Subversion Repositories SmartDukaan

'''

Created on 29-Mar-2010

@author: ashish

'''

from shop2020.model.v1.order.impl import DataService

from shop2020.model.v1.order.impl.DataAccessors import create_transaction,\

    create_order, get_new_transaction, get_transactions_for_customer, get_transaction_status,\

    get_line_items_for_order, get_transaction, get_transactions_for_shopping_cart_id,\

    change_transaction_status, get_orders_for_customer,get_orders_for_transaction, get_order,\

    get_returnable_orders_for_customer, get_cancellable_orders_for_customer, get_orders_by_billing_date,\

    get_all_orders, change_order_status, get_alerts, add_alert, add_billing_details,\

    mark_orders_as_manifested, close_session, accept_order, mark_orders_as_picked_up,\

    mark_orders_as_delivered, mark_orders_as_failed,\

    order_outofstock, batch_orders, update_non_delivery_reason, enqueue_transaction_info_email,\

    get_undelivered_orders, get_order_for_customer, get_valid_order_count,\

    get_cust_count_with_successful_txn, get_valid_orders_amount_range,\

    get_valid_orders, toggle_doa_flag, request_pickup_number, authorize_pickup,\

    receive_return, validate_doa, reship_order, refund_order, get_return_orders,\

    process_return, get_return_order, mark_doas_as_picked_up,\

    create_purchase_order, verify_order, is_alive, get_orders_by_shipping_date,\

    update_weight, change_warehouse, change_product, add_delay_reason,\

    reconcile_cod_collection, get_transactions_requiring_extra_processing,\

    mark_transaction_as_processed, get_item_wise_risky_orders_count,\

    get_orders_in_batch, get_order_count,\

    mark_order_cancellation_request_received,\

    mark_order_cancellation_request_denied, refund_transaction,\

    mark_order_cancellation_request_confirmed,\

    mark_transaction_as_payment_flag_removed, accept_orders_for_item_id,\

    mark_orders_as_po_raised, mark_orders_as_reversal_initiated,\

    mark_orders_as_not_available, update_shipment_address,\

    mark_orders_as_timeout, get_order_for_awb,\

    mark_orders_as_shipped_from_warehouse, mark_alerts_as_seen, \

    mark_order_doa_request_received, mark_order_doa_request_authorized,\

    mark_order_return_request_received, mark_order_return_request_authorized,\

    validate_return_product

from shop2020.model.v1.order.impl.Convertors import to_t_transaction,\

    to_t_alert, to_t_order, to_t_lineitem

from shop2020.thriftpy.model.v1.order.ttypes import Transaction, OrderStatus,\

    LineItem, Order, TransactionServiceException

from shop2020.utils.Utils import to_py_date, get_fdate_tdate

class OrderServiceHandler:

    def __init__(self, dbname='transaction', db_hostname='localhost'):

        """

        Constructor

        """

        DataService.initialize(dbname, db_hostname)

    def createTransaction(self, transaction):

        """

        Parameters:

         - transaction

        """

        try:

            return create_transaction(transaction)

        finally:

            close_session()

    def getTransaction(self, id):

        """

            Get transaction methods.

        Parameters:

         - id

        """

        try:

            transaction = get_transaction(id)

            return to_t_transaction(transaction)

        finally:

            close_session()

    def getTransactionsForCustomer(self, customerId, from_date, to_date, status):

        """

        Parameters:

         - customerId

         - from_date

         - to_date

         - status

        """

        try:

            current_from_date, current_to_date = get_fdate_tdate(from_date, to_date)

            transactions = get_transactions_for_customer(customerId, current_from_date, current_to_date, status)

            t_transaction = []

            for transaction in transactions:

                t_transaction.append(to_t_transaction(transaction))

            return t_transaction

        finally:

            close_session()

    def getTransactionsForShoppingCartId(self, shoppingCartId):

        """

        Parameters:

            - shoppingCartId

        """

        try:

            transactions = get_transactions_for_shopping_cart_id(shoppingCartId)

            t_transaction = []

            for transaction in transactions:

                t_transaction.append(to_t_transaction(transaction))

            return t_transaction

        finally:

            close_session()

    def getTransactionStatus(self, transactionId):

        """

        Parameters:

         - transactionId

        """

        try:

            return get_transaction_status(transactionId)

        finally:

            close_session()

    def changeTransactionStatus(self, transactionId, status, description):

        """

        Parameters:

         - transactionId

         - status

         - description

        """

        try:

            return change_transaction_status(transactionId, status, description)

        finally:

            close_session()

    def getOrdersForTransaction(self, transactionId, customerId):

        """

        Returns list of orders for given transaction Id. Also filters based on customer Id so that

        only user who owns the transaction can view its order details.

