summaryrefslogtreecommitdiffstats
path: root/dom/indexedDB/IDBDatabase.h
blob: e61d5a30d7b14bb49dcd44711454633b4fd50c30 (plain)
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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#ifndef mozilla_dom_idbdatabase_h__
#define mozilla_dom_idbdatabase_h__

#include "mozilla/Attributes.h"
#include "mozilla/dom/IDBTransactionBinding.h"
#include "mozilla/dom/StorageTypeBinding.h"
#include "mozilla/dom/IDBWrapperCache.h"
#include "mozilla/dom/quota/PersistenceType.h"
#include "nsAutoPtr.h"
#include "nsDataHashtable.h"
#include "nsHashKeys.h"
#include "nsString.h"
#include "nsTHashtable.h"

class nsIDocument;
class nsPIDOMWindowInner;

namespace mozilla {

class ErrorResult;
class EventChainPostVisitor;

namespace dom {

class Blob;
class DOMStringList;
class IDBFactory;
class IDBMutableFile;
class IDBObjectStore;
struct IDBObjectStoreParameters;
class IDBOpenDBRequest;
class IDBRequest;
class IDBTransaction;
template <class> class Optional;
class StringOrStringSequence;

namespace indexedDB {
class BackgroundDatabaseChild;
class DatabaseSpec;
class PBackgroundIDBDatabaseFileChild;
}

class IDBDatabase final
  : public IDBWrapperCache
{
  typedef mozilla::dom::indexedDB::DatabaseSpec DatabaseSpec;
  typedef mozilla::dom::StorageType StorageType;
  typedef mozilla::dom::quota::PersistenceType PersistenceType;

  class Observer;
  friend class Observer;

  friend class IDBObjectStore;
  friend class IDBIndex;

  // The factory must be kept alive when IndexedDB is used in multiple
  // processes. If it dies then the entire actor tree will be destroyed with it
  // and the world will explode.
  RefPtr<IDBFactory> mFactory;

  nsAutoPtr<DatabaseSpec> mSpec;

  // Normally null except during a versionchange transaction.
  nsAutoPtr<DatabaseSpec> mPreviousSpec;

  indexedDB::BackgroundDatabaseChild* mBackgroundActor;

  nsTHashtable<nsPtrHashKey<IDBTransaction>> mTransactions;

  nsDataHashtable<nsISupportsHashKey, indexedDB::PBackgroundIDBDatabaseFileChild*>
    mFileActors;

  nsTHashtable<nsISupportsHashKey> mReceivedBlobs;

  RefPtr<Observer> mObserver;

  // Weak refs, IDBMutableFile strongly owns this IDBDatabase object.
  nsTArray<IDBMutableFile*> mLiveMutableFiles;

  const bool mFileHandleDisabled;
  bool mClosed;
  bool mInvalidated;
  bool mQuotaExceeded;

public:
  static already_AddRefed<IDBDatabase>
  Create(IDBOpenDBRequest* aRequest,
         IDBFactory* aFactory,
         indexedDB::BackgroundDatabaseChild* aActor,
         DatabaseSpec* aSpec);

#ifdef DEBUG
  void
  AssertIsOnOwningThread() const;

  PRThread*
  OwningThread() const;
#else
  void
  AssertIsOnOwningThread() const
  { }
#endif

  const nsString&
  Name() const;

  void
  GetName(nsAString& aName) const
  {
    AssertIsOnOwningThread();

    aName = Name();
  }

  uint64_t
  Version() const;

  already_AddRefed<nsIDocument>
  GetOwnerDocument() const;

  void
  Close()
  {
    AssertIsOnOwningThread();

    CloseInternal();
  }

  bool
  IsClosed() const
  {
    AssertIsOnOwningThread();

    return mClosed;
  }

  void
  Invalidate();

  // Whether or not the database has been invalidated. If it has then no further
  // transactions for this database will be allowed to run.
  bool
  IsInvalidated() const
  {
    AssertIsOnOwningThread();

    return mInvalidated;
  }

  void
  SetQuotaExceeded()
  {
    mQuotaExceeded = true;
  }

  void
  EnterSetVersionTransaction(uint64_t aNewVersion);

  void
  ExitSetVersionTransaction();

  // Called when a versionchange transaction is aborted to reset the
  // DatabaseInfo.
  void
  RevertToPreviousState();

