| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_METADATA_CODING_H_ |
| #define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_METADATA_CODING_H_ |
| |
| #include <stdint.h> |
| #include <map> |
| #include <string> |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "base/strings/string16.h" |
| #include "content/common/content_export.h" |
| #include "third_party/blink/public/common/indexeddb/indexeddb_key_path.h" |
| #include "third_party/blink/public/mojom/indexeddb/indexeddb.mojom.h" |
| #include "third_party/leveldatabase/src/include/leveldb/status.h" |
| |
| namespace blink { |
| struct IndexedDBDatabaseMetadata; |
| struct IndexedDBIndexMetadata; |
| struct IndexedDBObjectStoreMetadata; |
| } // namespace blink |
| |
| namespace content { |
| class LevelDBDatabase; |
| class LevelDBTransaction; |
| |
| // Creation, reading, and modification operations for IndexedDB metadata. All |
| // methods that write data to disk use the given |transaction| for writing (and |
| // thus the writes will be committed with the transaction). |
| // |
| // This class contains no state and thus could be static, but is held as a class |
| // to enable subclassing for testing. |
| class CONTENT_EXPORT IndexedDBMetadataCoding { |
| public: |
| IndexedDBMetadataCoding(); |
| virtual ~IndexedDBMetadataCoding(); |
| |
| // Reads the list of database names for the given origin. |
| virtual leveldb::Status ReadDatabaseNames( |
| LevelDBDatabase* db, |
| const std::string& origin_identifier, |
| std::vector<base::string16>* names); |
| virtual leveldb::Status ReadDatabaseNames( |
| LevelDBTransaction* transaction, |
| const std::string& origin_identifier, |
| std::vector<base::string16>* names); |
| |
| // Reads in the list of database names and versions for the given origin. |
| virtual leveldb::Status ReadDatabaseNamesAndVersions( |
| LevelDBDatabase* db, |
| const std::string& origin_identifier, |
| std::vector<blink::mojom::IDBNameAndVersionPtr>* names_and_versions); |
| |
| // Reads in metadata for the database and all object stores & indices. |
| // Note: the database name is not populated in |metadata|. |
| virtual leveldb::Status ReadMetadataForDatabaseName( |
| LevelDBDatabase* db, |
| const std::string& origin_identifier, |
| const base::string16& name, |
| blink::IndexedDBDatabaseMetadata* metadata, |
| bool* found); |
| virtual leveldb::Status ReadMetadataForDatabaseName( |
| LevelDBTransaction* transaction, |
| const std::string& origin_identifier, |
| const base::string16& name, |
| blink::IndexedDBDatabaseMetadata* metadata, |
| bool* found); |
| |
| // Creates a new database metadata entry and writes it to disk. |
| virtual leveldb::Status CreateDatabase( |
| LevelDBDatabase* database, |
| const std::string& origin_identifier, |
| const base::string16& name, |
| int64_t version, |
| blink::IndexedDBDatabaseMetadata* metadata); |
| |
| // Changes the database version to |version|. |
| virtual void SetDatabaseVersion(LevelDBTransaction* transaction, |
| int64_t row_id, |
| int64_t version, |
| blink::IndexedDBDatabaseMetadata* metadata); |
| |
| // Reads only the database id, if found. |
| virtual leveldb::Status FindDatabaseId(LevelDBDatabase* db, |
| const std::string& origin_identifier, |
| const base::string16& name, |
| int64_t* id, |
| bool* found); |
| |
| // Creates a new object store metadata entry and writes it to the transaction. |
| virtual leveldb::Status CreateObjectStore( |
| LevelDBTransaction* transaction, |
| int64_t database_id, |
| int64_t object_store_id, |
| base::string16 name, |
| blink::IndexedDBKeyPath key_path, |
| bool auto_increment, |
| blink::IndexedDBObjectStoreMetadata* metadata); |
| |
| // Deletes the given object store metadata on the transaction (but not any |
| // data entries or blobs in the object store). |
| virtual leveldb::Status DeleteObjectStore( |
| LevelDBTransaction* transaction, |
| int64_t database_id, |
| const blink::IndexedDBObjectStoreMetadata& object_store); |
| |
| // Renames the given object store and writes it to the transaction. |
| virtual leveldb::Status RenameObjectStore( |
| LevelDBTransaction* transaction, |
| int64_t database_id, |
| base::string16 new_name, |
| base::string16* old_name, |
| blink::IndexedDBObjectStoreMetadata* metadata); |
| |
| // Creates a new index metadata and writes it to the transaction. |
| virtual leveldb::Status CreateIndex(LevelDBTransaction* transaction, |
| int64_t database_id, |
| int64_t object_store_id, |
| int64_t index_id, |
| base::string16 name, |
| blink::IndexedDBKeyPath key_path, |
| bool is_unique, |
| bool is_multi_entry, |
| blink::IndexedDBIndexMetadata* metadata); |
| |
| // Deletes the index metadata on the transaction (but not any index entries). |
| virtual leveldb::Status DeleteIndex( |
| LevelDBTransaction* transaction, |
| int64_t database_id, |
| int64_t object_store_id, |
| const blink::IndexedDBIndexMetadata& metadata); |
| |
| // Renames the given index and writes it to the transaction. |
| virtual leveldb::Status RenameIndex(LevelDBTransaction* transaction, |
| int64_t database_id, |
| int64_t object_store_id, |
| base::string16 new_name, |
| base::string16* old_name, |
| blink::IndexedDBIndexMetadata* metadata); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(IndexedDBMetadataCoding); |
| }; |
| |
| } // namespace content |
| #endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_METADATA_CODING_H_ |