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I've fixed up the way domain constraints (not null and type length)

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are managed as per request.

Moved from merging with table attributes to applying themselves during
coerce_type() and coerce_type_typmod.

Regression tests altered to test the cast() scenarios.

Rod Taylor
This commit is contained in:
Bruce Momjian
2002-07-06 20:16:36 +00:00
parent 5af6e0a4ac
commit 1666970275
11 changed files with 263 additions and 112 deletions
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47
src/backend/executor/execQual.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execQual.c,v 1.96 2002/07/04 16:44:08 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execQual.c,v 1.97 2002/07/06 20:16:35 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -66,6 +66,8 @@ static Datum ExecEvalNullTest(NullTest *ntest, ExprContext *econtext,
bool *isNull, ExprDoneCond *isDone);
static Datum ExecEvalBooleanTest(BooleanTest *btest, ExprContext *econtext,
bool *isNull, ExprDoneCond *isDone);
static Datum ExecEvalConstraint(Constraint *constraint, ExprContext *econtext,
bool *isNull, ExprDoneCond *isDone);
/*----------
@ -1226,6 +1228,43 @@ ExecEvalNullTest(NullTest *ntest,
}
}
/*
* ExecEvalConstraint
*
* Test the constraint against the data provided. If the data fits
* within the constraint specifications, pass it through (return the
* datum) otherwise throw an error.
*/
static Datum
ExecEvalConstraint(Constraint *constraint, ExprContext *econtext,
bool *isNull, ExprDoneCond *isDone)
{
Datum result;
result = ExecEvalExpr(constraint->raw_expr, econtext, isNull, isDone);
/* Test for the constraint type */
switch(constraint->contype)
{
case CONSTR_NOTNULL:
if (*isNull)
{
elog(ERROR, "Domain %s does not allow NULL values", constraint->name);
}
break;
case CONSTR_CHECK:
elog(ERROR, "ExecEvalConstraint: Domain CHECK Constraints not yet implemented");
break;
default:
elog(ERROR, "ExecEvalConstraint: Constraint type unknown");
break;
}
/* If all has gone well (constraint did not fail) return the datum */
return result;
}
/* ----------------------------------------------------------------
* ExecEvalBooleanTest
*
@ -1473,6 +1512,12 @@ ExecEvalExpr(Node *expression,
isNull,
isDone);
break;
case T_Constraint:
retDatum = ExecEvalConstraint((Constraint *) expression,
econtext,
isNull,
isDone);
break;
case T_CaseExpr:
retDatum = ExecEvalCase((CaseExpr *) expression,
econtext,