1/* node-rev.c --- storing and retrieving NODE-REVISION skels
2 *
3 * ====================================================================
4 *    Licensed to the Apache Software Foundation (ASF) under one
5 *    or more contributor license agreements.  See the NOTICE file
6 *    distributed with this work for additional information
7 *    regarding copyright ownership.  The ASF licenses this file
8 *    to you under the Apache License, Version 2.0 (the
9 *    "License"); you may not use this file except in compliance
10 *    with the License.  You may obtain a copy of the License at
11 *
12 *      http://www.apache.org/licenses/LICENSE-2.0
13 *
14 *    Unless required by applicable law or agreed to in writing,
15 *    software distributed under the License is distributed on an
16 *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 *    KIND, either express or implied.  See the License for the
18 *    specific language governing permissions and limitations
19 *    under the License.
20 * ====================================================================
21 */
22
23#include <string.h>
24
25#define SVN_WANT_BDB
26#include "svn_private_config.h"
27
28#include "svn_fs.h"
29#include "fs.h"
30#include "err.h"
31#include "node-rev.h"
32#include "reps-strings.h"
33#include "id.h"
34#include "../libsvn_fs/fs-loader.h"
35
36#include "bdb/nodes-table.h"
37#include "bdb/node-origins-table.h"
38
39
40/* Creating completely new nodes.  */
41
42
43svn_error_t *
44svn_fs_base__create_node(const svn_fs_id_t **id_p,
45                         svn_fs_t *fs,
46                         node_revision_t *noderev,
47                         const char *copy_id,
48                         const char *txn_id,
49                         trail_t *trail,
50                         apr_pool_t *pool)
51{
52  svn_fs_id_t *id;
53  base_fs_data_t *bfd = fs->fsap_data;
54
55  /* Find an unused ID for the node.  */
56  SVN_ERR(svn_fs_bdb__new_node_id(&id, fs, copy_id, txn_id, trail, pool));
57
58  /* Store its NODE-REVISION skel.  */
59  SVN_ERR(svn_fs_bdb__put_node_revision(fs, id, noderev, trail, pool));
60
61  /* Add a record in the node origins index table if our format
62     supports it.  */
63  if (bfd->format >= SVN_FS_BASE__MIN_NODE_ORIGINS_FORMAT)
64    {
65      SVN_ERR(svn_fs_bdb__set_node_origin(fs, svn_fs_base__id_node_id(id),
66                                          id, trail, pool));
67    }
68
69  *id_p = id;
70  return SVN_NO_ERROR;
71}
72
73
74
75/* Creating new revisions of existing nodes.  */
76
77svn_error_t *
78svn_fs_base__create_successor(const svn_fs_id_t **new_id_p,
79                              svn_fs_t *fs,
80                              const svn_fs_id_t *old_id,
81                              node_revision_t *new_noderev,
82                              const char *copy_id,
83                              const char *txn_id,
84                              trail_t *trail,
85                              apr_pool_t *pool)
86{
87  svn_fs_id_t *new_id;
88
89  /* Choose an ID for the new node, and store it in the database.  */
90  SVN_ERR(svn_fs_bdb__new_successor_id(&new_id, fs, old_id, copy_id,
91                                       txn_id, trail, pool));
92
93  /* Store the new skel under that ID.  */
94  SVN_ERR(svn_fs_bdb__put_node_revision(fs, new_id, new_noderev,
95                                        trail, pool));
96
97  *new_id_p = new_id;
98  return SVN_NO_ERROR;
99}
100
101
102
103/* Deleting a node revision. */
104
105svn_error_t *
106svn_fs_base__delete_node_revision(svn_fs_t *fs,
107                                  const svn_fs_id_t *id,
108                                  svn_boolean_t origin_also,
109                                  trail_t *trail,
110                                  apr_pool_t *pool)
111{
112  base_fs_data_t *bfd = fs->fsap_data;
113
114  /* ### todo: here, we should adjust other nodes to compensate for
115     the missing node. */
116
117  /* Delete the node origin record, too, if asked to do so and our
118     format supports it. */
119  if (origin_also && (bfd->format >= SVN_FS_BASE__MIN_NODE_ORIGINS_FORMAT))
120    {
121      SVN_ERR(svn_fs_bdb__delete_node_origin(fs, svn_fs_base__id_node_id(id),
122                                             trail, pool));
123    }
124
125  return svn_fs_bdb__delete_nodes_entry(fs, id, trail, pool);
126}
127