How to delete all transactions from AX 2012

How to delete all transactions from AX 2012. Previously we were using SysDatabaseTransDelete class to do the same but as of now we need to modify that class to work properly with AX 2012 due to DB changes :

We need to modify the SysDatabaseTransDelete.handletable method with the below code :

void handleTable(SysDictTable sysDictTable)
{
    TableGroup      tableGroup;

    if (tableSet.in(sysDictTable.id()))
        return;
    tableSet.add(sysDictTable.id());

    if (sysDictTable && !sysDictTable.isTmp() && !sysDictTable.isMap())
    {
        tableGroup = sysDictTable.tableGroup();

        // Handle company specific tables to be deleted
        if (sysDictTable.dataPrCompany())
        {
            switch(tableGroup)
            {
                case TableGroup::Transaction:
                case TableGroup::WorksheetHeader:
                case TableGroup::WorksheetLine:
                //FIX - Support new AX2012 transaction table types
                case TableGroup::TransactionHeader:
                case TableGroup::TransactionLine:
                    this.handleTransTable(sysDictTable);
                    break;
                default:
                    this.handleNonTransTable(sysDictTable);
                    break;
            }
        }
        else
        {
            // Handle global tables to be deleted
            switch(tableGroup)
            {
                case TableGroup::Transaction:
                case TableGroup::WorksheetHeader:
                case TableGroup::WorksheetLine:
                //FIX - Support new AX2012 transaction table types
                case TableGroup::TransactionHeader:
                case TableGroup::TransactionLine:
                    this.handleGlobalTransTable(sysDictTable);
                    break;
                default:
                    break;
            }
        }
    }
}