| [Compare] How to compare Java Packages [message #521906] |
Fri, 19 March 2010 09:12  |
 mRoby88
Messages: 4
Registered: March 2010 |
Junior Member |
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Dear All,
I'm developing an Eclipse Plug-in that needs to be able to compute the diff between Java Source files as well as Java Packages, as "Compare with Each other" Eclipse's functionality does.
Can EMF Compare help me? I installed in Eclipse all the materials as well as downloaded all the CVS projects via the *.psf file but I'm not able to use it as I want to.
I already take a look at the Stand-Alone project, as suggested in many threads, but it does not help since I reported errors while using it.
Loading resources.
org.eclipse.emf.ecore.resource.Resource$IOWrappedException: Content is not allowed in prolog.
at org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java:201)
at org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doLoad(XMLResourceImpl.java:180)
at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1494)
at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1282)
at org.eclipse.emf.compare.util.ModelUtils.load(ModelUtils.java:320)
at org.eclipse.emf.compare.util.ModelUtils.load(ModelUtils.java:218)
at ExampleLauncher.main(ExampleLauncher.java:64)
Caused by: org.xml.sax.SAXParseException: Content is not allowed in prolog.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:174)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:388)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1414)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:1039)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:648)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:807)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:737)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:107)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1205)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:522)
at javax.xml.parsers.SAXParser.parse(SAXParser.java:395)
at org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl.java:181)
... 6 more
Can someone, please, provide me a snippet of code that can help me comparing two Java Packages?
How can I fix the error above?
The plug-in displays a pop-up menu when in the Package Explorer the user selects two resources.
- Comparing files is done using org.eclipse.compare
- Comparing Packages is not implemented so far.
Moreover, one of the two packages in the comparison has to be a remote version (SVN, CVS...) so, if I'm not wrong I should use a 3-way comparison.
I'd like to use EMF compare to do that. Seems interesting but I cannot manage to have it working.
The idea is to have the user to select two packages locally, at the beginning, and then compute the diff over all the classes belonging to that package.
Next step will be to select one package and let the plug-in took the other term of comparison from the repository.
Best regards and thank in advance,
Roberto M.
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| Re: [Compare] How to compare Java Packages [message #521921 is a reply to message #521913] |
Fri, 19 March 2010 10:05  |
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This is a multi-part message in MIME format.
--------------030106080906090004080809
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Hi Roberto,
I must admit I don't really see what you're trying to do. EMF Compare is
meant to compare model files, not Java files (neither is it meant to
compare the java package which are directories).
You could use EMF Compare to compare java package if you created a Java
metamodel to represent Java information ... that would also require you
to create your own Java parser so as to store correct information in
this model about the files to compare... I doubt that's what you're
searching for.
Moreover, Eclipse already supports comparing Java packages (select two
packages => right click => select the menu "Compare with" => then the
item "Each Other"). What doesn't please you with this package comparison?
Laurent Goubet
Obeo
Cyril Jaquier wrote:
> Hi Roberto,
>
> Comments below.
>
>> Loading resources.
>>
>> org.eclipse.emf.ecore.resource.Resource$IOWrappedException: Content is
>> not allowed in prolog.
>> at
>> org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl. java:201)
>> at
>> org.eclipse.emf.ecore.xmi.impl.XMLResourceImpl.doLoad(XMLRes ourceImpl.java:180)
>>
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(Resour ceImpl.java:1494)
>>
>> at
>> org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(Resour ceImpl.java:1282)
>>
>> at org.eclipse.emf.compare.util.ModelUtils.load(ModelUtils.java :320)
>> at org.eclipse.emf.compare.util.ModelUtils.load(ModelUtils.java :218)
>> at ExampleLauncher.main(ExampleLauncher.java:64)
>> Caused by: org.xml.sax.SAXParseException: Content is not allowed in
>> prolog.
>> at
>> com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper. createSAXParseException(ErrorHandlerWrapper.java:195)
>>
>> at
>> com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper. fatalError(ErrorHandlerWrapper.java:174)
>>
>> at
>> com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.rep ortError(XMLErrorReporter.java:388)
>>
>> at
>> com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFat alError(XMLScanner.java:1414)
>>
>> at
>> com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerIm pl$PrologDriver.next(XMLDocumentScannerImpl.java:1039)
>>
>> at
>> com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerIm pl.next(XMLDocumentScannerImpl.java:648)
>>
>> at
>> com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentS cannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java: 510)
>>
>> at
>> com.sun.org.apache.xerces.internal.parsers.XML11Configuratio n.parse(XML11Configuration.java:807)
>>
>> at
>> com.sun.org.apache.xerces.internal.parsers.XML11Configuratio n.parse(XML11Configuration.java:737)
>>
>> at
>> com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(X MLParser.java:107)
>>
>> at
>> com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser .parse(AbstractSAXParser.java:1205)
>>
>> at
>> com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSA XParser.parse(SAXParserImpl.java:522)
>>
>> at javax.xml.parsers.SAXParser.parse(SAXParser.java:395)
>> at
>> org.eclipse.emf.ecore.xmi.impl.XMLLoadImpl.load(XMLLoadImpl. java:181)
>> ... 6 more
>>
>>
>> Can someone, please, provide me a snippet of code that can help me
>> comparing two Java Packages?
>> How can I fix the error above?
>>
>
> That's exactly the stacktrace I got while trying to load a zipped
> resource. Have a look at:
>
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=306016
>
> and the thread "Default options and Resource#load" in this newsgroup.
>
> Regards,
> Cyril
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