$Id: CHANGES,v 1.81 2008/08/31 12:08:17 mpeppler Exp $
Release 1.09
Behavior change: A new connection level attribute (syb_disconnect_in_child)
has been added to allow automatical handling of InactiveDestroy across
forks. By default in 1.09 a connection will NOT get closed if the process
ID of the process that is exiting is not the same as the PID of the
process that created the connection.
Detect ASE error 5702 (The server is terminating this process) as a fatal
error for the connection.
Bug Fixes
645 - Spurious COMMIT calls sent to the dataserver during the login/connect calls.
628 - Increase size of Kerberos Principal string buffer
627 - Spurious sigset_t declaration.
Release 1.08
Detect missing libblk.a library, and disable the BLK api calls
if necessary.
Added code to force dlopen() to use RTLD_GLOBAL.
Corrected ct_option() functionality detection.
Fixed incorrect handling of bind_params() (Thanks to Tim Bunce).
Added serverType DSN parameter.
Added tds_keepalive DSN parameter.
Fixed incorrect handling of multiple result sets with DBI
1.53 and later.
Re-wrote $dbh->ping() in C, it's now four times faster.
Allow automated build without prompts.
Improved nsql().
Added corrected handling of DATE and TIME values (ASE 12.5.2 and later).
Added handling of UNSIGNED INT and BIGINT (ASE 15 and later).
Added PERL_NO_GET_CONTEXT #define.
Bug Fixes
624 - Empty strings incorrectly passed as NULL.
616 - Spurious error message when the login request times out.
614 - Documentation improvement for syb_xxx methods.
610 - Segfault when using signals with the threaded libraries and
perl >= 5.8.
Release 1.07
Changed the t/xblk.t test to lookup the charset used by the
server and specify this in the connect() string. This should
avoid failures when the client and server uses charsets of
different sizes (utf8 vs. iso_1, for example).
Better error reporting when the connection data is incorrect
for the test scripts.
Modified $dbh->ping() slightly.
Bug Fixes
604 - Add missing mode parameter to mkdir in t/xblob.t
606 - Memory leak in the BLK API.
Release 1.06
Fix off-by-one error for ISO date format.
Clear error/warning when connecting to a Replication Server.
Fix AutoCommit "off" behavior when CHAINED mode is turned off.
Fix $dbh->begin_work() behavior.
Note: This version fails 4 tests in t/xblk.t when building
against the 15.0 Beta OCS libraries.
Bug Fixes
582 - ISO date formatting off by one for months.
591 - NUM_OF_PARAMS isn't handled properly
593 - Connection can become unusable due a bug in
get_server_version().
597 - Prepared stored procs with placeholders return
corrupted recordset on second fetch.
599 - The call to "prepare" also executes the statement.
600 - $sth->finish sometimes fails to properly clean up the
handle.
Release 1.05
BEHAVIOR CHANGE - $dbh->{LongReadLen} must now be called
before $dbh->prepare(). Previously you could call this after
the $dbh->prepare() but before the $sth->execute().
Install private statement handle methods for TEXT/IMAGE handling
to avoid $h->func() calls, and update documentation.
Implement experimental BLK API via prepare/execute loop.
Change default "AutoCommit" off mode from explicit transactions
to using the "chained" mode if it is available.
Add $sth->syb_describe() call, taken from Sybase::CTlib's
ct_describe().
Add ISO8601 date/time format for output.
Fix $sth->finish() behavior when syb_flush_finish is turned on.
Changed do { } while($sth->{syb_more_results}); idiom to use
redo instead.
Better/more consistent handling of multiple sth on a single dbh,
and new test file.
Bugs Fixed:
580 - Binding binary/varbinary values to placeholders sometimes
fails.
575 - Fails three tests under Tru-64.
577 - perl Makefile.PL fails if umask is 0.
578 - Better warning for calling $dbh->{LongReadLen} if $dbh is busy.
