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MemoryStream into Table |
Fri, Oct 26 2007 5:02 PM | Permanent Link |
Aage Johansen | Tim Young [Elevate Software] wrote:
> Aage, > > << There must be something that I miss. What? >> > > Did you verify that the images were saved as JPGs in the database ? If so, > then you should try bumping up the BLOB block size for the table to at least > 1-2k. > I could display the images without problems. The problem was the way I used the MemoryStream. I faintly recall someone on these lists having a similar problem some time ago. As soon as I changed my code the problem went away. Only problem now: the full dataset exceeds the 4GB limit. Maybe the easiest workaround is splitting the data (which it is possible to do in a meaningful way). -- Aage J. |
Mon, Oct 29 2007 4:31 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. timyoung@elevatesoft.com | Aage,
<< I could display the images without problems. The problem was the way I used the MemoryStream. I faintly recall someone on these lists having a similar problem some time ago. As soon as I changed my code the problem went away. >> Hmm, the memory stream size should be accurate, however, I wonder if the memory stream contained the uncompressed bitmap image instead of the compressed jpeg itself. << Only problem now: the full dataset exceeds the 4GB limit. Maybe the easiest workaround is splitting the data (which it is possible to do in a meaningful way). >> Why not just use LargeFileSupport:=True ? http://www.elevatesoft.com/dbisam4d7_enabling_large_file_support.htm -- Tim Young Elevate Software www.elevatesoft.com |
Mon, Oct 29 2007 6:19 PM | Permanent Link |
Aage Johansen | Tim Young [Elevate Software] wrote:
> Aage, > > << Only problem now: the full dataset exceeds the 4GB limit. Maybe the > easiest workaround is splitting the data (which it is possible to do in a > meaningful way). >> > > Why not just use LargeFileSupport:=True ? > > http://www.elevatesoft.com/dbisam4d7_enabling_large_file_support.htm > I just did this an hour or so ago! Haven't tested yet... I thought I would have to do more than this, and the dbisam4b2006.pdf manual was missing this line (Engine.LargeFileSupport:=Truewhich I just found in the dbisam4d6.hlp today. -- Aage J. |
Tue, Oct 30 2007 5:23 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. timyoung@elevatesoft.com | Aage,
<< I thought I would have to do more than this, and the dbisam4b2006.pdf manual was missing this line (Engine.LargeFileSupport:=Truewhich I just found in the dbisam4d6.hlp today. >> I will make sure that this is corrected. -- Tim Young Elevate Software www.elevatesoft.com |
Tue, Oct 30 2007 5:25 PM | Permanent Link |
Tim Young [Elevate Software] Elevate Software, Inc. timyoung@elevatesoft.com | Aage,
<< I thought I would have to do more than this, and the dbisam4b2006.pdf manual was missing this line (Engine.LargeFileSupport:=Truewhich I just found in the dbisam4d6.hlp today. >> Where are you seeing this ? I checked the "Enabling Large File Support " topic and it seems to be okay. -- Tim Young Elevate Software www.elevatesoft.com |
Tue, Oct 30 2007 6:49 PM | Permanent Link |
Aage Johansen | Tim Young [Elevate Software] wrote:
> Aage, > > << I thought I would have to do more than this, and the dbisam4b2006.pdf > manual was missing this line (Engine.LargeFileSupport:=Truewhich I just > found in the dbisam4d6.hlp today. >> > > Where are you seeing this ? I checked the "Enabling Large File Support " > topic and it seems to be okay. > The pdf may already be updated. My version of dbisam4b2006.pdf is dated 21.02.2006 (!!!). Anyway, it is (was?) on page 30 (ch. 2.5). -------------------------------- .... The following example shows how you would enable large file support using the default global Engine function in the dbisamtb unit (Delphi and Kylix) or dbisamtb header file (C++Builder): <THE MISSING LINE SHOULD HAVE BEEN HERE> Note The LargeFileSupport property must be set before the engine is started or an exception will be raised. 2.6 Configuring and Starting the Server .... -------------------------------- -- Aage J. |
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