postmodern-devel

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252 discussions

[postmodern-devel] Release 1.10
by Marijn Haverbeke 19 Mar '08

19 Mar '08

Hello list, After a lot of bad noise about incompatible changes and a spectacular new DAO system, I now present to you version 1.10 of postmodern. Please take a look -- And do not be afraid to port your code: one large system has already been ported with very little pain. Changes in the interface have turned out to be rather minor. The one subtle point that might bite you is the the way DAO objects are now initialized and saved, so you might want to closely read that part of the documentation. The good news is that the new way things work makes a lot more sense, and is less prone to break down for strange tables and exceptional situations. (Feedback is still appreciated, of course.) Regards, Marijn

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[postmodern-devel] Unbound slots on nullable values?
by Mikko Ahonen 18 Mar '08

18 Mar '08

Hello, I am new to the list, so please forgive me if this is a stupid user error. Am I doing something wrong or is there a bug in how postmodern handles non-null fields? Even very simple dao reports that slot is unbound although according table-description value may be NULL. This is the message I get: The slot TRX is unbound in the object #<KOE {11BA1751}>. I run - Postgres 8.3 - OS X Leopard 10.5.2 - SBCL 1.0.7 - I installed latest postmodern today. I attached output below. Best regards, Mikko Ahonen -- (asdf:oos 'asdf:load-op :postmodern) (use-package :postmodern) ; loading system definition from ; /usr/local/lib/sbcl/site-systems/postmodern.asd into #<PACKAGE "ASDF0"> ; registering #<SYSTEM :POSTMODERN {11E033B9}> as POSTMODERN ; registering #<SYSTEM :POSTMODERN-TESTS {11F4BC91}> as POSTMODERN-TESTS ; loading system definition from ; /usr/local/lib/sbcl/site-systems/bordeaux-threads.asd into #<PACKAGE "ASDF0"> ; registering #<SYSTEM BORDEAUX-THREADS {120D0031}> as BORDEAUX-THREADS ; registering #<SYSTEM BORDEAUX-THREADS-TEST {11636C29}> as ; BORDEAUX-THREADS-TEST ; loading system definition from /usr/local/lib/sbcl/site-systems/s-sql.asd ; into #<PACKAGE "ASDF0"> ; registering #<SYSTEM :S-SQL {117B6C01}> as S-SQL ; loading system definition from ; /usr/local/lib/sbcl/site-systems/simple-date.asd into #<PACKAGE "ASDF0"> ; registering #<SYSTEM :SIMPLE-DATE {1191A041}> as SIMPLE-DATE ; registering #<SYSTEM :SIMPLE-DATE-TESTS {11A4BFB1}> as SIMPLE-DATE-TESTS ; loading system definition from ; /usr/local/lib/sbcl/site-systems/cl-postgres.asd into #<PACKAGE "ASDF0"> ; registering #<SYSTEM :CL-POSTGRES {11BDA379}> as CL-POSTGRES ; registering #<SYSTEM :CL-POSTGRES-TESTS {11D181D1}> as CL-POSTGRES-TESTS ; loading system definition from ; /usr/local/lib/sbcl/site-systems/trivial-utf-8.asd into #<PACKAGE "ASDF0"> ; registering #<SYSTEM :TRIVIAL-UTF-8 {11E8E3A1}> as TRIVIAL-UTF-8 ; registering #<SYSTEM :TRIVIAL-UTF-8-TESTS {11FCC3B1}> as TRIVIAL-UTF-8-TESTS ; loading system definition from ; /usr/local/lib/sbcl/site-systems/ieee-floats.asd into #<PACKAGE "ASDF0"> ; registering #<SYSTEM :IEEE-FLOATS {1214B319}> as IEEE-FLOATS ; registering #<SYSTEM :IEEE-FLOATS-TESTS {122CFC91}> as IEEE-FLOATS-TESTS ; loading system definition from /usr/local/lib/sbcl/site-systems/usocket.asd ; into #<PACKAGE "ASDF0"> ; registering #<SYSTEM USOCKET {11783E61}> as USOCKET ; loading system definition from ; /usr/local/lib/sbcl/site-systems/split-sequence.asd into #<PACKAGE "ASDF0"> ; registering #<SYSTEM :SPLIT-SEQUENCE {11938B69}> as SPLIT-SEQUENCE ; loading system definition from /usr/local/lib/sbcl/site-systems/md5.asd into ; #<PACKAGE "ASDF0"> ; registering #<SYSTEM MD5 {11ABD991}> as MD5 WARNING: Either there is no Bordeaux-threads support for your implementation, or your implementation does not support threads therefore some features may not work. Feel free to implement it, or bug one of the maintainers to do so if your lisp supports threads at all. STYLE-WARNING: implicitly creating new generic function SOCKET-ACCEPT NIL * T (defparameter *db* "foobar") *DB* (defparameter *db-user* "mikko") *DB-USER* (defparameter *db-pwd* "") *DB-PWD* (defparameter *db-host* "localhost") *DB-HOST* * (connect-toplevel *db* *db-user* *db-pwd* *db-host*) (deftable koe () ((data-id :type integer :initarg :data-id :accessor data-id) (ver :type (or integer db-null) :initarg :ver :accessor ver) (trx :type (or integer db-null) :initarg :trx :accessor trx)) (:class-name koe) (:indices data-id)) * (drop-table 'koe) NIL * (create-table 'koe) WARNING: Postgres warning: CREATE TABLE / PRIMARY KEY will create implicit index "koe_pkey" for table "koe" NIL * (make-instance 'koe :data-id 1 :ver 3) #<KOE {11B3EB71}> * (table-description 'koe) (("data_id" "int4" NIL) ("ver" "int4" T) ("trx" "int4" T)) * (make-instance 'koe :data-id 1 :ver 3) #<KOE {11BA1751}> * (save-dao *) debugger invoked on a UNBOUND-SLOT: The slot TRX is unbound in the object #<KOE {11BA1751}>. Type HELP for debugger help, or (SB-EXT:QUIT) to exit from SBCL. restarts (invokable by number or by possibly-abbreviated name): 0: [USE-VALUE ] Return a value as the slot-value. 1: [STORE-VALUE] Store and return a value as the slot-value. 2: [ABORT ] Exit debugger, returning to top level. ((SB-PCL::FAST-METHOD SLOT-UNBOUND (T T T)) #<unavailable argument> #<unavailable argument> #<unavailable argument> #<KOE {11BA1751}> TRX) 0] 2