572 - Minor documentation update for bind_param().
Release 1.04
Bugs Fixed:
566 - $sth->{NAME} fails right after prepare().
Release 1.03
Added linking of threaded Sybase libs if perl is built with
threading turned on.
Added CLONE() method.
Minor changes to dbdimp.c to be thread-safe.
Added t/thread.t test script.
Changes to Makefile.PL to make configuration easier.
Add support for Kerberos-based network login.
Handle new library names (libsybct vs. libct).
Make sure that cached statement handle attributes (NAME_lc, etc)
are cleared when multiple result sets are processed.
Add host and port connection properties, to allow connections
to ASE servers that are not defined in the interfaces file
(requires OCS 12.5.1)
Add ability to dynamically increase the maximum number of
connections (thanks to Ed Avis).
Add ability to ignore stored proc return status in nsql() (thanks
to Merijn Broeren)
Fix Makefile.PL umask() issue on Win32 (thanks to Darin Delegal).
Bugs Fixed:
541 - $sth->{NAME} fails right after prepare().
551 - Tests fail when using perl 5.6.1.
556 - Add support for user-supplied SSL certificate file.
557 - type_info_all broken with ASE 11.0.x
562 - syb_flush_finish doesn't work during the connect() phase.
563 - Memory leak when syb_binary_images is set.
Release 1.02
Added syb_server_version attribute. This is filled in at connect()
time with the numeric version number (11.0.3.3, 12.5.1, etc) of the
server that you are connected to.
Bugs Fixed:
520 - t/exec.t fails on Win32.
533 - logic error in deadlock retry in nsql().
532 - t/xblob.t test provides false positive for win32.
534 - Placeholder prepare() fails with ASE 11.0.x
Release 1.01
Automatically finish() statement handles if they are re-executed
before all the rows have been fetched.
Added support for new tables() syntax, thanks to Stephen Wilcoxon.
Added support for DATE and TIME datatypes (available in the
ASE 12.5.1 release, currently undergoing beta testing).
Allow user to specify a database to use for the tests instead of
using "tempdb" (useful if user does not have SA privileges).
Bugs Fixed:
517 - getpwnam() isn't portable.
493 - Second execute on a prepared handle fails.
487 - Add connection information to error messages.
407 - Second+ statement does not use db from "use database".
Release 1.00
Added data_sources().
Allow "SQL_BINARY" placeholder parameters to be passed either
as a hex string (with or without leading 0x), or as raw binary
data.
Bugs Fixed:
477 - segfault when servermsg_cb is called with a null connection
480 - Makefile.PL searches system dirs before PERL5LIB dirs when
looking for DBI installation.
485 - Incorrect handling of large varbinary columns on fetches.
489 - (same as 497, see below).
492 - Can't compile on Win2k.
494 - Do not try to use the ocs.cfg file if it exists.
495 - Incorrect handling of parameters when using placeholders &
stored procs.
497 - implicit type conversions with prepared statements often fail
503 - Binary placeholders with stored procedures.
506 - Default scriptName/hostname connect() params.
508 - DBD::Sybase doesn't build under Win2k.
Release 0.95
Support for building DBD::Sybase in 64 bit mode with the
64 bit version of OpenClient on Solaris, HP-UX, AIX, etc.
(note that perl itself must also be built in 64 bit
mode for this to work!)
Added column_info() method.
Added G_EVAL flag to syb_err_handler calls.
Improved syb_err_handler handling (thanks to Matthew Persico)
Fixed memory leak when opening additional connections for multiple
statement handles on a single database handle (thanks to Stefan
Harbeck)
Applied minor patch by Alex Fridman to get to build on WinNT.
Force a ct_cancel() if, due to syb_do_proc_status, we force a
failure on a request that could have more results pending (Blaise
Lepeuple)
Added syb_cancel_request_on_error attribute (see bug 471).
