2 * Copyright (C) 2007 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
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12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
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17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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32 #include "PlatformString.h"
33 #include "SecurityOrigin.h"
34 #include "SQLiteDatabase.h"
35 #include "SQLTransaction.h"
36 #include "StringHash.h"
37 #include "Threading.h"
39 #include "VoidCallback.h"
41 #include <wtf/Forward.h>
42 #include <wtf/HashSet.h>
43 #include <wtf/OwnPtr.h>
44 #include <wtf/PassRefPtr.h>
45 #include <wtf/RefPtr.h>
46 #include <wtf/Deque.h>
50 class DatabaseAuthorizer;
53 class SecurityOriginData;
55 class SQLTransactionCallback;
56 class SQLTransactionErrorCallback;
59 typedef int ExceptionCode;
61 class Database : public ThreadSafeShared<Database> {
62 friend class SQLStatement;
63 friend class SQLTransaction;
67 // Direct support for the DOM API
68 static PassRefPtr<Database> openDatabase(Document* document, const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize, ExceptionCode&);
69 String version() const;
70 void changeVersion(const String& oldVersion, const String& newVersion,
71 PassRefPtr<SQLTransactionCallback> callback, PassRefPtr<SQLTransactionErrorCallback> errorCallback,
72 PassRefPtr<VoidCallback> successCallback);
73 void transaction(PassRefPtr<SQLTransactionCallback> callback, PassRefPtr<SQLTransactionErrorCallback> errorCallback,
74 PassRefPtr<VoidCallback> successCallback);
76 // Internal engine support
77 void databaseThreadGoingAway();
78 static const String& databaseInfoTableName();
80 void disableAuthorizer();
81 void enableAuthorizer();
83 Vector<String> tableNames();
85 Document* document() const { return m_document; }
86 SecurityOriginData securityOriginData() const;
87 String stringIdentifier() const;
89 bool getVersionFromDatabase(String&);
90 bool setVersionInDatabase(const String&);
91 void setExpectedVersion(const String&);
92 bool versionMatchesExpected() const;
94 // Called from DatabaseThread, must be prepared to work on the background thread
95 void resetAuthorizer();
96 void performPolicyChecks();
98 bool performOpenAndVerify(ExceptionCode&);
100 void performTransactionStep();
102 Vector<String> performGetTableNames();
105 Database(Document* document, const String& name, const String& expectedVersion);
107 bool openAndVerifyVersion(ExceptionCode&);
109 void scheduleTransaction(PassRefPtr<SQLTransaction>);
110 void scheduleTransactionCallback(SQLTransaction*);
111 void scheduleTransactionStep();
113 Mutex m_transactionMutex;
114 Deque<RefPtr<SQLTransaction> > m_transactionQueue;
115 RefPtr<SQLTransaction> m_currentTransaction;
117 static void scheduleFileSizeTimerOnMainThread(Database*);
118 static void performScheduleFileSizeTimers();
119 void scheduleFileSizeTimer();
120 void sizeTimerFired(Timer<Database>*);
121 OwnPtr<Timer<Database> > m_sizeTimer;
123 static void deliverAllPendingCallbacks();
124 void deliverPendingCallback();
126 Document* m_document;
127 RefPtr<SecurityOrigin> m_securityOrigin;
130 String m_expectedVersion;
133 SQLiteDatabase m_sqliteDatabase;
134 RefPtr<DatabaseAuthorizer> m_databaseAuthorizer;
136 DatabaseThread* m_databaseThread;
138 Mutex m_callbackMutex;
139 RefPtr<SQLTransaction> m_transactionPendingCallback;
142 String databaseDebugName() const { return m_securityOrigin->toString() + "::" + m_name; }
145 static Mutex& globalCallbackMutex();
146 static HashSet<RefPtr<Database> >& globalCallbackSet();
147 static bool s_globalCallbackScheduled;
149 static int guidForOriginAndName(const String&, const String&);
151 static Mutex& guidMutex();
152 static HashMap<int, String>& guidToVersionMap();
153 static HashMap<int, HashSet<Database*>*>& guidToDatabaseMap();
156 } // namespace WebCore