Magento

addKey

$connection = $installer->getConnection();
$connection->addKey(
                TABLE_NAME,
                'IDX_ENTITY',
                array('entity_type_id', 'attribute_id', 'store_id', 'entity_id'),
                UNIQUE
            );

config.xml

 <events>
    <controller_front_send_response_before>
        <observers>
          <custom_module>
              <type>singleton</type>
                <class>custome_module/observer</class>
                <method>customRedirect</method>
          </custom_module>
        </observers>
    </controller_front_send_response_before>
  </events>

createOrder

// Create Order
$order = Mage::getModel('sales/order')
            ->setIncrementId($reservedOrderId)
            ->setStoreId($this->_storeId)
            ->setQuoteId(0)
            ->setGlobalCurrencyCode($currencyCode)
            ->setBaseCurrencyCode($currencyCode)
            ->setStoreCurrencyCode($currencyCode)
            ->setOrderCurrencyCode($currencyCode)
            ->setBaseToGlobalRate(1.0)   // In order to show it in Dashboard, this must set to 1.0
            ->setBaseToOrderRate(1.0);  

// Shipping
$order->setShippingAddress($shippingAddress)
                ->setShippingMethod('flatrate_flatrate')
                ->setShippingAmount(5)
                ->setBaseShippingAmount(5)
                ->setShippingDescription('flatrate');  // This must be set to show 'flatrate in order

Observer.php

<?php
class Custom_Module_Model_Observer {
    
    public function customRedirect() {
        $url = Mage::helper('core/url')->getCurrentUrl();
        $url = Mage::getSingleton('core/url')->parseUrl($url);
        $path = $url->getPath();
      
        $action = Mage::app()->getRequest()->getActionName();
        $pattern = '/[.*]?\/custommodule\/index\/[.*]?|[.*]?\/admin[$.*]?/';

        if (!(preg_match($pattern, $path, $matches) == 1) || $action == 'noRoute') {

            Mage::app()->getFrontController()->getResponse()->clearHeaders()->setRedirect(Mage::getUrl("custommodule/index/index"));

        // SSL
            // Mage::app()->getFrontController()->getResponse()->clearHeaders()->setRedirect(Mage::getUrl("customemodule/index/index", array('_forced_secure' => true)));
        }


    }


}