Warning - the default value for this attribute changes the behavior
of $sth->execute() when there is a failure that is detected in
multi-statement requests.
Added syb_bind_empty_string_as_null attribute (see bug 446) to
allow user configurable empty string binding semantics (convert
to single space [default] or to NULL).
Bugs Fixed:
431 - fetchrow_hashref() has incorrect keys when retrieving
multiple result sets.
437 - imp_sth->numRows in st_next_result not always set.
444 - Incorrect example for ct_get_data(). ct_get_data() SEGV
if passed a non-reference for $image.
394 - $sth->{CursorName} fails hard.
449 - ct_get_data() limited to 32k
450 - Fix incorrect NULLABLE handling.
452 - Incorrect $sth->finish() handling in syb_flush_finish mode
(thanks to Steve Willer).
443 - $sth->fetch produces error if called after $sth->execute on
statement that doesn't return any rows.
411 - statement handle attributes do not change between result sets.
430 - $dbh->prepare can return undef without triggering RaiseError.
436 - Problems with make test generating errors creating
Makefile.aperl.
441 - amadmin who,sqm fails while in a transaction.
446 - Empty string converts to a space (fixed by making this
configurable).
448 - define strncasecmp as strnicmp for Win32 systems.
454 - syb_err_handler won't catch connect-time error.
456 - ping still fails if connection is dead.
461 - Memory leak if NOT using placeholders in selects and
calling execute() multiple times.
464 - Binding an empty string for a date field causes "1/1/1900"
to be inserted (instead of NULL).
469 - nsql error handling bug.
447 - syb_db_disconnect(): ct_con_drop() failed.
471 - Certain class of errors isn't detected by DBD::Sybase.
Documentation changes to explain why
... WHERE (product_code = ? OR (? IS NULL AND product_code IS NULL))
doesn't work with Sybase.
Release 0.94
Added optional SQL buffer argument to syb_err_handler.
Interactive setting of user/server/pwd entries in PWD
for "make test".
Add syb_failed_db_fatal and syb_no_child_con attributes.
Bugs Fixed:
408 - Add the YYYYMMDD format to _date_fmt().
414 - Binding '' is interpreted as NULL.
415 - Fix buffer overlow in syb_db_login().
418 - Fix incorrect handing of CS_CANCELED return code in
st_next_result().
421 - ActiveState patches.
Release 0.93
Added password encryption option to connect() request (contributed
by Tin Martone)
Added initial nsql().
Added ct_get_data(), ct_send_data() and friends func().
Added ?-style placeholder support for exec proc statements.
Changed getExtraLibs() in Makefile.PL to *not* link with -linsck
or -ltli (this avoids problems if the $SYBASE/config/libtcl.cfg
file has been set to load the threaded version of these
libraries.)
Added support for primary_key_info().
(release 0.92 was never publicly released for various reasons)
Bugs Fixed:
366 ping() fails if connection has been marked dead
364 t/fail.t bug.
Release 0.91
Removed artificial 1024 byte limit on char/varchar datatypes in
result sets.
Bug Fixes:
213: BLOBs are returned in HEX, not binary.
Release 0.90
Release number sequence change: I'm dropping the "alpha" qualifier
and I expect to release 1.00 fairly soon.
Small Makefile.PL fix for Sybase 12.0 installation directory
changes.
Applied patch from Tim Ayers to allow 0x type formatting for
binary data fetches (similar to what Sybase::CTlib and
Sybase::DBlib allow).
Fixed some t/ scripts to not fail when run against MS-SQL.
Corrected the handling of timeout events in the client
callback.
Bug Fixes:
349: CS_NUMERIC bindings for ?-style placeholders fails for large
values.
345: Dynamic statement ids get re-used.
351: prepared statements with placeholders cause handle to become
unusable if *first* execute fails.
352: ping() doesn't work right in Apache::DBI (thanks to
Kiriakos Georgiou)
353: syb_quoted_identifier doesn't work.
