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Fix plpython so that it again honors typmod while assigning to tuple fields. 

This was broken in 9.0 while improving plpython's conversion behavior for
bytea and boolean.  Per bug report from maizi.
This commit is contained in:
Tom Lane 2010-10-11 22:16:40 -04:00
parent 4016bdef8a
commit 09130e5867
3 changed files with 76 additions and 35 deletions
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26
src/pl/plpython/expected/plpython_trigger.out
View File

@ -523,3 +523,29 @@ SELECT * FROM trigger_test;
0 |
(1 row)
--
-- Test that triggers honor typmod when assigning to tuple fields,
-- as per an early 9.0 bug report
--
SET DateStyle = 'ISO';
CREATE FUNCTION set_modif_time() RETURNS trigger AS $$
TD['new']['modif_time'] = '2010-10-13 21:57:28.930486'
return 'MODIFY'
$$ LANGUAGE plpythonu;
CREATE TABLE pb (a TEXT, modif_time TIMESTAMP(0) WITHOUT TIME ZONE);
CREATE TRIGGER set_modif_time BEFORE UPDATE ON pb
FOR EACH ROW EXECUTE PROCEDURE set_modif_time();
INSERT INTO pb VALUES ('a', '2010-10-09 21:57:33.930486');
SELECT * FROM pb;
a | modif_time
---+---------------------
a | 2010-10-09 21:57:34
(1 row)
UPDATE pb SET a = 'b';
SELECT * FROM pb;
a | modif_time
---+---------------------
b | 2010-10-13 21:57:29
(1 row)

