Home » Modeling » EMF » Manage compatibility between model files
| Manage compatibility between model files [message #422895] |
Thu, 18 September 2008 04:33  |
Eclipse User |
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Hi !
I work on an RCP application built from EMF/GMF.
So, I have an ecore model.
However, version after version, this model evolves.
I would like that an user can load an model created with an old version in
a new version.
Are ecore2ecore functionalities done for that ?
Thanks
Guillaume
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| Re: Manage compatibility between model files (ecore2ecore) [message #422933 is a reply to message #422922] |
Fri, 19 September 2008 04:08  |
| Eclipse User |
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Ed,
thanks for your answer.
I try to reformulate my problem.
I have an ecore file which details a model.
I changed this model, I rename an EAttribute. So I make a new ecore file
matching with this modification.
I used ecore2ecore mapping to be able to load a file built from the old
model in editor built from the new model.
In my file built form the old model, I have an element (JOnAS) which has a
child (ejbContainer).
In the editor built from the old model, I have in 'Properties' view the
element properties when my element is focused.
In the editor built from the new model, these properties are wrong.
Instead the element properties, I have 3 properties 'Any', 'Any Attribute'
and 'Mixed'.
By example, 'Any' property has for value :
ejbContainers=org.eclipse.emf.ecore.xml.type.impl.AnyTypeImpl@3f45a8
(mixed: [], anyAttribute: [name=ejb])
Note that 'name' is a property of 'EJBContainer' element.
Where can this problem come from ?
From the mapping or from the code ?
Thanks
Guillaume
Ed Merks wrote:
> Guillaume,
> I'm really not sure based on your description what's going wrong. It
> sounds like you are getting instances of AnyType which are used when a
> proper match can't be found...
> Guillaume SOLDERA wrote:
>> Hi,
>> I found this recipe :
>> http://wiki.eclipse.org/EMF/Recipes#XMI.2FXML_Serialization_ Recipes
>>
>> Now, I can load an old model.
>> However, the elements of this model have bad properties.
>>
>> Every elements have 3 properties : 'Any', 'Any Attribute' and 'Mixed'.
>>
>>
>> How can I have good properties for my elements ?
>>
>> Thanks
>>
>> Guillaume
>>
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| Re: Manage compatibility between model files (ecore2ecore) [message #422964 is a reply to message #422933] |
Fri, 19 September 2008 12:30 |
| Eclipse User |
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Guillaume,
Comments below.
Guillaume SOLDERA wrote:
> Ed,
>
> thanks for your answer.
>
> I try to reformulate my problem.
>
> I have an ecore file which details a model.
> I changed this model, I rename an EAttribute. So I make a new ecore
> file matching with this modification.
>
> I used ecore2ecore mapping to be able to load a file built from the
> old model in editor built from the new model.
>
> In my file built form the old model, I have an element (JOnAS) which
> has a child (ejbContainer).
>
> In the editor built from the old model, I have in 'Properties' view
> the element properties when my element is focused.
>
> In the editor built from the new model, these properties are wrong.
> Instead the element properties, I have 3 properties 'Any', 'Any
> Attribute' and 'Mixed'.
>
> By example, 'Any' property has for value :
> ejbContainers=org.eclipse.emf.ecore.xml.type.impl.AnyTypeImpl@3f45a8
> (mixed: [], anyAttribute: [name=ejb])
As I though, it's creating an instance of AnyType.
>
>
> Note that 'name' is a property of 'EJBContainer' element.
>
>
> Where can this problem come from ? From the mapping or from the code ?
It may well be an issue with the new model itself. For example, it
sounds like an instance of AnyType is a valid value for the feature of
the new model, but I don't understand the structure of your model that
would allow that... Is this model XML Schema-based and has wildcards?
>
> Thanks
>
> Guillaume
>
>
>
> Ed Merks wrote:
>
>> Guillaume,
>
>> I'm really not sure based on your description what's going wrong. It
>> sounds like you are getting instances of AnyType which are used when
>> a proper match can't be found...