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[postmodern-devel] postmodern integration
by Attila Lendvai 16 Mar '08

16 Mar '08

dear lists, i've pushed changes into our local-time branch that contains an asdf-system-connection to cl-postgres: darcs pull http://www.common-lisp.net/project/cl-dwim/darcs/local-time Daniel, if you don't mind the extra dependency then please push it into the official. now it's possible to use postmodern so that it returns local-time values and at the same time does not interfere with other softwares that use its simple-date lib. the approach is similar to cl's readtables: (defparameter *custom-sql-readtable* (local-time:set-local-time-cl-postgres-readers (cl-postgres:copy-sql-readtable))) (let ((cl-postgres:*sql-readtable* *custom-sql-readtable*)) (cl-postgres:exec-prepared ...)) at the time of writing our postmodern branch contains a few extra patches. Marijn, please take a look at them and push to the official if you have no concerns with it. darcs pull http://www.common-lisp.net/project/cl-dwim/darcs/postmodern/ -- attila

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[postmodern-devel] Incompatible changes coming up
by Marijn Haverbeke 07 Mar '08

07 Mar '08

Hello list, The next version of Postmodern, 1.10, will include a number of incompatible changes. I have started pushing these changes to the repository, so if you need a stable interface, you should be careful when fetching patches. The repository at http://common-lisp.net/project/postmodern/darcs/postmodern-old holds only backwards-compatible changes. After 1.10 has been properly released and declared stable, I will stop supporting the old interface -- the changes are not that big, and I am too lazy to support multiple branches. So consider yourself warned ;) Cheers, Marijn

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[postmodern-devel] problem with a patch `integer-reader'
by Lars Rune Nøstdal 27 Feb '08

