[mdr-users] RE : [mdr-users] Restoring data from XMI

Can you elaborate more on this? I dont't understand what you meand by
nested packages. I read the MOF1.4 specification, It isn't clear at all
for me.

What suprised me is that I could work, create instances commit
transactions. I could even start and restart MDR several times. I
managed to save extents. But reloading XMI is an issue. 

Can you tell me what could be a solution?

Regards.

Olivier.

-----Message d'origine-----
De : Martin Matula [mailto:[email protected]] 
Envoyé : jeudi 7 avril 2005 10:34
À : [email protected]
Objet : Re: [mdr-users] Restoring data from XMI


Olivier,
clustering is not supported for nested packages. From your description 
it seems that your MoodGraphable package is nested.
Regards,
Martin

Olivier RICHAUD wrote:

>Hi Martin,
>
>I have a problem I've never had when restoring instances of object from

>XMI. When I restore my system, here are the steps I follow : 1. I 
>restore all my models from their corresponding XMI files. I create an 
>extent - calling createExtent("name", null, null) - and use an XMI 
>reader to load data into the extent. 2. For each set of objects, I get 
>the top level package of the corresponding model and pass it to 
>createExtent - calling createExtent("name", topLevelPackage, null) and 
>of course, reload with an XmiReader the objects.
>
>This worked fine without clustered. Now, we use clustered packages, as 
>you explained how to use them. We can : 1. load a model (see 
>STBPM_1_7.xmi) and dynamically cluster package mood.diagrams so that we

>can make some of our class inherits from mood.diagrams.MoodGraphable.
>2. Of course, we can create instacnes of objects which classes are
>described into mood.diagrams.
>3. We are able to backup our model and our space of objects into XMI
>files (those which are attached). You can notice that since our classes
>inherits from MoodGraphable which has a representations association,
the
>XMI contains links (see tag
>mood.diagrams.MoodGraphable.representations).
>
>In order to use clustering, we have added import directives and we pass

>a RefPackage array to createExtent (for both creating the model and the
>space) which contains a RefPackage (the extent of model containing the 
>clustered package). The model is correctly restored.
>
>Now the problem is with restoring data : we can't restore data from 
>STBPM2004.xmi. I get the following exception :
>
>22:07:42,223 ERROR [STDERR] org.netbeans.lib.jmi.util.DebugException:
>Element name cannot be resolved, unknown package: 
>mood.diagrams.MoodGraphable.representations
>22:07:42,223 ERROR [STDERR] 	at
>org.netbeans.lib.jmi.xmi.XmiContext.resolveElementName(XmiContext.java:
>5
>27)
>22:07:42,223 ERROR [STDERR] 	at
>org.netbeans.lib.jmi.xmi.XmiElement$Instance.startSubElement(XmiElement
.
>java:502)
>22:07:42,223 ERROR [STDERR] 	at
>org.netbeans.lib.jmi.xmi.XmiSAXReader.startElement(XmiSAXReader.java:21
9
>)
>22:07:42,223 ERROR [STDERR] 	at
>org.apache.xerces.parsers.AbstractSAXParser.startElement(AbstractSAXPar
s
>er.java:434)
>22:07:42,223 ERROR [STDERR] 	at
>org.apache.xerces.impl.XMLNamespaceBinder.startElement(XMLNamespaceBind
e
>r.java:571)
>22:07:42,233 ERROR [STDERR] 	at
>org.apache.xerces.impl.dtd.XMLDTDValidator.startElement(XMLDTDValidator
.
>java:796)
>22:07:42,233 ERROR [STDERR] 	at
>org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanStartElement(
X
>MLDocumentFragmentScannerImpl.java:752)
>22:07:42,233 ERROR [STDERR] 	at
>org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDi
s
>patcher.dispatch(XMLDocumentFragmentScannerImpl.java:1454)
>22:07:42,233 ERROR [STDERR] 	at
>org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLD
o
>cumentFragmentScannerImpl.java:333)
>22:07:42,233 ERROR [STDERR] 	at
>org.apache.xerces.parsers.StandardParserConfiguration.parse(StandardPar
s
>erConfiguration.java:529)
>22:07:42,233 ERROR [STDERR] 	at
>org.apache.xerces.parsers.StandardParserConfiguration.parse(StandardPar
s
>erConfiguration.java:585)
>22:07:42,233 ERROR [STDERR] 	at
>org.apache.xerces.parsers.XMLParser.parse(XMLParser.java:147)
>22:07:42,233 ERROR [STDERR] 	at
>org.apache.xerces.parsers.AbstractSAXParser.parse(AbstractSAXParser.jav
a
>:1148)
>22:07:42,233 ERROR [STDERR] 	at
>javax.xml.parsers.SAXParser.parse(Unknown Source)
>22:07:42,233 ERROR [STDERR] 	at
>org.netbeans.lib.jmi.xmi.XmiSAXReader.read(XmiSAXReader.java:136)
>22:07:42,233 ERROR [STDERR] 	at
>org.netbeans.lib.jmi.xmi.XmiSAXReader.read(XmiSAXReader.java:98)
>22:07:42,233 ERROR [STDERR] 	at
>org.netbeans.lib.jmi.xmi.XMISaxReaderImpl.read(XMISaxReaderImpl.java:37
)
>
>
>
>Sure, I have missed something, but what?
>
>Thanks for your help.
>
>Olivier.
>