subversion/libsvn_fs_base/node-rev.c

   1 /* node-rev.c --- storing and retrieving NODE-REVISION skels
   2  *
   3  * ====================================================================
   4  * Copyright (c) 2000-2004 CollabNet.  All rights reserved.
   5  *
   6  * This software is licensed as described in the file COPYING, which
   7  * you should have received as part of this distribution.  The terms
   8  * are also available at http://subversion.tigris.org/license-1.html.
   9  * If newer versions of this license are posted there, you may use a
  10  * newer version instead, at your option.
  11  *
  12  * This software consists of voluntary contributions made by many
  13  * individuals.  For exact contribution history, see the revision
  14  * history and logs, available at http://subversion.tigris.org/.
  15  * ====================================================================
  16  */
  17
  18 #include <string.h>
  19
  20 #define APU_WANT_DB
  21 #include <apu_want.h>
  22
  23 #include "svn_fs.h"
  24 #include "fs.h"
  25 #include "err.h"
  26 #include "node-rev.h"
  27 #include "reps-strings.h"
  28 #include "id.h"
  29 #include "../libsvn_fs/fs-loader.h"
  30
  31 #include "bdb/nodes-table.h"
  32 #include "bdb/node-origins-table.h"
  33
  34 \f
  35 /* Creating completely new nodes.  */
  36
  37
  38 svn_error_t *
  39 svn_fs_base__create_node(const svn_fs_id_t **id_p,
  40                          svn_fs_t *fs,
  41                          node_revision_t *noderev,
  42                          const char *copy_id,
  43                          const char *txn_id,
  44                          trail_t *trail,
  45                          apr_pool_t *pool)
  46 {
  47   svn_fs_id_t *id;
  48   base_fs_data_t *bfd = fs->fsap_data;
  49
  50   /* Find an unused ID for the node.  */
  51   SVN_ERR(svn_fs_bdb__new_node_id(&id, fs, copy_id, txn_id, trail, pool));
  52
  53   /* Store its NODE-REVISION skel.  */
  54   SVN_ERR(svn_fs_bdb__put_node_revision(fs, id, noderev, trail, pool));
  55
  56   /* Add a record in the node origins index table if our format
  57      supports it.  */
  58   if (bfd->format >= SVN_FS_BASE__MIN_NODE_ORIGINS_FORMAT)
  59     {
  60       SVN_ERR(svn_fs_bdb__set_node_origin(fs, svn_fs_base__id_node_id(id),
  61                                           id, trail, pool));
  62     }
  63
  64   *id_p = id;
  65   return SVN_NO_ERROR;
  66 }
  67
  68
  69 \f
  70 /* Creating new revisions of existing nodes.  */
  71
  72 svn_error_t *
  73 svn_fs_base__create_successor(const svn_fs_id_t **new_id_p,
  74                               svn_fs_t *fs,
  75                               const svn_fs_id_t *old_id,
  76                               node_revision_t *new_noderev,
  77                               const char *copy_id,
  78                               const char *txn_id,
  79                               trail_t *trail,
  80                               apr_pool_t *pool)
  81 {
  82   svn_fs_id_t *new_id;
  83
  84   /* Choose an ID for the new node, and store it in the database.  */
  85   SVN_ERR(svn_fs_bdb__new_successor_id(&new_id, fs, old_id, copy_id,
  86                                        txn_id, trail, pool));
  87
  88   /* Store the new skel under that ID.  */
  89   SVN_ERR(svn_fs_bdb__put_node_revision(fs, new_id, new_noderev,
  90                                         trail, pool));
  91
  92   *new_id_p = new_id;
  93   return SVN_NO_ERROR;
  94 }
  95
  96
  97 \f
  98 /* Deleting a node revision. */
  99
 100 svn_error_t *
 101 svn_fs_base__delete_node_revision(svn_fs_t *fs,
 102                                   const svn_fs_id_t *id,
 103                                   svn_boolean_t origin_also,
 104                                   trail_t *trail,
 105                                   apr_pool_t *pool)
 106 {
 107   base_fs_data_t *bfd = fs->fsap_data;
 108
 109   /* ### todo: here, we should adjust other nodes to compensate for
 110      the missing node. */
 111
 112   /* Delete the node origin record, too, if asked to do so and our
 113      format supports it. */
 114   if (origin_also && (bfd->format >= SVN_FS_BASE__MIN_NODE_ORIGINS_FORMAT))
 115     {
 116       SVN_ERR(svn_fs_bdb__delete_node_origin(fs, svn_fs_base__id_node_id(id),
 117                                              trail, pool));
 118     }
 119
 120   return svn_fs_bdb__delete_nodes_entry(fs, id, trail, pool);
 121 }