Re: unknown reference or circularity in instance dependences detected

Hi, Martin,

is there any way to execute the XML file with MDR step by step (such 
like "debug mode"), so that I can find what is needed in my XML file?
I found that there is a link to "source code" under mdr.netbeans.org, 
but I failed to find source code of MDR.

Thanks!
Kind regards

Bin



Martin Matula wrote:

> 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) 
>>>>
>>>> ==>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>>
>
>
>