When calling the Realtime app more than once, unset fields which were

previously set are erroneously still set (Bug 6701).  After discussion,
it was determined this should only be changed in trunk.


git-svn-id: http://svn.digium.com/svn/asterisk/trunk@49801 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 12 insertions, 10 deletions

diff --git a/res/res_config_odbc.c b/res/res_config_odbc.c
index 3ef3edd33..5c725a0e1 100644
--- a/res/res_config_odbc.c
+++ b/res/res_config_odbc.c
@@ -168,7 +168,12 @@ static struct ast_variable *realtime_odbc(const char *database, const char *tabl
 		indicator = 0;
 		res = SQLGetData(stmt, x + 1, SQL_CHAR, rowdata, sizeof(rowdata), &indicator);
 		if (indicator == SQL_NULL_DATA)
-			continue;
+			rowdata[0] = '\0';
+		else if (ast_strlen_zero(rowdata)) {
+			/* Because we encode the empty string for a NULL, we will encode
+			 * actual empty strings as a string containing a single whitespace. */
+			ast_copy_string(rowdata, " ", sizeof(rowdata));
+		}
 
 		if ((res != SQL_SUCCESS) && (res != SQL_SUCCESS_WITH_INFO)) {
 			ast_log(LOG_WARNING, "SQL Get Data error!\n[%s]\n\n", sql);
@@ -180,15 +185,12 @@ static struct ast_variable *realtime_odbc(const char *database, const char *tabl
 		stringp = rowdata;
 		while(stringp) {
 			chunk = strsep(&stringp, ";");
-			if (!ast_strlen_zero(ast_strip(chunk))) {
-				if (prev) {
-					prev->next = ast_variable_new(coltitle, chunk);
-					if (prev->next)
-						prev = prev->next;
-					} else 
-						prev = var = ast_variable_new(coltitle, chunk);
-					
-			}
+			if (prev) {
+				prev->next = ast_variable_new(coltitle, chunk);
+				if (prev->next)
+					prev = prev->next;
+			} else 
+				prev = var = ast_variable_new(coltitle, chunk);
 		}
 	}