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| Re: [Teneo] Duplicate method exception for subclass properties with same name when using proxy class [message #491166 is a reply to message #491163] |
Tue, 13 October 2009 14:07   |
 Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
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Hi Frank,
This seems indeed strange. Can you enter a bugzilla for this? It would be great if you have a small testmodel
reproducing this, if not then I can make my own ofcourse.
gr. Martin
Frank Grimm wrote:
> Dear newsgroup,
>
> Teneo (actually Hibernate's javassist) throws an
> javassist.bytecode.DuplicateMemberException (see below)
> when I use the following class hierarchy:
>
> * Class FunctionalDesignElement (abstract)
>
> * Class FunctionalParameter (superclass: FunctionalDesignElement)
> ** Attribute "type" : EString
>
> * Class FunctionInterfaceEnd (superclass: FunctionalDesignElement)
> ** Reference "type" : DataType (0..1; not contained)
>
> * Class DataType
>
> When I use Teneo's proxy mechanism (PersistenceOptions.SET_PROXY ==
> "true"), the following exception gets thrown by Javassist:
>
> 2364 [main] ERROR org.hibernate.proxy.pojo.BasicLazyInitializer -
> Javassist Enhancement failed: sdedummy.impl.FunctionalDesignElementImpl
> java.lang.RuntimeException: duplicate method: getType in
> sdedummy.FunctionalDesignElement_$$_javassist_0
> at javassist.util.proxy.ProxyFactory.createClass3(ProxyFactory. java:344)
> at javassist.util.proxy.ProxyFactory.createClass2(ProxyFactory. java:314)
> at javassist.util.proxy.ProxyFactory.createClass(ProxyFactory.j ava:273)
> at
> org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer. getProxyFactory(JavassistLazyInitializer.java:162)
> at
> org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.pos tInstantiate(JavassistProxyFactory..java:66)
> at
> org.eclipse.emf.teneo.hibernate.tuplizer.EMFTuplizer.buildPr oxyFactory(EMFTuplizer.java:269)
> at
> org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:151)
> at
> org.eclipse.emf.teneo.hibernate.tuplizer.EMFTuplizer.<init>(EMFTuplizer.java:83)
> [...]
> Caused by: javassist.bytecode.DuplicateMemberException: duplicate
> method: getType in sdedummy.FunctionalDesignElement_$$_javassist_0
> at javassist.bytecode.ClassFile.testExistingMethod(ClassFile.ja va:593)
> at javassist.bytecode.ClassFile.addMethod(ClassFile.java:577)
> at javassist.util.proxy.ProxyFactory.override(ProxyFactory.java :658)
> at
> javassist.util.proxy.ProxyFactory.overrideMethods(ProxyFacto ry.java:632)
> at javassist.util.proxy.ProxyFactory.make(ProxyFactory.java:552 )
> at javassist.util.proxy.ProxyFactory.createClass3(ProxyFactory. java:335)
>
> The error appears no matter what kind of inheritance mapping
> (PersistenceOptions.INHERITANCE_MAPPING) is used.
>
> Without using proxies, the error does not appear.
>
> The problem must have to do with the two properties with the same name
> (i.e. "type"). Renaming one of the properties makes the error go away. I
> clueless why it is a problem that several subclasses have properties
> with the same name.?
>
> Thanks,
> Frank
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Cell: +31 (0)6 288 48 943
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
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| Re: [Teneo] Duplicate method exception for subclass properties with same name when using proxy class [message #491179 is a reply to message #491172] |
Tue, 13 October 2009 14:43 |
Martin Taal
Messages: 5468
Registered: July 2009 |
Senior Member |
|
|
Thanks Frank, I have seen it, it will be a few days but if there is a solution then I will try to incorporate it in the
next build (a few days from now).
gr. Martin
Frank Grimm wrote:
> Dear Martin,
>
> On 10/13/2009 04:07 PM, Martin Taal wrote:
>
>> This seems indeed strange. Can you enter a bugzilla for this? It would
>> be great if you have a small testmodel reproducing this, if not then I
>> can make my own ofcourse.
