Added new features to the MyDDAS Interface, including some statistical support

git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1483 b08c6af1-5177-4d33-ba66-4b1c6b8b522a

MYDDAS/myddas_structs.h

@@ -0,0 +1,71 @@
+#ifndef __MYDDAS_STRUCTS_H__
+#define __MYDDAS_STRUCTS_H__
+
+struct myddas_global {
+  MYDDAS_UTIL_CONNECTION myddas_top_connections;
+#ifdef MYDDAS_STATS
+  MYDDAS_GLOBAL_STATS myddas_statistics;
+#endif
+};
+
+struct myddas_table_integers {
+  unsigned int number;
+  struct myddas_table_integers *next;
+};
+
+struct myddas_temp_tables{
+  struct myddas_table_integers *table_numbers;
+  struct myddas_table_integers *last_number;
+  char *default_table_name;
+};
+
+#ifdef MYDDAS_STATS
+/* This strucuture holds some global statistics*/
+struct myddas_global_stats {
+  unsigned long total_db_row;
+};
+#endif /* MYDDAS_STATS */
+
+struct list_preds {
+  char *pred_module;
+  char *pred_name;
+  short pred_arity;
+  struct list_preds *next;
+};
+
+struct list_connection {
+  void *connection;
+  MYDDAS_TEMP_TABLES temporary_tables;
+  
+  /*If variable env is NULL, then it's a 
+    MySQL connection, if not then it as the pointer 
+    to the ODBC enviromment variable */
+  void *odbc_enviromment;
+#ifdef MYDDAS_STATS
+  /* Total number of Rows returnes from the DataBase Server */
+  unsigned long totalNumberOfRows;
+  
+  /* Total Time spent by the DataBase Server
+     processing all querys */
+  unsigned long totalTimeofDBServer; 
+  /* Time spent by the DataBase Server, processing
+     the last query */
+  unsigned long lastTimeofDBServer;
+  
+  /* Total Time spent by the DataBase Server,
+     transfering all the data to the client */
+  unsigned long totalFromDBServer; 
+  /* Time spent by the DataBase Server, 
+     transfering the data of the last query */
+  unsigned long lastFromDBServer; 
+  
+  /* Total Time spent on the db_row function */
+  unsigned long total_db_row;
+#endif
+  MYDDAS_UTIL_PREDICATE predicates;
+  struct list_connection *next;
+};
+
+
+
+#endif