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|
# PostgreSQL support
<
sys .so ":" via
"libpq.so" :dlopen --
{ "PQ" -01 cat -021 -210 :resolveFunction }' "=>" deffd
{ _ "PQ" -01 cat -1032 :resolveFunction -01 deffd }' "->" deffd
# connection setup and teardown
"s" "p" ->connectdb
"p" "" ->finish
# connection parameter getters
"p" "s" ->db
"p" "s" ->user
"p" "s" ->host
"p" "s" ->port
"p" "s" ->options
0 ==:CONNECTION_OK
1 ==:CONNECTION_BAD
"p" "u32" ->status
0 ==:TRANS_IDLE
1 ==:TRANS_ACTIVE
2 ==:TRANS_INTRANS
3 ==:TRANS_INERROR
4 ==:TRANS_UNKNOWN
"p" "u32" ->transactionStatus
{ -01 } "ps" "s" =>parameterStatus ; /parameterStatus deffd
"p" "s" ->errorMessage
"p" "u32" ->socket
"p" "u32" ->backendPID
# 0 -> connection
# 1 -> statement SQL text
# 0 <- result
{ -01 } "ps" "p" =>exec ; /exec deffd
# 0 -> connection
# 1 -> statement SQL text
# 2 -> paramCount
# 3 ... -> parameters (last one at 3)
# 0 <- result
<
"psiibiii" "p" =>execParams =*:internalExecParams
{ ==con ==sql ==paramCount
paramCount 8 mul str .alloc ==paramValues
paramValues :rawContentAddress paramCount 8 mul add ==i
[ ] ==saveFromGC
paramCount { _ sys .typed .type ==t
i 8 sub =i
[
{ t 0 eq }' { txt .produce .u "\0" cat }'
{ t 1 eq }' { "\0" cat }'
{ 1 }' { "unsupported parameter type" die }
] conds
_ [ -01 ] saveFromGC cat =saveFromGC
:rawContentAddress i :mem .produce .u64
} rep
con
sql
paramCount
0 # all parameters implicitely typed
paramValues
0 # all parameters passed as text
0 # all parameters passed as text
0 # text results requested
internalExecParams
}
> -- /execParams deffd
# 0 -> connection
# 1 -> statement name
# 2 -> statement SQL text
# 0 <- result
{ 0 -12300 } "pssii" "p" =>prepare ; /prepare deffd
0 ==:EMPTY_QUERY
1 ==:COMMAND_OK
2 ==:TUPLES_OK
3 ==:COPY_OUT
4 ==:COPY_IN
5 ==:BAD_RESPONSE
6 ==:NONFATAL_ERROR
7 ==:FATAL_ERROR
8 ==:COPY_BOTH
9 ==:SINGLE_TUPLE
"p" "u32" ->resultStatus
"i" "s" ->resStatus
"p" "s" ->resultErrorMessage
# 0 -> result
"p" "" ->clear
"p" "i32" ->ntuples
"p" "i32" ->nfields
{ -01 } "pi" "s" =>fname ; /fname deffd
{ -01 } "ps" "i32" =>fnumber ; /fnumber deffd
# 0 -> result
# 1 -> row number
# 2 -> column number
# 0 <- value
{ -021 } "pii" "s" =>getvalue ; /getvalue deffd
# 0 -> result
# 1 -> row number
# 2 -> column number
# 0 <- 1 if the field is null
{ -021 } "pii" "u32" =>getisnull ; /getisnull deffd
"p" "s" ->cmdStatus
"p" "s" ->cmdTuples
# 0 -> connection
# 1 -> encoding
# 0 <- 0 on success
{ -01 } "ps" "i32" =>setClientEncoding ; /setClientEncoding deffd
# object oriented interface
"s" "p" =>connectdb { ==con <
[
/finish /db /user /host /port /options /status /transactionStatus
/parameterStatus /errorMessage /socket /backendPID
/prepare
/setClientEncoding
] {
{ con } ffi .pq -2102 .| ; -01 deffst
}' each
|errorMessage /error deffst
[
/exec /execParams /prepare
] {
{ con } ffi .pq -2102 .| ; { ==res <
[
/resultStatus /resultErrorMessage
/clear /ntuples /nfields /fname /fnumber
/getvalue /getisnull /cmdStatus /cmdTuples
] {
{ res } ffi .pq -2102 .| ; -01 deffst
}' each
|resultErrorMessage /error deffst
|resultStatus /status deffst
|resultStatus |resStatus ; /strStatus deffst
{
0 nfields range ==fieldRange
[ fieldRange { fname } each ] =*fieldNames
[ 0 ntuples range { ==r
<
fieldRange { == }' { =*def ==c
r c getvalue c fieldNames def
}_ each
>
} each ]
} /all deffst
> } ; -01 deffst
}' each
> } ; /connect deffd
{
connect ==con
con .status { <
con .errorMessage ==msg
> ???io.ffi.pq } rep
{ # ==nsQuery
"" ==spaceQuery
{ _ "([^ ]*) (.*)" regex } { -102 --
spaceQuery -01 cat " " cat =spaceQuery
} loop spaceQuery -01 cat =spaceQuery
spaceQuery ==parameterCountTmp
0 ==maxParameter
{ parameterCountTmp "^(.*)\\$(\\d+)(.*)$" regex } { ==a ==p ==b
a b cat =parameterCountTmp
p txt .consume .u maxParameter max =maxParameter
} loop
maxParameter {
maxParameter spaceQuery con .execParams
} {
spaceQuery con .exec
} ? * ":-" via
[
{ :-status |COMMAND_OK eq }' { :-clear }'
{ :-status |TUPLES_OK eq }' { :-all :-clear }'
{ 1 }' { < :-error ==msg > ???io.ffi.pq }
] conds
}
} /functional deffd
> /pq ffi .defv
# vim: syn=elymas
|
