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https://issues.apache.org/jira/browse/CMIS-573?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13468792#comment-13468792
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Florian Müller commented on CMIS-573:
-------------------------------------
It is certainly possible to send extensions from the client to the repository
and vice versa - if both, client and server, understand them. As you said
Alfresco does that with aspects. But the extensions that Alfresco sends from
the client to server are different to the extensions it sends from the server
to the client. They are not just turned around and sent back.
Have you tried rebuilding the extension objects on the client side? When you
send extensions from the server to the client, some technical attributes are
added to make it valid XML. Those technical attributes cannot be sent back
without conflicts.
You should look at extensions only as the last resort. Custom properties can be
cover with CMIS object types and ACLs are supported by CMIS.
> CmisExtensionElement update fails
> ---------------------------------
>
> Key: CMIS-573
> URL: https://issues.apache.org/jira/browse/CMIS-573
> Project: Chemistry
> Issue Type: Bug
> Affects Versions: OpenCMIS 0.6.0
> Environment: OSX 10.8.2
> Reporter: linzhixing
>
> I'm now developing a document management system implementing CMIS
> specification, using Apache Chemistry OpenCMIS 0.6.0.
> My CMIS repository is for the present almost already working, but
> CmisExtensionElement update function fails.
> I would to know if it is really an error, or there is a better and correct
> way to update CmisExtensionElement.
> of course I read the following article "Adding CMIS extensions (Server)",
> http://chemistry.apache.org/java/how-to/how-to-add-extension.html
> but it describes ObjectDataImpl, not CmisObject or Document object's update
> itself.
> Here is my code.
> --------------------------------------------------------------------------------------
> //Get the document to be updated
> Document doc = (Document) facade.getSession().getObject(getModel().getId());
> //Prepare update properties except CmisExtensionElement
> Map<String, Object> props = new HashMap<String, Object>();
> props.put(PropertyIds.NAME, getModel().getName());
> if (getModel().getUpload() != null) setAttachment(doc);
>
> //Prepare CmisExtensionElement
> Session session = facade.getSession();
> String repositoryId = session.getRepositoryInfo().getId();
> Holder<String> objectHolder = new Holder<String>(getModel().getId());
> Set<Updatability> updatebility = new HashSet<Updatability>();
> updatebility.add(Updatability.READWRITE);
> Properties properties = session.getObjectFactory().convertProperties(props,
> doc.getType(), updatebility);
> properties.setExtensions(convertCmisExtensionElement(doc.getExtensions(ExtensionLevel.OBJECT)));
> //Update the document with the properties including CmisExtensionElement
> facade.getSession().getBinding().getObjectService().updateProperties(
> repositoryId, objectHolder, null,
> properties, null);
> --------------------------------------------------------------------------------------
> "updateProperties" method in the code fails, though when CmisExtensionElement
> is not set successfully.
> The error is as follows:
> --------------------------------------------------------------------------------------
> org.apache.chemistry.opencmis.commons.exceptions.CmisRuntimeException:
> Exception: NAMESPACE_ERR: An attempt is made to create or change an object in
> a way which is incorrect with regard to namespaces.
> at
> org.apache.chemistry.opencmis.commons.impl.Converter.convertExtension(Converter.java:2587)
> at
> org.apache.chemistry.opencmis.commons.impl.Converter.convert(Converter.java:1450)
> at
> org.apache.chemistry.opencmis.client.bindings.spi.atompub.ObjectServiceImpl.updateProperties(ObjectServiceImpl.java:273)
> at
> jp.aegif.struts2cmisexplorer.struts2actions.UpdateDocumentAction.executeUpdate(UpdateDocumentAction.java:243)
> at
> jp.aegif.struts2cmisexplorer.struts2actions.UpdateDocumentAction.execute(UpdateDocumentAction.java:82)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:441)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:280)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:243)
> at
> com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:165)
> at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252)
> at
> org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
> at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
> at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)
> at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:179)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:306)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:89)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:130)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:267)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:126)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:138)
> at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:165)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:179)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:176)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237)
> at
> org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
> at
> org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:488)
> at
> org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:395)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
> at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
> at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
> at
> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:766)
> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
> at
> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at org.mortbay.jetty.Server.handle(Server.java:326)
> at
> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
> at
> org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:945)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:756)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:218)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:410)
> at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)
> Caused by: org.w3c.dom.DOMException: NAMESPACE_ERR: An attempt is made to
> create or change an object in a way which is incorrect with regard to
> namespaces.
