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Posted to users@jackrabbit.apache.org by abhishek reddy <ab...@gmail.com> on 2009/12/29 08:26:12 UTC
Regarding document versioning
hi every one,
Iam new to jackrabbit....
how to implement "Document versioning" concept . I have to maintain various
documents and version them. If a document is modified, it has to be saved as
a new version, keeping the original document as is. I have to version only
some "x" documents. Is this possible with Jackrabbit? If possible please
guide me how to start?
need help thanks
--
Abhishek
Re: Regarding document versioning
Posted by sunild <su...@coreobjects.com>.
sunild wrote:
> Hi Abhi,
>
> Please refer the api of javax.jcr.Node @
> http://www.day.com/maven/jsr170/javadocs/jcr-1.0/javax/jcr/Item.html
>
> Item is parent Interface of Node.
>
> For your use isNew(), isModified() and isSame(Item item)
>
> Before doing all these operations, remember you need to do
> node.checkout(), since you are working on versionable nodes.
>
> Regards,
> Sunil Dhage
>
>
> abhishek reddy wrote:
>> hi sunild,
>>
>> thanks for the reply.... but my requirement is different
>> iam using subversion plugin with netbeans ........
>> In case of netbeans when a file is modified, its color will be chnaged to
>> blue automatically.........indicating that this file is modified and need to
>> be committed to the repository. Similarly, when a new file is added, the
>> file color is changed to green (which indicates that this file is modified
>> and need to be commited to the repository)...
>>
>> *Here the point to be noticed is, file changes are recognised then and
>> there.........*
>> *
>> I want to implement similar kind of mechanism with jackrabbit, i.e the
>> ability to recognise the files when they are modified or added newly
>> automatically.
>>
>> Is there any EVENT kind of mechanism, i.e when a file is added/modified an
>> event is raised.....
>> *
>>
>>
>>
>>
>> On Thu, Dec 31, 2009 at 12:13 PM, sunild <su...@coreobjects.com>wrote:
>>
>>
>>> Hi Abhi,
>>>
>>> To find the versioned files, sure you need to go through the below
>>> mentioned stuff. But repository.xml will help you much.
>>>
>>> Just read line-by-line repository.xml. You will come to know the exact
>>> location of the files.
>>>
>>> One more thing, it depends on the PersistenceManager being used.
>>>
>>> Look for tags """Versioning""" and """FileSystem""".
>>>
>>>
>>> François Cassistat wrote:
>>>
>>>
>>>> You'll need to read more about the JCR specification (that is the standard
>>>> from JackRabbit). Look for the jsr170-1.0.pdf file in the archive
>>>> downloadable here :
>>>> http://jcp.org/aboutJava/communityprocess/final/jsr170/index.html
>>>>
>>>> And read chapter 4, 6, 7 and 8 (this reads fast, don't worry, just skip
>>>> details when it seems too obvious). Then you'll be a JCR-API expert ;)
>>>>
>>>> All the specification about versionning in JCR here in 8.2.
>>>>
>>>> Good luck,
>>>>
>>>>
>>>> Frank
>>>>
>>>>
>>>> Le 2009-12-29 à 8:35 AM, abhishek reddy a écrit :
>>>>
>>>>
>>>>
>>>>
>>>>> hi,
>>>>>
>>>>> thanks for the link, i have tried its working fine
>>>>>
>>>>> can you tell me where the versioned files will be stored?
>>>>> also tell me is there any way, to find out whether the documents are
>>>>> modified or not and accordingly versioning them...
>>>>>
>>>>> thanks again.
>>>>>
>>>>> On Tue, Dec 29, 2009 at 4:55 PM, sunild <su...@coreobjects.com>
>>>>> wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> Hi,
>>>>>>
>>>>>> Try running one first-hops from the jackrabbit website.
>>>>>> Decide the content repository structure. Then apply mix:versionable
>>>>>> node
>>>>>> type to the nodes, which need to be versioned.
