Fix Bug #55397 cannot select from innodb_trx when trx_query contains blobs

that aren't strings

rb://560 approved by Sunny Bains

storage/innodb_plugin/ChangeLog

+2011-01-06	The InnoDB Team
+	* handler/i_s.cc, include/trx0i_s.h, trx/trx0i_s.c:
+	Fix Bug#55397 cannot select from innodb_trx when trx_query contains
+	blobs that aren't strings
+
 2011-01-04	The InnoDB Team
 	* dict/dict0dict.c:
 	Fix Bug#59197 double quote in field comment prevents foreign

storage/innodb_plugin/handler/i_s.cc

@@ -371,8 +371,16 @@ fill_innodb_trx_from_cache(
 			   row->trx_mysql_thread_id));
 
 		/* trx_query */
-		OK(field_store_string(fields[IDX_TRX_QUERY],
-				      row->trx_query));
+		if (row->trx_query) {
+			/* store will do appropriate character set
+			conversion check */
+			fields[IDX_TRX_QUERY]->store(
+				row->trx_query, strlen(row->trx_query),
+				row->trx_query_cs);
+			fields[IDX_TRX_QUERY]->set_notnull();
+		} else {
+			fields[IDX_TRX_QUERY]->set_null();
+		}
 
 		OK(schema_table_store_record(thd, table));
 	}

storage/innodb_plugin/include/trx0i_s.h

@@ -110,6 +110,8 @@ struct i_s_trx_row_struct {
 						/*!< thd_get_thread_id() */
 	const char*		trx_query;	/*!< MySQL statement being
 						executed in the transaction */
+	struct charset_info_st*	trx_query_cs;	/*!< charset encode the MySQL
+						statement */
 };
 
 /** This structure represents INFORMATION_SCHEMA.innodb_lock_waits row */

storage/innodb_plugin/trx/trx0i_s.c

@@ -498,7 +498,6 @@ fill_trx_row(
 	stmt = innobase_get_stmt(trx->mysql_thd, &stmt_len);
 
 	if (stmt != NULL) {
-
 		char	query[TRX_I_S_TRX_QUERY_MAX_LEN + 1];
 
 		if (stmt_len > TRX_I_S_TRX_QUERY_MAX_LEN) {
@@ -512,6 +511,8 @@ fill_trx_row(
 			cache->storage, stmt, stmt_len + 1,
 			MAX_ALLOWED_FOR_STORAGE(cache));
 
+		row->trx_query_cs = innobase_get_charset(trx->mysql_thd);
+
 		if (row->trx_query == NULL) {
 
 			return(FALSE);