Update the mysql driver to always return NULL columns, as this is needed for the...

(closes issue #16138)
 Reported by: sohosys
 Patches:
       20091029__issue16138.diff.txt uploaded by tilghman (license 14)
 Tested by: sohosys

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@233050 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/addons/res_config_mysql.c b/addons/res_config_mysql.c
index 273114c..c68c29d 100644 (file)
--- a/addons/res_config_mysql.c
+++ b/addons/res_config_mysql.c
@@ -367,12 +367,13 @@ static struct ast_variable *realtime_mysql(const char *database, const char *tab
 
                while ((row = mysql_fetch_row(result))) {
                        for (i = 0; i < numFields; i++) {
-                               if (ast_strlen_zero(row[i]))
-                                       continue;
+                               /* Encode NULL values separately from blank values, for the Realtime API */
+                               if (row[i] == NULL) {
+                                       row[i] = "";
+                               } else if (ast_strlen_zero(row[i])) {
+                                       row[i] = " ";
+                               }
                                for (stringp = ast_strdupa(row[i]), chunk = strsep(&stringp, ";"); chunk; chunk = strsep(&stringp, ";")) {
-                                       if (!chunk || ast_strlen_zero(ast_strip(chunk))) {
-                                               continue;
-                                       }
                                        if (prev) {
                                                if ((prev->next = ast_variable_new(fields[i].name, chunk, ""))) {
                                                        prev = prev->next;