lib: add monitor_cond_change API to C IDL lib

[cascardo/ovs.git] / ovsdb / condition.h

diff --git a/ovsdb/condition.h b/ovsdb/condition.h
index 4716150..c794966 100644 (file)
--- a/ovsdb/condition.h
+++ b/ovsdb/condition.h
@@ -1,4 +1,4 @@
-/* Copyright (c) 2009, 2010 Nicira Networks
+/* Copyright (c) 2009, 2010 Nicira, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,54 +19,60 @@
 #include <stddef.h>
 #include "compiler.h"
 #include "ovsdb-data.h"
+#include "bitmap.h"
+#include "ovsdb-condition.h"
 
 struct json;
 struct ovsdb_table_schema;
 struct ovsdb_row;
 
-/* These list is ordered in ascending order of the fraction of tables row that
- * they are (heuristically) expected to leave in query results. */
-#define OVSDB_FUNCTIONS                         \
-    OVSDB_FUNCTION(OVSDB_F_EQ, "==")                  \
-    OVSDB_FUNCTION(OVSDB_F_INCLUDES, "includes")      \
-    OVSDB_FUNCTION(OVSDB_F_LE, "<=")                  \
-    OVSDB_FUNCTION(OVSDB_F_LT, "<")                   \
-    OVSDB_FUNCTION(OVSDB_F_GE, ">=")                  \
-    OVSDB_FUNCTION(OVSDB_F_GT, ">")                   \
-    OVSDB_FUNCTION(OVSDB_F_EXCLUDES, "excludes")      \
-    OVSDB_FUNCTION(OVSDB_F_NE, "!=")
-
-enum ovsdb_function {
-#define OVSDB_FUNCTION(ENUM, NAME) ENUM,
-    OVSDB_FUNCTIONS
-#undef OVSDB_FUNCTION
-};
-
-struct ovsdb_error *ovsdb_function_from_string(const char *,
-                                               enum ovsdb_function *)
-    WARN_UNUSED_RESULT;
-const char *ovsdb_function_to_string(enum ovsdb_function);
-
 struct ovsdb_clause {
     enum ovsdb_function function;
     const struct ovsdb_column *column;
+    unsigned int index;
     struct ovsdb_datum arg;
 };
 
 struct ovsdb_condition {
     struct ovsdb_clause *clauses;
     size_t n_clauses;
+    bool optimized;
+    struct shash o_columns;
 };
 
-#define OVSDB_CONDITION_INITIALIZER { NULL, 0 }
+#define OVSDB_CONDITION_INITIALIZER(COND) \
+    { NULL, 0, true, SHASH_INITIALIZER(&(COND)->o_columns)}
 
+void ovsdb_condition_init(struct ovsdb_condition *);
+bool ovsdb_condition_empty(const struct ovsdb_condition *);
 struct ovsdb_error *ovsdb_condition_from_json(
     const struct ovsdb_table_schema *,
     const struct json *, struct ovsdb_symbol_table *,
-    struct ovsdb_condition *) WARN_UNUSED_RESULT;
+    struct ovsdb_condition *) OVS_WARN_UNUSED_RESULT;
 struct json *ovsdb_condition_to_json(const struct ovsdb_condition *);
 void ovsdb_condition_destroy(struct ovsdb_condition *);
-bool ovsdb_condition_evaluate(const struct ovsdb_row *,
-                              const struct ovsdb_condition *);
+bool ovsdb_condition_match_every_clause(const struct ovsdb_row *,
+                                        const struct ovsdb_condition *);
+bool ovsdb_condition_match_any_clause(const struct ovsdb_datum *,
+                                      const struct ovsdb_condition *,
+                                      unsigned int index_map[]);
+int ovsdb_condition_cmp_3way(const struct ovsdb_condition *a,
+                             const struct ovsdb_condition *b);
+void ovsdb_condition_clone(struct ovsdb_condition *to,
+                           const struct ovsdb_condition *from);
+bool ovsdb_condition_is_true(const struct ovsdb_condition *cond);
+bool ovsdb_condition_is_false(const struct ovsdb_condition *cond);
+const struct ovsdb_column **
+ovsdb_condition_get_columns(const struct ovsdb_condition *cond,
+                            size_t *n_columns);
+
+static inline bool
+ovsdb_condition_empty_or_match_any(const struct ovsdb_datum *row_datum,
+                                   const struct ovsdb_condition *cnd,
+                                   unsigned int index_map[])
+{
+    return (ovsdb_condition_empty(cnd) ||
+            ovsdb_condition_match_any_clause(row_datum, cnd, index_map));
+}
 
 #endif /* ovsdb/condition.h */