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Unified Diff: trunk/src/content/browser/indexed_db/indexed_db_leveldb_coding.h

Issue 15870003: Revert 202215 "Migrate the IndexedDB backend from Blink to Chromium" (Closed) Base URL: svn://svn.chromium.org/chrome/
Patch Set: Created 7 years, 7 months ago
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Index: trunk/src/content/browser/indexed_db/indexed_db_leveldb_coding.h
===================================================================
--- trunk/src/content/browser/indexed_db/indexed_db_leveldb_coding.h (revision 202301)
+++ trunk/src/content/browser/indexed_db/indexed_db_leveldb_coding.h (working copy)
@@ -1,467 +0,0 @@
-// Copyright (c) 2013 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_LEVELDB_CODING_H_
-#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_LEVELDB_CODING_H_
-
-#include <vector>
-
-#include "base/basictypes.h"
-#include "base/logging.h"
-#include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/string16.h"
-#include "content/common/indexed_db/indexed_db_key.h"
-#include "content/common/indexed_db/indexed_db_key_path.h"
-
-namespace content {
-
-class LevelDBSlice;
-
-CONTENT_EXPORT extern const unsigned char kMinimumIndexId;
-
-CONTENT_EXPORT std::vector<char> EncodeByte(unsigned char);
-CONTENT_EXPORT const char* DecodeByte(const char* p,
- const char* limit,
- unsigned char& found_char);
-CONTENT_EXPORT std::vector<char> MaxIDBKey();
-CONTENT_EXPORT std::vector<char> MinIDBKey();
-CONTENT_EXPORT std::vector<char> EncodeBool(bool value);
-CONTENT_EXPORT bool DecodeBool(const char* begin, const char* end);
-CONTENT_EXPORT std::vector<char> EncodeInt(int64);
-inline std::vector<char> EncodeIntSafely(int64 nParam, int64 max) {
- DCHECK_LE(nParam, max);
- return EncodeInt(nParam);
-}
-
-template <class T> int64 DecodeInt(T begin, T end) {
- // TODO(alecflett): Make this a DCHECK_LE().
- DCHECK(begin <= end);
- int64 ret = 0;
-
- int shift = 0;
- while (begin < end) {
- unsigned char c = *begin++;
- ret |= static_cast<int64>(c) << shift;
- shift += 8;
- }
-
- return ret;
-}
-
-CONTENT_EXPORT std::vector<char> EncodeVarInt(int64);
-CONTENT_EXPORT const char* DecodeVarInt(const char* p,
- const char* limit,
- int64& found_int);
-CONTENT_EXPORT std::vector<char> EncodeString(const string16& string);
-CONTENT_EXPORT string16 DecodeString(const char* p, const char* end);
-CONTENT_EXPORT std::vector<char> EncodeStringWithLength(const string16& string);
-CONTENT_EXPORT const char* DecodeStringWithLength(const char* p,
- const char* limit,
- string16& found_string);
-CONTENT_EXPORT int CompareEncodedStringsWithLength(const char*& p,
- const char* limit_p,
- const char*& q,
- const char* limit_q,
- bool& ok);
-CONTENT_EXPORT std::vector<char> EncodeDouble(double value);
-CONTENT_EXPORT const char* DecodeDouble(const char* p,
- const char* limit,
- double* value);
-void EncodeIDBKey(const IndexedDBKey& key, std::vector<char>& into);
-CONTENT_EXPORT std::vector<char> EncodeIDBKey(const IndexedDBKey& key);
-CONTENT_EXPORT const char* DecodeIDBKey(const char* p,
- const char* limit,
- scoped_ptr<IndexedDBKey>* found_key);
-CONTENT_EXPORT const char* ExtractEncodedIDBKey(const char* start,
- const char* limit,
- std::vector<char>* result);
-CONTENT_EXPORT int CompareEncodedIDBKeys(const std::vector<char>& a,
- const std::vector<char>& b,
- bool& ok);
-CONTENT_EXPORT std::vector<char> EncodeIDBKeyPath(
- const IndexedDBKeyPath& key_path);
-CONTENT_EXPORT IndexedDBKeyPath DecodeIDBKeyPath(const char* start,
- const char* limit);
-
-CONTENT_EXPORT int Compare(const LevelDBSlice& a,
- const LevelDBSlice& b,
- bool index_keys = false);
-
-class KeyPrefix {
- public:
- KeyPrefix();
- explicit KeyPrefix(int64 database_id);
