1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 * Copyright (C) 2013 Apple Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1.  Redistributions of source code must retain the above copyright
10 *     notice, this list of conditions and the following disclaimer.
11 * 2.  Redistributions in binary form must reproduce the above copyright
12 *     notice, this list of conditions and the following disclaimer in the
13 *     documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
22 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28#include "IDBCursorBackendOperations.h"
29
30#include "IDBServerConnection.h"
31
32#if ENABLE(INDEXED_DATABASE)
33
34#include "Logging.h"
35
36namespace WebCore {
37
38void CursorAdvanceOperation::perform(std::function<void()> completionCallback)
39{
40    LOG(StorageAPI, "CursorAdvanceOperation");
41
42    RefPtr<CursorAdvanceOperation> operation(this);
43    auto callback = [this, operation, completionCallback](PassRefPtr<IDBKey> key, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer> valueBuffer, PassRefPtr<IDBDatabaseError> error) {
44        if (error) {
45            m_cursor->clear();
46            m_callbacks->onError(error);
47        } else if (!key) {
48            // If there's no error but also no key, then the cursor reached the end.
49            m_cursor->clear();
50            m_callbacks->onSuccess(static_cast<SharedBuffer*>(0));
51        } else {
52            m_cursor->updateCursorData(key.get(), primaryKey.get(), valueBuffer.get());
53            m_callbacks->onSuccess(key, primaryKey, valueBuffer);
54        }
55
56        // FIXME: Cursor operations should be able to pass along an error instead of success
57        completionCallback();
58    };
59
60    m_cursor->transaction().database().serverConnection().cursorAdvance(*m_cursor, *this, callback);
61}
62
63void CursorIterationOperation::perform(std::function<void()> completionCallback)
64{
65    LOG(StorageAPI, "CursorIterationOperation");
66
67    RefPtr<CursorIterationOperation> operation(this);
68    auto callback = [this, operation, completionCallback](PassRefPtr<IDBKey> key, PassRefPtr<IDBKey> primaryKey, PassRefPtr<SharedBuffer> valueBuffer, PassRefPtr<IDBDatabaseError> error) {
69        if (error) {
70            m_cursor->clear();
71            m_callbacks->onError(error);
72        } else if (!key) {
73            // If there's no error but also no key, then the cursor reached the end.
74            m_cursor->clear();
75            m_callbacks->onSuccess(static_cast<SharedBuffer*>(0));
76        } else {
77            m_cursor->updateCursorData(key.get(), primaryKey.get(), valueBuffer.get());
78            m_callbacks->onSuccess(key, primaryKey, valueBuffer);
79        }
80
81        // FIXME: Cursor operations should be able to pass along an error instead of success
82        completionCallback();
83    };
84
85    m_cursor->transaction().database().serverConnection().cursorIterate(*m_cursor, *this, callback);
86}
87
88} // namespace WebCore
89
90#endif // ENABLED(INDEXED_DATABASE)
91