mirror of https://gitee.com/bigwinds/arangodb
70 lines
2.9 KiB
C
70 lines
2.9 KiB
C
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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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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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Jan Steemann
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGODB_BASICS_JSON__UTILITIES_H
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#define ARANGODB_BASICS_JSON__UTILITIES_H 1
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#include "Basics/Common.h"
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#include "Basics/json.h"
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////////////////////////////////////////////////////////////////////////////////
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/// @brief compare two json values
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///
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/// the values are first compared by their types, and only by their values if
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/// the types are the same
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/// returns -1 if lhs is smaller than rhs, 0 if lhs == rhs, and 1 if rhs is
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/// greater than lhs.
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///
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/// If useUTF8 is set to true, strings will be converted using proper UTF8,
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/// otherwise, strcmp is used, so it should only be used to test for equality
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/// in this case.
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////////////////////////////////////////////////////////////////////////////////
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int TRI_CompareValuesJson(TRI_json_t const*, TRI_json_t const*,
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bool useUTF8 = true);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief merge two JSON documents into one
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////////////////////////////////////////////////////////////////////////////////
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TRI_json_t* TRI_MergeJson(TRI_memory_zone_t*, TRI_json_t const*,
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TRI_json_t const*, bool, bool);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief compute a hash value for a JSON document, using fasthash64.
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/// This is slightly faster than the FNV-based hashing
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////////////////////////////////////////////////////////////////////////////////
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uint64_t TRI_FastHashJson(TRI_json_t const* json);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief compute a hash value for a JSON document depending on a list
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/// of attributes.
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////////////////////////////////////////////////////////////////////////////////
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uint64_t TRI_HashJsonByAttributes(TRI_json_t const* json,
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char const* attributes[], int nrAttributes,
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bool docComplete, int& error);
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#endif
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