        Parameters:

         - transactionId

         - customerId

        """

        try:

            orders = get_orders_for_transaction(transactionId, customerId)

            return [to_t_order(order) for order in orders]    

        finally:

            close_session()

    def getAllOrders(self, status, from_date, to_date, warehouse_id):

        """

        Parameters:

         - status

         - from_date

         - to_date

         - warehouse_id

        """

        try:

            current_from_date, current_to_date = get_fdate_tdate(from_date, to_date)        

            orders = get_all_orders(status, current_from_date, current_to_date, warehouse_id)

            return [to_t_order(order) for order in orders]

        finally:

            close_session()

    def getOrdersInBatch(self, statuses, offset, limit, warehouse_id):

        """

        Returns at most 'limit' orders with the given statuses for the given warehouse starting from the given offset.

        Pass the status as null and the limit as 0 to ignore them.

        Parameters:

         - statuses

         - offset

         - limit

         - warehouse_id

        """

        try:

            orders = get_orders_in_batch(statuses, offset, limit, warehouse_id)

            return [to_t_order(order) for order in orders]

        finally:

            close_session()

    def getOrderCount(self, statuses, warehouseId):

        """

        Returns the count of orders with the given statuses assigned to the given warehouse.

        Parameters:

         - statuses

         - warehouseId

        """

        try:

            return get_order_count(statuses, warehouseId)

        finally:

            close_session()

    def getOrdersByBillingDate(self, status, start_billing_date, end_billing_date, warehouse_id):

        """

        Parameters:

         - status

         - start_billing_date

         - end_billing_date

         - warehouse_id

        """

        try:

            current_start_billing_date, current_end_billing_date = get_fdate_tdate(start_billing_date, end_billing_date)

            orders = get_orders_by_billing_date(status, current_start_billing_date, current_end_billing_date, warehouse_id)

            return [to_t_order(order) for order in orders]

        finally:

            close_session()

    def getOrdersByShippingDate(self, fromShippingDate, toShippingDate, providerId, warehouseId, cod):

        """

        Returns orders for a particular provider and warehouse which were shipped between the given dates.

        Returned orders comprise of COD orders if cod parameter is true. It comprises of prepaid orders otherwise.

        Pass providerId and warehouseId as -1 to ignore both these parameters.

        Parameters:

         - fromShippingDate

         - toShippingDate

         - providerId

         - warehouseId

         - cod

        """

        try:

            from_shipping_date, to_shipping_date = get_fdate_tdate(fromShippingDate, toShippingDate)

            orders = get_orders_by_shipping_date(from_shipping_date, to_shipping_date, providerId, warehouseId, cod)

            return [to_t_order(order) for order in orders]

        finally:

            close_session()

    def getReturnableOrdersForCustomer(self, customerId, limit = None):

        """

        Parameters:

         - customerId

         - limit

        """

        try:

            return get_returnable_orders_for_customer(customerId, limit)

        finally:

            close_session()

    def getCancellableOrdersForCustomer(self, customerId, limit = None):

        """

        Parameters:

         - customerId

         - limit

        """

        try:

            return get_cancellable_orders_for_customer(customerId, limit)

        finally:

            close_session()

    def changeOrderStatus(self, orderId, status, description):

        """

        Parameters:

         - orderId

         - status

         - description

         - 

        """

        try:

            return change_order_status(self, orderId, status, description)

        finally:

            close_session()

    def verifyOrder(self, orderId):

        """

        Marks the given order as SUBMITTED_FOR_PROCESSING and updates the verified

        timestamp. It is intended to be used for COD orders but can be harmlessly

        used for all other orders as well.

        Throws an exception if no such order exists.

        Parameters:

         - orderId

        """

        try:

            return verify_order(self, orderId)

        finally:

            close_session()

    def acceptOrder(self, orderId):

        """

        Marks the given order as ACCEPTED and updates the accepted timestamp. If the

        given order is not a COD order, it also captures the payment if the same has

        not been captured.

        Throws an exception if no such order exists.

        Parameters:

         - orderId

        """

        try:

            return accept_order(orderId)

        finally:

            close_session()

    def getOrdersForCustomer(self, customerId, from_date, to_date, statuses):

        """

        Returns list of orders for the given customer created between the given dates and having the given statuses.

        Pass and empty list to ignore filtering on statuses.

