1/*
2 * Copyright (C) 2013, 2016 Apple 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 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#if ENABLE(INDEXED_DATABASE)
29
30#include "IDBError.h"
31#include "IDBResourceIdentifier.h"
32#include "IDBTransactionInfo.h"
33#include "IndexedDB.h"
34#include <wtf/HashMap.h>
35#include <wtf/HashSet.h>
36#include <wtf/Noncopyable.h>
37
38namespace WebCore {
39
40class IDBCursorInfo;
41class SQLiteDatabase;
42class SQLiteTransaction;
43struct IDBKeyRangeData;
44
45namespace IDBServer {
46
47class SQLiteIDBBackingStore;
48class SQLiteIDBCursor;
49
50class SQLiteIDBTransaction {
51 WTF_MAKE_FAST_ALLOCATED;
52 WTF_MAKE_NONCOPYABLE(SQLiteIDBTransaction);
53public:
54 SQLiteIDBTransaction(SQLiteIDBBackingStore&, const IDBTransactionInfo&);
55 ~SQLiteIDBTransaction();
56
57 const IDBResourceIdentifier& transactionIdentifier() const { return m_info.identifier(); }
58
59 IDBError begin(SQLiteDatabase&);
60 IDBError commit();
61 IDBError abort();
62
63 std::unique_ptr<SQLiteIDBCursor> maybeOpenBackingStoreCursor(uint64_t objectStoreID, uint64_t indexID, const IDBKeyRangeData&);
64 SQLiteIDBCursor* maybeOpenCursor(const IDBCursorInfo&);
65
66 void closeCursor(SQLiteIDBCursor&);
67 void notifyCursorsOfChanges(int64_t objectStoreID);
68
69 IDBTransactionMode mode() const { return m_info.mode(); }
70 bool inProgress() const;
71
72 SQLiteTransaction* sqliteTransaction() const { return m_sqliteTransaction.get(); }
73 SQLiteIDBBackingStore& backingStore() { return m_backingStore; }
74
75 void addBlobFile(const String& temporaryPath, const String& storedFilename);
76 void addRemovedBlobFile(const String& removedFilename);
77
78private:
79 void clearCursors();
80 void reset();
81
82 void moveBlobFilesIfNecessary();
83 void deleteBlobFilesIfNecessary();
84
85 IDBTransactionInfo m_info;
86
87 SQLiteIDBBackingStore& m_backingStore;
88 std::unique_ptr<SQLiteTransaction> m_sqliteTransaction;
89 HashMap<IDBResourceIdentifier, std::unique_ptr<SQLiteIDBCursor>> m_cursors;
90 HashSet<SQLiteIDBCursor*> m_backingStoreCursors;
91 Vector<std::pair<String, String>> m_blobTemporaryAndStoredFilenames;
92 HashSet<String> m_blobRemovedFilenames;
93};
94
95} // namespace IDBServer
96} // namespace WebCore
97
98#endif // ENABLE(INDEXED_DATABASE)
99