FreeTDS Development Group

["ZIGLIO, Frediano, VF-IT" <Frediano.Ziglio AT vodafone.com>]

> 
> crawford charles wrote:
> > 
> > I believe I have encountered a new (to me anyway)
> > datatype.  The value is 0x7B, and it looks like it
> > could be similar to a INTN (0x26) or FLTN (0x6d) 
> > from its form.
> > 
> > I searched the 3.6 and 3.8 Sybase TD Functional spec,
> > and the FreeTDS 0.64 code base and documentation.  I'd
> > appreciate any help.
> 
> I would be happy to help but am very time-constrained of late.  
> 
> The easiest thing for me would be if you could modify
> src/dblib/unittest/rpc.c to provoke the new datatype from the 
> server.  The
> library should complain and leave enough information in the 
> TDSDUMP log to
> get started.  Then I'll see if the sybase server I have 
> access to behaves
> the same way.  If so, I would think the work to add the new 
> type would be
> quick.  
> 
> And then, you know, we'd have to update the docs.  ;-)
> 
> Regards, 
> 

Mmmm.... some time ago I though about writing a table to specify types
informations like:
- size (if fixed)
- size length (that is varsize, if variable)
- nullable
- if blob
- if collate
- if numeric
- tds version ?? (2 bits, tds5 only and tds7 only are sufficient)
- bitmask of possible sizes possible ??
- ...
It would be fine to put all these infos in a structure or in packing
then in a single integer.
This structure should be used to return information not spreading all
these info in many functions (tds_get_varint_size and similar).

I tried enabling time/date in capability and I discovered that
- if libTDS encounter a not-supported type it try to handle it... very
bad, IMHO should close connection
- TDS_MAX_CAPABILITY is fixed and used for a structure. And now is not
sufficient for store TIME/DATA capability :( This naturally break binary
compatibility with previous version. I start thinking about fully
privatize libTDS like

Index: include/Makefile.am
===================================================================
RCS file: /cvsroot/freetds/freetds/include/Makefile.am,v
retrieving revision 1.32
diff -u -1 -0 -r1.32 Makefile.am
--- include/Makefile.am 21 Dec 2005 14:02:49 -0000      1.32
+++ include/Makefile.am 16 Mar 2007 08:40:38 -0000
@@ -1,30 +1,30 @@
 AUTOMAKE_OPTIONS       =       1.5.3

 include_HEADERS        =       bkpublic.h cspublic.h cstypes.h
ctpublic.h \
                        sqldb.h sqlfront.h \
                        sybdb.h sybfront.h \
-                       syberror.h \
-                       tds.h tdsconvert.h tdssrv.h \
-                       tdsver.h
+                       syberror.h

 nodist_include_HEADERS =       tds_sysdep_public.h

 noinst_HEADERS =       tds_configs.h \
                        tds_sysdep_private.h \
                        md4.h md5.h des.h \
                        replacements.h \
                        tdsstring.h \
                        tdsodbc.h \
                        tdsiconv.h \
                        dblib.h \
                        ctlib.h \
                        tdsthread.h \
                        tdsbytes.h \
-                       replacements/readpassphrase.h
+                       replacements/readpassphrase.h \
+                       tds.h tdsver.h tdsconvert.h \
+                       tdssrv.h

 DISTCLEANFILES =       tds_sysdep_public.h freetds_sysconfdir.h

 freetds_sysconfdir.h: Makefile
        echo '#define FREETDS_SYSCONFDIR "$(sysconfdir)"' >$@

 all-am: freetds_sysconfdir.h
Index: src/tds/Makefile.am
===================================================================
RCS file: /cvsroot/freetds/freetds/src/tds/Makefile.am,v
retrieving revision 1.61
diff -u -1 -0 -r1.61 Makefile.am
--- src/tds/Makefile.am 26 Dec 2006 12:53:02 -0000      1.61
+++ src/tds/Makefile.am 16 Mar 2007 08:40:40 -0000
@@ -5,27 +5,20 @@

 noinst_LTLIBRARIES     =       libtds.la
 libtds_la_SOURCES=     mem.c token.c util.c login.c read.c \
        write.c convert.c numeric.c config.c query.c iconv.c \
        locale.c challenge.c threadsafe.c vstrbuild.c md4.c md5.c \
        des.c tdsstring.c getmac.c data.c net.c \
        tds_checks.c tds_checks.h enum_cap.h log.c
 libtds_la_LDFLAGS=
 libtds_la_LIBADD=

-install-exec-local: libtds.la
-       test -z "$(libdir)" || $(mkdir_p) "$(DESTDIR)$(libdir)"
-       $(LIBTOOL) --mode=install $(INSTALL) $(INSTALL_STRIP_FLAG)
".libs/libtds.a" "$(DESTDIR)$(libdir)/libtds.a"
-
-uninstall-local:
-       $(LIBTOOL) --mode=uninstall rm -f "$(DESTDIR)$(libdir)/libtds.a"
-
 noinst_HEADERS         = tds_willconvert.h encodings.h num_limits.h
 EXTRA_DIST             = tds_willconvert.h encodings.h num_limits.h

 if HAVE_DOXYGEN
 doxyfile: $(srcdir)/tds.dox
        cp $(srcdir)/tds.dox doxyfile

 ## The doxygen configuration file understands environment variables.

 doxy: doxyfile  $(libtds_la_SOURCES)


That is: no library installed, no include installed.

freddy77