aotumatically fron the .genmodel.
>>>>>>>> 4.- Launch an Eclipse application from the project.
>>>>>>>> 5.- Create an instance of the ecore model.
>>>>>>>> My probles is in the last step: I begin the model with an
>>>>>>>> instance of People and hten I desire to create as number of
>>>>>>>> instances of Person as I want but I cannot do that. I don't know
>>>>>>>> the reason. I've seen the EXTLibrary example too many times but
>>>>>>>> I cannot get my desired result.
>>>>>>> The lack of there being a containment reference is the likely
>>>>>>> reason. And note that even if you change it in the Ecore model,
>>>>>>> the GenFeature properties for the feature will *not *change, so
>>>>>>> you'll need to update those as well to support children and child
>>>>>>> creation.
>>>>>>>> Being more exaclty, the idea is to be a EClass which can
>>>>>>>> generate as many Person as I want. That class is People. I've
>>>>>>>> tried many possibilies changing the class properties obtaining
>>>>>>>> different errors.
>>>>>>>> Can somebody tell me how to create an ecore model that has an
>>>>>>>> EClass which can generates as many instances of another class as
>>>>>>>> I want?
>>>>>>>> Thank you in advance!
>>>>>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------ ------------
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------ ------------
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------ ------------
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------ ------------
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------ ------------
>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------ ------------
>>>>
>>>>
>>>
>>>
>>> ------------------------------------------------------------ ------------
>>>

Re: [EMF] How to create an instance of an ecore model [message #66742 is a reply to message #66661]

Fri, 06 February 2009 00:11

Eclipse User

Originally posted by: cdamus.zeligsoft.com

Hi, Miguel,

getAllContents() is a method of the Resourc interface that iterates all
EObjects contained in the resource. Similarly, eAllContents() is an
EObject method that iterates all of its contained objects.

Put a breakpoint in the get(Object) method of the
org.eclipse.ocl.LazyExtentMap class. Evaluate your the
Person.allInstances() expression and, when the breakpoint is reached,
step through the code to see what is the extent computed for the Person
class. You should be able to see why none of the objects that are
iterated in this method are determined to be instances of Person. I
don't have any good idea as to what is happening, I'm afraid.

If you need help with setting breakpoints and debugging, see the Java
Development User's Guide documentation in the Eclipse Help.

