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https://issues.apache.org/jira/browse/CMIS-518?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Ward updated CMIS-518:
----------------------------

    Description: 
We came across this issue in https://issues.alfresco.com/jira/browse/ALF-13088 
. This is affecting Alfresco OpenCMIS Extensions.

It would seem that the presence or absence of xalan.jar on the sending side can 
affect the receiver's ability to lookup attributes on an extension element.

The two examples given at

http://groups.google.com/group/alfresco-opencmis-extension/browse_thread/thread/f9d9152691e5a04f

are equivalent. They just use different ways of serializing the same namespaced 
XML.

I think the problem lies in the way that OpenCMIS deserializes extension 
elements. It strips the namespace from all attributes, loading their local name 
into a single map. That means xmlns:propertyDefinitionId and 
propertyDefinitionId:propertyDefinitionId may be considered to be the same 
attribute so one can overwrite the other.

The attached patch to 
org.apache.chemistry.opencmis.commons.impl.Converter.convertDomToCmisExtensionElement()
 fixed the issue for us, making it only pay attention to attributes in the 
element's namespace. What do you think?

  was:
We came across this issue in https://issues.alfresco.com/jira/browse/ALF-13088 
. This is affecting Alfresco OpenCMIS Extensions.

It would seem that the presence or absence of xalan.jar on the sending side can 
affect the receivers ability to lookup attributes on an extension element.

The two examples given at

http://groups.google.com/group/alfresco-opencmis-extension/browse_thread/thread/f9d9152691e5a04f

are equivalent. They just use different ways of serializing the same namespaced 
XML.

I think the lies in the way that OpenCMIS deserializes extension elements. It 
strips the namespace from all attributes, loading their local name into a 
single map. That means xmlns:propertyDefinitionId and 
propertyDefinitionId:propertyDefinitionId may be considered to be the same 
attribute so one can overwrite the other.

The attached patch to 
org.apache.chemistry.opencmis.commons.impl.Converter.convertDomToCmisExtensionElement()
 fixed the issue for us, making it only pay attention to attributes in the 
element's namespace. What do you think?

    
> Interoperability issues with deserialization of attributes in Extension 
> Elements
> --------------------------------------------------------------------------------
>
>                 Key: CMIS-518
>                 URL: https://issues.apache.org/jira/browse/CMIS-518
>             Project: Chemistry
>          Issue Type: Bug
>          Components: opencmis-commons
>    Affects Versions: OpenCMIS 0.7.0
>            Reporter: David Ward
>            Priority: Critical
>         Attachments: ALF13088.diff
>
>
> We came across this issue in 
> https://issues.alfresco.com/jira/browse/ALF-13088 . This is affecting 
> Alfresco OpenCMIS Extensions.
> It would seem that the presence or absence of xalan.jar on the sending side 
> can affect the receiver's ability to lookup attributes on an extension 
> element.
> The two examples given at
> http://groups.google.com/group/alfresco-opencmis-extension/browse_thread/thread/f9d9152691e5a04f
> are equivalent. They just use different ways of serializing the same 
> namespaced XML.
> I think the problem lies in the way that OpenCMIS deserializes extension 
> elements. It strips the namespace from all attributes, loading their local 
> name into a single map. That means xmlns:propertyDefinitionId and 
> propertyDefinitionId:propertyDefinitionId may be considered to be the same 
> attribute so one can overwrite the other.
> The attached patch to 
> org.apache.chemistry.opencmis.commons.impl.Converter.convertDomToCmisExtensionElement()
>  fixed the issue for us, making it only pay attention to attributes in the 
> element's namespace. What do you think?

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