>>>>>>
>>>>>> Try to search through previous postings. You will get all of your
>>>>>> questions answered in the jackrabbit previous postings only.
>>>>>>
>>>>>> BR/
>>>>>> Sunil Dhage.
>>>>>>
>>>>>>
>>>>>> abhishek reddy wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> thanks for the reply........
>>>>>>> I wll just go through them........
>>>>>>> Requirement:
>>>>>>> In a business process, the electronic documents
>>>>>>> (doc,text,excel,pdf,images
>>>>>>> etc) will move from person to person.....and there is a scope that
>>>>>>> contents
>>>>>>> of docs might change from the user to user......so, when these docs are
>>>>>>> modified they have to go as revisions to the next user, keepin the
>>>>>>> original
>>>>>>> doc as is......so, that we have track of changes made to the document.
>>>>>>> can you please help me ragrding this.......how can i make use of
>>>>>>> jackrabbit
>>>>>>> in this case.
>>>>>>>
>>>>>>> Note: I dont want to apply versioning on the entire application, rather
>>>>>>> on
>>>>>>> particular files.......in my case docs included in the business
>>>>>>> process.
>>>>>>>
>>>>>>> On Tue, Dec 29, 2009 at 1:15 PM, Mathieu Baudier <mb...@argeo.org>
>>>>>>> wrote:
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> how to implement "Document versioning" concept . I have to maintain
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>>
>>>>>>>> various
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>> documents and version them. If a document is modified, it has to be
>>>>>>>>> saved
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>> as
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>> a new version, keeping the original document as is. I have to version
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>> only
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>> some "x" documents. Is this possible with Jackrabbit? If possible
>>>>>>>>> please
>>>>>>>>> guide me how to start?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>> This page helped me to get started:
>>>>>>>> http://wiki.apache.org/jackrabbit/ExamplesPage#Versioning_Basics
>>>>>>>>
>>>>>>>> then you apply these concepts to "file" nodes:
>>>>>>>> http://wiki.apache.org/jackrabbit/ExamplesPage#Importing_a_File
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>> --
>>>>> Abhishek
>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
>>
>>
>
Re: Regarding document versioning
Posted by abhishek reddy <ab...@gmail.com>.
hi sunild,
thanks for the reply.... but my requirement is different
iam using subversion plugin with netbeans ........
In case of netbeans when a file is modified, its color will be chnaged to
blue automatically.........indicating that this file is modified and need to
be committed to the repository. Similarly, when a new file is added, the
file color is changed to green (which indicates that this file is modified
and need to be commited to the repository)...
*Here the point to be noticed is, file changes are recognised then and
there.........*
*
I want to implement similar kind of mechanism with jackrabbit, i.e the
ability to recognise the files when they are modified or added newly
automatically.
Is there any EVENT kind of mechanism, i.e when a file is added/modified an
event is raised.....
*
On Thu, Dec 31, 2009 at 12:13 PM, sunild <su...@coreobjects.com>wrote:
> Hi Abhi,
>
> To find the versioned files, sure you need to go through the below
> mentioned stuff. But repository.xml will help you much.
>
> Just read line-by-line repository.xml. You will come to know the exact
> location of the files.
>
> One more thing, it depends on the PersistenceManager being used.
>
> Look for tags """Versioning""" and """FileSystem""".
>
>
> François Cassistat wrote:
>
>> You'll need to read more about the JCR specification (that is the standard
>> from JackRabbit). Look for the jsr170-1.0.pdf file in the archive
>> downloadable here :
>> http://jcp.org/aboutJava/communityprocess/final/jsr170/index.html
>>
>> And read chapter 4, 6, 7 and 8 (this reads fast, don't worry, just skip
>> details when it seems too obvious). Then you'll be a JCR-API expert ;)
>>
>> All the specification about versionning in JCR here in 8.2.
