More informix fixes.

src/interfaces/ecpg/ChangeLog

@@ -1558,6 +1558,11 @@ Mon Jul  7 14:13:43 CEST 2003
 Tue Jul  8 09:04:31 CEST 2003
 
 	- Fixed segfault in ECPGconnect in Informix mode.
+	
+Tue Jul  8 12:34:00 CEST 2003
+
+	- Made Informix decimal-ascii conversion honor Informix NULLs.
+	- Informix variable handling didn't cope well with arrays.
 	- Set ecpg version to 3.0.0
 	- Set ecpg library to 4.0.0
 	- Set pgtypes library to 1.0.0

src/interfaces/ecpg/compatlib/informix.c

@@ -8,6 +8,7 @@
 #include <ecpg_informix.h>
 #include <pgtypes_error.h>
 #include <pgtypes_date.h>
+#include <sqltypes.h>
 
 char * ECPGalloc(long, int);
 
@@ -148,6 +149,11 @@ deccvasc(char *cp, int len, Decimal *np)
 	int ret = 0;
 	Numeric *result;
 
+	if (risnull(CSTRINGTYPE, cp))
+	{
+		rsetnull(CDECIMALTYPE, (char *)np);
+		return 0;
+	}
 
 	if (!str)
 		ret = -1201;
@@ -292,6 +298,12 @@ dectoasc(Decimal *np, char *cp, int len, int right)
 	if (nres == NULL)
 		return -1211;
 
+	if (risnull(CDECIMALTYPE, (char *)np))
+	{
+		rsetnull(CSTRINGTYPE, (char *)cp);
+		return 0;
+	}
+
 	if (PGTYPESnumeric_from_decimal(np, nres) != 0)
 		return -1211;
 	

src/interfaces/ecpg/ecpglib/data.c

-/* $Header: /cvsroot/pgsql/src/interfaces/ecpg/ecpglib/data.c,v 1.10 2003/07/01 12:40:51 meskes Exp $ */
+/* $Header: /cvsroot/pgsql/src/interfaces/ecpg/ecpglib/data.c,v 1.11 2003/07/08 12:11:28 meskes Exp $ */
 
 #define POSTGRES_ECPG_INTERNAL
 #include "postgres_fe.h"
@@ -24,6 +24,7 @@ ECPGget_data(const PGresult *results, int act_tuple, int act_field, int lineno,
 {
 	struct sqlca_t *sqlca = ECPGget_sqlca();
 	char	   *pval = (char *) PQgetvalue(results, act_tuple, act_field);
+	int	    value_for_indicator = 0;
 
 	ECPGlog("ECPGget_data line %d: RESULT: %s offset: %ld\n", lineno, pval ? pval : "", offset);
 
@@ -53,31 +54,34 @@ ECPGget_data(const PGresult *results, int act_tuple, int act_field, int lineno,
 	/* We will have to decode the value */
 
 	/*
-	 * check for null value and set indicator accordingly
+	 * check for null value and set indicator accordingly, i.e. -1 if NULL and 0 if not
 	 */
 	if (PQgetisnull(results, act_tuple, act_field))
-	{
+		value_for_indicator = -1;
+	
 	switch (ind_type)
 	{
 		case ECPGt_short:
 		case ECPGt_unsigned_short:
-				*((short *) (ind + ind_offset * act_tuple)) = -1;
+			*((short *) (ind + ind_offset * act_tuple)) = value_for_indicator;
 			break;
 		case ECPGt_int:
 		case ECPGt_unsigned_int:
-				*((int *) (ind + ind_offset * act_tuple)) = -1;
+			*((int *) (ind + ind_offset * act_tuple)) = value_for_indicator;
 			break;
 		case ECPGt_long:
 		case ECPGt_unsigned_long:
-				*((long *) (ind + ind_offset * act_tuple)) = -1;
+			*((long *) (ind + ind_offset * act_tuple)) = value_for_indicator;
 			break;
 #ifdef HAVE_LONG_LONG_INT_64
 		case ECPGt_long_long:
 		case ECPGt_unsigned_long_long:
-				*((long long int *) (ind + ind_offset * act_tuple)) = -1;
+			*((long long int *) (ind + ind_offset * act_tuple)) = value_for_indicator;
 			break;
 #endif   /* HAVE_LONG_LONG_INT_64 */
 		case ECPGt_NO_INDICATOR:
+			if (value_for_indicator == -1)
+			{				
 				if (force_indicator == false)
 				{
 					/* Informix has an additional way to specify NULLs
@@ -89,6 +93,7 @@ ECPGget_data(const PGresult *results, int act_tuple, int act_field, int lineno,
 					ECPGraise(lineno, ECPG_MISSING_INDICATOR, NULL);
 					return (false);
 				}
+			}
 			break;
 		default:
 			ECPGraise(lineno, ECPG_UNSUPPORTED, ECPGtype_name(ind_type));
@@ -96,8 +101,8 @@ ECPGget_data(const PGresult *results, int act_tuple, int act_field, int lineno,
 			break;
 	}
 
