Import BSDDB 4.7.25 (as of svn r89086)

dbinc/db_join.h

@@ -0,0 +1,37 @@
+/*-
+ * See the file LICENSE for redistribution information.
+ *
+ * Copyright (c) 1998,2008 Oracle.  All rights reserved.
+ *
+ * $Id: db_join.h 63573 2008-05-23 21:43:21Z trent.nelson $
+ */
+
+#ifndef _DB_JOIN_H_
+#define	_DB_JOIN_H_
+
+#if defined(__cplusplus)
+extern "C" {
+#endif
+
+/*
+ * 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 instances 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;
+
+#if defined(__cplusplus)
+}
+#endif
+#endif /* !_DB_JOIN_H_ */