And here: <a href="http://www.linuxnetworks.de/doc/index.php/OpenDBX/C_API/Usage">http://www.linuxnetworks.de/doc/index.php/OpenDBX/C_API/Usage</a><br><br> I can read:<br><br>"<h2> <span class="mw-headline"> Processing results </span></h2>
<p>After fetching a row, all values of this row are available for
further processing, as well as their name, length and type - but the
name and the type of a column won't change. Also the number of columns
returned by <a href="http://www.linuxnetworks.de/doc/index.php/OpenDBX/API/odbx_column_count" title="OpenDBX/API/odbx column count" class="mw-redirect">odbx_column_count</a>() is fixed for the whole result.
</p>
<pre>int i;
for( i = 0; i < odbx_column_count( result ); i++ )
{
fprintf( stdout, "Name: %s\n", odbx_column_name( result, i ) );
fprintf( stdout, "Type: %d\n", odbx_column_type( result, i ) );
fprintf( stdout, "Length: %d\n", odbx_field_length( result, i ) );
fprintf( stdout, "Value: %s\n", odbx_field_value( result, i ) );
}
</pre>
<p><br>
Besides <a href="http://www.linuxnetworks.de/doc/index.php/OpenDBX/API/odbx_column_type" title="OpenDBX/API/odbx column type" class="mw-redirect">odbx_column_type</a>() these functions don't return error codes. Instead, they return zero (<a href="http://www.linuxnetworks.de/doc/index.php/OpenDBX/API/odbx_field_length" title="OpenDBX/API/odbx field length" class="mw-redirect">odbx_field_length</a>()) or NULL (<a href="http://www.linuxnetworks.de/doc/index.php/OpenDBX/API/odbx_column_name" title="OpenDBX/API/odbx column name" class="mw-redirect">odbx_column_name</a>() and <a href="http://www.linuxnetworks.de/doc/index.php/OpenDBX/API/odbx_field_length" title="OpenDBX/API/odbx field length" class="mw-redirect">odbx_field_length</a>()), but you shouldn't check for those because these values are also valid return values.
</p><p>All numbers are returned as strings from the database regardless
if they are integers or floats. If you want to do arithmetic operations,
you have to convert them to their machine dependent binary
representation first.
</p>"<br><br><div class="gmail_quote">On Mon, Aug 15, 2011 at 11:11 PM, Mariano Martinez Peck <span dir="ltr"><<a href="mailto:marianopeck@gmail.com">marianopeck@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<br><br><div class="gmail_quote"><div class="im">On Mon, Aug 15, 2011 at 9:59 PM, Alain Rastoul <span dir="ltr"><<a href="mailto:alr.dev@free.fr" target="_blank">alr.dev@free.fr</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<u></u>
<div bgcolor="#ffffff">
<div><font face="Arial" size="2">Hi,</font></div>
<div><font face="Arial" size="2">I finally found that when called in C with the same
api calls that those made by opendbx, sqlite correctly returns datatype of
columns when fetching rows, the problem is clearly that the data type is stored
in SQueakDBX column description for the resultset the first time it
fetches the first row.</font></div>
<div><font face="Arial" size="2">For sqlite, squeakdbx should call the sqlite api to
retrieve column datatype for each row and each colum while fetching
data.</font></div></div></blockquote></div><div><br>Hi Alain. I am reading this: <a href="http://www.linuxnetworks.de/doc/index.php/OpenDBX/C_API/odbx_column_type" target="_blank">http://www.linuxnetworks.de/doc/index.php/OpenDBX/C_API/odbx_column_type</a><br>
<br>From SqueakDBX, we send odbx_column_type ONCE PER RESULTSET. <br>You can see this in #processNextResultSet:querySettings: that for every resultset it sends #processResultWithRows:resultHandle:querySettings:<br><br>
Now.... should we send odbx_column_type and friends ONCE PER RAW? As far as I can see, in other databases we don't need to do that. But maybe we are wrong and you are right. <br>
Norbert?<br><br>Anyway, if you want to give it a try to Sqlite, what about overwrite #moveNext: in SqlitePlatform and do something to set the new type for every raw. <br><br>From what I can see, if the type depends on each raw and it should be asked for every raw, then a design change is needed so that we can move the description from the REsultSet to the Raw :)<br>
<br><br></div><div class="im"><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex"><div bgcolor="#ffffff">
<div><font face="Arial" size="2">But it may have implications I don't know.
