On 26-04-12 15:45, Antonio Fortuny wrote:
Le 26/04/2012 14:57, Koenraad Lelong a écrit :
Hi,
I would like to make an application to centrally store documents. I
will put a reference to the location in a Firebird database, so I can
retrieve (and show) the document.
This could lead to very big directories and I don't know any OS who
loves this. This situation generalyy leads to a drastic preformance loose.
I will categorize the files, so they come in several directories.
I will let the user specify the source document, then the application
will copy the document to the central location. So, I wonder if there
is an OS-independent way to copy files.
In fact input and output files depend on how your program access them. I
guess that Win and Linux are mixed. In this case one solution is to use
UNC and SMB sharing system on both sides: Windows folder share and Linux
Samba server.
That's what will be used.
I could do block-read/block-writes, but is this the most efficient way
? Or should I use an os-dependent call of the copy command ? Or
something else ?
Using FPC, it is very easy to manage this with a pair of TFileStream
provided each of them has an appropriate file path depending on the OS.
I'm looking into this. Thanks.
I could store the documents in the database, but I never worked with
blobs so I will try this in a next version.
It is quite easy to use blobs (either binary or text) most of the times.
What components set do you plan to use ?
Lazarus SQLdb works very well in both 32 and 64 bit. Prodigy UIB
components do the same work.
I am using SQLdb, but like I said that will be for the next version. And
I'm considering a similar application retrieving files from CD-rom. I
_think_ a CD-rom based database will be too slow. But I could be wrong.
Thank you very much, that was very helpfull.
Koenraad Lelong.
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