HTH,

Christian

Miguel Angel Garcia de Dios wrote:
> Thank you Christian.
>
> You advice me that the best way to resolve my problem is debugging the
> process getAllContents()/eAllContents() but I do not know ho to do that,
> sorry. I have my EMF project with my ecore and genmodel inside the
> "model" folder and all the atomatically generated code from genmodel
> file. Then I lunch an Eclipse Application and create an instance of my
> ecore model and I evaluate OCl queries with the "OCL Interpreter
> Console" plugin. How can I debug that? Where is the process you've
> mentioned? Please help me and be patient with me: I do not familiarize
> oneself with EMF.
>
> Los of thanks in advence!
>
>
> Christian W. Damus wrote:
>> Hi, Miguel,
>>
>> I see from your posting in the EMF newsgroup that the People::people
>> reference is derived, transient, and volatile. That seems odd for a
>> containment reference (you don't want to serialize contained objects?)
>> but shouldn't interfere with OCL, as these characteristics of an
>> EReference don't matter to it.
>>
>> The allInstances() operation uses a LazyExtentMap to find all
>> instances of an EClass. From the context element, it finds the
>> topmost container (usually a Resources) and uses
>> getAllContents()/eAllContents() to scan for the instances of any given
>> EClass. Try debugging this process to see why your Person instances
>> aren't being found.
>>
>> I don't have any ready ideas as to why this isn't working, so I'd be
>> debugging it if I had this problem ...
>>
>> HTH,
>>
>> Christian
>>
>>
>> Ed Merks wrote:
>>> Miguel,
>>>
>>> I don't know much about OCL. I've added the OCL newsgroup to the
>>> "to" list of the reply. Do doubt Christian will see it...
>>>
>>>
>>> Miguel Angel Garcia de Dios wrote:
>>>> Ih Ed Merks,
>>>> I've changed the property volatile of the "people" ERefeference of
>>>> "People" class, which is my container of Person. Then I can generate
>>>> instances of Person from "people" EReference but now I have a new
>>>> different problem: with the "OCL Interpreter Console" plugin
>>>> installed I have made many OCL queries but I've obtained an
>>>> unexpected value attached as a screenshot: Having three instances of
>>>> Person, the OCL query "Person.allInstances()" returns an empty
>>>> result. But if I write "self.name" (being the context an instance of
>>>> Person) I obtain the desired result ('Ada' for example). I think I
>>>> have any wrong property value because it seems like Person isntances
>>>> are no related ro something similar.
>>>>
>>>> Thank you!
>>>>
>>>> Miguel Angel Garcia de Dios wrote:
>>>>> Ed Merks,
>>>>> Yes, I did. I marked the feature as volatile.
>>>>> I think it cannot be so complicated. Maybe any value of a property
>>>>> is not correct so, to ensure that I'm going to attach screenshots
>>>>> for everything (it is not so much).
>>>>>
>>>>> I am really concerned with that because I think it should be easier.
>>>>> Thank you in advance!
>>>>>
>>>>> Ed Merks wrote:
>>>>>> Miguel,
>>>>>>
>>>>>> Did you mark the feature as volatile such that no code is
>>>>>> generated for it?
>>>>>>
>>>>>>
>>>>>> Miguel Angel Garcia de Dios wrote:
>>>>>>> Ed Merks,
>>>>>>> I have the containment property of my desired container class in
>>>>>>> true, the GenFeature properties are also update: containment=true
>>>>>>> and the GenEdit properties contains children=true and create
>>>>>>> children=true.
>>>>>>> I hope you can be more explicity with the solution of my problem
>>>>>>> please.
>>>>>>> The last error I've obtained is when I create My.container file
>>>>>>> from a Poeple object. Hten I click on it and I get the nex error:
>>>>>>>
>>>>>>> Unhandled event loop exception:
>>>>>>> java.lang.UnsupportedOperationException
>>>>>>> at Container.impl.PeopleImpl.getPeople(PeopleImpl.java:113)
>>>>>>> at Container.impl.PeopleImpl.eGet(PeopleImpl.java:141)
>>>>>>> at
>>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1012)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:1004)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjec tImpl.java:999)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.getChildre n(ItemProviderAdapter.java:338)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:397)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildre n(ItemProviderAdapter.java:384)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvid er.hasChildren(AdapterFactoryContentProvider.java:198)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2076)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.TreeViewer.isExpandable(TreeViewer .java:582)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(Ab stractTreeViewer.java:2102)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(Abst ractTreeViewer.java:2752)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.TreeViewer.updatePlus(TreeViewer.j ava:842)
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem( AbstractTreeViewer.java:828)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractT reeViewer.java:802)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator .java:70)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.createChildren( AbstractTreeViewer.java:776)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.TreeViewer.createChildren(TreeView er.java:634)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer.handleTreeExpan d(AbstractTreeViewer.java:1442)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.TreeViewer.handleTreeExpand(TreeVi ewer.java:927)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.jface.viewers.AbstractTreeViewer$4.treeExpanded( AbstractTreeViewer.java:1453)