        Parameters:

         - customerId

         - from_date

         - to_date

         - statuses

        """

        try:

            current_from_date, current_to_date = get_fdate_tdate(from_date, to_date)

            orders = get_orders_for_customer(customerId, current_from_date, current_to_date, statuses)

            return [to_t_order(order) for order in orders]

        finally:

            close_session()

    def getOrderForCustomer(self, orderId, customerId):

        """

        Returns an order for the order Id. Also checks if the order belongs to the customer whose Id is passed.

        Throws exception if either order Id is invalid or order does not below to the customer whose Id is passed.

        Parameters:

         - customerId

         - orderId

        """

        try:

            return to_t_order(get_order_for_customer(orderId, customerId))

        finally:

            close_session()

    def getOrder(self, id):

        """

        Parameters:

         - id

        """

        try:

            return to_t_order(get_order(id))

        finally:

            close_session()

    def getLineItemsForOrder(self, orderId):

        """

        Parameters:

         - orderId

        """

        try:

            lineitems = get_line_items_for_order(orderId)

            t_lineitems = []

            for lineitem in lineitems:

                t_lineitems.append(to_t_lineitem(lineitem))

            return t_lineitems

        finally:

            close_session()

    def addBillingDetails(self, orderId, invoice_number, imeiNumber, itemNumber, billedBy, jacketNumber, billingType, vendorId):

        """

        Adds jacket number and IMEI no. to the order. Doesn't update the IMEI no. if a -1 is supplied.

        Also marks the order as billed and sets the billing timestamp.

        Return false if it doesn't find the order with the given ID.

        Parameters:

         - orderId

         - jacketNumber

         - imeiNumber

         - itemNumber

         - billedBy

        """

        try:

            return add_billing_details(orderId, invoice_number, imeiNumber, itemNumber, billedBy, jacketNumber, billingType, vendorId)

        except TransactionServiceException:

            print "ERROR: Couldn't find the order with the given id"

            return False

        finally:

            close_session()

    def batchOrders(self, warehouseId):

        """

        Create a batch of all the pending orders for the given warehouse.

        The returned list is orderd by created_timestamp.

        If there are no pending orders, an empty list is returned.

        Parameters:

         - warehouseId

        """

        try:

            pending_orders = batch_orders(warehouseId)

            return [to_t_order(order) for order in pending_orders]

        finally:

            close_session()

    def markOrderAsOutOfStock(self, orderId):

        """

        Mark the given order as out of stock. Throws an exception if the order with the given Id couldn't be found.

        Parameters:

         - orderId

        """

        try:

            return order_outofstock(orderId)

        finally:

            close_session()

    def markOrdersAsManifested(self, warehouseId, providerId, cod):

        """

        Depending on the third parameter, marks either all prepaid or all cod orders BILLED by the

        given warehouse and were picked up by the given provider as MANIFESTED.

        Parameters:

         - warehouseId

         - providerId

         - cod

        """

        try:

            return mark_orders_as_manifested(warehouseId, providerId, cod)

        finally:

            close_session()

    def markOrdersAsShippedFromWarehouse(self, warehouseId, providerId, cod):

        """

        Depending on the third parameter, marks either all prepaid or all cod orders MANIFESTED by the

        given warehouse and were picked up by the given provider as SHIPPED_FROM_WH.

        Parameters:

         - warehouseId

         - providerId

         - cod

        """

        try:

            return mark_orders_as_shipped_from_warehouse(warehouseId, providerId, cod)

        finally:

            close_session()

    def markOrdersAsPickedUp(self, providerId, pickupDetails):

        """

        Marks all SHIPPED_FROM_WH orders of the previous day for a provider as SHIPPED_TO_LOGISTICS.

        Returns a list of orders that were shipped from warehouse but did not appear in the pick-up report.

        Raises an exception if we encounter report for an AWB number that we did not ship.

        Parameters:

         - providerId

         - pickupDetails

        """

        try:

            orders_not_picked_up = mark_orders_as_picked_up(providerId, pickupDetails)

            return [to_t_order(order) for order in orders_not_picked_up]

        finally:

            close_session()

    def markOrdersAsDelivered(self, providerId, deliveredOrders):

        """

        Marks all orders with AWBs in the given map as delivered. Also sets the delivery timestamp and

        the name of the receiver.

        Raises an exception if we encounter report for an AWB number that we did not ship.

        Parameters:

         - providerId

         - deliveredOrders

        """

        try:

            mark_orders_as_delivered(providerId, deliveredOrders)

        finally:

            close_session()

    def markOrdersAsFailed(self, providerId, returnedOrders):

        """

        Mark all orders with AWBs in the given map as failed. Also sets the delivery timestamp.

        Raises an exception if we encounter report for an AWB number that we did not ship.

