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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_LEVELDB_CODING_H_ | 5 #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_LEVELDB_CODING_H_ |
6 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_LEVELDB_CODING_H_ | 6 #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_LEVELDB_CODING_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
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86 static bool Decode(base::StringPiece* slice, KeyPrefix* result); | 86 static bool Decode(base::StringPiece* slice, KeyPrefix* result); |
87 std::string Encode() const; | 87 std::string Encode() const; |
88 static std::string EncodeEmpty(); | 88 static std::string EncodeEmpty(); |
89 int Compare(const KeyPrefix& other) const; | 89 int Compare(const KeyPrefix& other) const; |
90 | 90 |
91 enum Type { | 91 enum Type { |
92 GLOBAL_METADATA, | 92 GLOBAL_METADATA, |
93 DATABASE_METADATA, | 93 DATABASE_METADATA, |
94 OBJECT_STORE_DATA, | 94 OBJECT_STORE_DATA, |
95 EXISTS_ENTRY, | 95 EXISTS_ENTRY, |
| 96 BLOB_ENTRY, |
96 INDEX_DATA, | 97 INDEX_DATA, |
97 INVALID_TYPE | 98 INVALID_TYPE |
98 }; | 99 }; |
99 | 100 |
100 static const size_t kMaxDatabaseIdSizeBits = 3; | 101 static const size_t kMaxDatabaseIdSizeBits = 3; |
101 static const size_t kMaxObjectStoreIdSizeBits = 3; | 102 static const size_t kMaxObjectStoreIdSizeBits = 3; |
102 static const size_t kMaxIndexIdSizeBits = 2; | 103 static const size_t kMaxIndexIdSizeBits = 2; |
103 | 104 |
104 static const size_t kMaxDatabaseIdSizeBytes = | 105 static const size_t kMaxDatabaseIdSizeBytes = |
105 1ULL << kMaxDatabaseIdSizeBits; // 8 | 106 1ULL << kMaxDatabaseIdSizeBits; // 8 |
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161 class MaxDatabaseIdKey { | 162 class MaxDatabaseIdKey { |
162 public: | 163 public: |
163 CONTENT_EXPORT static std::string Encode(); | 164 CONTENT_EXPORT static std::string Encode(); |
164 }; | 165 }; |
165 | 166 |
166 class DataVersionKey { | 167 class DataVersionKey { |
167 public: | 168 public: |
168 static std::string Encode(); | 169 static std::string Encode(); |
169 }; | 170 }; |
170 | 171 |
| 172 class BlobJournalKey { |
| 173 public: |
| 174 static std::string Encode(); |
| 175 }; |
| 176 |
| 177 class LiveBlobJournalKey { |
| 178 public: |
| 179 static std::string Encode(); |
| 180 }; |
| 181 |
171 class DatabaseFreeListKey { | 182 class DatabaseFreeListKey { |
172 public: | 183 public: |
173 DatabaseFreeListKey(); | 184 DatabaseFreeListKey(); |
174 static bool Decode(base::StringPiece* slice, DatabaseFreeListKey* result); | 185 static bool Decode(base::StringPiece* slice, DatabaseFreeListKey* result); |
175 CONTENT_EXPORT static std::string Encode(int64 database_id); | 186 CONTENT_EXPORT static std::string Encode(int64 database_id); |
176 static CONTENT_EXPORT std::string EncodeMaxKey(); | 187 static CONTENT_EXPORT std::string EncodeMaxKey(); |
177 int64 DatabaseId() const; | 188 int64 DatabaseId() const; |
178 int Compare(const DatabaseFreeListKey& other) const; | 189 int Compare(const DatabaseFreeListKey& other) const; |
179 | 190 |
180 private: | 191 private: |
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200 }; | 211 }; |
201 | 212 |
202 class DatabaseMetaDataKey { | 213 class DatabaseMetaDataKey { |
203 public: | 214 public: |
204 enum MetaDataType { | 215 enum MetaDataType { |
205 ORIGIN_NAME = 0, | 216 ORIGIN_NAME = 0, |
206 DATABASE_NAME = 1, | 217 DATABASE_NAME = 1, |
207 USER_VERSION = 2, | 218 USER_VERSION = 2, |
208 MAX_OBJECT_STORE_ID = 3, | 219 MAX_OBJECT_STORE_ID = 3, |
209 USER_INT_VERSION = 4, | 220 USER_INT_VERSION = 4, |
210 MAX_SIMPLE_METADATA_TYPE = 5 | 221 BLOB_KEY_GENERATOR_CURRENT_NUMBER = 5, |
| 222 MAX_SIMPLE_METADATA_TYPE = 6 |
211 }; | 223 }; |
212 | 224 |
| 225 static const int64 kAllBlobsKey = 1; |
| 226 static const int64 kBlobKeyGeneratorInitialNumber = 2; |