354: Calling fetch() after prepare() but no execute() fails with
internal DBI error. This should also fix bug # 278 and 288.
297: type_info() returns incorrect or no data.
344: timeout doesn't work correctly.
Release 0.23
Bug Fixes:
331: ? marks in comments are parsed as placeholders.
343: Errors in stored procs cause data rows from proc to be
thrown away.
255: $dbh->execute does not fail it executing proc without
permissions.
Release 0.22
Bug Fixes:
271: execute() does not restart a transaction after a rollback
or commit when running multiple execute() calls for the
same statement handle.
294: SEGV on executing a prepared statement with undef values.
295: SEGV due to printf w/ null pointer
299: Missing dTHR in syb_st_prepare().
Release 0.21
Added constant() function, so that if DBD::Sybase is use'd you
can access some CS_xxx_RESULT constants.
Added $sth->func('syb_output_params') to allow for easier
retrieval of stored proc OUTPUT parameters.
Added syb_do_proc_status database attribute to allow $sth->execute
to handle stored procedure return status directly, and to fail if
the stored proc has a non-0 return status. This should also fix
bug 255.
Errors with severity 10 or below are not stored in $DBI::err
anymore. Use $dbh->{syb_err_handler} to get at those warning
messages.
Added t/fail.t test script to better test failure modes.
Setting AutoCommit on a $dbh with active statement handles is now
a fatal error.
Bug Fixes:
255: Memory leak for prepared statements that are not executed.
264: make test fails when building DBD::Sybase against
OpenClient 10.x.
266: make test fails when building DBD::Sybase with perl 5.004_04
or earlier.
268: $sth->execute(x,y,z) (ie executing a prepare'd statment that
has ?-style placeholders) does not return undef if a
constraint violation occurs on the insert/update/delete.
Release 0.20
Fix code to allow prepare, execute, execute, execute... on
statements that don't include ?-style placeholders.
Fix LENGTH/PRECISION/SCALE $sth attributes to be closer to the
DBI spec.
Fix core dump problem when binding undef values and having
trace >= 2.
Add syb_quoted_identifier connection/database handle attribute.
Add syb_oc_version read-only database handle attribute, returns the
Sybase library version that this binary is currently using.
Added the syb_rowcount $dbh attribute.
Added $sth->cancel().
Call the syb_err_handler (if one is defined) for client-side
errors.
Release 0.19
Setting chained/non-chained mode was still broken. <sigh>
syb_flush_finish mode didn't quite work right either.
Added more verbose traces.
Release 0.18
Add $h->{syb_chained_txn} attribute to switch between CHAINED
transactions and explicit named transactions for AutoCommit=0
mode. The default is for syb_chained_txn to be off (ie 0.13 behaviour).
Fixed typo in syb_db_commit() to actually commit instead of doing
a rollback.
Added an autocommit.t test (which still needs some work).
Disable opening new connection for secondary $sth handles off of a
single $dbh handle when AutoCommit == 0.
Release 0.17
Fix AutoCommit = 0 problems introduced with 0.15 for MS-SQL or older
Sybase server (ie TDS 4.x protocol connections).
Add syb_dynamic_supported $dbh attribute to check whether the
connection supports ?-style placeholders.
Release 0.16
Added code to define PL_xxx symbols for pre 5.005 perls.
New syb_flush_finish attribute (contributed by Steve Miller).
Patch to Makefile.PL for VMS systems.
Better library detection code in Makefile.PL.
Release 0.15
Added an error handler callback which can intercept error messages
and provide ad-hoc handling of error situations.
In AutoCommit == 0 mode, use CS_OPT_CHAINXACTS mode on the
server instead of issuing explicit transactions.
$dbh->LongReadLen and LongTruncOK now work.
First cut at the type_info() and type_info_all() methods.
perl Makefile.PL now attempts to discover the libraries directly
based on what it finds in $SYBASE/lib.
