mirror of
https://github.com/openvswitch/ovs
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fbf925e45d
It's more elegant, and just as easy to implement, if we allow a "named-uuid" to be a forward reference to a "uuid-name" in a later "insert" operation.
73 lines
2.4 KiB
C
73 lines
2.4 KiB
C
/* Copyright (c) 2009, 2010 Nicira Networks
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef OVSDB_CONDITION_H
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#define OVSDB_CONDITION_H 1
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#include <stddef.h>
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#include "compiler.h"
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#include "ovsdb-data.h"
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struct json;
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struct ovsdb_table_schema;
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struct ovsdb_row;
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/* These list is ordered in ascending order of the fraction of tables row that
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* they are (heuristically) expected to leave in query results. */
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#define OVSDB_FUNCTIONS \
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OVSDB_FUNCTION(OVSDB_F_EQ, "==") \
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OVSDB_FUNCTION(OVSDB_F_INCLUDES, "includes") \
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OVSDB_FUNCTION(OVSDB_F_LE, "<=") \
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OVSDB_FUNCTION(OVSDB_F_LT, "<") \
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OVSDB_FUNCTION(OVSDB_F_GE, ">=") \
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OVSDB_FUNCTION(OVSDB_F_GT, ">") \
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OVSDB_FUNCTION(OVSDB_F_EXCLUDES, "excludes") \
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OVSDB_FUNCTION(OVSDB_F_NE, "!=")
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enum ovsdb_function {
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#define OVSDB_FUNCTION(ENUM, NAME) ENUM,
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OVSDB_FUNCTIONS
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#undef OVSDB_FUNCTION
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};
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struct ovsdb_error *ovsdb_function_from_string(const char *,
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enum ovsdb_function *)
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WARN_UNUSED_RESULT;
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const char *ovsdb_function_to_string(enum ovsdb_function);
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struct ovsdb_clause {
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enum ovsdb_function function;
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const struct ovsdb_column *column;
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struct ovsdb_datum arg;
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};
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struct ovsdb_condition {
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struct ovsdb_clause *clauses;
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size_t n_clauses;
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};
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#define OVSDB_CONDITION_INITIALIZER { NULL, 0 }
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struct ovsdb_error *ovsdb_condition_from_json(
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const struct ovsdb_table_schema *,
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const struct json *, struct ovsdb_symbol_table *,
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struct ovsdb_condition *) WARN_UNUSED_RESULT;
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struct json *ovsdb_condition_to_json(const struct ovsdb_condition *);
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void ovsdb_condition_destroy(struct ovsdb_condition *);
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bool ovsdb_condition_evaluate(const struct ovsdb_row *,
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const struct ovsdb_condition *);
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#endif /* ovsdb/condition.h */
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