>>
>>
>>
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListe ner.java:126)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :84)
>>>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1158)
>>>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1182)
>>>>>>> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1167)
>>>>>>> at
>>>>>>> org.eclipse.swt.widgets.Tree.gtk_test_expand_row(Tree.java:2 026)
>>>>>>> at org.eclipse.swt.widgets.Widget.windowProc(Widget.java:1572)
>>>>>>> at org.eclipse.swt.widgets.Display.windowProc(Display.java:4105 )
>>>>>>> at org.eclipse.swt.internal.gtk.OS._gtk_main_do_event(Native
>>>>>>> Method)
>>>>>>> at
>>>>>>> org.eclipse.swt.internal.gtk.OS.gtk_main_do_event(OS.java:57 92)
>>>>>>> at org.eclipse.swt.widgets.Display.eventProc(Display.java:1177)
>>>>>>> at
>>>>>>> org.eclipse.swt.internal.gtk.OS._g_main_context_iteration(Na tive
>>>>>>> Method)
>>>>>>> at
>>>>>>> org.eclipse.swt.internal.gtk.OS.g_main_context_iteration(OS. java:1550)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :3031)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.jav a:2382)
>>>>>>> at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.access$4(Workbench.java:21 98)
>>>>>>> at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)
>>>>>>> at
>>>>>>> org.eclipse.core.databinding.observable.Realm.runWithDefault (Realm.java:288)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Work bench.java:488)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.j ava:149)
>>>>>>> at
>>>>>>> org.eclipse.ui.internal.ide.application.IDEApplication.start (IDEApplication.java:113)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.equinox.internal.app.EclipseAppHandle.run(Eclips eAppHandle.java:193)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .runApplication(EclipseAppLauncher.java:110)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher .start(EclipseAppLauncher.java:79)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:386)
>>>>>>>
>>>>>>> at
>>>>>>> org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseS tarter.java:179)
>>>>>>>
>>>>>>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>>>>> at
>>>>>>> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
>>>>>>>
>>>>>>> at
>>>>>>> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
>>>>>>>
>>>>>>> at java.lang.reflect.Method.invoke(Method.java:597)
>>>>>>> at
>>>>>>> org.eclipse.equinox.launcher.Main.invokeFramework(Main.java: 549)
>>>>>>> at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
>>>>>>> at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
>>>>>>> at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
>>>>>>>
>>>>>>> A lot of thanks!
>>>>>>> And always sorry for my bad English.
>>>>>>>
>>>>>>> Ed Merks wrote:
>>>>>>>> Miguel,
>>>>>>>>
>>>>>>>> Comments below.
>>>>>>>>
>>>>>>>>
>>>>>>>> Miguel Angel Garcia de Dios wrote:
>>>>>>>>> Hi,
>>>>>>>>> I think my question is easy for us but i have spend too much
>>>>>>>>> time in it:
>>>>>>>>> I want to create a simply ecore model and then i want to
>>>>>>>>> instanciate it and check some OCL queries on it.
>>>>>>>>> My purpose is to create an instance of an ecore model which
>>>>>>>>> contains as instances of a class named Person as I want.
>>>>>>>>> These are my steps:
>>>>>>>>> 1.- Create the ecore model. It is compoused by two classes:
>>>>>>>>> -People, which contains an EReference with multiplicity
>>>>>>>>> 0..* to the EClass Person.
>>>>>>>>> -Person, which contains only an EAttribute named "name"
>>>>>>>>> with String type.
>>>>>>>>> 2.- Create automatically the .genmodel file from the ecore
>>>>>>>>> model .
>>>>>>>>> 3.- Generate the Java code aotumatically fron the .genmodel.
>>>>>>>>> 4.- Launch an Eclipse application from the project.
>>>>>>>>> 5.- Create an instance of the ecore model.
>>>>>>>>> My probles is in the last step: I begin the model with an
>>>>>>>>> instance of People and hten I desire to create as number of
>>>>>>>>> instances of Person as I want but I cannot do that. I don't
>>>>>>>>> know the reason. I've seen the EXTLibrary example too many
>>>>>>>>> times but I cannot get my desired result.
>>>>>>>> The lack of there being a containment reference is the likely
>>>>>>>> reason. And note that even if you change it in the Ecore model,
>>>>>>>> the GenFeature properties for the feature will *not *change, so
>>>>>>>> you'll need to update those as well to support children and
>>>>>>>> child creation.
>>>>>>>>> Being more exaclty, the idea is to be a EClass which can
>>>>>>>>> generate as many Person as I want. That class is People. I've
>>>>>>>>> tried many possibilies changing the class properties obtaining
>>>>>>>>> different errors.
>>>>>>>>> Can somebody tell me how to create an ecore model that has an
>>>>>>>>> EClass which can generates as many instances of another class
>>>>>>>>> as I want?
>>>>>>>>> Thank you in advance!
>>>>>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>>>
>>>>> ------------------------------------------------------------ ------------
>>>>>
>>>>>
>>>>
>>>>
>>>> ------------------------------------------------------------ ------------
>>>>
>>>>

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