Francis, The number you are looking at is the *handle* of the item, and not the sequence ID. However, the handle should not change during a database restore.
In this example, the handle is "10673/4" -- the first number "10673" identifies the repository uniquely. The second number "4" identifies the Item in the repository uniquely. This number should never change during a backup and restore. So, that handle refers to an item in the repository. The item is always accessible via a similar URL (notice the handle on the end) http://demo.dspace.org/xmlui/handle/10673/4 Each of that item's files are accessible under URLs that look like: http://demo.dspace.org/xmlui/bistream/handle/10673/4/[FILENAME] Again, those URLs should not change after a backup and restore. If they are changing, than there must be a problem within your backup and restore process. What steps are you taking to do a backup and restore? I've copied back in the 'dspace-tech' listserv -- please continue to include the list in your messages (as it allows others to help, and can be helpful to others who may have the same issue). - Tim On 8/3/2010 9:13 AM, فرانسيس Franci$ wrote: > hi Tim Donohue > ok i might be mistaken here for a example in ur link the number 4 > changes i thought that was the sequence id > > http://demo.dspace.org/xmlui/bitstream/handle/10673/*4*/test_pdf.pdf > <http://demo.dspace.org/xmlui/bitstream/handle/10673/4/test_pdf.pdf> > same link if i restore it i get something like this > http://demo.dspace.org/xmlui/bitstream/handle/10673/*5*/test_pdf.pdf > <http://demo.dspace.org/xmlui/bitstream/handle/10673/4/test_pdf.pdf> > > notice the change whn i restore the backup > > i need that this number 4 remain constant ie if the file has the number > 4 when i restore again it should have this identifier. > > thanx for replying please help > > On Tue, Aug 3, 2010 at 6:06 PM, Tim Donohue <[email protected] > <mailto:[email protected]>> wrote: > > Francis, > > If you are doing a restore from a database backup, the sequence id > should not change. This sequence id is stored in the database > itself (in the bitstream table) -- so, when you restore the database > that sequence number should be restored. > > It's worth noting that if you upload a new file, or replace an > existing file, the sequence number may change. DSpace does not > guarantee that the sequence number remain "static" or unchanging. > DSpace only guarantees that the Item/Community/Collection handle > (or ID) will remain the same. > > You might also think about using the XMLUI for your project -- it is > not as reliant on sequence IDs as the older JSPUI is. In the > XMLUI, you can leave the sequence ID out of the URL link, and it > will try and find the correct file based on it's name. As an > example on our demo server, these two links are equivalent in the XMLUI: > > > http://demo.dspace.org/xmlui/bitstream/handle/10673/4/test_pdf.pdf?sequence=2 > http://demo.dspace.org/xmlui/bitstream/handle/10673/4/test_pdf.pdf > > Notice the first one includes the sequence number, and the second > does not. For the second link, the XMLUI tries to find the first > file named "test_pdf.pdf" that belongs to the Item identified by > "10673/4" -- as long as two files don't have the same name in that > item, the sequence ID is not needed. > > I hope that helps. > > - Tim > > On 8/2/2010 11:42 PM, فرانسيس Franci$ wrote: > > hi > i am doing the project wher in i upload pdf files each pdf has a > link to > open another pdf from the repository,sort of external linking, the > problem is when i take the backup of postgresql and assetstore and > restore it on another machine then when i click on the external > link in > one pdf it says invalid identifier , so i manually checked the > link of > the file the file exist but the sequence id changed so thats y > it says > invalid identifier. can you let me know how i can have static > links for > each pdf, even if i migrate teh database and assetstore i must > have the > same link. > > Regards > Francis > > > > > -- > Regards > > Francis Fernandes > A smile is a curve that sets everything straight.....................so > Keep Smiling ------------------------------------------------------------------------------ The Palm PDK Hot Apps Program offers developers who use the Plug-In Development Kit to bring their C/C++ apps to Palm for a share of $1 Million in cash or HP Products. Visit us here for more details: http://p.sf.net/sfu/dev2dev-palm _______________________________________________ DSpace-tech mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dspace-tech