>>
>> Good luck,
>>
>>
>> Frank
>>
>>
>> Le 2009-12-29 à 8:35 AM, abhishek reddy a écrit :
>>
>>
>>
>>> hi,
>>>
>>> thanks for the link, i have tried its working fine
>>>
>>> can you tell me where the versioned files will be stored?
>>> also tell me is there any way, to find out whether the documents are
>>> modified or not and accordingly versioning them...
>>>
>>> thanks again.
>>>
>>> On Tue, Dec 29, 2009 at 4:55 PM, sunild <su...@coreobjects.com>
>>> wrote:
>>>
>>>
>>>
>>>> Hi,
>>>>
>>>> Try running one first-hops from the jackrabbit website.
>>>> Decide the content repository structure. Then apply mix:versionable
>>>> node
>>>> type to the nodes, which need to be versioned.
>>>>
>>>> Try to search through previous postings. You will get all of your
>>>> questions answered in the jackrabbit previous postings only.
>>>>
>>>> BR/
>>>> Sunil Dhage.
>>>>
>>>>
>>>> abhishek reddy wrote:
>>>>
>>>>
>>>>
>>>>> thanks for the reply........
>>>>> I wll just go through them........
>>>>> Requirement:
>>>>> In a business process, the electronic documents
>>>>> (doc,text,excel,pdf,images
>>>>> etc) will move from person to person.....and there is a scope that
>>>>> contents
>>>>> of docs might change from the user to user......so, when these docs are
>>>>> modified they have to go as revisions to the next user, keepin the
>>>>> original
>>>>> doc as is......so, that we have track of changes made to the document.
>>>>> can you please help me ragrding this.......how can i make use of
>>>>> jackrabbit
>>>>> in this case.
>>>>>
>>>>> Note: I dont want to apply versioning on the entire application, rather
>>>>> on
>>>>> particular files.......in my case docs included in the business
>>>>> process.
>>>>>
>>>>> On Tue, Dec 29, 2009 at 1:15 PM, Mathieu Baudier <mb...@argeo.org>
>>>>> wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>> how to implement "Document versioning" concept . I have to maintain
>>>>>>
>>>>>>
>>>>>>>
>>>>>>>
>>>>>> various
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> documents and version them. If a document is modified, it has to be
>>>>>>> saved
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> as
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> a new version, keeping the original document as is. I have to version
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> only
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>> some "x" documents. Is this possible with Jackrabbit? If possible
>>>>>>> please
>>>>>>> guide me how to start?
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>> This page helped me to get started:
>>>>>> http://wiki.apache.org/jackrabbit/ExamplesPage#Versioning_Basics
>>>>>>
>>>>>> then you apply these concepts to "file" nodes:
>>>>>> http://wiki.apache.org/jackrabbit/ExamplesPage#Importing_a_File
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>> --
>>> Abhishek
>>>
>>>
>>
>>
>>
>
>
--
Abhishek
Re: Regarding document versioning
Posted by sunild <su...@coreobjects.com>.
Hi Abhi,
To find the versioned files, sure you need to go through the below
mentioned stuff. But repository.xml will help you much.
Just read line-by-line repository.xml. You will come to know the exact
location of the files.
One more thing, it depends on the PersistenceManager being used.
Look for tags """Versioning""" and """FileSystem""".
François Cassistat wrote:
> You'll need to read more about the JCR specification (that is the standard from JackRabbit). Look for the jsr170-1.0.pdf file in the archive downloadable here :
> http://jcp.org/aboutJava/communityprocess/final/jsr170/index.html
>
> And read chapter 4, 6, 7 and 8 (this reads fast, don't worry, just skip details when it seems too obvious). Then you'll be a JCR-API expert ;)
>
> All the specification about versionning in JCR here in 8.2.
>
> Good luck,
>
>
> Frank
>
>
> Le 2009-12-29 à 8:35 AM, abhishek reddy a écrit :
>
>
>> hi,
>>
>> thanks for the link, i have tried its working fine
>>
>> can you tell me where the versioned files will be stored?
