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Posted to users@jackrabbit.apache.org by Sunil Dhage <su...@coreobjects.com> on 2009/10/13 09:05:46 UTC

problem in retrieving versions containing images

Hi,

I am working on an application which should hold multiple versions of images.
While retrieving those versions I am getting all the properties but the image,what I am getting is the latest image what is stored.

I have added img1.png ,
Then I have updated it to img2.png, img3.png, img4.png.

All are of different resolutions and sizes.

When trying to retrieve the versions, I could get all four versions of images, but all contain img4.png only.

I tried printing the no of bytes of each version's inputStream, I am getting the actual sizes.

       VersionHistory versionHistory = photocontent.getVersionHistory();
        VersionIterator versionIter = versionHistory.getAllVersions();
        versionIter.skip(1);

        InputStream imageDataStream = null;
        String imageMimeType = null;
        while (versionIter.hasNext()) {

            Version version = versionIter.nextVersion();
            log.info("version "+version.getUUID());
            log.info("version created time "+version.getCreated().getTime());
            NodeIterator nodeIter = version.getNodes();
            while(nodeIter.hasNext()) {
                 Node versionedNode = nodeIter.nextNode();
                //Node versionedNode = version.getNode(JcrConstants.JCR_FROZENNODE);
                imageDataStream =  versionedNode.getProperty(JcrConstants.JCR_DATA).getStream();
                imageMimeType = versionedNode.getProperty(JcrConstants.JCR_MIMETYPE).getString();
                if (imageDataStream != null && imageMimeType != null) {
                    log.info("no of bytes "+imageDataStream.available());
                    DataSource source = new ByteArrayDataSource(imageDataStream, imageMimeType);
                   candidateContent.setContent(new DataHandler(source));

Can you please help me in resolving this issue

Regards,
Sunil Kumar Dhage
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
-No one will manufacture lock without key. Similarly God wont give problems without solutions. So defeat your problems with great confidence.

RE: problem in retrieving versions containing images

Posted by Sunil Dhage <su...@coreobjects.com>.
Alex,
Thanks for your reply.

Actually I was using the same object to set the datahandler.
Hence all the images were containing the last added photo.

It got resolved.

/Sunil

-----Original Message-----
From: Alexander Klimetschek [mailto:aklimets@day.com]
Sent: Tuesday, October 13, 2009 1:38 PM
To: users@jackrabbit.apache.org
Subject: Re: problem in retrieving versions containing images

On Tue, Oct 13, 2009 at 09:05, Sunil Dhage <su...@coreobjects.com> wrote:
> I am working on an application which should hold multiple versions of images.
> While retrieving those versions I am getting all the properties but the image,what I am getting is the latest image what is stored.
>
> I have added img1.png ,
> Then I have updated it to img2.png, img3.png, img4.png.
>
> All are of different resolutions and sizes.
>
> When trying to retrieve the versions, I could get all four versions of images, but all contain img4.png only.

How does your content look like? Where do you set the mix:versionable?
I also wonder why you commented out the line that accesses the
jcr:frozenNode child of the versions - this should be required, as
this child node of nt:version holds the actual content.

Regards,
Alex

--
Alexander Klimetschek
alexander.klimetschek@day.com

Re: problem in retrieving versions containing images

Posted by Alexander Klimetschek <ak...@day.com>.
On Tue, Oct 13, 2009 at 09:05, Sunil Dhage <su...@coreobjects.com> wrote:
> I am working on an application which should hold multiple versions of images.
> While retrieving those versions I am getting all the properties but the image,what I am getting is the latest image what is stored.
>
> I have added img1.png ,
> Then I have updated it to img2.png, img3.png, img4.png.
>
> All are of different resolutions and sizes.
>
> When trying to retrieve the versions, I could get all four versions of images, but all contain img4.png only.

How does your content look like? Where do you set the mix:versionable?
I also wonder why you commented out the line that accesses the
jcr:frozenNode child of the versions - this should be required, as
this child node of nt:version holds the actual content.

Regards,
Alex

-- 
Alexander Klimetschek
alexander.klimetschek@day.com