Perhaps squeakDbx could get only true object values (are rawValues really
needed) ?.</font></div></div></blockquote></div><div><br>Well, it depends on the user needs. Now, a key point is what GLORP should use. <br> </div><div class="im"><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
<div bgcolor="#ffffff">
<div><font face="Arial" size="2">Or perhaps another solution would be to call the
sqlite api if the stored datatype is UNKNOWN in column description ... (only for
sqlite, but sounds like a bad trick)</font></div></div></blockquote></div><div><br>sounds like a hask, but if it works it is at least a valid workaround. <br> </div><div><div></div><div class="h5"><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex">
<div bgcolor="#ffffff">
<div><font face="Arial" size="2">I am perplexed ...</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">Any idea is welcome</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">Cheers </font></div>
<div><font face="Arial" size="2">Alain</font></div>
<blockquote style="border-left:#000000 2px solid;padding-left:5px;padding-right:0px;margin-left:5px;margin-right:0px">
<div>"Mariano Martinez Peck" <<a href="mailto:marianopeck@gmail.com" target="_blank">marianopeck@gmail.com</a>>
a écrit dans le message de news: <a href="mailto:CAA+-=mW69g-MP3fQutJ9vVhAjRoP9eZdv5Z0Zkv9junYZeTyKw@mail.gmail.com" target="_blank">CAA+-=mW69g-MP3fQutJ9vVhAjRoP9eZdv5Z0Zkv9junYZeTyKw@mail.gmail.com</a>...</div><br><br>
<div class="gmail_quote"><div>On Sat, Aug 13, 2011 at 12:06 AM, Alain Rastoul <span dir="ltr"><<a href="mailto:alr.dev@free.fr" target="_blank">alr.dev@free.fr</a>></span>
wrote:<br>
</div><blockquote style="border-left:#ccc 1px solid;margin:0px 0px 0px 0.8ex;padding-left:1ex" class="gmail_quote"><u></u>
<div bgcolor="#ffffff"><div>
<div><font face="Arial" size="2">It doen't work.</font></div>
<div><font face="Arial" size="2">Howerver googling for opendbx msg00483, I
found</font></div>
</div><div><div></div><div><div>
<div><a href="http://www.mail-archive.com/libopendbx-devel-5NWGOfrQmnetEtDZOKyKiw@public.gmane.orgrge.net/msg00483.html" target="_blank">http://www.mail-archive.com/libopendbx-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org/msg00483.html</a></div>
</div></div></div></div></blockquote><div><div></div><div>
<div><br>yes, that one :)<br> </div>
<blockquote style="border-left:rgb(204,204,204) 1px solid;margin:0pt 0pt 0pt 0.8ex;padding-left:1ex" class="gmail_quote">
<div bgcolor="#ffffff">
<div></div>
<div><font face="Arial" size="2">it seems to be the problem of the issue 10, and
I think the same problem I have..</font></div></div></blockquote>
<div><br>yes <br>Sorry, I cannot do more.... :(<br> </div>
</div></div><blockquote style="border-left:rgb(204,204,204) 1px solid;margin:0pt 0pt 0pt 0.8ex;padding-left:1ex" class="gmail_quote">
<div bgcolor="#ffffff"><div><div></div><div>
<div><font face="Arial" size="2">Strange that it doesn't work with MSSQL
too..</font></div>
<div><font face="Arial" size="2"></font> </div>
</div></div><blockquote style="border-left:#000000 2px solid;padding-left:5px;padding-right:0px;margin-left:5px;margin-right:0px"><div><div></div><div>
<div>"Mariano Martinez Peck" <<a href="mailto:marianopeck@gmail.com" target="_blank">marianopeck@gmail.com</a>>
a écrit dans le message de news: <a href="mailto:CAA+-=mW4rwrLMhMAzsLhQ5zEWZBG_Jg=BF2dKu3wsxw0=io=iQ@mail.gmail.com" target="_blank">CAA+-=mW4rwrLMhMAzsLhQ5zEWZBG_Jg=BF2dKu3wsxw0=io=iQ@mail.gmail.com</a>...</div>
