Get specific version content

[nicocsgamer]

Hi !

I have versionable node and I try to retrieve content of a specific version of a content node. For exemple i have a node called text.txt with 3 versions: 1.0, 1.1 and 1.2.

I would retrieve content of version 1.1.

For the moment  :

I create a node with content.
2 add versionnable apsect.
3 update content -> create different versions.
4 try to retrieve content :

            


VersionHistory versionHistory =  WebServiceFactory.getAuthoringService().getVersionHistory(ReferenceFactory.newReference(uuid, nodePath));
            
            Version[] versions = versionHistory.getVersions();
          
          for(Version nodeVersion : versions) {
             if(nodeVersion.getLabel().equals(version)) {
                InputStream result = null;

Reference reference = new Reference(new Store(Constants.WORKSPACE_STORE, "lightWeightVersionStore"), nodeVersion.getId().getUuid(), nodeVersion.getId().getPath());
        Predicate predicate = new Predicate(new Reference[] { reference }, new Store(Constants.WORKSPACE_STORE, "lightWeightVersionStore"), null);

                Content[] contents = WebServiceFactory.getContentService().read(predicate, Constants.TYPE_CONTENT);
                 result = ContentUtils.getContentAsInputStream(contents[0]);
                 return result;
             }
          }

‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Any suggestions ?

Thanks  a lot

[morpheus]

what´s the problem ? , please more precisely

[nicocsgamer]

Hi !

I have this error :

org.alfresco.webservice.util.WebServiceException: Unable to get content as inputStream.
   at org.alfresco.webservice.util.ContentUtils.getContentAsInputStream(ContentUtils.java:128)
   at com.excilys.alfresco.service.impl.ContentService.getContentAsInputStream(ContentService.java:281)
   at com.excilys.alfresco.service.impl.ContentServiceTest.getContentAsInputStreamShouldShould(ContentServiceTest.java:215)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   at java.lang.reflect.Method.invoke(Method.java:616)
   at org.junit.internal.runners.TestMethodRunner.executeMethodBody(TestMethodRunner.java:99)
   at org.junit.internal.runners.TestMethodRunner.runUnprotected(TestMethodRunner.java:81)
   at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
   at org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75)
   at org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45)
   at org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:75)
   at org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:36)
   at org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42)
   at org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34)
   at org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52)
   at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
   at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: java.net.MalformedURLException: no protocol: null?ticket=TICKET_ef650f26-6394-11dd-849f-c75dd430314d
   at java.net.URL.<init>(URL.java:583)
   at java.net.URL.<init>(URL.java:480)
   at java.net.URL.<init>(URL.java:429)
   at org.alfresco.webservice.util.ContentUtils.getContentAsInputStream(ContentUtils.java:122)
   … 22 more

[morpheus]

is the Content[] null ?
or
there is an Malformed URL, look at your References

[morpheus]

have you tried to get the content with ContentUtils.getContentAsString() ?

[nicocsgamer]

Its the same thing and my references are right.

[morpheus]

ok there might an other reason , i recognized yesterday !
look at the URL the read Request receices from the server is this ok ? , you can watch that by capturing the SOAP message with a tool like tcpmon

[djenk]

I had the same problem and addressed it by changing the type of the store to "versionStore" from Constants.WORKSPACE_STORE.  Note that there is nothing defined in the Constants class for this.  I figured this out by looking at how Alfresco builds the URL based on the URL and what URL is used within the web client for retrieving previous versions.  Not sure if this is the proper way to retrieve version content (I'm a newbie to Alfresco), but it worked for me.

From…
        private Store versionStore = new Store(Constants.WORKSPACE_STORE, "lightWeightVersionStore");

To…
   private Store versionStore = new Store("versionStore", "lightWeightVersionStore");

Hope this helps.

[thierensbart]

I have the same problem.

The problem is: it downloads some versions of a document without problems, but then it crashes at one specific version (1.0).

my log:

[2009-11-27 06:08:12] exporting version 1.1 for randomdocument.doc (229.50 kB)
[2009-11-27 06:08:12] exporting version 1.0 for randomdocument.doc (0.00 B)
[2009-11-27 06:08:12] ////////// Exception Class: class org.alfresco.webservice.util.WebServiceException
[2009-11-27 06:08:12] ////////// Exception Message: Unable to get content as inputStream.
[2009-11-27 06:08:12] ////////// Exception Cause: java.net.MalformedURLException: no protocol: null?ticket=TICKET_eecd68c090194b694b7ac81aedac32c92fcccc79‍‍‍‍‍‍

It also says the size = 0.00 B, which it isn't.

For some reason it creates a null-url.  Don't know why.

My store is already set to

private Store versionStore = new Store("versionStore", "lightWeightVersionStore");‍

Anyone have an idea?


edit:
it doesn't give errors for every document.  most versioned documents are downloaded perfectly.

[ameenulla]

I am getting following error while fetching file   

public  InputStream fetchFile( String alfrescoPath) throws Exception 
   {
      InputStream is = null;
      if(null!=alfrescoPath )
      {
         AuthenticationDetails details=   WebServiceClient.startSession(getAlfUser(0), getAlfPassword(0));
         try 
         {
            Store store = new Store(Constants.WORKSPACE_STORE, "SpacesStore");
            Reference nodeRef = new Reference(store, null, alfrescoPath);
   
            Content[] contArr = WebServiceClient.getContentService(details).read(new Predicate(new Reference[] { nodeRef }, store, null), Constants.PROP_CONTENT);
            Content content = contArr[0];
            
            is = ContentUtils.getContentAsInputStream(content);
            
         } 
         finally 
         {
            WebServiceClient.endSession(details);
         }
      }
      return is;
   }
   ‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

org.alfresco.webservice.util.WebServiceException: Unable to get content as inputStream.
        at org.alfresco.webservice.util.ContentUtils.getContentAsInputStream(ContentUtils.java:139)
        at com.rtq.dms.AlfrescoDmsManagement.fetchFile(AlfrescoDmsManagement.java:207)
        at com.rtq.processinitiator.servlets.downloadServlet.service(downloadServlet.java:41)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at sun.reflect.GeneratedMethodAccessor1466.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:606)
        at com.liferay.portal.kernel.bean.ClassLoaderBeanHandler.invoke(ClassLoaderBeanHandler.java:67)
        at com.sun.proxy.$Proxy753.doFilter(Unknown Source)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDirectCallFilter(InvokerFilterChain.java:165)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:96)
        at com.liferay.portal.kernel.servlet.PortalClassLoaderFilter.doFilter(PortalClassLoaderFilter.java:74)
        at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.processDoFilter(InvokerFilterChain.java:204)