1 /* Copyright (c) 2009 Nicira Networks
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
17 #define OVSDB_DATA_H 1
21 #include "ovsdb-types.h"
23 struct ovsdb_symbol_table;
25 /* One value of an atomic type (given by enum ovs_atomic_type). */
34 void ovsdb_atom_init_default(union ovsdb_atom *, enum ovsdb_atomic_type);
35 void ovsdb_atom_clone(union ovsdb_atom *, const union ovsdb_atom *,
36 enum ovsdb_atomic_type);
37 void ovsdb_atom_swap(union ovsdb_atom *, union ovsdb_atom *);
40 ovsdb_atom_needs_destruction(enum ovsdb_atomic_type type)
42 return type == OVSDB_TYPE_STRING;
46 ovsdb_atom_destroy(union ovsdb_atom *atom, enum ovsdb_atomic_type type)
48 if (type == OVSDB_TYPE_STRING) {
53 uint32_t ovsdb_atom_hash(const union ovsdb_atom *, enum ovsdb_atomic_type,
56 int ovsdb_atom_compare_3way(const union ovsdb_atom *,
57 const union ovsdb_atom *,
58 enum ovsdb_atomic_type);
60 static inline bool ovsdb_atom_equals(const union ovsdb_atom *a,
61 const union ovsdb_atom *b,
62 enum ovsdb_atomic_type type)
64 return !ovsdb_atom_compare_3way(a, b, type);
67 struct ovsdb_error *ovsdb_atom_from_json(union ovsdb_atom *,
68 enum ovsdb_atomic_type,
70 const struct ovsdb_symbol_table *)
72 struct json *ovsdb_atom_to_json(const union ovsdb_atom *,
73 enum ovsdb_atomic_type);
75 /* One value of an OVSDB type (given by struct ovsdb_type). */
77 unsigned int n; /* Number of 'keys' and 'values'. */
78 union ovsdb_atom *keys; /* Each of the ovsdb_type's 'key_type'. */
79 union ovsdb_atom *values; /* Each of the ovsdb_type's 'value_type'. */
82 void ovsdb_datum_init_default(struct ovsdb_datum *, const struct ovsdb_type *);
83 void ovsdb_datum_clone(struct ovsdb_datum *, const struct ovsdb_datum *,
84 const struct ovsdb_type *);
85 void ovsdb_datum_destroy(struct ovsdb_datum *, const struct ovsdb_type *);
86 void ovsdb_datum_swap(struct ovsdb_datum *, struct ovsdb_datum *);
88 struct ovsdb_error *ovsdb_datum_from_json(struct ovsdb_datum *,
89 const struct ovsdb_type *,
91 const struct ovsdb_symbol_table *)
93 struct json *ovsdb_datum_to_json(const struct ovsdb_datum *,
94 const struct ovsdb_type *);
96 uint32_t ovsdb_datum_hash(const struct ovsdb_datum *,
97 const struct ovsdb_type *, uint32_t basis);
98 int ovsdb_datum_compare_3way(const struct ovsdb_datum *,
99 const struct ovsdb_datum *,
100 const struct ovsdb_type *);
101 bool ovsdb_datum_equals(const struct ovsdb_datum *,
102 const struct ovsdb_datum *,
103 const struct ovsdb_type *);
104 bool ovsdb_datum_includes_all(const struct ovsdb_datum *,
105 const struct ovsdb_datum *,
106 const struct ovsdb_type *);
107 bool ovsdb_datum_excludes_all(const struct ovsdb_datum *,
108 const struct ovsdb_datum *,
109 const struct ovsdb_type *);
112 ovsdb_datum_conforms_to_type(const struct ovsdb_datum *datum,
113 const struct ovsdb_type *type)
115 return datum->n >= type->n_min && datum->n <= type->n_max;
118 /* A table mapping from names to data items. Currently the data items are
119 * always UUIDs; perhaps this will be expanded in the future. */
121 struct ovsdb_symbol_table *ovsdb_symbol_table_create(void);
122 void ovsdb_symbol_table_destroy(struct ovsdb_symbol_table *);
123 const struct uuid *ovsdb_symbol_table_get(const struct ovsdb_symbol_table *,
125 void ovsdb_symbol_table_put(struct ovsdb_symbol_table *, const char *name,
126 const struct uuid *);
128 #endif /* ovsdb-data.h */