Line data Source code
1 : // Copyright (c) 2019 Made to Order Software Corp. All Rights Reserved
2 : //
3 : // https://snapwebsites.org/project/snapdatabase
4 : // contact@m2osw.com
5 : //
6 : // This program is free software; you can redistribute it and/or modify
7 : // it under the terms of the GNU General Public License as published by
8 : // the Free Software Foundation; either version 2 of the License, or
9 : // (at your option) any later version.
10 : //
11 : // This program is distributed in the hope that it will be useful,
12 : // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 : // GNU General Public License for more details.
15 : //
16 : // You should have received a copy of the GNU General Public License along
17 : // with this program; if not, write to the Free Software Foundation, Inc.,
18 : // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19 :
20 :
21 : /** \file
22 : * \brief Database file implementation.
23 : *
24 : * Each table uses one or more files. Each file is handled by a dbfile
25 : * object and a corresponding set of blocks.
26 : */
27 :
28 : // self
29 : //
30 : #include "snapdatabase/file/file_snap_database_table.h"
31 :
32 : #include "snapdatabase/block/block_header.h"
33 :
34 :
35 : // C++ lib
36 : //
37 : #include <iostream>
38 :
39 :
40 : // last include
41 : //
42 : #include <snapdev/poison.h>
43 :
44 :
45 :
46 : namespace snapdatabase
47 : {
48 :
49 :
50 :
51 : namespace detail
52 : {
53 : }
54 :
55 :
56 :
57 : namespace
58 : {
59 :
60 :
61 :
62 : // 'SDBT' -- snapdatabase file
63 : constexpr struct_description_t g_description[] =
64 : {
65 : define_description(
66 : FieldName("header")
67 : , FieldType(struct_type_t::STRUCT_TYPE_STRUCTURE)
68 : , FieldSubDescription(detail::g_block_header)
69 : ),
70 : define_description(
71 : FieldName("file_version")
72 : , FieldType(struct_type_t::STRUCT_TYPE_VERSION)
73 : ),
74 : define_description(
75 : FieldName("block_size")
76 : , FieldType(struct_type_t::STRUCT_TYPE_UINT32)
77 : ),
78 : define_description(
79 : FieldName("table_definition") // this is the schema
80 : , FieldType(struct_type_t::STRUCT_TYPE_REFERENCE)
81 : ),
82 : define_description(
83 : FieldName("first_free_block")
84 : , FieldType(struct_type_t::STRUCT_TYPE_REFERENCE)
85 : ),
86 : // at this time we do not allow dynamically created/dropped tables
87 : //define_description(
88 : // FieldName("table_expiration_date")
89 : // , FieldType(struct_type_t::STRUCT_TYPE_TIME)
90 : //),
91 : define_description(
92 : FieldName("indirect_index")
93 : , FieldType(struct_type_t::STRUCT_TYPE_REFERENCE)
94 : ),
95 : define_description(
96 : FieldName("last_oid")
97 : , FieldType(struct_type_t::STRUCT_TYPE_OID)
98 : ),
99 : define_description(
100 : FieldName("first_free_oid")
101 : , FieldType(struct_type_t::STRUCT_TYPE_OID)
102 : ),
103 : define_description(
104 : FieldName("first_compactable_block")
105 : , FieldType(struct_type_t::STRUCT_TYPE_REFERENCE)
106 : ),
107 : define_description(
108 : FieldName("top_key_index_block")
109 : , FieldType(struct_type_t::STRUCT_TYPE_REFERENCE)
110 : ),
111 : define_description(
112 : FieldName("expiration_index_block")
113 : , FieldType(struct_type_t::STRUCT_TYPE_REFERENCE)
114 : ),
115 : define_description(
116 : FieldName("secondary_index_block")
117 : , FieldType(struct_type_t::STRUCT_TYPE_REFERENCE)
118 : ),
119 : define_description(
120 : FieldName("tree_index_block")
121 : , FieldType(struct_type_t::STRUCT_TYPE_REFERENCE)
122 : ),
123 : define_description(
124 : FieldName("deleted_rows")
125 : , FieldType(struct_type_t::STRUCT_TYPE_UINT64)
126 : ),
127 : define_description( // bloom filters use separate files
128 : FieldName("bloom_filter_flags=algorithm:4/renewing")
129 : , FieldType(struct_type_t::STRUCT_TYPE_BITS32)
130 : ),
131 : end_descriptions()
132 : };
133 :
134 :
135 : constexpr descriptions_by_version_t const g_descriptions_by_version[] =
136 : {
137 : define_description_by_version(
138 : DescriptionVersion(0, 1),
139 : DescriptionDescription(g_description)
140 : ),
141 : end_descriptions_by_version()
142 : };
143 :
144 :
145 :
146 : }
147 : // no name namespace
148 :
149 :
150 :
151 :
152 :
153 :
154 :
155 :
156 :
157 1 : file_snap_database_table::file_snap_database_table(dbfile::pointer_t f, reference_t offset)
158 1 : : block(g_descriptions_by_version, f, offset)
159 : {
160 1 : std::cerr << "--- the file_snap_database_table offset = " << offset << "\n";
161 1 : }
162 :
163 :
164 0 : version_t file_snap_database_table::get_file_version() const
165 : {
166 0 : return static_cast<version_t>(static_cast<uint32_t>(f_structure->get_uinteger("file_version")));
167 : }
168 :
169 :
170 1 : void file_snap_database_table::set_file_version(version_t v)
171 : {
172 1 : f_structure->set_uinteger("file_version", v.to_binary());
173 1 : }
174 :
175 :
176 0 : uint32_t file_snap_database_table::get_block_size() const
177 : {
178 0 : return static_cast<reference_t>(f_structure->get_uinteger("block_size"));
179 : }
180 :
181 :
182 1 : void file_snap_database_table::set_block_size(uint32_t offset)
183 : {
184 1 : f_structure->set_uinteger("block_size", offset);
185 1 : }
186 :
187 :
188 1 : reference_t file_snap_database_table::get_table_definition() const
189 : {
190 1 : return static_cast<reference_t>(f_structure->get_uinteger("table_definition"));
191 : }
192 :
193 :
194 0 : void file_snap_database_table::set_table_definition(reference_t offset)
195 : {
196 0 : f_structure->set_uinteger("table_definition", offset);
197 0 : }
198 :
199 :
200 1 : reference_t file_snap_database_table::get_first_free_block() const
201 : {
202 1 : return static_cast<reference_t>(f_structure->get_uinteger("first_free_block"));
203 : }
204 :
205 :
206 2 : void file_snap_database_table::set_first_free_block(reference_t offset)
207 : {
208 2 : f_structure->set_uinteger("first_free_block", offset);
209 2 : }
210 :
211 :
212 :
213 6 : } // namespace snapdatabase
214 : // vim: ts=4 sw=4 et
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