versioning a file

[shrndegruv]

hey all,

so i can create file

        Node fileNode = parentFolder.addNode(file.getName(), "nt:file");

        // make the file versionable and lockable
        fileNode.addMixin("mix:versionable");

        // create the mandatory child node - jcr:content
        Node resNode = fileNode.addNode("jcr:content", "nt:resource");

I added the middle line to make the file versionable.  but when I try to
getVersionHistory on the file I get an exception


javax.jcr.UnsupportedRepositoryOperationException: Unable to perform
versioning operation on non versionable node: /files/testVersionFile
    at
org.apache.jackrabbit.core.NodeImpl.checkVersionable(NodeImpl.java:3215)


any ideas?  Can I add the mix:versionable type to nt:file?  If not, how does
one version a file?

--
---------------------
Michael Harris

[shrndegruv]

when a  node is versioned, what happens to child nodes?  Are they versioned
to?

If you want to modify a child node, would you checkout the parent or the
child?

So nt:file node has a child node nt:resource.  The content of the file is
stored as a property of that resource.  To version the file, do you checkout
the nt:file or the nt:resource?



On Thu, Jul 24, 2008 at 11:10 AM, Michael Harris <michael.e.harris@...>
wrote:

> hey all,
>
> so i can create file
>
>         Node fileNode = parentFolder.addNode(file.getName(), "nt:file");
>
>         // make the file versionable and lockable
>         fileNode.addMixin("mix:versionable");
>
>         // create the mandatory child node - jcr:content
>         Node resNode = fileNode.addNode("jcr:content", "nt:resource");
>
> I added the middle line to make the file versionable.  but when I try to
> getVersionHistory on the file I get an exception
>
>
> javax.jcr.UnsupportedRepositoryOperationException: Unable to perform
> versioning operation on non versionable node: /files/testVersionFile
>     at
> org.apache.jackrabbit.core.NodeImpl.checkVersionable(NodeImpl.java:3215)
>
>
> any ideas?  Can I add the mix:versionable type to nt:file?  If not, how
> does one version a file?
>
> --
> ---------------------
> Michael Harris
>

--
---------------------
Michael Harris

[Alexander Klimetschek]

Hi!

On Thu, Jul 24, 2008 at 7:35 PM, Michael Harris
<michael.e.harris@...> wrote:
> when a  node is versioned, what happens to child nodes?  Are they versioned
> to?

You can specify the behaviour in the node type definitions - have a
look at section "8.2.11 OnParentVersion Attribute" of the JCR spec.
For a quick overview, see here
http://markmail.org/message/4kfvtze7t7quqayu

> If you want to modify a child node, would you checkout the parent or the
> child?

If you add or remove child nodes, you have to modify the parent. To
change properties, you only modify the node with the properties. The
rest depends on the OnParentVersion attribute.

> So nt:file node has a child node nt:resource.  The content of the file is
> stored as a property of that resource.  To version the file, do you checkout
> the nt:file or the nt:resource?

Good question! Haven't done so my self, but since nt:resource has a
OPV=COPY you can do both. I would tend to make the nt:file a
mix:versionable.

Regards,
Alex

--
Alexander Klimetschek
alexander.klimetschek@...

[shrndegruv]

Alex

thanx -- i asked that a while ago and ended up just trying it -- i version
the file and everything works fine.

I tend to ask a lot of questions I should only ask after trying it
myself....;)

On Mon, Aug 11, 2008 at 12:12 PM, Alexander Klimetschek <aklimets@...>wrote:

> Hi!
>
> On Thu, Jul 24, 2008 at 7:35 PM, Michael Harris
> <michael.e.harris@...> wrote:
> > when a  node is versioned, what happens to child nodes?  Are they
> versioned
> > to?
>
> You can specify the behaviour in the node type definitions - have a
> look at section "8.2.11 OnParentVersion Attribute" of the JCR spec.
> For a quick overview, see here
> http://markmail.org/message/4kfvtze7t7quqayu
>
> > If you want to modify a child node, would you checkout the parent or the
> > child?
>
> If you add or remove child nodes, you have to modify the parent. To
> change properties, you only modify the node with the properties. The
> rest depends on the OnParentVersion attribute.
>
> > So nt:file node has a child node nt:resource.  The content of the file is
> > stored as a property of that resource.  To version the file, do you
> checkout
> > the nt:file or the nt:resource?
>
> Good question! Haven't done so my self, but since nt:resource has a
> OPV=COPY you can do both. I would tend to make the nt:file a
> mix:versionable.
>
> Regards,
> Alex
>
> --
> Alexander Klimetschek
> alexander.klimetschek@...
>

--
---------------------
Michael Harris

[Alexander Klimetschek]

On Mon, Aug 11, 2008 at 7:34 PM, Michael Harris
<michael.e.harris@...> wrote:
> Alex
>
> thanx -- i asked that a while ago and ended up just trying it -- i version
> the file and everything works fine.

I know, I was on vacation and currently digg through all the unread
mails and try to answer the yet-unanswered ones as far as I can.

> I tend to ask a lot of questions I should only ask after trying it
> myself....;)

No problem, some things like OPV are not that obvious :-)

Regards,
Alex

--
Alexander Klimetschek
alexander.klimetschek@...