27 Feb '08

Hi, It seems the patch "Sun Nov 11 17:31:19 CET 2007 attila.lendvai(a)gmail.com" is causing some problems when compiling Postmodern on SBCL. As soon as I unpull the patch using darcs the problem goes away and Postmodern compiles. I tried both SBCL-1.0.12 and latest SBCL from CVS -- same problem: CL-USER> (require :postmodern) .. .. ; compiling file "/home/lars/programming/lisp/postmodern/cl-postgres/protocol.lisp" (written 26 FEB 2008 11:08:47 AM): ; compiling (IN-PACKAGE :CL-POSTGRES) ; compiling (DEFINE-CONDITION PROTOCOL-ERROR ...) ; compiling (DEFMACRO MESSAGE-CASE ...) ; compiling (DEFUN READ-BYTE-DELIMITED ...) ; compiling (DEFUN GET-ERROR ...) ; compiling (DEFINE-CONDITION POSTGRESQL-WARNING ...) ; compiling (DEFUN GET-WARNING ...) ; compiling (DEFUN AUTHENTICATE ...) Here is the backtrace: The value NIL is not of type SB-C::NODE. [Condition of type TYPE-ERROR] Restarts: 0: [RETRY] Retry performing #<ASDF:COMPILE-OP NIL {B1C9CA9}> on #<ASDF:CL-SOURCE-FILE "protocol" {B1C9D59}>. 1: [ACCEPT] Continue, treating #<ASDF:COMPILE-OP NIL {B1C9CA9}> on #<ASDF:CL-SOURCE-FILE "protocol" {B1C9D59}> as having been successful. 2: [ABORT] Return to SLIME's top level. 3: [TERMINATE-THREAD] Terminate this thread (#<THREAD "repl-thread" {B20BD39}>) Backtrace: 0: (SB-C::NODE-HOME-LAMBDA NIL)[:EXTERNAL] 1: ((LABELS SB-C::FLOOD) #<SB-C::PHYSENV :LAMBDA #<SB-C::CLAMBDA :%SOURCE-NAME SB-C::.ANONYMOUS. :%DEBUG-NAME (SB-C::TL-XEP CL-POSTGRES::AUTHENTICATE) :KIND :EXTERNAL :TYPE #<SB-KERNEL:BUILT-IN-CLASSOID FUNCTION (read-only)> :WHERE-FROM :DEFINED :VARS (#:G251 #:G252 #:G253 #:G254 #:G255) {B3DB279}> :CLOSURE (#<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::SOCKET :TYPE #<SB-KERNEL:BUILT-IN-CLASSOID STREAM (read-only)> {B38D641}>) {C484619}>) 2: ((LABELS SB-C::FLOOD) #<SB-C::PHYSENV :LAMBDA #<SB-C::CLAMBDA :%SOURCE-NAME CL-POSTGRES::AUTHENTICATE :%DEBUG-NAME NIL :KIND NIL :TYPE #<SB-KERNEL:FUN-TYPE (FUNCTION # #)> :WHERE-FROM :DEFINED :VARS (CL-POSTGRES::SOCKET CL-POSTGRES::USER CL-POSTGRES::PASSWORD CL-POSTGRES::DATABASE) {B363571}> :CLOSURE (#<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::SOCKET :TYPE #<SB-KERNEL:BUILT-IN-CLASSOID STREAM (read-only)> {B38D641}>) {C484649}>) 3: ((LABELS SB-C::FLOOD) #<SB-C::PHYSENV :LAMBDA #<SB-C::CLAMBDA :%SOURCE-NAME #1=#:G245 :%DEBUG-NAME (LABELS #1#) :KIND NIL :TYPE #<SB-KERNEL:FUN-TYPE (FUNCTION NIL *)> :WHERE-FROM :DEFINED :VARS NIL {B3B5E79}> :CLOSURE (#<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::SOCKET :TYPE #<SB-KERNEL:BUILT-IN-CLASSOID STREAM (read-only)> {B38D641}> #<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::PARAMETERS :TYPE #<SB-KERNEL:STRUCTURE-CLASSOID HASH-TABLE> {B3639F9}> #<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::SOCKET {B363399}>) {C484631}>) 4: (SB-C::CLOSE-OVER #<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::SOCKET :TYPE #<SB-KERNEL:BUILT-IN-CLASSOID STREAM (read-only)> {B38D641}> #<SB-C::PHYSENV :LAMBDA #<SB-C::CLAMBDA :%SOURCE-NAME #1=#:G245 :%DEBUG-NAME (LABELS #1#) :KIND NIL :TYPE #<SB-KERNEL:FUN-TYPE (FUNCTION NIL *)> :WHERE-FROM :DEFINED :VARS NIL {B3B5E79}> :CLOSURE (#<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::SOCKET :TYPE #<SB-KERNEL:BUILT-IN-CLASSOID STREAM (read-only)> {B38D641}> #<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::PARAMETERS :TYPE #<SB-KERNEL:STRUCTURE-CLASSOID HASH-TABLE> {B3639F9}> #<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::SOCKET {B363399}>) {C484631}> #<SB-C::PHYSENV :LAMBDA #<SB-C::CLAMBDA :%SOURCE-NAME #1=#:G209 :%DEBUG-NAME (LABELS #1#) :KIND NIL :TYPE #<SB-KERNEL:FUN-TYPE (FUNCTION NIL #)> :WHERE-FROM :DEFINED :VARS NIL {B368459}> :CLOSURE (#<SB-C::LAMBDA-VAR :%SOURCE-NAME #:G206 :TYPE #<SB-KERNEL:BUILT-IN-CLASSOID STREAM (read-only)> {B367E51}> #<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::PASSWORD {B363449}> #<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::USER {B3633F1}> #<SB-C::LAMBDA-VAR :%SOURCE-NAME CL-POSTGRES::SOCKET {B363399}>) {C484661}>) 5: (SB-C::%ADD-LAMBDA-VARS-TO-CLOSURES #<SB-C::CLAMBDA :%SOURCE-NAME CL-POSTGRES::READ-UINT4 :%DEBUG-NAME NIL :KIND :LET :TYPE #<SB-KERNEL:BUILT-IN-CLASSOID FUNCTION (read-only)> :WHERE-FROM :DEFINED :VARS (CL-POSTGRES::SOCKET) {B38D7E1}>) 6: (SB-C::ADD-LAMBDA-VARS-AND-LET-VARS-TO-CLOSURES #<SB-C::CLAMBDA :%SOURCE-NAME #1=#:G209 :%DEBUG-NAME (LABELS #1#) :KIND NIL :TYPE #<SB-KERNEL:FUN-TYPE (FUNCTION NIL (VALUES NULL &OPTIONAL))> :WHERE-FROM :DEFINED :VARS NIL {B368459}>) 7: (SB-C::PHYSENV-ANALYZE #<SB-C:COMPONENT :NAME SB-IMPL::ANSI-STREAM-P {B4FB671}>) 8: (SB-C::COMPILE-COMPONENT #<SB-C:COMPONENT :NAME SB-IMPL::ANSI-STREAM-P {B4FB671}>) 9: (SB-C::%COMPILE (SB-INT:NAMED-LAMBDA CL-POSTGRES::AUTHENTICATE (CL-POSTGRES::SOCKET CL-POSTGRES::USER CL-POSTGRES::PASSWORD CL-POSTGRES::DATABASE) (BLOCK CL-POSTGRES::AUTHENTICATE (LET # # # # # ...))) #<SB-FASL:FASL-OUTPUT "/home/lars/programming/lisp/postmodern/cl-postgres/protocol.fasl">)[:EXTERNAL] 10: (SB-C::FOPCOMPILE-FUNCTION (SB-INT:NAMED-LAMBDA CL-POSTGRES::AUTHENTICATE (CL-POSTGRES::SOCKET CL-POSTGRES::USER CL-POSTGRES::PASSWORD CL-POSTGRES::DATABASE) (BLOCK CL-POSTGRES::AUTHENTICATE (LET # # # # # ...))) (#1=(SB-IMPL::%DEFUN (QUOTE CL-POSTGRES::AUTHENTICATE) (SB-INT:NAMED-LAMBDA CL-POSTGRES::AUTHENTICATE # #) "Try to initiate a