1 /* Copyright (c) 2009, 2010 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_TYPES_H 1
28 /* An atomic type: one that OVSDB regards as a single unit of data. */
29 enum ovsdb_atomic_type {
30 OVSDB_TYPE_VOID, /* No value. */
31 OVSDB_TYPE_INTEGER, /* Signed 64-bit integer. */
32 OVSDB_TYPE_REAL, /* IEEE 754 double-precision floating point. */
33 OVSDB_TYPE_BOOLEAN, /* True or false. */
34 OVSDB_TYPE_STRING, /* UTF-8 string. */
35 OVSDB_TYPE_UUID, /* RFC 4122 UUID referencing a table row. */
39 static inline bool ovsdb_atomic_type_is_valid(enum ovsdb_atomic_type);
40 bool ovsdb_atomic_type_from_string(const char *, enum ovsdb_atomic_type *);
41 struct ovsdb_error *ovsdb_atomic_type_from_json(enum ovsdb_atomic_type *,
43 const char *ovsdb_atomic_type_to_string(enum ovsdb_atomic_type);
44 struct json *ovsdb_atomic_type_to_json(enum ovsdb_atomic_type);
46 /* An atomic type plus optional constraints. */
48 struct ovsdb_base_type {
49 enum ovsdb_atomic_type type;
51 struct ovsdb_integer_constraints {
52 int64_t min; /* minInteger or INT64_MIN. */
53 int64_t max; /* maxInteger or INT64_MAX. */
56 struct ovsdb_real_constraints {
57 double min; /* minReal or -DBL_MAX. */
58 double max; /* minReal or DBL_MAX. */
61 /* No constraints for Boolean types. */
63 struct ovsdb_string_constraints {
64 pcre *re; /* Compiled regular expression. */
65 char *reMatch; /* reMatch or NULL. */
66 char *reComment; /* reComment or NULL. */
67 unsigned int minLen; /* minLength or 0. */
68 unsigned int maxLen; /* maxLength or UINT_MAX. */
73 #define OVSDB_BASE_VOID_INIT { .type = OVSDB_TYPE_VOID }
74 #define OVSDB_BASE_INTEGER_INIT { .type = OVSDB_TYPE_INTEGER, \
75 .u.integer = { INT64_MIN, INT64_MAX } }
76 #define OVSDB_BASE_REAL_INIT { .type = OVSDB_TYPE_REAL, \
77 .u.real = { -DBL_MAX, DBL_MAX } }
78 #define OVSDB_BASE_BOOLEAN_INIT { .type = OVSDB_TYPE_BOOLEAN }
79 #define OVSDB_BASE_STRING_INIT { .type = OVSDB_TYPE_STRING, \
80 .u.string = { NULL, NULL, NULL, \
82 #define OVSDB_BASE_UUID_INIT { .type = OVSDB_TYPE_UUID }
84 void ovsdb_base_type_init(struct ovsdb_base_type *, enum ovsdb_atomic_type);
85 void ovsdb_base_type_clone(struct ovsdb_base_type *,
86 const struct ovsdb_base_type *);
87 void ovsdb_base_type_destroy(struct ovsdb_base_type *);
89 bool ovsdb_base_type_is_valid(const struct ovsdb_base_type *);
90 bool ovsdb_base_type_has_constraints(const struct ovsdb_base_type *);
91 void ovsdb_base_type_clear_constraints(struct ovsdb_base_type *);
92 struct ovsdb_error *ovsdb_base_type_set_regex(struct ovsdb_base_type *,
94 const char *reComment)
97 struct ovsdb_error *ovsdb_base_type_from_json(struct ovsdb_base_type *,
100 struct json *ovsdb_base_type_to_json(const struct ovsdb_base_type *);
104 * Several rules constrain the valid types. See ovsdb_type_is_valid() (in
105 * ovsdb-types.c) for details.
107 * If 'value_type' is OVSDB_TYPE_VOID, 'n_min' is 1, and 'n_max' is 1, then the
108 * type is a single atomic 'key_type'.
110 * If 'value_type' is OVSDB_TYPE_VOID and 'n_min' or 'n_max' (or both) has a
111 * value other than 1, then the type is a set of 'key_type'. If 'n_min' is 0
112 * and 'n_max' is 1, then the type can also be considered an optional
115 * If 'value_type' is not OVSDB_TYPE_VOID, then the type is a map from
116 * 'key_type' to 'value_type'. If 'n_min' is 0 and 'n_max' is 1, then the type
117 * can also be considered an optional pair of 'key_type' and 'value_type'.
120 struct ovsdb_base_type key;
121 struct ovsdb_base_type value;
123 unsigned int n_max; /* UINT_MAX stands in for "unlimited". */
126 #define OVSDB_TYPE_SCALAR_INITIALIZER(KEY) { KEY, OVSDB_BASE_VOID_INIT, 1, 1 }
128 extern const struct ovsdb_type ovsdb_type_integer;
129 extern const struct ovsdb_type ovsdb_type_real;
130 extern const struct ovsdb_type ovsdb_type_boolean;
131 extern const struct ovsdb_type ovsdb_type_string;
132 extern const struct ovsdb_type ovsdb_type_uuid;
134 void ovsdb_type_clone(struct ovsdb_type *, const struct ovsdb_type *);
135 void ovsdb_type_destroy(struct ovsdb_type *);
137 bool ovsdb_type_is_valid(const struct ovsdb_type *);
139 static inline bool ovsdb_type_is_scalar(const struct ovsdb_type *);
140 static inline bool ovsdb_type_is_optional(const struct ovsdb_type *);
141 static inline bool ovsdb_type_is_composite(const struct ovsdb_type *);
142 static inline bool ovsdb_type_is_set(const struct ovsdb_type *);
143 static inline bool ovsdb_type_is_map(const struct ovsdb_type *);
145 char *ovsdb_type_to_english(const struct ovsdb_type *);
147 struct ovsdb_error *ovsdb_type_from_json(struct ovsdb_type *,
150 struct json *ovsdb_type_to_json(const struct ovsdb_type *);
152 /* Inline function implementations. */
155 ovsdb_atomic_type_is_valid(enum ovsdb_atomic_type atomic_type)
157 return atomic_type >= 0 && atomic_type < OVSDB_N_TYPES;
160 static inline bool ovsdb_type_is_scalar(const struct ovsdb_type *type)
162 return (type->value.type == OVSDB_TYPE_VOID
163 && type->n_min == 1 && type->n_max == 1);
166 static inline bool ovsdb_type_is_optional(const struct ovsdb_type *type)
168 return type->n_min == 0;
171 static inline bool ovsdb_type_is_composite(const struct ovsdb_type *type)
173 return type->n_max > 1;
176 static inline bool ovsdb_type_is_set(const struct ovsdb_type *type)
178 return (type->value.type == OVSDB_TYPE_VOID
179 && (type->n_min != 1 || type->n_max != 1));
182 static inline bool ovsdb_type_is_map(const struct ovsdb_type *type)
184 return type->value.type != OVSDB_TYPE_VOID;
187 #endif /* ovsdb-types.h */