>> also tell me is there any way, to find out whether the documents are
>> modified or not and accordingly versioning them...
>>
>> thanks again.
>>
>> On Tue, Dec 29, 2009 at 4:55 PM, sunild <su...@coreobjects.com> wrote:
>>
>>
>>> Hi,
>>>
>>> Try running one first-hops from the jackrabbit website.
>>> Decide the content repository structure. Then apply mix:versionable node
>>> type to the nodes, which need to be versioned.
>>>
>>> Try to search through previous postings. You will get all of your
>>> questions answered in the jackrabbit previous postings only.
>>>
>>> BR/
>>> Sunil Dhage.
>>>
>>>
>>> abhishek reddy wrote:
>>>
>>>
>>>> thanks for the reply........
>>>> I wll just go through them........
>>>> Requirement:
>>>> In a business process, the electronic documents (doc,text,excel,pdf,images
>>>> etc) will move from person to person.....and there is a scope that
>>>> contents
>>>> of docs might change from the user to user......so, when these docs are
>>>> modified they have to go as revisions to the next user, keepin the
>>>> original
>>>> doc as is......so, that we have track of changes made to the document.
>>>> can you please help me ragrding this.......how can i make use of
>>>> jackrabbit
>>>> in this case.
>>>>
>>>> Note: I dont want to apply versioning on the entire application, rather on
>>>> particular files.......in my case docs included in the business process.
>>>>
>>>> On Tue, Dec 29, 2009 at 1:15 PM, Mathieu Baudier <mb...@argeo.org>
>>>> wrote:
>>>>
>>>>
>>>>
>>>>
>>>>> how to implement "Document versioning" concept . I have to maintain
>>>>>
>>>>>>
>>>>> various
>>>>>
>>>>>
>>>>>
>>>>>> documents and version them. If a document is modified, it has to be
>>>>>> saved
>>>>>>
>>>>>>
>>>>>>
>>>>> as
>>>>>
>>>>>
>>>>>
>>>>>> a new version, keeping the original document as is. I have to version
>>>>>>
>>>>>>
>>>>>>
>>>>> only
>>>>>
>>>>>
>>>>>
>>>>>> some "x" documents. Is this possible with Jackrabbit? If possible please
>>>>>> guide me how to start?
>>>>>>
>>>>>>
>>>>>>
>>>>> This page helped me to get started:
>>>>> http://wiki.apache.org/jackrabbit/ExamplesPage#Versioning_Basics
>>>>>
>>>>> then you apply these concepts to "file" nodes:
>>>>> http://wiki.apache.org/jackrabbit/ExamplesPage#Importing_a_File
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>> --
>> Abhishek
>>
>
>
Re: Regarding document versioning
Posted by François Cassistat <f...@maya-systems.com>.
You'll need to read more about the JCR specification (that is the standard from JackRabbit). Look for the jsr170-1.0.pdf file in the archive downloadable here :
http://jcp.org/aboutJava/communityprocess/final/jsr170/index.html
And read chapter 4, 6, 7 and 8 (this reads fast, don't worry, just skip details when it seems too obvious). Then you'll be a JCR-API expert ;)
All the specification about versionning in JCR here in 8.2.
Good luck,
Frank
Le 2009-12-29 à 8:35 AM, abhishek reddy a écrit :
> hi,
>
> thanks for the link, i have tried its working fine
>
> can you tell me where the versioned files will be stored?
> also tell me is there any way, to find out whether the documents are
> modified or not and accordingly versioning them...
>
> thanks again.
>
> On Tue, Dec 29, 2009 at 4:55 PM, sunild <su...@coreobjects.com> wrote:
>
>> Hi,
>>
>> Try running one first-hops from the jackrabbit website.
>> Decide the content repository structure. Then apply mix:versionable node
>> type to the nodes, which need to be versioned.
>>
>> Try to search through previous postings. You will get all of your
>> questions answered in the jackrabbit previous postings only.
