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view src/dbinc/partition.h @ 0:a1985f14b030
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author | chegar |
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date | Fri, 11 May 2012 10:42:02 +0100 |
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/*- * See the file LICENSE for redistribution information. * * Copyright (c) 1996, 2012 Oracle and/or its affiliates. All rights reserved. * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * $Id$ */ #ifndef _DB_PART_H_ #define _DB_PART_H_ #if defined(__cplusplus) extern "C" { #endif typedef struct __db_partition { u_int32_t nparts; /* number of partitions. */ DBT *keys; /* array of range keys. */ void *data; /* the partition info. */ const char **dirs; /* locations for partitions. */ DB **handles; /* array of partition handles. */ u_int32_t (*callback) (DB *, DBT *); #define PART_CALLBACK 0x01 #define PART_RANGE 0x02 u_int32_t flags; } DB_PARTITION; /* * Internal part of a partitioned cursor. */ typedef struct __part_internal { __DBC_INTERNAL u_int32_t part_id; DBC *sub_cursor; } PART_CURSOR; #ifdef HAVE_PARTITION #define PART_NAME "__dbp.%s.%03d" #define PART_LEN (strlen("__dbp..")+3) #define PART_PREFIX "__dbp." #define IS_PARTITION_DB_FILE(name) (strncmp(name, PART_PREFIX, \ sizeof(PART_PREFIX) - 1) == 0) #define DB_IS_PARTITIONED(dbp) \ (dbp->p_internal != NULL && \ ((DB_PARTITION *)dbp->p_internal)->handles != NULL) #define DBC_PART_REFRESH(dbc) (F_SET(dbc, DBC_PARTITIONED)) #else #define DBC_PART_REFRESH(dbc) #define DB_IS_PARTITIONED(dbp) (0) #endif #if defined(__cplusplus) } #endif #endif