62
src/pl/plpython/plpython.c
View File

@ -153,10 +153,8 @@ typedef union PLyTypeInput
*/
struct PLyObToDatum;
struct PLyTypeInfo;
typedef Datum (*PLyObToDatumFunc) (struct PLyTypeInfo *,
struct PLyObToDatum *,
PyObject *);
typedef Datum (*PLyObToDatumFunc) (struct PLyObToDatum *, int32 typmod,
PyObject *);
typedef struct PLyObToDatum
{
@ -346,14 +344,10 @@ static PyObject *PLyList_FromArray(PLyDatumToOb *arg, Datum d);
static PyObject *PLyDict_FromTuple(PLyTypeInfo *, HeapTuple, TupleDesc);
static Datum PLyObject_ToBool(PLyTypeInfo *, PLyObToDatum *,
PyObject *);
static Datum PLyObject_ToBytea(PLyTypeInfo *, PLyObToDatum *,
PyObject *);
static Datum PLyObject_ToDatum(PLyTypeInfo *, PLyObToDatum *,
PyObject *);
static Datum PLySequence_ToArray(PLyTypeInfo *, PLyObToDatum *,
PyObject *);
static Datum PLyObject_ToBool(PLyObToDatum *, int32, PyObject *);
static Datum PLyObject_ToBytea(PLyObToDatum *, int32, PyObject *);
static Datum PLyObject_ToDatum(PLyObToDatum *, int32, PyObject *);
static Datum PLySequence_ToArray(PLyObToDatum *, int32, PyObject *);
static HeapTuple PLyMapping_ToTuple(PLyTypeInfo *, PyObject *);
static HeapTuple PLySequence_ToTuple(PLyTypeInfo *, PyObject *);
@ -421,7 +415,8 @@ static void
plpython_error_callback(void *arg)
{
if (PLy_curr_procedure)
errcontext("PL/Python function \"%s\"", PLy_procedure_name(PLy_curr_procedure));
errcontext("PL/Python function \"%s\"",
PLy_procedure_name(PLy_curr_procedure));
}
static void
@ -743,7 +738,9 @@ PLy_modify_tuple(PLyProcedure *proc, PyObject *pltd, TriggerData *tdata,
{
PLyObToDatum *att = &proc->result.out.r.atts[atti];
modvalues[i] = (att->func) (&proc->result, att, plval);
modvalues[i] = (att->func) (att,
tupdesc->attrs[atti]->atttypmod,
plval);
modnulls[i] = ' ';
}
else
@ -1132,9 +1129,7 @@ PLy_function_handler(FunctionCallInfo fcinfo, PLyProcedure *proc)
else
{
fcinfo->isnull = false;
rv = (proc->result.out.d.func) (&proc->result,
&proc->result.out.d,
plrv);
rv = (proc->result.out.d.func) (&proc->result.out.d, -1, plrv);
}
}
PG_CATCH();
@ -2099,9 +2094,7 @@ PLyDict_FromTuple(PLyTypeInfo *info, HeapTuple tuple, TupleDesc desc)
* type can parse.
*/
static Datum
PLyObject_ToBool(PLyTypeInfo *info,
PLyObToDatum *arg,
PyObject *plrv)
PLyObject_ToBool(PLyObToDatum *arg, int32 typmod, PyObject *plrv)
{
Datum rv;
@ -2120,9 +2113,7 @@ PLyObject_ToBool(PLyTypeInfo *info,
* with embedded nulls. And it's faster this way.
*/
static Datum
PLyObject_ToBytea(PLyTypeInfo *info,
PLyObToDatum *arg,
PyObject *plrv)
PLyObject_ToBytea(PLyObToDatum *arg, int32 typmod, PyObject *plrv)
{
PyObject *volatile plrv_so = NULL;
Datum rv;
@ -2164,9 +2155,7 @@ PLyObject_ToBytea(PLyTypeInfo *info,
* cstring into PostgreSQL type.
*/
static Datum
PLyObject_ToDatum(PLyTypeInfo *info,
PLyObToDatum *arg,
PyObject *plrv)
PLyObject_ToDatum(PLyObToDatum *arg, int32 typmod, PyObject *plrv)
{
PyObject *volatile plrv_bo = NULL;
Datum rv;
@ -2202,7 +2191,10 @@ PLyObject_ToDatum(PLyTypeInfo *info,
else if (slen > plen)
elog(ERROR, "could not convert Python object into cstring: Python string longer than reported length");
pg_verifymbstr(plrv_sc, slen, false);
rv = InputFunctionCall(&arg->typfunc, plrv_sc, arg->typioparam, -1);
rv = InputFunctionCall(&arg->typfunc,
plrv_sc,
arg->typioparam,
typmod);
}
PG_CATCH();
{
@ -2217,9 +2209,7 @@ PLyObject_ToDatum(PLyTypeInfo *info,
}
static Datum
PLySequence_ToArray(PLyTypeInfo *info,
PLyObToDatum *arg,
PyObject *plrv)
PLySequence_ToArray(PLyObToDatum *arg, int32 typmod, PyObject *plrv)
{
ArrayType *array;
int i;
@ -2251,7 +2241,7 @@ PLySequence_ToArray(PLyTypeInfo *info,
* We don't support arrays of row types yet, so the first argument
* can be NULL.
*/
elems[i] = arg->elm->func(NULL, arg->elm, obj);
elems[i] = arg->elm->func(arg->elm, -1, obj);
}
Py_XDECREF(obj);
}
@ -2300,7 +2290,7 @@ PLyMapping_ToTuple(PLyTypeInfo *info, PyObject *mapping)
}
else if (value)
{
values[i] = (att->func) (info, att, value);
values[i] = (att->func) (att, -1, value);
nulls[i] = false;
}
else
@ -2377,7 +2367,7 @@ PLySequence_ToTuple(PLyTypeInfo *info, PyObject *sequence)
}
else if (value)
{
values[i] = (att->func) (info, att, value);
values[i] = (att->func) (att, -1, value);
nulls[i] = false;
}
@ -2437,7 +2427,7 @@ PLyObject_ToTuple(PLyTypeInfo *info, PyObject *object)
}
else if (value)
{
values[i] = (att->func) (info, att, value);
values[i] = (att->func) (att, -1, value);
nulls[i] = false;
}
else
@ -3019,7 +3009,9 @@ PLy_spi_execute_plan(PyObject *ob, PyObject *list, long limit)
PG_TRY();
{
plan->values[j] =
plan->args[j].out.d.func(NULL, &(plan->args[j].out.d), elem);
plan->args[j].out.d.func(&(plan->args[j].out.d),
-1,
elem);
}
PG_CATCH();
{

23
src/pl/plpython/sql/plpython_trigger.sql
View File

@ -303,3 +303,26 @@ UPDATE trigger_test SET v = 'null' WHERE i = 0;
DROP TRIGGER test_null_trigger ON trigger_test;
SELECT * FROM trigger_test;
--
-- Test that triggers honor typmod when assigning to tuple fields,
-- as per an early 9.0 bug report
--
SET DateStyle = 'ISO';
CREATE FUNCTION set_modif_time() RETURNS trigger AS $$
TD['new']['modif_time'] = '2010-10-13 21:57:28.930486'
return 'MODIFY'
$$ LANGUAGE plpythonu;
CREATE TABLE pb (a TEXT, modif_time TIMESTAMP(0) WITHOUT TIME ZONE);
CREATE TRIGGER set_modif_time BEFORE UPDATE ON pb
FOR EACH ROW EXECUTE PROCEDURE set_modif_time();
INSERT INTO pb VALUES ('a', '2010-10-09 21:57:33.930486');
SELECT * FROM pb;
UPDATE pb SET a = 'b';
SELECT * FROM pb;