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
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef IDBTransaction_h
#define IDBTransaction_h
#if ENABLE(INDEXED_DATABASE)
#include "ActiveDOMObject.h"
#include "DOMError.h"
#include "DOMStringList.h"
#include "Event.h"
#include "EventListener.h"
#include "EventNames.h"
#include "EventTarget.h"
#include "IDBTransactionBackendInterface.h"
#include "IDBTransactionCallbacks.h"
#include <wtf/HashSet.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class IDBCursor;
class IDBDatabase;
class IDBObjectStore;
class IDBTransaction : public IDBTransactionCallbacks, public EventTarget, public ActiveDOMObject {
public:
static PassRefPtr<IDBTransaction> create(ScriptExecutionContext*, PassRefPtr<IDBTransactionBackendInterface>, IDBDatabase*);
virtual ~IDBTransaction();
enum Mode {
READ_ONLY = 0,
READ_WRITE = 1,
VERSION_CHANGE = 2
};
static const AtomicString& modeReadOnly();
static const AtomicString& modeReadWrite();
static const AtomicString& modeVersionChange();
static const AtomicString& modeReadOnlyLegacy();
static const AtomicString& modeReadWriteLegacy();
static unsigned short stringToMode(const String&, ExceptionCode&);
static const AtomicString& modeToString(unsigned short, ExceptionCode&);
IDBTransactionBackendInterface* backend() const;
bool isFinished() const;
const String& mode() const;
IDBDatabase* db() const;
PassRefPtr<DOMError> error(ExceptionCode&) const;
void setError(PassRefPtr<DOMError>);
PassRefPtr<IDBObjectStore> objectStore(const String& name, ExceptionCode&);
void abort();
class OpenCursorNotifier {
public:
OpenCursorNotifier(PassRefPtr<IDBTransaction>, IDBCursor*);
~OpenCursorNotifier();
private:
RefPtr<IDBTransaction> m_transaction;
IDBCursor* m_cursor;
};
void registerRequest(IDBRequest*);
void unregisterRequest(IDBRequest*);
void objectStoreCreated(const String&, PassRefPtr<IDBObjectStore>);
void objectStoreDeleted(const String&);
DEFINE_ATTRIBUTE_EVENT_LISTENER(abort);
DEFINE_ATTRIBUTE_EVENT_LISTENER(complete);
DEFINE_ATTRIBUTE_EVENT_LISTENER(error);
// IDBTransactionCallbacks
virtual void onAbort();
virtual void onComplete();
// EventTarget
virtual const AtomicString& interfaceName() const;
virtual ScriptExecutionContext* scriptExecutionContext() const;
virtual bool dispatchEvent(PassRefPtr<Event>);
bool dispatchEvent(PassRefPtr<Event> event, ExceptionCode& ec) { return EventTarget::dispatchEvent(event, ec); }
// ActiveDOMObject
virtual bool hasPendingActivity() const OVERRIDE;
virtual bool canSuspend() const OVERRIDE;
virtual void stop() OVERRIDE;
using RefCounted<IDBTransactionCallbacks>::ref;
using RefCounted<IDBTransactionCallbacks>::deref;
private:
IDBTransaction(ScriptExecutionContext*, PassRefPtr<IDBTransactionBackendInterface>, IDBDatabase*);
void enqueueEvent(PassRefPtr<Event>);
void closeOpenCursors();
void registerOpenCursor(IDBCursor*);
void unregisterOpenCursor(IDBCursor*);
// EventTarget
virtual void refEventTarget() { ref(); }
virtual void derefEventTarget() { deref(); }
virtual EventTargetData* eventTargetData();
virtual EventTargetData* ensureEventTargetData();
RefPtr<IDBTransactionBackendInterface> m_backend;
RefPtr<IDBDatabase> m_database;
const unsigned short m_mode;
bool m_transactionFinished; // Is it possible that we'll fire any more events or allow any new requests? If not, we're finished.
bool m_contextStopped;
RefPtr<DOMError> m_error;
ListHashSet<IDBRequest*> m_childRequests;
typedef HashMap<String, RefPtr<IDBObjectStore> > IDBObjectStoreMap;
IDBObjectStoreMap m_objectStoreMap;
HashSet<IDBCursor*> m_openCursors;
EventTargetData m_eventTargetData;
};
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
#endif // IDBTransaction_h
|
