mirror of https://gitee.com/bigwinds/arangodb
196 lines
7.2 KiB
C
Executable File
196 lines
7.2 KiB
C
Executable File
////////////////////////////////////////////////////////////////////////////////
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/// @brief unique hash index
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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 by triAGENS GmbH - All rights reserved.
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///
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/// The Programs (which include both the software and documentation)
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/// contain proprietary information of triAGENS GmbH; they are
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/// provided under a license agreement containing restrictions on use and
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/// disclosure and are also protected by copyright, patent and other
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/// intellectual and industrial property laws. Reverse engineering,
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/// disassembly or decompilation of the Programs, except to the extent
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/// required to obtain interoperability with other independently created
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/// software or as specified by law, is prohibited.
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///
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/// The Programs are not intended for use in any nuclear, aviation, mass
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/// transit, medical, or other inherently dangerous applications. It shall
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/// be the licensee's responsibility to take all appropriate fail-safe,
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/// backup, redundancy, and other measures to ensure the safe use of such
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/// applications if the Programs are used for such purposes, and triAGENS
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/// GmbH disclaims liability for any damages caused by such use of
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/// the Programs.
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///
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/// This software is the confidential and proprietary information of
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/// triAGENS GmbH. You shall not disclose such confidential and
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/// proprietary information and shall use it only in accordance with the
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/// terms of the license agreement you entered into with triAGENS GmbH.
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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. O
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/// @author Copyright 2011, triagens GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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#ifndef TRIAGENS_DURHAM_VOC_BASE_SKIPLIST_INDEX_H
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#define TRIAGENS_DURHAM_VOC_BASE_SKIPLIST_INDEX_H 1
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#include <BasicsC/common.h>
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#include "SkipLists/skiplist.h"
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#include "SkipLists/sl-operator.h"
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#include "ShapedJson/shaped-json.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-- skiplistIndex public types
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup skiplistIndex
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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typedef struct {
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union {
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TRI_skiplist_t* uniqueSkiplist;
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TRI_skiplist_multi_t* nonUniqueSkiplist;
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} skiplist;
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bool unique;
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} SkiplistIndex;
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typedef struct {
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size_t numFields; // the number of fields
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TRI_shaped_json_t* fields; // list of shaped json objects which the collection should know about
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void* data; // master document pointer
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void* collection; // pointer to the collection;
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} SkiplistIndexElement;
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typedef struct {
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size_t _numElements;
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SkiplistIndexElement* _elements; // simple list of elements
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} SkiplistIndexElements;
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Iterator structure for skip list. We require a start and stop node
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////////////////////////////////////////////////////////////////////////////////
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typedef struct TRI_skiplist_iterator_interval_s {
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void* _leftEndPoint;
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void* _rightEndPoint;
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} TRI_skiplist_iterator_interval_t;
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typedef struct TRI_skiplist_iterator_s {
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SkiplistIndex* _index;
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TRI_vector_t _intervals;
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size_t _currentInterval; // starts with 0
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void* _cursor; // initially null
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bool (*_hasNext) (struct TRI_skiplist_iterator_s*);
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void* (*_next) (struct TRI_skiplist_iterator_s*);
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void* (*_nexts) (struct TRI_skiplist_iterator_s*, int64_t jumpSize);
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bool (*_hasPrev) (struct TRI_skiplist_iterator_s*);
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void* (*_prev) (struct TRI_skiplist_iterator_s*);
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void* (*_prevs) (struct TRI_skiplist_iterator_s*, int64_t jumpSize);
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} TRI_skiplist_iterator_t;
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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// -----------------------------------------------------------------------------
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// --SECTION-- skiplistIndex public methods
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// -----------------------------------------------------------------------------
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////////////////////////////////////////////////////////////////////////////////
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/// @addtogroup skiplistIndex
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/// @{
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Free a skiplist iterator
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////////////////////////////////////////////////////////////////////////////////
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void TRI_FreeSkiplistIterator (TRI_skiplist_iterator_t* const);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroys a skip list index , but does not free the pointer
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////////////////////////////////////////////////////////////////////////////////
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void SkiplistIndex_destroy (SkiplistIndex*);
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////////////////////////////////////////////////////////////////////////////////
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/// @brief destroys a skip list index and frees the pointer
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////////////////////////////////////////////////////////////////////////////////
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void SkiplistIndex_free (SkiplistIndex*);
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////////////////////////////////////////////////////////////////////////////////
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/// @}
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////////////////////////////////////////////////////////////////////////////////
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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// Unique skiplist indexes
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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SkiplistIndex* SkiplistIndex_new (void);
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int SkiplistIndex_add (SkiplistIndex*, SkiplistIndexElement*);
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TRI_skiplist_iterator_t* SkiplistIndex_find (SkiplistIndex*, TRI_vector_t*, TRI_sl_operator_t*);
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int SkiplistIndex_insert (SkiplistIndex*, SkiplistIndexElement*);
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int SkiplistIndex_remove (SkiplistIndex*, SkiplistIndexElement*);
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bool SkiplistIndex_update (SkiplistIndex*, const SkiplistIndexElement*, const SkiplistIndexElement*);
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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// Multi-skiplist non-unique skiplist indexes
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//------------------------------------------------------------------------------
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//------------------------------------------------------------------------------
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SkiplistIndex* MultiSkiplistIndex_new (void);
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int MultiSkiplistIndex_add (SkiplistIndex*, SkiplistIndexElement*);
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TRI_skiplist_iterator_t* MultiSkiplistIndex_find (SkiplistIndex*, TRI_vector_t*, TRI_sl_operator_t*);
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int MultiSkiplistIndex_insert (SkiplistIndex*, SkiplistIndexElement*);
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int MultiSkiplistIndex_remove (SkiplistIndex*, SkiplistIndexElement*);
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bool MultiSkiplistIndex_update (SkiplistIndex*, SkiplistIndexElement*, SkiplistIndexElement*);
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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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