Re: unknown reference or circularity in instance dependences detected

Hi,
it seems that for some reason, scope of an attribute (whether it is a 
classifier level or instance level) is not set, so the metamodel you are 
trying to generate the interfaces from is not well-formed.
Martin

Bin Fu wrote:
> Dear Martin,
> 
> thanks for your answer. I found out the problem that is exactly as what 
> you said.
> After I solved this problem, I am able to load xml file into MDR without 
> problem. And then I selected some packages that I need and clicked righ 
> mouse to try to export them as JMI interfaces. Afterwards one error 
> message came: "Exception occurred in Request Processor" (Details is 
> shown following)
> 
> Now that xml file can already be loaded, why is there still problem?
> Thanks again!
> 
> Bin
> 
> 
> Annotation: Exception occurred in Request Processor
> java.lang.NullPointerException
>    at 
> org.netbeans.lib.jmi.mapping.JavaMapper$ClassContents.<init>(JavaMapper.java:621) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.JavaMapper$ClassContents.<init>(JavaMapper.java:592) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.JavaMapper.getClassContents(JavaMapper.java:587) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.JavaMapper.classInstanceTemplate(JavaMapper.java:548) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:344) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:331) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:331) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:331) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:331) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:331) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:331) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:331) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:331) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:335) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:335) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefObject(GenericMapper.java:335) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.GenericMapper.visitRefBaseObject(GenericMapper.java:399) 
> 
>    at 
> org.netbeans.lib.jmi.mapping.JMIMapperImpl.generate(JMIMapperImpl.java:57)
>    at 
> org.netbeans.modules.mdrexplorer.looks.reflect.actions.Map2JavaAction$1.run(Map2JavaAction.java:75) 
> 
>    at org.openide.util.Task.run(Task.java:136)
>    at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:328)
> [catch] at 
> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:670)
> 
> 
> 
> 
> Martin Matula wrote:
> 
>> The reason for this error usually is that there is xmi.idref element 
>> pointing to an object that does not exist. In this case, it seems that 
>> there is xmi.idref="String" (something references an object with 
>> id="String"), but there seems to be no object defined in the XMI file 
>> that would have the xmi.id attribute set to "String".
>> Martin
>>
>> Bin Fu wrote:
>>
>>> Hi,
>>>
>>> If I use MDR to process a parsered XML file, following error message 
>>> will occur
>>> What could be the reason?
>>>
>>> Bin
>>>
>>>
>>>
>>>
>>>
>>> javax.jmi.xmi.MalformedXMIException: 
>>> org.netbeans.lib.jmi.util.DebugException: Unknown reference or 
>>> circularity in instance dependences detected, bad reference: String
>>>    at 
>>> org.netbeans.lib.jmi.xmi.XMISaxReaderImpl.read(XMISaxReaderImpl.java:77)
>>>    at 
>>> org.netbeans.lib.jmi.xmi.XMISaxReaderImpl.read(XMISaxReaderImpl.java:59)
>>>    at 
>>> org.netbeans.modules.mdrexplorer.looks.reflect.actions.LoadXMIAction$1.run(LoadXMIAction.java:111) 
>>>
>>>    at org.openide.util.Task.run(Task.java:136)
>>>    at 
>>> org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:328)
>>> [catch] at 
>>> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:670) 
>>>
>>> ==>
>>> Annotation: XMI parsing error at line: 16685: Unknown reference or 
>>> circularity in instance dependences detected, bad reference: String
>>> org.netbeans.lib.jmi.util.DebugException: Unknown reference or 
>>> circularity in instance dependences detected, bad reference: String
>>>    at 
>>> org.netbeans.lib.jmi.xmi.XmiSAXReader.endElement(XmiSAXReader.java:252)
>>>    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1683)
>>>    at org.apache.crimson.parser.Parser2.content(Parser2.java:1926)
>>>    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1654)
>>>    at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:634)
>>>    at org.apache.crimson.parser.Parser2.parse(Parser2.java:333)
>>>    at 
>>> org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:448)
>>>    at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)
>>>    at org.netbeans.lib.jmi.xmi.XmiSAXReader.read(XmiSAXReader.java:118)
>>>    at org.netbeans.lib.jmi.xmi.XmiSAXReader.read(XmiSAXReader.java:99)
>>>    at 
>>> org.netbeans.lib.jmi.xmi.XMISaxReaderImpl.read(XMISaxReaderImpl.java:71)
>>>    at 
>>> org.netbeans.lib.jmi.xmi.XMISaxReaderImpl.read(XMISaxReaderImpl.java:59)
>>>    at 
>>> org.netbeans.modules.mdrexplorer.looks.reflect.actions.LoadXMIAction$1.run(LoadXMIAction.java:111) 
>>>
>>>    at org.openide.util.Task.run(Task.java:136)
>>>    at 
>>> org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:328)
>>> [catch] at 
>>> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:670) 
>>>
>>> ==>
>>> org.netbeans.lib.jmi.util.DebugException: Unknown reference or 
>>> circularity in instance dependences detected, bad reference: String
>>>    at 
>>> org.netbeans.lib.jmi.xmi.XmiElement$Content.endElement(XmiElement.java:395) 
>>>
>>>    at 
>>> org.netbeans.lib.jmi.xmi.XmiSAXReader.endElement(XmiSAXReader.java:240)
>>>    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1683)
>>>    at org.apache.crimson.parser.Parser2.content(Parser2.java:1926)
>>>    at org.apache.crimson.parser.Parser2.maybeElement(Parser2.java:1654)
>>>    at org.apache.crimson.parser.Parser2.parseInternal(Parser2.java:634)
>>>    at org.apache.crimson.parser.Parser2.parse(Parser2.java:333)
>>>    at 
>>> org.apache.crimson.parser.XMLReaderImpl.parse(XMLReaderImpl.java:448)
>>>    at javax.xml.parsers.SAXParser.parse(SAXParser.java:345)
>>>    at org.netbeans.lib.jmi.xmi.XmiSAXReader.read(XmiSAXReader.java:118)
>>>    at org.netbeans.lib.jmi.xmi.XmiSAXReader.read(XmiSAXReader.java:99)
>>>    at 
>>> org.netbeans.lib.jmi.xmi.XMISaxReaderImpl.read(XMISaxReaderImpl.java:71)
>>>    at 
>>> org.netbeans.lib.jmi.xmi.XMISaxReaderImpl.read(XMISaxReaderImpl.java:59)
>>>    at 
>>> org.netbeans.modules.mdrexplorer.looks.reflect.actions.LoadXMIAction$1.run(LoadXMIAction.java:111) 
>>>
>>>    at org.openide.util.Task.run(Task.java:136)
>>>    at 
>>> org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:328)
>>> [catch] at 
>>> org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:670) 
>>>
>>> ==>
>>>
>>>
>>
>>
>>
> 
> 
>