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32 lines
1.0 KiB
C
32 lines
1.0 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1998-2004
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* Sleepycat Software. All rights reserved.
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*
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* @(#)db_join.h 11.1 (Sleepycat) 7/25/99
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*/
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#ifndef _DB_JOIN_H_
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#define _DB_JOIN_H_
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/*
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* Joins use a join cursor that is similar to a regular DB cursor except
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* that it only supports c_get and c_close functionality. Also, it does
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* not support the full range of flags for get.
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*/
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typedef struct __join_cursor {
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u_int8_t *j_exhausted; /* Array of flags; is cursor i exhausted? */
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DBC **j_curslist; /* Array of cursors in the join: constant. */
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DBC **j_fdupcurs; /* Cursors w/ first instances of current dup. */
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DBC **j_workcurs; /* Scratch cursor copies to muck with. */
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DB *j_primary; /* Primary dbp. */
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DBT j_key; /* Used to do lookups. */
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DBT j_rdata; /* Memory used for data return. */
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u_int32_t j_ncurs; /* How many cursors do we have? */
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#define JOIN_RETRY 0x01 /* Error on primary get; re-return same key. */
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u_int32_t flags;
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} JOIN_CURSOR;
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#endif /* !_DB_JOIN_H_ */
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