>
> Bug report can be found here:
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=292151
>
> I'll add a sample Ecore model and my test code shortly.
>
> Thanks,
> Frank
>
>> Frank Grimm wrote:
>>> Dear newsgroup,
>>>
>>> Teneo (actually Hibernate's javassist) throws an
>>> javassist.bytecode.DuplicateMemberException (see below)
>>> when I use the following class hierarchy:
>>>
>>> * Class FunctionalDesignElement (abstract)
>>>
>>> * Class FunctionalParameter (superclass: FunctionalDesignElement)
>>> ** Attribute "type" : EString
>>>
>>> * Class FunctionInterfaceEnd (superclass: FunctionalDesignElement)
>>> ** Reference "type" : DataType (0..1; not contained)
>>>
>>> * Class DataType
>>>
>>> When I use Teneo's proxy mechanism (PersistenceOptions.SET_PROXY ==
>>> "true"), the following exception gets thrown by Javassist:
>>>
>>> 2364 [main] ERROR org.hibernate.proxy.pojo.BasicLazyInitializer -
>>> Javassist Enhancement failed: sdedummy.impl.FunctionalDesignElementImpl
>>> java.lang.RuntimeException: duplicate method: getType in
>>> sdedummy.FunctionalDesignElement_$$_javassist_0
>>> at
>>> javassist.util.proxy.ProxyFactory.createClass3(ProxyFactory. java:344)
>>> at
>>> javassist.util.proxy.ProxyFactory.createClass2(ProxyFactory. java:314)
>>> at
>>> javassist.util.proxy.ProxyFactory.createClass(ProxyFactory.j ava:273)
>>> at
>>> org.hibernate.proxy.pojo.javassist.JavassistLazyInitializer. getProxyFactory(JavassistLazyInitializer.java:162)
>>>
>>> at
>>> org.hibernate.proxy.pojo.javassist.JavassistProxyFactory.pos tInstantiate(JavassistProxyFactory..java:66)
>>>
>>> at
>>> org.eclipse.emf.teneo.hibernate.tuplizer.EMFTuplizer.buildPr oxyFactory(EMFTuplizer.java:269)
>>>
>>> at
>>> org.hibernate.tuple.entity.AbstractEntityTuplizer.<init>(AbstractEntityTuplizer.java:151)
>>>
>>> at
>>> org.eclipse.emf.teneo.hibernate.tuplizer.EMFTuplizer.<init>(EMFTuplizer.java:83)
>>>
>>> [...]
>>> Caused by: javassist.bytecode.DuplicateMemberException: duplicate
>>> method: getType in sdedummy.FunctionalDesignElement_$$_javassist_0
>>> at
>>> javassist.bytecode.ClassFile.testExistingMethod(ClassFile.ja va:593)
>>> at javassist.bytecode.ClassFile.addMethod(ClassFile.java:577)
>>> at javassist.util.proxy.ProxyFactory.override(ProxyFactory.java :658)
>>> at
>>> javassist.util.proxy.ProxyFactory.overrideMethods(ProxyFacto ry.java:632)
>>> at javassist.util.proxy.ProxyFactory.make(ProxyFactory.java:552 )
>>> at
>>> javassist.util.proxy.ProxyFactory.createClass3(ProxyFactory. java:335)
>>>
>>> The error appears no matter what kind of inheritance mapping
>>> (PersistenceOptions.INHERITANCE_MAPPING) is used.
>>>
>>> Without using proxies, the error does not appear.
>>>
>>> The problem must have to do with the two properties with the same name
>>> (i.e. "type"). Renaming one of the properties makes the error go away. I
>>> clueless why it is a problem that several subclasses have properties
>>> with the same name.?
>>>
>>> Thanks,
>>> Frank
>>
--
With Regards, Martin Taal
Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Cell: +31 (0)6 288 48 943
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org
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