mirror of https://gitee.com/bigwinds/arangodb
145 lines
4.4 KiB
C
145 lines
4.4 KiB
C
////////////////////////////////////////////////////////////////////////////////
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/// @brief joins
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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 2010-2012 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 Jan Steemann
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/// @author Copyright 2012, triagens GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef TRIAGENS_DURHAM_VOC_BASE_JOIN_H
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#define TRIAGENS_DURHAM_VOC_BASE_JOIN_H 1
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#include <BasicsC/common.h>
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#include <BasicsC/vector.h>
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#include <BasicsC/strings.h>
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#include "VocBase/query-where.h"
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#include "VocBase/query-context.h"
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#include "VocBase/query-data-feeder.h"
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#include "VocBase/query-result-types.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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/// @addtogroup VocBase
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Maximum number of joins in one query
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////////////////////////////////////////////////////////////////////////////////
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#define QUERY_MAX_JOINS (16)
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////////////////////////////////////////////////////////////////////////////////
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/// @brief possible join types
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////////////////////////////////////////////////////////////////////////////////
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typedef enum {
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JOIN_TYPE_PRIMARY,
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JOIN_TYPE_INNER,
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JOIN_TYPE_OUTER,
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JOIN_TYPE_LIST
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}
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TRI_join_type_e;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief join data structure
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_join_part_s {
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TRI_data_feeder_t *_feeder; // data source
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TRI_join_type_e _type;
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QL_ast_query_where_t* _where;
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TRI_vector_pointer_t* _ranges;
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TRI_vocbase_col_t* _collection;
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char* _collectionName;
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char* _alias;
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struct {
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bool _select;
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bool _where;
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bool _order;
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bool _join;
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} _mustMaterialize;
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QL_ast_query_geo_restriction_t* _geoRestriction;
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TRI_doc_mptr_t* _singleDocument;
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TRI_vector_pointer_t _listDocuments;
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struct {
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size_t _size;
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char* _alias;
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void* _singleValue;
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TRI_vector_pointer_t _listValues;
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} _extraData;
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TRI_js_exec_context_t _context;
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void (*free) (struct TRI_join_part_s*);
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}
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TRI_join_part_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief join container data structure for select queries - DEPRECATED
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_select_join_s {
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TRI_vector_pointer_t _parts;
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TRI_vocbase_t* _vocbase;
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void (*free) (struct TRI_select_join_s*);
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}
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TRI_select_join_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Add a part to a select join - DEPRECATED
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////////////////////////////////////////////////////////////////////////////////
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bool TRI_AddPartSelectJoinX (TRI_select_join_t*,
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const TRI_join_type_e,
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TRI_vector_pointer_t*,
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char*,
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char*,
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QL_ast_query_geo_restriction_t*);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Create a new join - DEPRECATED
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////////////////////////////////////////////////////////////////////////////////
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TRI_select_join_t* TRI_CreateSelectJoin (void);
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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\\|/// {@inheritDoc}\\|/// @addtogroup\\|// --SECTION--\\|/// @\\}\\)"
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// End:
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