| 227 static const int64 kInvalidBlobKey = -1; // All keys <= 0 are invalid. |
| 228 |
| 229 static bool IsValidBlobKey(int64 blobKey); |
213 CONTENT_EXPORT static std::string Encode(int64 database_id, | 230 CONTENT_EXPORT static std::string Encode(int64 database_id, |
214 MetaDataType type); | 231 MetaDataType type); |
215 }; | 232 }; |
216 | 233 |
217 class ObjectStoreMetaDataKey { | 234 class ObjectStoreMetaDataKey { |
218 public: | 235 public: |
219 enum MetaDataType { | 236 enum MetaDataType { |
220 NAME = 0, | 237 NAME = 0, |
221 KEY_PATH = 1, | 238 KEY_PATH = 1, |
222 AUTO_INCREMENT = 2, | 239 AUTO_INCREMENT = 2, |
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373 int Compare(const ExistsEntryKey& other, bool* ok); | 390 int Compare(const ExistsEntryKey& other, bool* ok); |
374 scoped_ptr<IndexedDBKey> user_key() const; | 391 scoped_ptr<IndexedDBKey> user_key() const; |
375 | 392 |
376 static const int64 kSpecialIndexNumber; | 393 static const int64 kSpecialIndexNumber; |
377 | 394 |
378 private: | 395 private: |
379 std::string encoded_user_key_; | 396 std::string encoded_user_key_; |
380 DISALLOW_COPY_AND_ASSIGN(ExistsEntryKey); | 397 DISALLOW_COPY_AND_ASSIGN(ExistsEntryKey); |
381 }; | 398 }; |
382 | 399 |
| 400 class BlobEntryKey { |
| 401 public: |
| 402 BlobEntryKey() |
| 403 : database_id_(0), |
| 404 object_store_id_(0) |
| 405 { |
| 406 } |
| 407 static bool Decode(base::StringPiece* slice, BlobEntryKey* result); |
| 408 static bool FromObjectStoreDataKey(base::StringPiece* slice, |
| 409 BlobEntryKey* result); |
| 410 static std::string EncodeToObjectStoreDataKey(base::StringPiece* slice); |
| 411 static std::string EncodeMinForObjectStore(int64 database_id, |
| 412 int64 object_store_id); |
| 413 static std::string EncodeMaxForObjectStore(int64 database_id, |
| 414 int64 object_store_id); |
| 415 static std::string Encode(int64 database_id, |
| 416 int64 object_store_id, |
| 417 const IndexedDBKey& user_key); |
| 418 std::string Encode() const; |
| 419 int64 database_id() const { return database_id_; } |
| 420 int64 object_store_id() const { return object_store_id_; } |
| 421 int Compare(const BlobEntryKey& other, bool* ok); |
| 422 |
| 423 static const int64 kSpecialIndexNumber; |
| 424 |
| 425 private: |
| 426 static std::string Encode(int64 database_id, |
| 427 int64 object_store_id, |
| 428 const std::string& encoded_user_key); |
| 429 int64 database_id_; |
| 430 int64 object_store_id_; |
| 431 // This is the user's ObjectStoreDataKey, not the BlobEntryKey itself. |
| 432 std::string encoded_user_key_; |
| 433 }; |
| 434 |
383 class IndexDataKey { | 435 class IndexDataKey { |
384 public: | 436 public: |
385 IndexDataKey(); | 437 IndexDataKey(); |
386 ~IndexDataKey(); | 438 ~IndexDataKey(); |
387 static bool Decode(base::StringPiece* slice, IndexDataKey* result); | 439 static bool Decode(base::StringPiece* slice, IndexDataKey* result); |
388 CONTENT_EXPORT static std::string Encode( | 440 CONTENT_EXPORT static std::string Encode( |
389 int64 database_id, | 441 int64 database_id, |
390 int64 object_store_id, | 442 int64 object_store_id, |
391 int64 index_id, | 443 int64 index_id, |
392 const std::string& encoded_user_key, | 444 const std::string& encoded_user_key, |
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418 std::string encoded_user_key_; | 470 std::string encoded_user_key_; |
419 std::string encoded_primary_key_; | 471 std::string encoded_primary_key_; |
420 int64 sequence_number_; | 472 int64 sequence_number_; |
421 | 473 |
422 DISALLOW_COPY_AND_ASSIGN(IndexDataKey); | 474 DISALLOW_COPY_AND_ASSIGN(IndexDataKey); |
423 }; | 475 }; |
424 | 476 |
425 } // namespace content | 477 } // namespace content |
426 | 478 |
427 #endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_LEVELDB_CODING_H_ | 479 #endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_LEVELDB_CODING_H_ |
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