[libgda] Enable GSEAL to find direct access to GdaNumeric members (no opaque struct)

[Daniel Espinosa Ortiz <despinosa src gnome org>]

commit 0b0232fbde0e6446404e0cac6677aae72b3a18e2
Author: Daniel Espinosa <despinosa src gnome org>
Date:   Mon Nov 14 12:23:17 2011 -0600

    Enable GSEAL to find direct access to GdaNumeric members (no opaque struct)
    
    * make CFLAGS+="-DGSEAL_ENABLE" will fail to compile if direct access to
      GdaNumeric members is intended
    * Fixed internal SQLite and PostgreSQL providers, other providers must be
      fixed too

 libgda/gda-value.c                          |   30 +++++++++++++++++++++++++++
 libgda/gda-value.h                          |    4 ++-
 libgda/sqlite/gda-sqlite-provider.c         |    2 +-
 providers/postgres/gda-postgres-recordset.c |   12 +++++-----
 4 files changed, 40 insertions(+), 8 deletions(-)
---
diff --git a/libgda/gda-value.c b/libgda/gda-value.c
index 44c6f65..a65cb18 100644
--- a/libgda/gda-value.c
+++ b/libgda/gda-value.c
@@ -52,6 +52,35 @@
 #define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
 #endif
 
+
+#  ifdef GSEAL_ENABLE
+/**
+ * GdaNumeric:
+ * @number: a string representing a number
+ * @precision: precision to use when @number is converted (not implemented jet)
+ * @width: (not implemented jet)
+ *
+ * Holds numbers represented as strings.
+ *
+ * This struct must be considered as opaque. Any access to its members must use its
+ * accessors added since version 5.0.2.
+ *
+ * Set value func: gda_value_set_numeric
+ * Get value func: gda_value_get_numeric
+ */
+struct _GdaNumeric {
+	gchar*   number;
+	glong    precision;
+	glong    width;
+	
+	/*< private >*/
+	gpointer reserved; /* reserved for future usage with GMP (http://gmplib.org/) */
+};
+#  else
+#endif
+
+
+
 static gboolean
 set_from_string (GValue *value, const gchar *as_string)
 {
@@ -819,6 +848,7 @@ gda_numeric_get_type (void)
 	return type;
 }
 
+
 /**
  * gda_numeric_copy:
  * @boxed: source to get a copy from.
diff --git a/libgda/gda-value.h b/libgda/gda-value.h
index aeb2892..6673783 100644
--- a/libgda/gda-value.h
+++ b/libgda/gda-value.h
@@ -76,7 +76,8 @@ typedef struct {
 
 
 typedef struct _GdaNumeric GdaNumeric;
-
+# ifdef GSEAL_ENABLE
+# else
 /**
  * GdaNumeric:
  * @number: a string representing a number
@@ -99,6 +100,7 @@ struct _GdaNumeric {
 	/*< private >*/
 	gpointer reserved; /* reserved for future usage with GMP (http://gmplib.org/) */
 };
+#endif
 
 /**
  * GdaTime:
diff --git a/libgda/sqlite/gda-sqlite-provider.c b/libgda/sqlite/gda-sqlite-provider.c
index 90a56d3..aaf9e4e 100644
--- a/libgda/sqlite/gda-sqlite-provider.c
+++ b/libgda/sqlite/gda-sqlite-provider.c
@@ -3245,7 +3245,7 @@ gda_sqlite_provider_statement_execute (GdaServerProvider *provider, GdaConnectio
 			const GdaNumeric *gdan;
 
 			gdan = gda_value_get_numeric (value);
-			SQLITE3_CALL (sqlite3_bind_text) (ps->sqlite_stmt, i, gdan->number, -1, SQLITE_TRANSIENT);
+			SQLITE3_CALL (sqlite3_bind_text) (ps->sqlite_stmt, i, gda_numeric_get_string(gdan), -1, SQLITE_TRANSIENT);
 		}
 		else {
 			gchar *str;
diff --git a/providers/postgres/gda-postgres-recordset.c b/providers/postgres/gda-postgres-recordset.c
index 4fe09e8..0a0229a 100644
--- a/providers/postgres/gda-postgres-recordset.c
+++ b/providers/postgres/gda-postgres-recordset.c
@@ -649,12 +649,12 @@ set_value (GdaConnection *cnc, GdaRow *row, GValue *value, GType type, const gch
 		setlocale (LC_NUMERIC, gda_numeric_locale);
 	}
 	else if (type == GDA_TYPE_NUMERIC) {
-		GdaNumeric numeric;
-		numeric.number = g_strdup (thevalue);
-		numeric.precision = 0; /* FIXME */
-		numeric.width = 0; /* FIXME */
-		gda_value_set_numeric (value, &numeric);
-		g_free (numeric.number);
+		GdaNumeric* numeric = gda_numeric_new ();
+		gda_numeric_set_from_string (numeric, thevalue);
+		gda_numeric_set_precision (numeric, 0); /* FIXME */
+		gda_numeric_set_width (numeric, 0); /* FIXME */
+		gda_value_set_numeric (value, numeric);
+		gda_numeric_free (numeric);
 	}
 	else if (type == GDA_TYPE_GEOMETRIC_POINT) {
 		GdaGeometricPoint point;