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30 #include "modules/webdatabase/DatabaseTask.h"
32 #include "platform/Logging.h"
33 #include "modules/webdatabase/Database.h"
34 #include "modules/webdatabase/DatabaseContext.h"
35 #include "modules/webdatabase/DatabaseThread.h"
39 DatabaseTask::DatabaseTask(DatabaseBackend* database, TaskSynchronizer* synchronizer)
40 : m_database(database)
41 , m_synchronizer(synchronizer)
48 DatabaseTask::~DatabaseTask()
51 ASSERT(m_complete || !m_synchronizer);
55 void DatabaseTask::run()
57 // Database tasks are meant to be used only once, so make sure this one hasn't been performed before.
62 if (!m_synchronizer && !m_database->databaseContext()->databaseThread()->isDatabaseOpen(m_database.get())) {
70 WTF_LOG(StorageAPI, "Performing %s %p\n", debugTaskName(), this);
72 m_database->resetAuthorizer();
76 m_synchronizer->taskCompleted();
83 // *** DatabaseOpenTask ***
84 // Opens the database file and verifies the version matches the expected version.
86 DatabaseBackend::DatabaseOpenTask::DatabaseOpenTask(DatabaseBackend* database, bool setVersionInNewDatabase, TaskSynchronizer* synchronizer, DatabaseError& error, String& errorMessage, bool& success)
87 : DatabaseTask(database, synchronizer)
88 , m_setVersionInNewDatabase(setVersionInNewDatabase)
90 , m_errorMessage(errorMessage)
93 ASSERT(synchronizer); // A task with output parameters is supposed to be synchronous.
96 void DatabaseBackend::DatabaseOpenTask::doPerformTask()
99 m_success = database()->performOpenAndVerify(m_setVersionInNewDatabase, m_error, errorMessage);
101 m_errorMessage = errorMessage.isolatedCopy();
105 const char* DatabaseBackend::DatabaseOpenTask::debugTaskName() const
107 return "DatabaseOpenTask";
111 // *** DatabaseCloseTask ***
112 // Closes the database.
114 DatabaseBackend::DatabaseCloseTask::DatabaseCloseTask(DatabaseBackend* database, TaskSynchronizer* synchronizer)
115 : DatabaseTask(database, synchronizer)
119 void DatabaseBackend::DatabaseCloseTask::doPerformTask()
121 Database::from(database())->close();
125 const char* DatabaseBackend::DatabaseCloseTask::debugTaskName() const
127 return "DatabaseCloseTask";
131 // *** DatabaseTransactionTask ***
132 // Starts a transaction that will report its results via a callback.
134 DatabaseBackend::DatabaseTransactionTask::DatabaseTransactionTask(PassRefPtrWillBeRawPtr<SQLTransactionBackend> transaction)
135 : DatabaseTask(Database::from(transaction->database()), 0)
136 , m_transaction(transaction)
140 DatabaseBackend::DatabaseTransactionTask::~DatabaseTransactionTask()
144 void DatabaseBackend::DatabaseTransactionTask::doPerformTask()
146 m_transaction->performNextStep();
149 void DatabaseBackend::DatabaseTransactionTask::taskCancelled()
151 // If the task is being destructed without the transaction ever being run,
152 // then we must either have an error or an interruption. Give the
153 // transaction a chance to clean up since it may not have been able to
154 // run to its clean up state.
156 // Transaction phase 2 cleanup. See comment on "What happens if a
157 // transaction is interrupted?" at the top of SQLTransactionBackend.cpp.
159 m_transaction->notifyDatabaseThreadIsShuttingDown();
163 const char* DatabaseBackend::DatabaseTransactionTask::debugTaskName() const
165 return "DatabaseTransactionTask";
169 // *** DatabaseTableNamesTask ***
170 // Retrieves a list of all tables in the database - for WebInspector support.
172 DatabaseBackend::DatabaseTableNamesTask::DatabaseTableNamesTask(DatabaseBackend* database, TaskSynchronizer* synchronizer, Vector<String>& names)
173 : DatabaseTask(database, synchronizer)
174 , m_tableNames(names)
176 ASSERT(synchronizer); // A task with output parameters is supposed to be synchronous.
179 void DatabaseBackend::DatabaseTableNamesTask::doPerformTask()
181 m_tableNames = Database::from(database())->performGetTableNames();
185 const char* DatabaseBackend::DatabaseTableNamesTask::debugTaskName() const
187 return "DatabaseTableNamesTask";
191 } // namespace WebCore