Release 0.14
Added a 'timeout' connection attribute (contributed by Tom May)
to handle timeout errors during normal processing.
SQL PRINT statements are now handled by a warn() call (instead
a printf() call) so that they can be caught by a __WARN__ handler.
Make sure $dbh->do() returns immediately when an error is encountered.
Include dbd-sybase.pod (Tim Bunce's Driver Summary for DBD::Sybase).
Release 0.13
Bug fix release - binding undef (NULL) variables when using
? style placeholders didn't work.
Incorrect login didn't get flagged properly (this bug was
introduced in 0.11.)
Added database attribute to the connect() call.
Release 0.12
Bug fix release - recent versions of DBI make an array that
DBD::Sybase uses read-only, causing errors when multiple
result sets are retrieved where the second result set is wider
(has more columns) than the first one.
Release 0.11
Adds support for multiple $sth for a single $dbh (this is done
by openeing a new connection in prepare() if the previously
prepared statement is still active.
Add support for date formatting via $dbh->func($fmt,
'_date_fmt').
Added two new connect attributes: scriptName and
hostname. Setting these can help identify processes in the
Sybase sysprocesses table.
Release 0.10
Fixes stupid Makefile.PL bug.
Fixes incorrect freeing of memory when mixing prepare()
statements with ? placeholders and prepare() statements
without them.
Release 0.09
Features:
Added $sth->{syb_result_type} which returns the numerical
value of the current result set. The values are defined
in $SYBASE/include/cspublic.h.
Made $sth->{TYPE} compatible with generic DBI values, and
added $sth->{syb_types} to get the native Sybase types.
Added $dbh->tables and $dbh->table_info.
Finally got rid of the "Use of uninitialized value" message
in connect() (thanks to Tom May for this)
Fixed at least some of the memory leaks (thanks to Bryan Mawhinney)
Added Sybase specific do() sub that will handle multiple result
sets.
Added $dbh->{syb_show_sql} and $dbh->{syb_show_eed} to add more
control to error reporting.
Implemented $dbh->ping() method (first cut - may need improvement!)
Bug Fixes:
244: fetch gets infinite loop on sproc error
246: extended error messages go to STDOUT.
Release 0.08
Features:
Added ? placeholder processing. This is done by calling ct_dynamic()
and friends if the statement being executed includes ? type
placeholders.
Bug Fixes:
210: print statements are lost
231: error messages are lost
238: reformat error messages
241: remove the necessity for users to call $sth->finish
Release 0.07
Bug fixes:
204: One form of DBI->connect() fails when specifying the server name.
211: $dbh->do("use database") fails with RaiseError is true.
230: fetch() does not return correct results for certain stored
procs situations.
Release 0.06
Added ability to specify interfaces file in the connect()
call.
Added eg/dbschema.pl (ported from Sybase::DBlib).
Fixed incorrect handling of AutoCommit and PrintError
attributes to connect().
Bugs fixed:
203: Executing sp_helprotect fails.
Release 0.05
Added explicit assignement of LDDLFLAGS and LDFLAGS in
Makefile.PL to make sure that -L$SYBASE/lib comes first
in the list of -L flags.
Added documentation.
Added ability to specify character set, language, packet size
in the connect() call.
Small Win32 portability patch to Makefile.PL from Matt Herbert.
Bugs fixed:
198: connect failure does not return undef
199: DBD::Sybase interaction with Apache::DBI 0.74
Release 0.04
Fixed counting of active statement handles.
Add implicit rollback of open transactions on disconnect.
Add implicit commit when changing AutoCommit from off to on.
Release 0.03
First ALPHA release of native DBD::Sybase implementation.
Release 0.02
Some fixes to the emulation layer.
Release 0.01
Proof of concept release - built as an emulation layer on top
of Sybase::CTlib (part of sybperl 2.x).