Esempio n. 1
0
void DatabaseSync::changeVersion(const String& oldVersion, const String& newVersion, PassOwnPtr<SQLTransactionSyncCallback> changeVersionCallback, ExceptionState& exceptionState)
{
    ASSERT(m_executionContext->isContextThread());

    if (sqliteDatabase().transactionInProgress()) {
        reportChangeVersionResult(1, SQLError::DATABASE_ERR, 0);
        setLastErrorMessage("unable to changeVersion from within a transaction");
        exceptionState.throwUninformativeAndGenericDOMException(SQLDatabaseError);
        return;
    }

    RefPtr<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("");
}
Esempio n. 2
0
void DatabaseSync::changeVersion(const String& oldVersion, const String& newVersion, PassRefPtr<SQLTransactionSyncCallback> changeVersionCallback, ExceptionCode& ec)
{
    ASSERT(m_scriptExecutionContext->isContextThread());

    if (sqliteDatabase().transactionInProgress()) {
        reportChangeVersionResult(1, SQLException::DATABASE_ERR, 0);
        setLastErrorMessage("unable to changeVersion from within a transaction");
        ec = SQLException::DATABASE_ERR;
        return;
    }

    RefPtr<SQLTransactionSync> transaction = SQLTransactionSync::create(this, changeVersionCallback, false);
    if ((ec = transaction->begin())) {
        ASSERT(!lastErrorMessage().isEmpty());
        return;
    }

    String actualVersion;
    if (!getVersionFromDatabase(actualVersion)) {
        reportChangeVersionResult(2, SQLException::UNKNOWN_ERR, sqliteDatabase().lastError());
        setLastErrorMessage("unable to read the current version", sqliteDatabase().lastError(), sqliteDatabase().lastErrorMsg());
        ec = SQLException::UNKNOWN_ERR;
        return;
    }

    if (actualVersion != oldVersion) {
        reportChangeVersionResult(3, SQLException::VERSION_ERR, 0);
        setLastErrorMessage("current version of the database and `oldVersion` argument do not match");
        ec = SQLException::VERSION_ERR;
        return;
    }

    if ((ec = transaction->execute())) {
        ASSERT(!lastErrorMessage().isEmpty());
        return;
    }

    if (!setVersionInDatabase(newVersion)) {
        reportChangeVersionResult(4, SQLException::UNKNOWN_ERR, sqliteDatabase().lastError());
        setLastErrorMessage("unable to set the new version", sqliteDatabase().lastError(), sqliteDatabase().lastErrorMsg());
        ec = SQLException::UNKNOWN_ERR;
        return;
    }

    if ((ec = transaction->commit())) {
        ASSERT(!lastErrorMessage().isEmpty());
        setCachedVersion(oldVersion);
        return;
    }

    reportChangeVersionResult(0, -1, 0); // OK

    setExpectedVersion(newVersion);
    setLastErrorMessage("");
}