1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
// 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_CURSOR_H_
#define CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_H_
#include <string>
#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "content/browser/indexed_db/indexed_db_backing_store.h"
#include "content/browser/indexed_db/indexed_db_database.h"
#include "content/common/indexed_db/indexed_db_key_range.h"
#include "third_party/WebKit/public/platform/WebIDBTypes.h"
namespace content {
class IndexedDBTransaction;
class CONTENT_EXPORT IndexedDBCursor
: NON_EXPORTED_BASE(public base::RefCounted<IndexedDBCursor>) {
public:
IndexedDBCursor(scoped_ptr<IndexedDBBackingStore::Cursor> cursor,
indexed_db::CursorType cursor_type,
blink::WebIDBTaskType task_type,
IndexedDBTransaction* transaction);
void Advance(uint32 count, scoped_refptr<IndexedDBCallbacks> callbacks);
void Continue(scoped_ptr<IndexedDBKey> key,
scoped_ptr<IndexedDBKey> primary_key,
scoped_refptr<IndexedDBCallbacks> callbacks);
void PrefetchContinue(int number_to_fetch,
scoped_refptr<IndexedDBCallbacks> callbacks);
leveldb::Status PrefetchReset(int used_prefetches, int unused_prefetches);
const IndexedDBKey& key() const { return cursor_->key(); }
const IndexedDBKey& primary_key() const { return cursor_->primary_key(); }
IndexedDBValue* Value() const {
return (cursor_type_ == indexed_db::CURSOR_KEY_ONLY) ? NULL
: cursor_->value();
}
void Close();
void CursorIterationOperation(scoped_ptr<IndexedDBKey> key,
scoped_ptr<IndexedDBKey> primary_key,
scoped_refptr<IndexedDBCallbacks> callbacks,
IndexedDBTransaction* transaction);
void CursorAdvanceOperation(uint32 count,
scoped_refptr<IndexedDBCallbacks> callbacks,
IndexedDBTransaction* transaction);
void CursorPrefetchIterationOperation(
int number_to_fetch,
scoped_refptr<IndexedDBCallbacks> callbacks,
IndexedDBTransaction* transaction);
private:
friend class base::RefCounted<IndexedDBCursor>;
~IndexedDBCursor();
blink::WebIDBTaskType task_type_;
indexed_db::CursorType cursor_type_;
const scoped_refptr<IndexedDBTransaction> transaction_;
// Must be destroyed before transaction_.
scoped_ptr<IndexedDBBackingStore::Cursor> cursor_;
// Must be destroyed before transaction_.
scoped_ptr<IndexedDBBackingStore::Cursor> saved_cursor_;
bool closed_;
DISALLOW_COPY_AND_ASSIGN(IndexedDBCursor);
};
} // namespace content
#endif // CONTENT_BROWSER_INDEXED_DB_INDEXED_DB_CURSOR_H_
|
