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/*
* 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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.
*/
#include "config.h"
#include "DatabaseSync.h"
#if ENABLE(DATABASE)
#include "DatabaseCallback.h"
#include "DatabaseTracker.h"
#include "Logging.h"
#include "SQLException.h"
#include "SQLTransactionSync.h"
#include "SQLTransactionSyncCallback.h"
#include "ScriptExecutionContext.h"
#include "SecurityOrigin.h"
#include <wtf/PassRefPtr.h>
#include <wtf/RefPtr.h>
namespace WebCore {
PassRefPtr<DatabaseSync> DatabaseSync::openDatabaseSync(ScriptExecutionContext* context, const String& name, const String& expectedVersion, const String& displayName,
unsigned long estimatedSize, PassRefPtr<DatabaseCallback> creationCallback, ExceptionCode& ec)
{
ASSERT(context->isContextThread());
if (!DatabaseTracker::tracker().canEstablishDatabase(context, name, displayName, estimatedSize)) {
LOG(StorageAPI, "Database %s for origin %s not allowed to be established", name.ascii().data(), context->securityOrigin()->toString().ascii().data());
return 0;
}
RefPtr<DatabaseSync> database = adoptRef(new DatabaseSync(context, name, expectedVersion, displayName, estimatedSize));
if (!database->performOpenAndVerify(!creationCallback, ec)) {
LOG(StorageAPI, "Failed to open and verify version (expected %s) of database %s", expectedVersion.ascii().data(), database->databaseDebugName().ascii().data());
DatabaseTracker::tracker().removeOpenDatabase(database.get());
return 0;
}
DatabaseTracker::tracker().setDatabaseDetails(context->securityOrigin(), name, displayName, estimatedSize);
if (database->isNew() && creationCallback.get()) {
database->m_expectedVersion = "";
LOG(StorageAPI, "Invoking the creation callback for database %p\n", database.get());
creationCallback->handleEvent(database.get());
}
return database;
}
DatabaseSync::DatabaseSync(ScriptExecutionContext* context, const String& name, const String& expectedVersion,
const String& displayName, unsigned long estimatedSize)
: AbstractDatabase(context, name, expectedVersion, displayName, estimatedSize)
{
}
DatabaseSync::~DatabaseSync()
{
ASSERT(m_scriptExecutionContext->isContextThread());
if (opened()) {
DatabaseTracker::tracker().removeOpenDatabase(this);
closeDatabase();
}
}
void DatabaseSync::changeVersion(const String& oldVersion, const String& newVersion, PassRefPtr<SQLTransactionSyncCallback> changeVersionCallback, ExceptionCode& ec)
{
ASSERT(m_scriptExecutionContext->isContextThread());
if (sqliteDatabase().transactionInProgress()) {
ec = SQLException::DATABASE_ERR;
return;
}
RefPtr<SQLTransactionSync> transaction = SQLTransactionSync::create(this, changeVersionCallback, false);
if ((ec = transaction->begin()))
return;
String actualVersion;
if (!getVersionFromDatabase(actualVersion)) {
ec = SQLException::UNKNOWN_ERR;
return;
}
if (actualVersion != oldVersion) {
ec = SQLException::VERSION_ERR;
return;
}
if ((ec = transaction->execute()))
return;
if (!setVersionInDatabase(newVersion)) {
ec = SQLException::UNKNOWN_ERR;
return;
}
if ((ec = transaction->commit()))
return;
setExpectedVersion(newVersion);
}
void DatabaseSync::transaction(PassRefPtr<SQLTransactionSyncCallback> callback, ExceptionCode& ec)
{
runTransaction(callback, false, ec);
}
void DatabaseSync::readTransaction(PassRefPtr<SQLTransactionSyncCallback> callback, ExceptionCode& ec)
{
runTransaction(callback, true, ec);
}
void DatabaseSync::runTransaction(PassRefPtr<SQLTransactionSyncCallback> callback, bool readOnly, ExceptionCode& ec)
{
ASSERT(m_scriptExecutionContext->isContextThread());
if (sqliteDatabase().transactionInProgress()) {
ec = SQLException::DATABASE_ERR;
return;
}
RefPtr<SQLTransactionSync> transaction = SQLTransactionSync::create(this, callback, readOnly);
if ((ec = transaction->begin()) || (ec = transaction->execute()) || (ec = transaction->commit()))
transaction->rollback();
}
void DatabaseSync::markAsDeletedAndClose()
{
// FIXME: need to do something similar to closeImmediately(), but in a sync way
}
class CloseSyncDatabaseOnContextThreadTask : public ScriptExecutionContext::Task {
public:
static PassOwnPtr<CloseSyncDatabaseOnContextThreadTask> create(PassRefPtr<DatabaseSync> database)
{
return adoptPtr(new CloseSyncDatabaseOnContextThreadTask(database));
}
virtual void performTask(ScriptExecutionContext*)
{
m_database->closeImmediately();
}
private:
CloseSyncDatabaseOnContextThreadTask(PassRefPtr<DatabaseSync> database)
: m_database(database)
{
}
RefPtr<DatabaseSync> m_database;
};
void DatabaseSync::closeImmediately()
{
if (!m_scriptExecutionContext->isContextThread()) {
m_scriptExecutionContext->postTask(CloseSyncDatabaseOnContextThreadTask::create(this));
return;
}
if (!opened())
return;
DatabaseTracker::tracker().removeOpenDatabase(this);
closeDatabase();
}
} // namespace WebCore
#endif // ENABLE(DATABASE)
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