+	if (value_for_indicator == -1)
 		return (true);
-	}
 
 	do
 	{

src/interfaces/ecpg/ecpglib/execute.c

-/* $Header: /cvsroot/pgsql/src/interfaces/ecpg/ecpglib/execute.c,v 1.17 2003/07/07 12:15:33 meskes Exp $ */
+/* $Header: /cvsroot/pgsql/src/interfaces/ecpg/ecpglib/execute.c,v 1.18 2003/07/08 12:11:29 meskes Exp $ */
 
 /*
  * The aim is to get a simpler inteface to the database routines.
@@ -145,7 +145,6 @@ create_statement(int lineno, int compat, int force_indicator, struct connection
 			if (var->varcharsize < 0)
 				var->varcharsize = 0;
 		
-		
 			var->ind_type = va_arg(ap, enum ECPGttype);
 			var->ind_pointer = va_arg(ap, char *);
 			var->ind_varcharsize = va_arg(ap, long);
@@ -159,6 +158,13 @@ create_statement(int lineno, int compat, int force_indicator, struct connection
 			else
 				var->ind_value = var->ind_pointer;
 			
+			/* negative values are used to indicate an array without given bounds */
+			/* reset to zero for us */
+			if (var->ind_arrsize < 0)
+				var->ind_arrsize = 0;
+			if (var->ind_varcharsize < 0)
+				var->ind_varcharsize = 0;
+
 			for (ptr = *list; ptr && ptr->next; ptr = ptr->next);
 
 			if (ptr == NULL)

src/interfaces/ecpg/preproc/preproc.y

-/* $Header: /cvsroot/pgsql/src/interfaces/ecpg/preproc/Attic/preproc.y,v 1.244 2003/07/01 12:40:51 meskes Exp $ */
+/* $Header: /cvsroot/pgsql/src/interfaces/ecpg/preproc/Attic/preproc.y,v 1.245 2003/07/08 12:11:32 meskes Exp $ */
 
 /* Copyright comment */
 %{
@@ -208,10 +208,18 @@ adjust_informix(struct arguments *list)
 	 	/* change variable name to "ECPG_informix_get_var(<counter>)" */
 		original_var = ptr->variable->name;
 		sprintf(temp, "%d))", ecpg_informix_var);
-		ptr->variable = new_variable(cat_str(4, make_str("*("), mm_strdup(ECPGtype_name(ptr->variable->type->type)), make_str(" *)(ECPG_informix_get_var("), mm_strdup(temp)), ECPGmake_simple_type(ptr->variable->type->type, ptr->variable->type->size), 0);
 		
 		/* create call to "ECPG_informix_set_var(<counter>, <pointer>. <linen number>)" */
+		if (atoi(ptr->variable->type->size) > 1)
+		{
+			ptr->variable = new_variable(cat_str(4, make_str("("), mm_strdup(ECPGtype_name(ptr->variable->type->type)), make_str(" *)(ECPG_informix_get_var("), mm_strdup(temp)), ECPGmake_simple_type(ptr->variable->type->type, ptr->variable->type->size), 0);
+			sprintf(temp, "%d, (", ecpg_informix_var++);
+		}
+		else
+		{
+			ptr->variable = new_variable(cat_str(4, make_str("*("), mm_strdup(ECPGtype_name(ptr->variable->type->type)), make_str(" *)(ECPG_informix_get_var("), mm_strdup(temp)), ECPGmake_simple_type(ptr->variable->type->type, ptr->variable->type->size), 0);
 			sprintf(temp, "%d, &(", ecpg_informix_var++);
+		}
 		result = cat_str(5, result, make_str("ECPG_informix_set_var("), mm_strdup(temp), mm_strdup(original_var), make_str("), __LINE__);\n"));
 	 }
 

src/interfaces/ecpg/preproc/type.c

@@ -321,6 +321,10 @@ ECPGdump_a_simple(FILE *o, const char *name, enum ECPGttype type,
 		
 		switch (type)
 		{
+			/*
+			 * we have to use the & operator except for arrays and pointers
+                         */
+			
 			case ECPGt_varchar:
 
 				/*
@@ -342,7 +346,7 @@ ECPGdump_a_simple(FILE *o, const char *name, enum ECPGttype type,
 
 				/*
 				 * we have to use the pointer except for arrays with given
-				 * bounds
+				 * bounds, ecpglib will distinguish between * and [] 
 				 */
 				if ((atoi(varcharsize) > 1 ||
 				    (atoi(arrsize) > 0) ||

src/interfaces/ecpg/test/test2.pgc

@@ -65,6 +65,7 @@ exec sql end declare section;
 
 	p=&personal;
 	i=&ind_personal;
+	memset(i, 0, sizeof(ind_personal));
 	while (1) {
 		strcpy(msg, "fetch");
 		exec sql fetch cur into :p:i, :married:ind_married, :children.integer:ind_children.smallint;