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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 "modules/webdatabase/DatabaseSync.h"
#include "bindings/core/v8/ExceptionState.h"
#include "core/dom/ExceptionCode.h"
#include "core/dom/ExecutionContext.h"
#include "platform/Logging.h"
#include "modules/webdatabase/DatabaseCallback.h"
#include "modules/webdatabase/DatabaseContext.h"
#include "modules/webdatabase/DatabaseManager.h"
#include "modules/webdatabase/DatabaseTracker.h"
#include "modules/webdatabase/SQLError.h"
#include "modules/webdatabase/SQLTransactionSync.h"
#include "modules/webdatabase/SQLTransactionSyncCallback.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefPtr.h"
#include "wtf/text/CString.h"
namespace blink {
PassRefPtrWillBeRawPtr<DatabaseSync> DatabaseSync::create(ExecutionContext*, PassRefPtrWillBeRawPtr<DatabaseBackendBase> backend)
{
return static_cast<DatabaseSync*>(backend.get());
}
DatabaseSync::DatabaseSync(DatabaseContext* databaseContext,
const String& name, const String& expectedVersion, const String& displayName, unsigned long estimatedSize)
: DatabaseBackendSync(databaseContext, name, expectedVersion, displayName, estimatedSize)
, DatabaseBase(databaseContext->executionContext())
{
ScriptWrappable::init(this);
setFrontend(this);
}
DatabaseSync::~DatabaseSync()
{
#if !ENABLE(OILPAN)
if (executionContext())
ASSERT(executionContext()->isContextThread());
#endif
}
void DatabaseSync::trace(Visitor* visitor)
{
DatabaseBackendSync::trace(visitor);
}
void DatabaseSync::changeVersion(const String& oldVersion, const String& newVersion, PassOwnPtr<SQLTransactionSyncCallback> changeVersionCallback, ExceptionState& exceptionState)
{
ASSERT(executionContext()->isContextThread());
if (sqliteDatabase().transactionInProgress()) {
reportChangeVersionResult(1, SQLError::DATABASE_ERR, 0);
setLastErrorMessage("unable to changeVersion from within a transaction");
exceptionState.throwDOMException(SQLDatabaseError, "Unable to change version from within a transaction.");
return;
}
RefPtrWillBeRawPtr<SQLTransactionSync> transaction = SQLTransactionSync::create(this, changeVersionCallback, false);
transaction->begin(exceptionState);
if (exceptionState.hadException()) {
ASSERT(!lastErrorMessage().isEmpty());
return;
}
String actualVersion;
if (!getVersionFromDatabase(actualVersion)) {
reportChangeVersionResult(2, SQLError::UNKNOWN_ERR, sqliteDatabase().lastError());
setLastErrorMessage("unable to read the current version", sqliteDatabase().lastError(), sqliteDatabase().lastErrorMsg());
exceptionState.throwDOMException(UnknownError, SQLError::unknownErrorMessage);
return;
}
if (actualVersion != oldVersion) {
reportChangeVersionResult(3, SQLError::VERSION_ERR, 0);
setLastErrorMessage("current version of the database and `oldVersion` argument do not match");
exceptionState.throwDOMException(VersionError, SQLError::versionErrorMessage);
return;
}
transaction->execute(exceptionState);
if (exceptionState.hadException()) {
ASSERT(!lastErrorMessage().isEmpty());
return;
}
if (!setVersionInDatabase(newVersion)) {
reportChangeVersionResult(4, SQLError::UNKNOWN_ERR, sqliteDatabase().lastError());
setLastErrorMessage("unable to set the new version", sqliteDatabase().lastError(), sqliteDatabase().lastErrorMsg());
exceptionState.throwDOMException(UnknownError, SQLError::unknownErrorMessage);
return;
}
transaction->commit(exceptionState);
if (exceptionState.hadException()) {
ASSERT(!lastErrorMessage().isEmpty());
setCachedVersion(oldVersion);
return;
}
reportChangeVersionResult(0, -1, 0); // OK
setExpectedVersion(newVersion);
setLastErrorMessage("");
}
void DatabaseSync::transaction(PassOwnPtr<SQLTransactionSyncCallback> callback, ExceptionState& exceptionState)
{
runTransaction(callback, false, exceptionState);
}
void DatabaseSync::readTransaction(PassOwnPtr<SQLTransactionSyncCallback> callback, ExceptionState& exceptionState)
{
runTransaction(callback, true, exceptionState);
}
void DatabaseSync::rollbackTransaction(SQLTransactionSync& transaction)
{
ASSERT(!lastErrorMessage().isEmpty());
transaction.rollback();
setLastErrorMessage("");
return;
}
void DatabaseSync::runTransaction(PassOwnPtr<SQLTransactionSyncCallback> callback, bool readOnly, ExceptionState& exceptionState)
{
ASSERT(executionContext()->isContextThread());
if (sqliteDatabase().transactionInProgress()) {
setLastErrorMessage("unable to start a transaction from within a transaction");
exceptionState.throwDOMException(SQLDatabaseError, "Unable to start a transaction from within a transaction.");
return;
}
RefPtrWillBeRawPtr<SQLTransactionSync> transaction = SQLTransactionSync::create(this, callback, readOnly);
transaction->begin(exceptionState);
if (exceptionState.hadException()) {
rollbackTransaction(*transaction);
return;
}
transaction->execute(exceptionState);
if (exceptionState.hadException()) {
rollbackTransaction(*transaction);
return;
}
transaction->commit(exceptionState);
if (exceptionState.hadException()) {
rollbackTransaction(*transaction);
return;
}
setLastErrorMessage("");
}
void DatabaseSync::closeImmediately()
{
ASSERT(executionContext()->isContextThread());
if (!opened())
return;
logErrorMessage("forcibly closing database");
closeDatabase();
}
void DatabaseSync::observeTransaction(SQLTransactionSync& transaction)
{
#if ENABLE(OILPAN)
m_observers.add(&transaction, adoptPtr(new TransactionObserver(transaction)));
#endif
}
#if ENABLE(OILPAN)
DatabaseSync::TransactionObserver::~TransactionObserver()
{
m_transaction.rollbackIfInProgress();
}
#endif
} // namespace blink