- KeyPrefix(int64 database_id, int64 object_store_id);
- KeyPrefix(int64 database_id, int64 object_store_id, int64 index_id);
- static KeyPrefix CreateWithSpecialIndex(int64 database_id,
- int64 object_store_id,
- int64 index_id);
-
- static const char* Decode(const char* start,
- const char* limit,
- KeyPrefix* result);
- std::vector<char> Encode() const;
- static std::vector<char> EncodeEmpty();
- int Compare(const KeyPrefix& other) const;
-
- enum Type {
- GLOBAL_METADATA,
- DATABASE_METADATA,
- OBJECT_STORE_DATA,
- EXISTS_ENTRY,
- INDEX_DATA,
- INVALID_TYPE
- };
-
- static const size_t kMaxDatabaseIdSizeBits = 3;
- static const size_t kMaxObjectStoreIdSizeBits = 3;
- static const size_t kMaxIndexIdSizeBits = 2;
-
- static const size_t kMaxDatabaseIdSizeBytes =
- 1ULL << kMaxDatabaseIdSizeBits; // 8
- static const size_t kMaxObjectStoreIdSizeBytes =
- 1ULL << kMaxObjectStoreIdSizeBits; // 8
- static const size_t kMaxIndexIdSizeBytes = 1ULL << kMaxIndexIdSizeBits; // 4
-
- static const size_t kMaxDatabaseIdBits =
- kMaxDatabaseIdSizeBytes * 8 - 1; // 63
- static const size_t kMaxObjectStoreIdBits =
- kMaxObjectStoreIdSizeBytes * 8 - 1; // 63
- static const size_t kMaxIndexIdBits = kMaxIndexIdSizeBytes * 8 - 1; // 31
-
- static const int64 kMaxDatabaseId =
- (1ULL << kMaxDatabaseIdBits) - 1; // max signed int64
- static const int64 kMaxObjectStoreId =
- (1ULL << kMaxObjectStoreIdBits) - 1; // max signed int64
- static const int64 kMaxIndexId =
- (1ULL << kMaxIndexIdBits) - 1; // max signed int32
-
- static bool IsValidDatabaseId(int64 database_id);
- static bool IsValidObjectStoreId(int64 index_id);
- static bool IsValidIndexId(int64 index_id);
- static bool ValidIds(int64 database_id,
- int64 object_store_id,
- int64 index_id) {
- return IsValidDatabaseId(database_id) &&
- IsValidObjectStoreId(object_store_id) && IsValidIndexId(index_id);
- }
- static bool ValidIds(int64 database_id, int64 object_store_id) {
- return IsValidDatabaseId(database_id) &&
- IsValidObjectStoreId(object_store_id);
- }
-
- Type type() const;
-
- int64 database_id_;
- int64 object_store_id_;
- int64 index_id_;
-
- static const int64 kInvalidId = -1;
-
- private:
- static std::vector<char> EncodeInternal(int64 database_id,
- int64 object_store_id,
- int64 index_id);
- // Special constructor for CreateWithSpecialIndex()
- KeyPrefix(enum Type,
- int64 database_id,
- int64 object_store_id,
- int64 index_id);
-};
-
-class SchemaVersionKey {
- public:
- CONTENT_EXPORT static std::vector<char> Encode();
-};
-
-class MaxDatabaseIdKey {
- public:
- CONTENT_EXPORT static std::vector<char> Encode();
-};
-
-class DataVersionKey {
- public:
- static std::vector<char> Encode();
-};
-
-class DatabaseFreeListKey {
- public:
- DatabaseFreeListKey();
- static const char* Decode(const char* start,
- const char* limit,
- DatabaseFreeListKey* result);
- CONTENT_EXPORT static std::vector<char> Encode(int64 database_id);
- static CONTENT_EXPORT std::vector<char> EncodeMaxKey();
- int64 DatabaseId() const;
- int Compare(const DatabaseFreeListKey& other) const;
-
- private:
- int64 database_id_;
-};
-
-class DatabaseNameKey {
- public:
- static const char* Decode(const char* start,
- const char* limit,
- DatabaseNameKey* result);
- CONTENT_EXPORT static std::vector<char> Encode(const string16& origin,
- const string16& database_name);
- static std::vector<char> EncodeMinKeyForOrigin(const string16& origin);
- static std::vector<char> EncodeStopKeyForOrigin(const string16& origin);
- string16 origin() const { return origin_; }
- string16 database_name() const { return database_name_; }
- int Compare(const DatabaseNameKey& other);
-
- private:
- string16 origin_; // TODO(jsbell): Store encoded strings, or just pointers.
