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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1998-2002
* Sleepycat Software. All rights reserved.
*
* @(#)db_join.h 11.1 (Sleepycat) 7/25/99
*/
#ifndef _DB_JOIN_H_
#define _DB_JOIN_H_
/*
* Joins use a join cursor that is similar to a regular DB cursor except
* that it only supports c_get and c_close functionality. Also, it does
* not support the full range of flags for get.
*/
typedef struct __join_cursor {
u_int8_t *j_exhausted; /* Array of flags; is cursor i exhausted? */
DBC **j_curslist; /* Array of cursors in the join: constant. */
DBC **j_fdupcurs; /* Cursors w/ first intances of current dup. */
DBC **j_workcurs; /* Scratch cursor copies to muck with. */
DB *j_primary; /* Primary dbp. */
DBT j_key; /* Used to do lookups. */
DBT j_rdata; /* Memory used for data return. */
u_int32_t j_ncurs; /* How many cursors do we have? */
#define JOIN_RETRY 0x01 /* Error on primary get; re-return same key. */
u_int32_t flags;
} JOIN_CURSOR;
#endif /* !_DB_JOIN_H_ */
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