connection. Caller should close the socket if this raises a condition." (QUOTE NIL) (SB-C:SOURCE-LOCATION)) #2=(EVAL-WHEN (:LOAD-TOPLEVEL :EXECUTE) #1#) (PROGN (EVAL-WHEN # #) #2#) SB-C::ORIGINAL-SOURCE-START 0 7) T) 11: (SB-C::FOPCOMPILE (SB-IMPL::%DEFUN (QUOTE CL-POSTGRES::AUTHENTICATE) (SB-INT:NAMED-LAMBDA CL-POSTGRES::AUTHENTICATE (CL-POSTGRES::SOCKET CL-POSTGRES::USER CL-POSTGRES::PASSWORD CL-POSTGRES::DATABASE) (BLOCK CL-POSTGRES::AUTHENTICATE #)) "Try to initiate a connection. Caller should close the socket if this raises a condition." (QUOTE NIL) (SB-C:SOURCE-LOCATION)) (#1=(SB-IMPL::%DEFUN (QUOTE CL-POSTGRES::AUTHENTICATE) (SB-INT:NAMED-LAMBDA CL-POSTGRES::AUTHENTICATE # #) "Try to initiate a connection. Caller should close the socket if this raises a condition." (QUOTE NIL) (SB-C:SOURCE-LOCATION)) #2=(EVAL-WHEN (:LOAD-TOPLEVEL :EXECUTE) #1#) (PROGN (EVAL-WHEN # #) #2#) SB-C::ORIGINAL-SOURCE-START 0 7) NIL) 12: (SB-C::CONVERT-AND-MAYBE-COMPILE (SB-IMPL::%DEFUN (QUOTE CL-POSTGRES::AUTHENTICATE) (SB-INT:NAMED-LAMBDA CL-POSTGRES::AUTHENTICATE (CL-POSTGRES::SOCKET CL-POSTGRES::USER CL-POSTGRES::PASSWORD CL-POSTGRES::DATABASE) (BLOCK CL-POSTGRES::AUTHENTICATE #)) "Try to initiate a connection. Caller should close the socket if this raises a condition." (QUOTE NIL) (SB-C:SOURCE-LOCATION)) (#1=(SB-IMPL::%DEFUN (QUOTE CL-POSTGRES::AUTHENTICATE) (SB-INT:NAMED-LAMBDA CL-POSTGRES::AUTHENTICATE # #) "Try to initiate a connection. Caller should close the socket if this raises a condition." (QUOTE NIL) (SB-C:SOURCE-LOCATION)) #2=(EVAL-WHEN (:LOAD-TOPLEVEL :EXECUTE) #1#) (PROGN (EVAL-WHEN # #) #2#) SB-C::ORIGINAL-SOURCE-START 0 7)) 13: ((FLET SB-C::DEFAULT-PROCESSOR) (SB-IMPL::%DEFUN (QUOTE CL-POSTGRES::AUTHENTICATE) (SB-INT:NAMED-LAMBDA CL-POSTGRES::AUTHENTICATE (CL-POSTGRES::SOCKET CL-POSTGRES::USER CL-POSTGRES::PASSWORD CL-POSTGRES::DATABASE) (BLOCK CL-POSTGRES::AUTHENTICATE #)) "Try to initiate a connection. Caller should close the socket if this raises a condition." (QUOTE NIL) (SB-C:SOURCE-LOCATION))) 14: (SB-C::PROCESS-TOPLEVEL-FORM (SB-IMPL::%DEFUN (QUOTE CL-POSTGRES::AUTHENTICATE) (SB-INT:NAMED-LAMBDA CL-POSTGRES::AUTHENTICATE (CL-POSTGRES::SOCKET CL-POSTGRES::USER CL-POSTGRES::PASSWORD CL-POSTGRES::DATABASE) (BLOCK CL-POSTGRES::AUTHENTICATE #)) "Try to initiate a connection. Caller should close the socket if this raises a condition." (QUOTE NIL) (SB-C:SOURCE-LOCATION)) (#1=(EVAL-WHEN (:LOAD-TOPLEVEL :EXECUTE) (SB-IMPL::%DEFUN # # "Try to initiate a connection. Caller should close the socket if this raises a condition." # #)) (PROGN (EVAL-WHEN # #) #1#) SB-C::ORIGINAL-SOURCE-START 0 7) NIL) 15: (SB-C::PROCESS-TOPLEVEL-PROGN ((SB-IMPL::%DEFUN (QUOTE CL-POSTGRES::AUTHENTICATE) (SB-INT:NAMED-LAMBDA CL-POSTGRES::AUTHENTICATE # #) "Try to initiate a connection. Caller should close the socket if this raises a condition." (QUOTE NIL) (SB-C:SOURCE-LOCATION))) (#1=(EVAL-WHEN (:LOAD-TOPLEVEL :EXECUTE) (SB-IMPL::%DEFUN # # "Try to initiate a connection. Caller should close the socket if this raises a condition." # #)) (PROGN (EVAL-WHEN # #) #1#) SB-C::ORIGINAL-SOURCE-START 0 7) NIL) 16: (SB-C::PROCESS-TOPLEVEL-FORM (EVAL-WHEN (:LOAD-TOPLEVEL :EXECUTE) (SB-IMPL::%DEFUN (QUOTE CL-POSTGRES::AUTHENTICATE) (SB-INT:NAMED-LAMBDA CL-POSTGRES::AUTHENTICATE # #) "Try to initiate a connection. Caller should close the socket if this raises a condition." (QUOTE NIL) (SB-C:SOURCE-LOCATION))) ((PROGN (EVAL-WHEN # #) (EVAL-WHEN # #)) SB-C::ORIGINAL-SOURCE-START 0 7) NIL) 17: (SB-C::PROCESS-TOPLEVEL-PROGN ((EVAL-WHEN (:COMPILE-TOPLEVEL) (SB-C:%COMPILER-DEFUN # # T)) (EVAL-WHEN (:LOAD-TOPLEVEL :EXECUTE) (SB-IMPL::%DEFUN # # "Try to initiate a connection. Caller should close the socket if this raises a condition." # #))) ((PROGN (EVAL-WHEN # #) (EVAL-WHEN # #)) SB-C::ORIGINAL-SOURCE-START 0 7) NIL) 18: (SB-C::PROCESS-TOPLEVEL-FORM (PROGN (EVAL-WHEN (:COMPILE-TOPLEVEL) (SB-C:%COMPILER-DEFUN # # T)) (EVAL-WHEN (:LOAD-TOPLEVEL :EXECUTE) (SB-IMPL::%DEFUN # # "Try to initiate a connection. Caller should close the socket if this raises a condition." # #))) (SB-C::ORIGINAL-SOURCE-START 0 7) NIL) 19: ((FLET SB-C::DEFAULT-PROCESSOR) (DEFUN CL-POSTGRES::AUTHENTICATE (CL-POSTGRES::SOCKET CL-POSTGRES::USER CL-POSTGRES::PASSWORD CL-POSTGRES::DATABASE) "Try to initiate a connection. Caller should close the socket if this raises a condition." (LET (#) (CL-POSTGRES::STARTUP-MESSAGE CL-POSTGRES::SOCKET CL-POSTGRES::USER CL-POSTGRES::DATABASE) (FORCE-OUTPUT CL-POSTGRES::SOCKET) (LOOP #) (LOOP #) ...))) 20: (SB-C::PROCESS-TOPLEVEL-FORM (DEFUN CL-POSTGRES::AUTHENTICATE (CL-POSTGRES::SOCKET CL-POSTGRES::USER CL-POSTGRES::PASSWORD CL-POSTGRES::DATABASE) "Try to initiate a connection. Caller should close the socket if this raises a condition." (LET (#) (CL-POSTGRES::STARTUP-MESSAGE CL-POSTGRES::SOCKET CL-POSTGRES::USER CL-POSTGRES::DATABASE) (FORCE-OUTPUT CL-POSTGRES::SOCKET) (LOOP #) (LOOP #) ...)) (SB-C::ORIGINAL-SOURCE-START 0 7) NIL) 21: (SB-C::SUB-SUB-COMPILE-FILE #<SB-C::SOURCE-INFO >) 22: ((LAMBDA NIL)) 23: (SB-C::%WITH-COMPILATION-UNIT #<CLOSURE (LAMBDA NIL) {C43F43D}>)[:EXTERNAL] 24: (SB-C::SUB-COMPILE-FILE #<SB-C::SOURCE-INFO >) 25: (COMPILE-FILE #P"/home/lars/programming/lisp/postmodern/cl-postgres/protocol.lisp")[:EXTERNAL] -- Lars Rune Nøstdal http://nostdal.org/