>>
>> BR/
>> Sunil Dhage.
>>
>>
>> abhishek reddy wrote:
>>
>>> thanks for the reply........
>>> I wll just go through them........
>>> Requirement:
>>> In a business process, the electronic documents (doc,text,excel,pdf,images
>>> etc) will move from person to person.....and there is a scope that
>>> contents
>>> of docs might change from the user to user......so, when these docs are
>>> modified they have to go as revisions to the next user, keepin the
>>> original
>>> doc as is......so, that we have track of changes made to the document.
>>> can you please help me ragrding this.......how can i make use of
>>> jackrabbit
>>> in this case.
>>>
>>> Note: I dont want to apply versioning on the entire application, rather on
>>> particular files.......in my case docs included in the business process.
>>>
>>> On Tue, Dec 29, 2009 at 1:15 PM, Mathieu Baudier <mb...@argeo.org>
>>> wrote:
>>>
>>>
>>>
>>>> how to implement "Document versioning" concept . I have to maintain
>>>>>
>>>>>
>>>> various
>>>>
>>>>
>>>>> documents and version them. If a document is modified, it has to be
>>>>> saved
>>>>>
>>>>>
>>>> as
>>>>
>>>>
>>>>> a new version, keeping the original document as is. I have to version
>>>>>
>>>>>
>>>> only
>>>>
>>>>
>>>>> some "x" documents. Is this possible with Jackrabbit? If possible please
>>>>> guide me how to start?
>>>>>
>>>>>
>>>> This page helped me to get started:
>>>> http://wiki.apache.org/jackrabbit/ExamplesPage#Versioning_Basics
>>>>
>>>> then you apply these concepts to "file" nodes:
>>>> http://wiki.apache.org/jackrabbit/ExamplesPage#Importing_a_File
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>>
>>
>>
>
>
> --
> Abhishek
Re: Regarding document versioning
Posted by abhishek reddy <ab...@gmail.com>.
hi,
thanks for the link, i have tried its working fine
can you tell me where the versioned files will be stored?
also tell me is there any way, to find out whether the documents are
modified or not and accordingly versioning them...
thanks again.
On Tue, Dec 29, 2009 at 4:55 PM, sunild <su...@coreobjects.com> wrote:
> Hi,
>
> Try running one first-hops from the jackrabbit website.
> Decide the content repository structure. Then apply mix:versionable node
> type to the nodes, which need to be versioned.
>
> Try to search through previous postings. You will get all of your
> questions answered in the jackrabbit previous postings only.
>
> BR/
> Sunil Dhage.
>
>
> abhishek reddy wrote:
>
>> thanks for the reply........
>> I wll just go through them........
>> Requirement:
>> In a business process, the electronic documents (doc,text,excel,pdf,images
>> etc) will move from person to person.....and there is a scope that
>> contents
>> of docs might change from the user to user......so, when these docs are
>> modified they have to go as revisions to the next user, keepin the
>> original
>> doc as is......so, that we have track of changes made to the document.
>> can you please help me ragrding this.......how can i make use of
>> jackrabbit
>> in this case.
>>
>> Note: I dont want to apply versioning on the entire application, rather on
>> particular files.......in my case docs included in the business process.
>>
>> On Tue, Dec 29, 2009 at 1:15 PM, Mathieu Baudier <mb...@argeo.org>
>> wrote:
>>
>>
>>
>>> how to implement "Document versioning" concept . I have to maintain
>>>>
>>>>
>>> various
>>>
>>>
>>>> documents and version them. If a document is modified, it has to be
>>>> saved
>>>>
>>>>
>>> as
>>>
>>>
>>>> a new version, keeping the original document as is. I have to version
>>>>
>>>>
>>> only
>>>
>>>
>>>> some "x" documents. Is this possible with Jackrabbit? If possible please
>>>> guide me how to start?