- string16 database_name_;
-};
-
-class DatabaseMetaDataKey {
- public:
- enum MetaDataType {
- ORIGIN_NAME = 0,
- DATABASE_NAME = 1,
- USER_VERSION = 2,
- MAX_OBJECT_STORE_ID = 3,
- USER_INT_VERSION = 4,
- MAX_SIMPLE_METADATA_TYPE = 5
- };
-
- CONTENT_EXPORT static std::vector<char> Encode(int64 database_id,
- MetaDataType type);
-};
-
-class ObjectStoreMetaDataKey {
- public:
- enum MetaDataType {
- NAME = 0,
- KEY_PATH = 1,
- AUTO_INCREMENT = 2,
- EVICTABLE = 3,
- LAST_VERSION = 4,
- MAX_INDEX_ID = 5,
- HAS_KEY_PATH = 6,
- KEY_GENERATOR_CURRENT_NUMBER = 7
- };
-
- ObjectStoreMetaDataKey();
- static const char* Decode(const char* start,
- const char* limit,
- ObjectStoreMetaDataKey* result);
- CONTENT_EXPORT static std::vector<char> Encode(int64 database_id,
- int64 object_store_id,
- unsigned char meta_data_type);
- CONTENT_EXPORT static std::vector<char> EncodeMaxKey(int64 database_id);
- CONTENT_EXPORT static std::vector<char> EncodeMaxKey(int64 database_id,
- int64 object_store_id);
- int64 ObjectStoreId() const;
- unsigned char MetaDataType() const;
- int Compare(const ObjectStoreMetaDataKey& other);
-
- private:
- int64 object_store_id_;
- unsigned char meta_data_type_;
-};
-
-class IndexMetaDataKey {
- public:
- enum MetaDataType {
- NAME = 0,
- UNIQUE = 1,
- KEY_PATH = 2,
- MULTI_ENTRY = 3
- };
-
- IndexMetaDataKey();
- static const char* Decode(const char* start,
- const char* limit,
- IndexMetaDataKey* result);
- CONTENT_EXPORT static std::vector<char> Encode(int64 database_id,
- int64 object_store_id,
- int64 index_id,
- unsigned char meta_data_type);
- CONTENT_EXPORT static std::vector<char> EncodeMaxKey(int64 database_id,
- int64 object_store_id);
- CONTENT_EXPORT static std::vector<char> EncodeMaxKey(int64 database_id,
- int64 object_store_id,
- int64 index_id);
- int Compare(const IndexMetaDataKey& other);
- int64 IndexId() const;
- unsigned char meta_data_type() const { return meta_data_type_; }
-
- private:
- int64 object_store_id_;
- int64 index_id_;
- unsigned char meta_data_type_;
-};
-
-class ObjectStoreFreeListKey {
- public:
- ObjectStoreFreeListKey();
- static const char* Decode(const char* start,
- const char* limit,
- ObjectStoreFreeListKey* result);
- CONTENT_EXPORT static std::vector<char> Encode(int64 database_id,
- int64 object_store_id);
- CONTENT_EXPORT static std::vector<char> EncodeMaxKey(int64 database_id);
- int64 ObjectStoreId() const;
- int Compare(const ObjectStoreFreeListKey& other);
-
- private:
- int64 object_store_id_;
-};
-
-class IndexFreeListKey {
- public:
- IndexFreeListKey();
- static const char* Decode(const char* start,
- const char* limit,
- IndexFreeListKey* result);
- CONTENT_EXPORT static std::vector<char> Encode(int64 database_id,
- int64 object_store_id,
- int64 index_id);
- CONTENT_EXPORT static std::vector<char> EncodeMaxKey(int64 database_id,
- int64 object_store_id);
- int Compare(const IndexFreeListKey& other);
- int64 ObjectStoreId() const;
- int64 IndexId() const;
-
- private:
- int64 object_store_id_;
- int64 index_id_;
-};
-
-class ObjectStoreNamesKey {
- public:
- // TODO(jsbell): We never use this to look up object store ids,
- // because a mapping is kept in the IndexedDBDatabaseImpl. Can the
- // mapping become unreliable? Can we remove this?
