1/* 2 * Copyright (C) 2012 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY GOOGLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#ifndef IDBDatabaseMetadata_h 30#define IDBDatabaseMetadata_h 31 32#include "IDBObjectStoreMetadata.h" 33 34#if ENABLE(INDEXED_DATABASE) 35 36namespace WebCore { 37 38struct IDBDatabaseMetadata { 39 40 // FIXME: These are only here to support the LevelDB backend which incorrectly handles versioning. 41 // Once LevelDB supports a single, uint64_t version and throws out the old string version, these 42 // should be gotten rid of. 43 // Also, "NoIntVersion" used to be a magic number of -1, which doesn't work with the new unsigned type. 44 // Changing the value to INT64_MAX here seems like a reasonable temporary fix as the current LevelDB 45 // already cannot represent valid version numbers between INT64_MAX and UINT64_MAX. 46 47#ifndef INT64_MAX 48#define INT64_MAX 9223372036854775807LL 49#endif 50 51 enum { 52 NoIntVersion = INT64_MAX, 53 DefaultIntVersion = 0 54 }; 55 56 IDBDatabaseMetadata() 57 : id(0) 58 , version(0) 59 , maxObjectStoreId(0) 60 { 61 } 62 63 IDBDatabaseMetadata(const String& name, int64_t id, uint64_t version, int64_t maxObjectStoreId) 64 : name(name) 65 , id(id) 66 , version(version) 67 , maxObjectStoreId(maxObjectStoreId) 68 { 69 } 70 71 String name; 72 int64_t id; 73 uint64_t version; 74 int64_t maxObjectStoreId; 75 76 typedef HashMap<int64_t, IDBObjectStoreMetadata> ObjectStoreMap; 77 ObjectStoreMap objectStores; 78 79 IDBDatabaseMetadata isolatedCopy() const; 80}; 81 82} // namespace WebCore 83 84#endif // ENABLE(INDEXED_DATABASE) 85#endif // IDBDatabaseMetadata_h 86