>>>>
>>>>
>>> This page helped me to get started:
>>> http://wiki.apache.org/jackrabbit/ExamplesPage#Versioning_Basics
>>>
>>> then you apply these concepts to "file" nodes:
>>> http://wiki.apache.org/jackrabbit/ExamplesPage#Importing_a_File
>>>
>>>
>>>
>>
>>
>>
>>
>>
>
>
--
Abhishek
Re: Regarding document versioning
Posted by sunild <su...@coreobjects.com>.
Hi,
Try running one first-hops from the jackrabbit website.
Decide the content repository structure. Then apply mix:versionable
node type to the nodes, which need to be versioned.
Try to search through previous postings. You will get all of your
questions answered in the jackrabbit previous postings only.
BR/
Sunil Dhage.
abhishek reddy wrote:
> thanks for the reply........
> I wll just go through them........
> Requirement:
> In a business process, the electronic documents (doc,text,excel,pdf,images
> etc) will move from person to person.....and there is a scope that contents
> of docs might change from the user to user......so, when these docs are
> modified they have to go as revisions to the next user, keepin the original
> doc as is......so, that we have track of changes made to the document.
> can you please help me ragrding this.......how can i make use of jackrabbit
> in this case.
>
> Note: I dont want to apply versioning on the entire application, rather on
> particular files.......in my case docs included in the business process.
>
> On Tue, Dec 29, 2009 at 1:15 PM, Mathieu Baudier <mb...@argeo.org> wrote:
>
>
>>> how to implement "Document versioning" concept . I have to maintain
>>>
>> various
>>
>>> documents and version them. If a document is modified, it has to be saved
>>>
>> as
>>
>>> a new version, keeping the original document as is. I have to version
>>>
>> only
>>
>>> some "x" documents. Is this possible with Jackrabbit? If possible please
>>> guide me how to start?
>>>
>> This page helped me to get started:
>> http://wiki.apache.org/jackrabbit/ExamplesPage#Versioning_Basics
>>
>> then you apply these concepts to "file" nodes:
>> http://wiki.apache.org/jackrabbit/ExamplesPage#Importing_a_File
>>
>>
>
>
>
>
Re: Regarding document versioning
Posted by abhishek reddy <ab...@gmail.com>.
thanks for the reply........
I wll just go through them........
Requirement:
In a business process, the electronic documents (doc,text,excel,pdf,images
etc) will move from person to person.....and there is a scope that contents
of docs might change from the user to user......so, when these docs are
modified they have to go as revisions to the next user, keepin the original
doc as is......so, that we have track of changes made to the document.
can you please help me ragrding this.......how can i make use of jackrabbit
in this case.
Note: I dont want to apply versioning on the entire application, rather on
particular files.......in my case docs included in the business process.
On Tue, Dec 29, 2009 at 1:15 PM, Mathieu Baudier <mb...@argeo.org> wrote:
> > how to implement "Document versioning" concept . I have to maintain
> various
> > documents and version them. If a document is modified, it has to be saved
> as
> > a new version, keeping the original document as is. I have to version
> only
> > some "x" documents. Is this possible with Jackrabbit? If possible please
> > guide me how to start?
>
> This page helped me to get started:
> http://wiki.apache.org/jackrabbit/ExamplesPage#Versioning_Basics
>
> then you apply these concepts to "file" nodes:
> http://wiki.apache.org/jackrabbit/ExamplesPage#Importing_a_File
>
--
Abhishek
Re: Regarding document versioning
Posted by Mathieu Baudier <mb...@argeo.org>.
> how to implement "Document versioning" concept . I have to maintain various
> documents and version them. If a document is modified, it has to be saved as
> a new version, keeping the original document as is. I have to version only
> some "x" documents. Is this possible with Jackrabbit? If possible please
> guide me how to start?
This page helped me to get started:
http://wiki.apache.org/jackrabbit/ExamplesPage#Versioning_Basics
then you apply these concepts to "file" nodes:
http://wiki.apache.org/jackrabbit/ExamplesPage#Importing_a_File