- static const char* Decode(const char* start,
- const char* limit,
- ObjectStoreNamesKey* result);
- CONTENT_EXPORT static std::vector<char> Encode(
- int64 database_id,
- const string16& object_store_name);
- int Compare(const ObjectStoreNamesKey& other);
- string16 object_store_name() const { return object_store_name_; }
-
- private:
- string16
- object_store_name_; // TODO(jsbell): Store the encoded string, or just
- // pointers to it.
-};
-
-class IndexNamesKey {
- public:
- IndexNamesKey();
- // TODO(jsbell): We never use this to look up index ids, because a mapping
- // is kept at a higher level.
- static const char* Decode(const char* start,
- const char* limit,
- IndexNamesKey* result);
- CONTENT_EXPORT static std::vector<char> Encode(int64 database_id,
- int64 object_store_id,
- const string16& index_name);
- int Compare(const IndexNamesKey& other);
- string16 index_name() const { return index_name_; }
-
- private:
- int64 object_store_id_;
- string16 index_name_;
-};
-
-class ObjectStoreDataKey {
- public:
- static const char* Decode(const char* start,
- const char* end,
- ObjectStoreDataKey* result);
- CONTENT_EXPORT static std::vector<char> Encode(
- int64 database_id,
- int64 object_store_id,
- const std::vector<char> encoded_user_key);
- static std::vector<char> Encode(int64 database_id,
- int64 object_store_id,
- const IndexedDBKey& user_key);
- int Compare(const ObjectStoreDataKey& other, bool& ok);
- scoped_ptr<IndexedDBKey> user_key() const;
- static const int64 kSpecialIndexNumber;
- ObjectStoreDataKey();
- ~ObjectStoreDataKey();
-
- private:
- std::vector<char> encoded_user_key_;
-};
-
-class ExistsEntryKey {
- public:
- ExistsEntryKey();
- ~ExistsEntryKey();
-
- static const char* Decode(const char* start,
- const char* end,
- ExistsEntryKey* result);
- CONTENT_EXPORT static std::vector<char> Encode(
- int64 database_id,
- int64 object_store_id,
- const std::vector<char>& encoded_key);
- static std::vector<char> Encode(int64 database_id,
- int64 object_store_id,
- const IndexedDBKey& user_key);
- int Compare(const ExistsEntryKey& other, bool& ok);
- scoped_ptr<IndexedDBKey> user_key() const;
-
- static const int64 kSpecialIndexNumber;
-
- private:
- std::vector<char> encoded_user_key_;
- DISALLOW_COPY_AND_ASSIGN(ExistsEntryKey);
-};
-
-class IndexDataKey {
- public:
- IndexDataKey();
- ~IndexDataKey();
- static const char* Decode(const char* start,
- const char* limit,
- IndexDataKey* result);
- CONTENT_EXPORT static std::vector<char> Encode(
- int64 database_id,
- int64 object_store_id,
- int64 index_id,
- const std::vector<char>& encoded_user_key,
- const std::vector<char>& encoded_primary_key,
- int64 sequence_number = 0);
- static std::vector<char> Encode(int64 database_id,
- int64 object_store_id,
- int64 index_id,
- const IndexedDBKey& user_key);
- static std::vector<char> EncodeMinKey(int64 database_id,
- int64 object_store_id,
- int64 index_id);
- CONTENT_EXPORT static std::vector<char> EncodeMaxKey(int64 database_id,
- int64 object_store_id,
- int64 index_id);
- int Compare(const IndexDataKey& other, bool ignore_duplicates, bool& ok);
- int64 DatabaseId() const;
- int64 ObjectStoreId() const;
- int64 IndexId() const;
- scoped_ptr<IndexedDBKey> user_key() const;
- scoped_ptr<IndexedDBKey> primary_key() const;
-
- private:
- int64 database_id_;
- int64 object_store_id_;
- int64 index_id_;
- std::vector<char> encoded_user_key_;
- std::vector<char> encoded_primary_key_;
- int64 sequence_number_;
-
- DISALLOW_COPY_AND_ASSIGN(IndexDataKey);
-};
-
-} // namespace content
-
-#endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_LEVELDB_CODING_H_
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