>
>
>> Guillaume SOLDERA wrote:
>>> Hi,
>>> I found this recipe :
>>> http://wiki.eclipse.org/EMF/Recipes#XMI.2FXML_Serialization_ Recipes
>>>
>>> Now, I can load an old model.
>>> However, the elements of this model have bad properties.
>>>
>>> Every elements have 3 properties : 'Any', 'Any Attribute' and 'Mixed'.
>>>
>>>
>>> How can I have good properties for my elements ?
>>>
>>> Thanks
>>>
>>> Guillaume
>>>
>
>
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| Re: Manage compatibility between model files (ecore2ecore) [message #423060 is a reply to message #422964] |
Mon, 22 September 2008 10:00 |
| Eclipse User |
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Ed,
Thanks for your answers.
I try with a very simple model.
I create my model ecore (model.ecore) in a new EMF project (called
SimpleModel):
This is the model :
<?xml version="1.0" encoding="UTF-8"?>
<ecore:EPackage xmi:version="2.0"
xmlns:xmi="http://www.omg.org/XMI"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore" name="simpleModel"
nsURI="http:///test/1.0.0/simpleModel" nsPrefix="simpleModel">
<eClassifiers xsi:type="ecore:EClass" name="Domain">
<eStructuralFeatures xsi:type="ecore:EAttribute" name="domainName"
lowerBound="1"
eType="ecore:EDataType
http://www.eclipse.org/emf/2002/Ecore#//EString"/>
</eClassifiers>
</ecore:EPackage>
I generated 'Model' code, 'Edit' code and 'Editor' code matching with this
ecore file.
Then I created an other EMF project (called SimpleModel2).
In this project, I created an ecore file (model_new.ecore). This ecore
file is the same except for the attribute name ('domainName' changed into
'nom')
<?xml version="1.0" encoding="UTF-8"?>
<ecore:EPackage xmi:version="2.0"
xmlns:xmi="http://www.omg.org/XMI"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore" name="simpleModel"
nsURI="http:///test/1.0.1/simpleModel" nsPrefix="simpleModel">
<eClassifiers xsi:type="ecore:EClass" name="Domain">
<eStructuralFeatures xsi:type="ecore:EAttribute" name="nom"
lowerBound="1" eType="ecore:EDataType
http://www.eclipse.org/emf/2002/Ecore#//EString"/>
</eClassifiers>
</ecore:EPackage>
I generated the 'Model' code, 'Edit' code and 'Editor' code.
In my SimpleModel2 project, I copy/paste 'model.ecore'.
From this file, I created the ecore2ecore file and mapped all elements
<?xml version="1.0" encoding="UTF-8"?>
<ecore2ecore:Ecore2EcoreMappingRoot xmi:version="2.0"
xmlns:xmi="http://www.omg.org/XMI"
xmlns:ecore2ecore="http://www.eclipse.org/emf/2004/Ecore2Ecore"
topToBottom="true">
<nested>
<nested>
<nested>
<inputs href="model.ecore#//Domain/domainName/@eGenericType"/>
<outputs href="model_new.ecore#//Domain/nom/@eGenericType"/>
</nested>
<inputs href="model.ecore#//Domain/domainName"/>
<outputs href="model_new.ecore#//Domain/nom"/>
</nested>
<inputs href="model.ecore#//Domain"/>
<outputs href="model_new.ecore#//Domain"/>
</nested>
<inputs href="model.ecore#/"/>
<outputs href="model_new.ecore#/"/>
</ecore2ecore:Ecore2EcoreMappingRoot>
Then I created the 'ecore2xml' file :
?xml version="1.0" encoding="UTF-8"?>
<ecore2xml:XMLMap xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore"
xmlns:ecore2xml="http://www.eclipse.org/emf/2005/Ecore2XML">
<ecoreToXMLInfo>
<key xsi:type="ecore:EPackage" href="model_new.ecore#/"/>
<value name="simpleModel"
targetNamespace="http:///test/1.0.0/simpleModel"/>
</ecoreToXMLInfo>
<ecoreToXMLInfo>
<key xsi:type="ecore:EClass" href="model_new.ecore#//Domain"/>
<value name="Domain" targetNamespace="http:///test/1.0.0/simpleModel"/>
</ecoreToXMLInfo>
<ecoreToXMLInfo>
<key xsi:type="ecore:EAttribute" href="model_new.ecore#//Domain/nom"/>
<value name="domainName"/>
</ecoreToXMLInfo>
</ecore2xml:XMLMap>
Then I added an 'org.eclipse.emf.ecore.extension_parser' :
<extension
point="org.eclipse.emf.ecore.extension_parser">
<parser
class="simpleModel.impl.ModelResourceFactoryImpl"
type="simplemodel">
</parser>
</extension>
'ModelResourceFactoryImpl' extends 'XMIResourceFactoryImp' and is written
from the recipe :
http://wiki.eclipse.org/EMF/Recipes#XMI.2FXML_Serialization_ Recipes
I created a file with the 'old' application and I put a name for
'domainName' attribute.
