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       1                 :            : /* Copyright (c) 2009, 2010 Nicira, Inc.
       2                 :            :  *
       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:
       6                 :            :  *
       7                 :            :  *     http://www.apache.org/licenses/LICENSE-2.0
       8                 :            :  *
       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.
      14                 :            :  */
      15                 :            : 
      16                 :            : #ifndef OVSDB_CONDITION_H
      17                 :            : #define OVSDB_CONDITION_H 1
      18                 :            : 
      19                 :            : #include <stddef.h>
      20                 :            : #include "compiler.h"
      21                 :            : #include "ovsdb-data.h"
      22                 :            : #include "bitmap.h"
      23                 :            : #include "ovsdb-condition.h"
      24                 :            : 
      25                 :            : struct json;
      26                 :            : struct ovsdb_table_schema;
      27                 :            : struct ovsdb_row;
      28                 :            : 
      29                 :            : struct ovsdb_clause {
      30                 :            :     enum ovsdb_function function;
      31                 :            :     const struct ovsdb_column *column;
      32                 :            :     unsigned int index;
      33                 :            :     struct ovsdb_datum arg;
      34                 :            : };
      35                 :            : 
      36                 :            : struct ovsdb_condition {
      37                 :            :     struct ovsdb_clause *clauses;
      38                 :            :     size_t n_clauses;
      39                 :            :     bool optimized;
      40                 :            :     struct shash o_columns;
      41                 :            : };
      42                 :            : 
      43                 :            : #define OVSDB_CONDITION_INITIALIZER(COND) \
      44                 :            :     { NULL, 0, true, SHASH_INITIALIZER(&(COND)->o_columns)}
      45                 :            : 
      46                 :            : void ovsdb_condition_init(struct ovsdb_condition *);
      47                 :            : bool ovsdb_condition_empty(const struct ovsdb_condition *);
      48                 :            : struct ovsdb_error *ovsdb_condition_from_json(
      49                 :            :     const struct ovsdb_table_schema *,
      50                 :            :     const struct json *, struct ovsdb_symbol_table *,
      51                 :            :     struct ovsdb_condition *) OVS_WARN_UNUSED_RESULT;
      52                 :            : struct json *ovsdb_condition_to_json(const struct ovsdb_condition *);
      53                 :            : void ovsdb_condition_destroy(struct ovsdb_condition *);
      54                 :            : bool ovsdb_condition_match_every_clause(const struct ovsdb_row *,
      55                 :            :                                         const struct ovsdb_condition *);
      56                 :            : bool ovsdb_condition_match_any_clause(const struct ovsdb_datum *,
      57                 :            :                                       const struct ovsdb_condition *,
      58                 :            :                                       unsigned int index_map[]);
      59                 :            : int ovsdb_condition_cmp_3way(const struct ovsdb_condition *a,
      60                 :            :                              const struct ovsdb_condition *b);
      61                 :            : void ovsdb_condition_clone(struct ovsdb_condition *to,
      62                 :            :                            const struct ovsdb_condition *from);
      63                 :            : bool ovsdb_condition_is_true(const struct ovsdb_condition *cond);
      64                 :            : bool ovsdb_condition_is_false(const struct ovsdb_condition *cond);
      65                 :            : const struct ovsdb_column **
      66                 :            : ovsdb_condition_get_columns(const struct ovsdb_condition *cond,
      67                 :            :                             size_t *n_columns);
      68                 :            : 
      69                 :            : static inline bool
      70                 :     164523 : ovsdb_condition_empty_or_match_any(const struct ovsdb_datum *row_datum,
      71                 :            :                                    const struct ovsdb_condition *cnd,
      72                 :            :                                    unsigned int index_map[])
      73                 :            : {
      74   [ +  +  +  + ]:     164852 :     return (ovsdb_condition_empty(cnd) ||
      75                 :        329 :             ovsdb_condition_match_any_clause(row_datum, cnd, index_map));
      76                 :            : }
      77                 :            : 
      78                 :            : #endif /* ovsdb/condition.h */