Looking at the source and debug output now. How can I find out more about the converter.
For example the function typemap-oci-to-lisp is somewhat mysterious to me. Where is it defined?
ORACLE> (describe #'typemap-oci-to-lisp)
#<CLOSURE (LAMBDA (SB-KERNEL:INSTANCE)) {1003A97B79}>
[compiled closure]
Lambda-list: (INSTANCE)
Derived type: (FUNCTION (T) (VALUES T &OPTIONAL))
Source file: SYS:SRC;CODE;TARGET-DEFSTRUCT.LISP
; No value
ORACLE>
chris@catch22:~/code/lisp-tp$ ls hu-dwim/
hu.dwim.asdf hu.dwim.common hu.dwim.common-lisp hu.dwim.def hu.dwim.defclass-star hu.dwim.logger hu.dwim.rdbms hu.dwim.syntax-sugar hu.dwim.util hu.dwim.walker local-time
chris@catch22:~/code/lisp-tp$ grep -R "typemap-oci-to-lisp" hu-dwim
hu-dwim/hu.dwim.rdbms/source/oracle/backend.lisp: (converter (typemap-oci-to-lisp (typemap-of column-descriptor))))
*** source/oracle/backend.lisp
(def function fetch-column-value (column-descriptor row-index)
(rdbms.debug "Fetching ~S from buffer at index ~D" (name-of column-descriptor) row-index)
(aprog1 (let* ((indicator (cffi:mem-aref (indicators-of column-descriptor) :short row-index)))
(if (= indicator -1)
:null
(let* ((buffer (buffer-of column-descriptor))
(size (size-of column-descriptor))
(converter (typemap-oci-to-lisp (typemap-of column-descriptor))))
#+nil
(rdbms.dribble "Buffer:~%~A"
(dump-c-byte-array buffer (* size +number-of-buffered-rows+)))
(rdbms.dribble "Convert from ~D, size is ~D, content:~%~A"
(typemap-external-type (typemap-of column-descriptor)) size
(dump-c-byte-array (cffi:inc-pointer buffer (* row-index size))
size))
(funcall converter
(cffi:inc-pointer buffer (* row-index size))
size))))
(rdbms.debug "Fetched: ~S" it)))
*** sbcl/shell
* (setf (hu.dwim.rdbms::log-level 'rdbms) 0)
* (select-symtag)
12:20 0 RDBMS DEBUG About to BEGIN transaction in database #<ORACLE {1002AB8041}>
12:20 0 SQL DRIBBLE SELECT SYMTAG_KEY FROM symtag
12:20 0 RDBMS DEBUG Executing "SELECT SYMTAG_KEY FROM symtag"
STYLE-WARNING: Undefined alien: "OCIGetInstantClientPackageName"
STYLE-WARNING: Undefined alien: "OCIGetInstantClientPackageName"
12:20 0 RDBMS DEBUG Connecting in transaction #<#<STANDARD-CLASS NIL {10030AFD91}> :begin-executed-p #t {1003D1DE11}>
12:20 0 RDBMS DEBUG Logging on in transaction #<#<STANDARD-CLASS NIL {10030AFD91}> :begin-executed-p #t {1003D1DE11}>
12:20 0 RDBMS DEBUG Preparing command: "SELECT SYMTAG_KEY FROM symtag"
12:20 0 RDBMS DRIBBLE Statement is allocated
12:20 0 RDBMS DRIBBLE Retrieving column: name="??????????", type=1, size=44
12:20 0 RDBMS DEBUG Fetching "??????????" from buffer at index 0
12:20 0 RDBMS DRIBBLE Convert from 5, size is 90, content:
66 00 6F 00 6F 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
12:20 0 RDBMS DEBUG Fetched: "???"
12:20 0 RDBMS DEBUG Fetching "??????????" from buffer at index 0
12:20 0 RDBMS DRIBBLE Convert from 5, size is 90, content:
66 00 6F 00 6F 00 31 00 31 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
12:20 0 RDBMS DEBUG Fetched: "?????"
12:20 0 RDBMS DEBUG Fetching "??????????" from buffer at index 0
12:20 0 RDBMS DRIBBLE Convert from 5, size is 90, content:
66 00 6F 00 6F 00 62 00 61 00 72 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
12:20 0 RDBMS DEBUG Fetched: "??????"
12:20 0 RDBMS DEBUG Fetching "??????????" from buffer at index 0
12:20 0 RDBMS DRIBBLE Convert from 5, size is 90, content:
66 00 6F 00 6F 00 62 00 61 00 72 00 33 00 33 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
12:20 0 RDBMS DEBUG Fetched: "????????"
12:20 0 RDBMS DEBUG About to COMMIT transaction #<#<STANDARD-CLASS NIL {10030AFD91}> :begin-executed-p #t {1003D1DE11}>
12:20 0 RDBMS DEBUG Cleaning up Oracle transaction #<#<STANDARD-CLASS NIL {10030AFD91}> :begin-executed-p #t {1003D1DE11}> to database #<ORACLE {1002AB8041}>
12:20 0 RDBMS DEBUG Calling logoff in transaction #<#<STANDARD-CLASS NIL {10030AFD91}> :begin-executed-p #t {1003D1DE11}>
12:20 0 RDBMS DEBUG Freeing environment handle of transaction #<#<STANDARD-CLASS NIL {10030AFD91}> :begin-executed-p #t {1003D1DE11}>
#<(AND (VECTOR T 8) (NOT SIMPLE-ARRAY)) {1003DCCCBF}>
*
66 00 6F 00 6F 00 equals "foo"
66 00 6F 00 6F 00 31 00 31 00 equals "foo11"
66 00 6F 00 6F 00 62 00 61 00 72 00 equals "foobar"
66 00 6F 00 6F 00 62 00 61 00 72 00 33 00 33 00 equals "foobar33"
*** sqlplus
SQL> select "SYMTAG_KEY" from symtag;
SYMTAG_KEY
--------------------------------------------------------------------------------
foo
foobar
foo11
foobar33
SQL>
Regards,
chris