When I load this file in the 'new' application, 'Domain' element has 3
properties 'Any', 'AnyAttribute' and 'Mixed'.
'AnyAttribute' has for value : "domainName=nomDuDomaine" ('nomDuDomaine'
is the name that I put as value in 'old' application).
And 'Domain' has a child : "domainName='nomDuDomaine'"
When I click on this child, in 'Properties' View, I have a property
'Value' and an associated value 'nomDuDomaine'.
I would like have one element : 'Domain'. And when I click on this
element, I would like have in 'Properties' View a property 'nom' (the new
name of this attribute) and a value 'nomDuDomaine'.
Is there something that I do not (or wrong) ?
Thanks
Guillaume
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| Re: Manage compatibility between model files (ecore2ecore) [message #423065 is a reply to message #423060] |
Mon, 22 September 2008 11:00 |
| Eclipse User |
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Guillaume,
Could you export the projects involved to an archive (zip or jar) so
that I could import them and reproduce your problem? I'm traveling
today, so I won't be able to look at them until tomorrow.
Guillaume SOLDERA wrote:
> Ed,
>
> Thanks for your answers.
> I try with a very simple model.
> I create my model ecore (model.ecore) in a new EMF project (called
> SimpleModel): This is the model :
>
>
>
> <?xml version="1.0" encoding="UTF-8"?>
> <ecore:EPackage xmi:version="2.0"
> xmlns:xmi="http://www.omg.org/XMI"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore" name="simpleModel"
> nsURI="http:///test/1.0.0/simpleModel" nsPrefix="simpleModel">
> <eClassifiers xsi:type="ecore:EClass" name="Domain">
> <eStructuralFeatures xsi:type="ecore:EAttribute" name="domainName"
> lowerBound="1"
> eType="ecore:EDataType
> http://www.eclipse.org/emf/2002/Ecore#//EString"/>
> </eClassifiers>
> </ecore:EPackage>
>
>
>
>
> I generated 'Model' code, 'Edit' code and 'Editor' code matching with
> this ecore file.
>
>
> Then I created an other EMF project (called SimpleModel2). In this
> project, I created an ecore file (model_new.ecore). This ecore file is
> the same except for the attribute name ('domainName' changed into 'nom')
>
>
>
> <?xml version="1.0" encoding="UTF-8"?>
> <ecore:EPackage xmi:version="2.0"
> xmlns:xmi="http://www.omg.org/XMI"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore" name="simpleModel"
> nsURI="http:///test/1.0.1/simpleModel" nsPrefix="simpleModel">
> <eClassifiers xsi:type="ecore:EClass" name="Domain">
> <eStructuralFeatures xsi:type="ecore:EAttribute" name="nom"
> lowerBound="1" eType="ecore:EDataType
> http://www.eclipse.org/emf/2002/Ecore#//EString"/>
> </eClassifiers>
> </ecore:EPackage>
>
>
>
> I generated the 'Model' code, 'Edit' code and 'Editor' code.