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[postmodern-devel] Re: patches for Postmodern
by Attila Lendvai 26 Feb '08

26 Feb '08

> Looking a bit deeper into the issue of passing values directly to > prepared statements -- one thing we'd have to do first is define some > kind of consistent interface. Right now the rules for what you may > pass in there and how they get treated are completely inconsistent. > I'm not sure how to clean this up without adding overhead or cruft, > though. the following is my mental model about the issue (which is obviously altered by the fact that i use cl-postgres as a backend for cl-rdbms): cl-postgres can send down 4 kind of values to the database: - byte vectors - strings - local-time timestamps (this one is sleazy, see below why) - numbers (this one is sleazy too, because postgresql doesn't know about rationals and converting them to double float under the hood loses precision. i'm not happy about this but it's much more practical then signaling an error and forcing the caller to deal with this all around by doing the same) if your value does not fit in any of these then you must convert it to string yourself before binding it, but it must be done in a higher abstraction layer where (sql) type information is available. an example to demonstrate it is local-time, where the lisp local-time value is used to represent three different db types (timestamp, date, time; where the latter two have constraints on various parts on the local-time value). if you don't care about asserts then you can just local-time:format-rfc3339-timestring the timestamp but it would silently drop information in case of programming errors (e.g. binding a local-time timestamp with non-utc timezone into an sql timestamp without timezone value. postgresql silently ignores the timezone info when doing this). the relevant part of cl-rdbms that deals with this is in execute-postmodern-prepared-statement here: http://common-lisp.net/cgi-bin/darcsweb/darcsweb.cgi?r=cl-rdbms-cl-rdbms;a=… some tests dealing with syntax and types: http://common-lisp.net/cgi-bin/darcsweb/darcsweb.cgi?r=cl-rdbms-cl-rdbms;a=… -- attila

1 0

[postmodern-devel] Using postgresql's default option for column values
by Peter Eddy 12 Feb '08

12 Feb '08

Hi, new postmodern user here. I'd like to be able to use postgresql's 'default' column value feature instead of an :initform in deftable. Is that possible? I haven't had any luck getting it to work. I have a couple of reasons for wanting to do this, first I have several tables that get their primary keys from a single postgresql sequence, e.g.: create table fooA ( id int8 default nextval( 'id_source' ) primary key, ... ) create table fooB ( id int8 default nextval( 'id_source' ) primary key, ... ) Additionally, other table columns use the 'default' option to create creation time stamps and so forth. I can't remove these options from the table definitions because that would break the other applications that use the database. So, what I'm really after is the ability to define fields with deftable so that those fields are not initialized by (make-instance) but read into the dao after creation, similarly to how auto-id appears to work. I looked through the archives but didn't see anything that looked related to this. thanks, Peter

3 5

[postmodern-devel] dynamically built queries
by Ralf Mattes 04 Feb '08

04 Feb '08

Hello list, I need to create queries dynamically and seem to have run into a silly showstopper. I want to create queries like ... SELECT tmp1.name, tmp1.value as "{foo}bar" from baz as tmp1; ... where both the table name alias ("tmp1") as well as the field name alias ("{foo}bar") are _Strings_. Now, if i do: (sql-compile '(:dot "tmp1" value)) --> "E'tmp1'.value" which is definitely _not_ what i want. The same for: (sql-compile '(:as "tmp1" baz)) --> "E'tmp1' AS baz" If possible at all I'd like to avoid the (make-symbol "tmp1") and similar workarrounds. Any ideas? TIA Ralf Mattes

3 3

[postmodern-devel] Release 1.05
by Marijn Haverbeke 16 Jan '08

16 Jan '08

Hello list, Thanks to Ivan's relentless bug finding and feature requesting, version 1.05 of Postmodern is now a reality. See project page (http://common-lisp.net/project/postmodern/) or darcs log (http://common-lisp.net/cgi-bin/darcsweb/darcsweb.cgi?r=postmodern-postmoder…) for a change list. Enjoy, Marijn

2 2

[postmodern-devel] deftable class-name and unique indices problems
by William Robinson 14 Jan '08

14 Jan '08

Hi. Thanks for the library. I was struggling a bit with pomo's DAO support. A few points: I think it is worth reinforcing in the deftable documentation that a class-name NEEDS to be specified for the data-access methods to function. Can we have/is there a facility for creating unique multi-column indices in deftable? Some more examples for deftable would certainly not go amiss, particularly with repect to usage of :auto-id, :indices and :defer-id. Thanks Bill

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