mirror of https://gitee.com/bigwinds/arangodb
163 lines
5.9 KiB
C
163 lines
5.9 KiB
C
////////////////////////////////////////////////////////////////////////////////
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/// @brief result set
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2011 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 triAGENS GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Copyright 2011-2010, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef TRIAGENS_DURHAM_VOCBASE_RESULT_SET_H
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#define TRIAGENS_DURHAM_VOCBASE_RESULT_SET_H 1
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#include <VocBase/vocbase.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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// -----------------------------------------------------------------------------
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// --SECTION-- forward declarations
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// -----------------------------------------------------------------------------
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struct TRI_doc_collection_s;
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struct TRI_doc_mptr_s;
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struct TRI_json_s;
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struct TRI_shaped_json_s;
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// -----------------------------------------------------------------------------
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// --SECTION-- public types
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup VocBase VocBase
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief an identifier for result sets
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////////////////////////////////////////////////////////////////////////////////
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typedef TRI_voc_tick_t TRI_rs_id_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief information about the execution
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_rs_info_s {
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char* _cursor;
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TRI_voc_size_t _scannedIndexEntries;
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TRI_voc_size_t _scannedDocuments;
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TRI_voc_size_t _matchedDocuments;
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double _runtime;
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}
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TRI_rs_info_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief a result set container for all result sets of a collection
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_rs_container_s {
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TRI_associative_synced_t _resultSets;
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struct TRI_doc_collection_s* _collection;
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}
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TRI_rs_container_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief a result set
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_result_set_s {
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TRI_rs_id_t _id;
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TRI_rs_container_t* _container;
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TRI_rs_info_t _info;
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char* _error;
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bool (*hasNext) (struct TRI_result_set_s*);
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struct TRI_shaped_json_s* (*next) (struct TRI_result_set_s*, TRI_voc_did_t*, struct TRI_json_s const**);
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TRI_voc_size_t (*count) (struct TRI_result_set_s*, bool current);
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void (*free) (struct TRI_result_set_s*);
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}
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TRI_result_set_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- public functions
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup VocBase VocBase
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief initialises a result set container
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////////////////////////////////////////////////////////////////////////////////
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void TRI_InitRSContainer (TRI_rs_container_t*, struct TRI_doc_collection_s*);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroys a result set container
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////////////////////////////////////////////////////////////////////////////////
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void TRI_DestroyRSContainer (TRI_rs_container_t*);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief creates a single result set
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////////////////////////////////////////////////////////////////////////////////
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TRI_result_set_t* TRI_CreateRSSingle (struct TRI_doc_collection_s* collection,
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struct TRI_doc_mptr_s const* header,
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TRI_voc_size_t total);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief creates a full result set
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////////////////////////////////////////////////////////////////////////////////
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TRI_result_set_t* TRI_CreateRSVector (struct TRI_doc_collection_s* collection,
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struct TRI_doc_mptr_s const** header,
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struct TRI_json_s const* augmented,
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TRI_voc_size_t length,
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TRI_voc_size_t total);
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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#ifdef __cplusplus
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}
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#endif
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#endif
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// Local Variables:
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// mode: outline-minor
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// outline-regexp: "^\\(/// @brief\\|/// @addtogroup\\|// --SECTION--\\)"
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// End:
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