</div></div><div>
<div></div>
<div><div><div></div><div><br><br>
<div class="gmail_quote">On Fri, Aug 12, 2011 at 11:14 PM, Alain Rastoul
<span dir="ltr"><<a href="mailto:alr.dev@free.fr" target="_blank">alr.dev@free.fr</a>></span>
wrote:<br>
<blockquote style="border-left:#ccc 1px solid;margin:0px 0px 0px 0.8ex;padding-left:1ex" class="gmail_quote"><u></u>
<div bgcolor="#ffffff">
<div><font face="Arial" size="2"><font face="Times New Roman" size="3">I used
the following script (about 2 months ago I think ) in Pharo
1.3<br></font></font></div>
<div><font face="Arial" size="2">"SqueakDBX"<br>Gofer new squeaksource:
'MetacelloRepository';<br>package:
'ConfigurationOfSqueakDBX';<br>load.<br>ConfigurationOfSqueakDBX project
latestVersion load.<br><br>"GLORP"<br>Gofer new squeaksource:
'MetacelloRepository';<br>package:
'ConfigurationOfGlorpDBX';<br>load.<br>ConfigurationOfGlorpDBX project
latestVersion load.<br><br></font></div></div></blockquote>
<div><font face="Arial" size="2"></font><font face="Arial" size="2"></font><br>Yes, you are using SqueakDBX ;) you will move
soon to DBXTalk :)<br> </div>
<blockquote style="border-left:rgb(204,204,204) 1px solid;margin:0pt 0pt 0pt 0.8ex;padding-left:1ex" class="gmail_quote">
<div bgcolor="#ffffff">
<div><font face="Arial" size="2">II use DBXTestCase for my test with
the code I send in my email (i</font><font face="Arial" size="2">s it ok for
you?), but I will have alook at DBXQueryTest too.<br>No problem to put
it in the test suite - it makes me remember that I
still didn't</font> <font face="Arial" size="2">send my license
agreement to Stephane but I will do it asap... I hate papers
;-)</font></div></div></blockquote>
<div><font face="Arial" size="2"></font><font face="Arial" size="2"></font><br>in
our case we don't need that ;)<br> </div>
<blockquote style="border-left:rgb(204,204,204) 1px solid;margin:0pt 0pt 0pt 0.8ex;padding-left:1ex" class="gmail_quote">
<div bgcolor="#ffffff">
<div><font face="Arial" size="2"><a href="http://www.mail-archive.com/libopendbx-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org/msg00483.html" target="_blank"><font face="Times New Roman" size="3">http://www.mail-archive.com/libopendbx-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org/msg00483.html</font></a><br>
The link is
broken</font> <br></div></div></blockquote>
<div><font face="Arial" size="2"></font><font face="Arial" size="2"></font><br><a href="http://www.mail-archive.com/libopendbx-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org/msg00483.html" target="_blank">http://www.mail-archive.com/libopendbx-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org/msg00483.html</a>
<br></div></div><br></div></div><div>this one works?<br><br clear="all"><br>--
<br>Mariano<br><a href="http://marianopeck.wordpress.com" target="_blank">http://marianopeck.wordpress.com</a><br><br></div></div></div></blockquote></div></blockquote></div><div><br><br clear="all"><br>
-- <br>Mariano<br><a href="http://marianopeck.wordpress.com" target="_blank">http://marianopeck.wordpress.com</a><br><br></div></blockquote></div>
</blockquote></div></div></div><div><div></div><div class="h5"><br><br clear="all"><br>-- <br>Mariano<br><a href="http://marianopeck.wordpress.com" target="_blank">http://marianopeck.wordpress.com</a><br><br>
</div></div></blockquote></div><br><br clear="all"><br>-- <br>Mariano<br><a href="http://marianopeck.wordpress.com" target="_blank">http://marianopeck.wordpress.com</a><br><br>