  IDBFactory*
  Factory() const
  {
    AssertIsOnOwningThread();

    return mFactory;
  }

  void
  RegisterTransaction(IDBTransaction* aTransaction);

  void
  UnregisterTransaction(IDBTransaction* aTransaction);

  void
  AbortTransactions(bool aShouldWarn);

  indexedDB::PBackgroundIDBDatabaseFileChild*
  GetOrCreateFileActorForBlob(Blob* aBlob);

  void
  NoteFinishedFileActor(indexedDB::PBackgroundIDBDatabaseFileChild* aFileActor);

  void
  NoteReceivedBlob(Blob* aBlob);

  void
  DelayedMaybeExpireFileActors();

  // XXX This doesn't really belong here... It's only needed for IDBMutableFile
  //     serialization and should be removed or fixed someday.
  nsresult
  GetQuotaInfo(nsACString& aOrigin, PersistenceType* aPersistenceType);

  bool
  IsFileHandleDisabled() const
  {
    return mFileHandleDisabled;
  }

  void
  NoteLiveMutableFile(IDBMutableFile* aMutableFile);

  void
  NoteFinishedMutableFile(IDBMutableFile* aMutableFile);

  nsPIDOMWindowInner*
  GetParentObject() const;

  already_AddRefed<DOMStringList>
  ObjectStoreNames() const;

  already_AddRefed<IDBObjectStore>
  CreateObjectStore(const nsAString& aName,
                    const IDBObjectStoreParameters& aOptionalParameters,
                    ErrorResult& aRv);

  void
  DeleteObjectStore(const nsAString& name, ErrorResult& aRv);

  // This will be called from the DOM.
  already_AddRefed<IDBTransaction>
  Transaction(JSContext* aCx,
              const StringOrStringSequence& aStoreNames,
              IDBTransactionMode aMode,
              ErrorResult& aRv);

  // This can be called from C++ to avoid JS exception.
  nsresult
  Transaction(JSContext* aCx,
              const StringOrStringSequence& aStoreNames,
              IDBTransactionMode aMode,
              IDBTransaction** aTransaction);

  StorageType
  Storage() const;

  IMPL_EVENT_HANDLER(abort)
  IMPL_EVENT_HANDLER(close)
  IMPL_EVENT_HANDLER(error)
  IMPL_EVENT_HANDLER(versionchange)

  already_AddRefed<IDBRequest>
  CreateMutableFile(JSContext* aCx,
                    const nsAString& aName,
                    const Optional<nsAString>& aType,
                    ErrorResult& aRv);

  already_AddRefed<IDBRequest>
  MozCreateFileHandle(JSContext* aCx,
                      const nsAString& aName,
                      const Optional<nsAString>& aType,
                      ErrorResult& aRv)
  {
    return CreateMutableFile(aCx, aName, aType, aRv);
  }

  void
  ClearBackgroundActor()
  {
    AssertIsOnOwningThread();

    mBackgroundActor = nullptr;
  }

  const DatabaseSpec*
  Spec() const
  {
    return mSpec;
  }

  NS_DECL_ISUPPORTS_INHERITED
  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(IDBDatabase, IDBWrapperCache)

  // nsIDOMEventTarget
  virtual void
  LastRelease() override;

  virtual nsresult
  PostHandleEvent(EventChainPostVisitor& aVisitor) override;

  // nsWrapperCache
  virtual JSObject*
  WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;

private:
  IDBDatabase(IDBOpenDBRequest* aRequest,
              IDBFactory* aFactory,
              indexedDB::BackgroundDatabaseChild* aActor,
              DatabaseSpec* aSpec);

  ~IDBDatabase();

  void
  CloseInternal();

  void
  InvalidateInternal();

  bool
  RunningVersionChangeTransaction() const
  {
    AssertIsOnOwningThread();

    return !!mPreviousSpec;
  }

  void
  RefreshSpec(bool aMayDelete);

  void
  ExpireFileActors(bool aExpireAll);

  void
  InvalidateMutableFiles();

  void
  LogWarning(const char* aMessageName,
             const nsAString& aFilename,
             uint32_t aLineNumber,
             uint32_t aColumnNumber);

  // Only accessed by IDBObjectStore.
  nsresult
  RenameObjectStore(int64_t aObjectStoreId, const nsAString& aName);

  // Only accessed by IDBIndex.
  nsresult
  RenameIndex(int64_t aObjectStoreId, int64_t aIndexId, const nsAString& aName);
};

} // namespace dom
} // namespace mozilla

#endif // mozilla_dom_idbdatabase_h__