> In my SimpleModel2 project, I copy/paste 'model.ecore'.
> From this file, I created the ecore2ecore file and mapped all elements
>
>
>
> <?xml version="1.0" encoding="UTF-8"?>
> <ecore2ecore:Ecore2EcoreMappingRoot xmi:version="2.0"
> xmlns:xmi="http://www.omg.org/XMI"
> xmlns:ecore2ecore="http://www.eclipse.org/emf/2004/Ecore2Ecore"
> topToBottom="true">
> <nested>
> <nested>
> <nested>
> <inputs href="model.ecore#//Domain/domainName/@eGenericType"/>
> <outputs href="model_new.ecore#//Domain/nom/@eGenericType"/>
> </nested>
> <inputs href="model.ecore#//Domain/domainName"/>
> <outputs href="model_new.ecore#//Domain/nom"/>
> </nested>
> <inputs href="model.ecore#//Domain"/>
> <outputs href="model_new.ecore#//Domain"/>
> </nested>
> <inputs href="model.ecore#/"/>
> <outputs href="model_new.ecore#/"/>
> </ecore2ecore:Ecore2EcoreMappingRoot>
>
>
>
> Then I created the 'ecore2xml' file :
>
>
> ?xml version="1.0" encoding="UTF-8"?>
> <ecore2xml:XMLMap xmi:version="2.0" xmlns:xmi="http://www.omg.org/XMI"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xmlns:ecore="http://www.eclipse.org/emf/2002/Ecore"
> xmlns:ecore2xml="http://www.eclipse.org/emf/2005/Ecore2XML">
> <ecoreToXMLInfo>
> <key xsi:type="ecore:EPackage" href="model_new.ecore#/"/>
> <value name="simpleModel"
> targetNamespace="http:///test/1.0.0/simpleModel"/>
> </ecoreToXMLInfo>
> <ecoreToXMLInfo>
> <key xsi:type="ecore:EClass" href="model_new.ecore#//Domain"/>
> <value name="Domain"
> targetNamespace="http:///test/1.0.0/simpleModel"/>
> </ecoreToXMLInfo>
> <ecoreToXMLInfo>
> <key xsi:type="ecore:EAttribute" href="model_new.ecore#//Domain/nom"/>
> <value name="domainName"/>
> </ecoreToXMLInfo>
> </ecore2xml:XMLMap>
>
>
>
>
> Then I added an 'org.eclipse.emf.ecore.extension_parser' :
>
> <extension
> point="org.eclipse.emf.ecore.extension_parser">
> <parser
> class="simpleModel.impl.ModelResourceFactoryImpl"
> type="simplemodel">
> </parser>
> </extension>
>
>
>
> 'ModelResourceFactoryImpl' extends 'XMIResourceFactoryImp' and is
> written from the recipe :
> http://wiki.eclipse.org/EMF/Recipes#XMI.2FXML_Serialization_ Recipes
>
>
> I created a file with the 'old' application and I put a name for
> 'domainName' attribute.
>
> When I load this file in the 'new' application, 'Domain' element has 3
> properties 'Any', 'AnyAttribute' and 'Mixed'.
> 'AnyAttribute' has for value : "domainName=nomDuDomaine"
> ('nomDuDomaine' is the name that I put as value in 'old' application).
>
> And 'Domain' has a child : "domainName='nomDuDomaine'"
> When I click on this child, in 'Properties' View, I have a property
> 'Value' and an associated value 'nomDuDomaine'.
>
> I would like have one element : 'Domain'. And when I click on this
> element, I would like have in 'Properties' View a property 'nom' (the
> new name of this attribute) and a value 'nomDuDomaine'.
>
>
>
> Is there something that I do not (or wrong) ?
>
> Thanks
>
> Guillaume
>
>
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