> at
> com.sun.org.apache.xerces.internal.dom.AttrNSImpl.setName(AttrNSImpl.java:105)
> at
> com.sun.org.apache.xerces.internal.dom.AttrNSImpl.<init>(AttrNSImpl.java:74)
> at
> com.sun.org.apache.xerces.internal.dom.CoreDocumentImpl.createAttributeNS(CoreDocumentImpl.java:2138)
> at
> com.sun.org.apache.xerces.internal.dom.ElementImpl.setAttributeNS(ElementImpl.java:656)
> at
> org.apache.chemistry.opencmis.commons.impl.Converter.convertCmisExtensionElementToNode(Converter.java:2697)
> at
> org.apache.chemistry.opencmis.commons.impl.Converter.convertExtension(Converter.java:2582)
> ... 71 more
> --------------------------------------------------------------------------------------
> As far as I investigated, namespace key-values are automatically included
> into the CmisExtentionElement's attributes, like:
> --------------------------------------------------------------------------------------
> [{http://hoge.jp/MyCmis/}aspects
> {ns3=http://docs.oasis-open.org/ns/cmis/messaging/200908/,
> aspects=http://hoge.jp/MyCmis/, xmlns=http://hoge.jp/MyCmis/}:
> [{http://hoge.jp/MyCmis/}customProperty1 {title=customevalue1,
> ns0=http://hoge.jp/MyCmis/}: ], {http://hoge.jp/MyCmis/}pastVersions
> {v1=doc_5_attach_1, ns2=http://hoge.jp/MyCmis/, v0=doc_5_attach_0,
> ns1=http://hoge.jp/MyCmis/,
> ns3=http://docs.oasis-open.org/ns/cmis/messaging/200908/,
> ns0=http://hoge.jp/MyCmis/, v2=doc_5_attach_2,
> pastVersions=http://hoge.jp/MyCmis/, xmlns=http://hoge.jp/MyCmis/}: dummy]
> --------------------------------------------------------------------------------------
> "ns0","ns1","ns2", "ns3", and "xlmns" are the namespaces.
> My CMIS repository doesn't output any namespaces and they are already
> included when I got "doc.getExtensions(ExtensionLevel.OBJECT)" from my CMIS
> repository.
> I debugged NAMESPACE error and the "xmlns" article is critical.
> Removing "xmlns" key-value from the attribute can avoid the namespace error,
> but then I got the error:
> --------------------------------------------------------------------------------------
> org.apache.chemistry.opencmis.commons.exceptions.CmisRuntimeException: Object
> Info is missing!
> at
> org.apache.chemistry.opencmis.client.bindings.spi.atompub.AbstractAtomPubService.convertStatusCode(AbstractAtomPubService.java:452)
> at
> org.apache.chemistry.opencmis.client.bindings.spi.atompub.AbstractAtomPubService.put(AbstractAtomPubService.java:595)
> at
> org.apache.chemistry.opencmis.client.bindings.spi.atompub.AbstractAtomPubService.put(AbstractAtomPubService.java:581)
> at
> org.apache.chemistry.opencmis.client.bindings.spi.atompub.ObjectServiceImpl.updateProperties(ObjectServiceImpl.java:278)
> --------------------------------------------------------------------------------------
> So, what can I do to update CmisExtensionElement?
> Thanks in advance.
> Best regards,
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