        Parameters:

         - providerId

         - returnedOrders

        """

        try:

            mark_orders_as_failed(providerId, returnedOrders)

        finally:

            close_session()

    def updateNonDeliveryReason(self, providerId, undeliveredOrders):

        """

        Update the status description of orders whose AWB numbers are keys of the Map.

        Parameters:

         - providerId

         - undelivered_orders

        """

        try:

            update_non_delivery_reason(providerId, undeliveredOrders)

        finally:

            close_session()

    def getUndeliveredOrders(self, providerId, warehouseId):

        """

        Returns the list of orders whose delivery time has passed but have not been

        delivered yet for the given provider and warehouse. To get a complete list of

        undelivered orders, pass them as -1.

        Returns an empty list if no such orders exist.

        Parameters:

         - providerId

         - warehouseId

        """

        try:

            undelivered_orders = get_undelivered_orders(providerId, warehouseId)

            return [to_t_order(order) for order in undelivered_orders]

        finally:

            close_session()

    def enqueueTransactionInfoEmail(self, transactionId):

        """

        Save the email containing order details to be sent to customer later by batch job

        Parameters:

         - transactionId

        """

        try:

            return enqueue_transaction_info_email(transactionId)

        finally:

            close_session()

    def getAlerts(self, type, warehouseId, status, timestamp):

        """

        Parameters:

         - type

         - warehouseId

         - status

         - timestamp

        """

        try:

            alerts = get_alerts(type, warehouseId, status, timestamp)

            t_alerts = []

            for alert in alerts:

                t_alerts.append(to_t_alert(alert)) 

            return t_alerts

        finally:

            close_session()

    def addAlert(self, type, warehouseId, description):

        """

        Parameters:

         - type

         - description

         - warehouseId

        """

        try:

            add_alert(type, warehouseId, description)

        finally:

            close_session()

    def markAlertsAsSeen(self, warehouseId):

        """

        Parameters:

         - warehouseId

        """

        try:

            mark_alerts_as_seen(warehouseId)

        finally:

            close_session()

        pass

    def getValidOrderCount(self, ):

        """

        Return the number of valid orders. (OrderStatus >= OrderStatus.SUBMITTED_FOR_PROCESSING)

        """

        try:

            return get_valid_order_count()

        finally:

            close_session()

    def getNoOfCustomersWithSuccessfulTransaction(self, ):

        """

        Returns the number of distinct customers who have done successful transactions

        """

        try:

            return get_cust_count_with_successful_txn()

        finally:

            close_session()

    def getValidOrdersAmountRange(self, ):

        """

        Returns the minimum and maximum amounts of a valid order. (OrderStatus >= OrderStatus.SUBMITTED_FOR_PROCESSING)

        List contains two values, first minimum amount and second maximum amount.

        """

        try:

            return get_valid_orders_amount_range()

        finally:

            close_session()

    def getValidOrders(self, limit):

        """

        Returns list of Orders in descending order by Order creation date. List is restricted to limit Orders.

        If limit is passed as 0, then all valid Orders are returned.

        Parameters:

         - limit

        """

        try:

            return [to_t_order(order) for order in get_valid_orders(limit)]

        finally:

            close_session()

    def toggleDOAFlag(self, orderId):

        """

        Toggle the DOA flag of an order. This should be used to flag an order for follow-up and unflag it when the follow-up is complete.

        Returns the final flag status.

        Throws an exception if the order with the given id couldn't be found or if the order status is not DELVIERY_SUCCESS.

        Parameters:

         - orderId

        """

        try:

            return toggle_doa_flag(orderId)

        finally:

            close_session()

    def markOrderDoaRequestReceived(self, orderId):

        """

        Once user raise the request for a DOA, order status will be changed from DELVIERY_SUCCESS to DOA_REQUEST_RECEIVED

        Parameters:

         - orderId

        """

        try:

            return mark_order_doa_request_received(orderId)

        finally:

            close_session()

    def markOrderDoaRequestAuthorized(self, orderId, isAuthorized):

        """

        CRM person can authorize or deny the request reised by customer. If he authorizes order will change from DOA_REQUEST_RECEIVED

        to DOA_REQUEST_AUTHORIZED. If he denies, status will be changed back to DELVIERY_SUCCESS.

        Parameters:

         - orderId

         - isAuthorized

        """

        try:

            return mark_order_doa_request_authorized(orderId, isAuthorized)

        finally:

            close_session()

    def markOrderReturnRequestReceived(self, orderId):

        """

        Once user raise the request for a DOA, order status will be changed from DELVIERY_SUCCESS to RET_REQUEST_RECEIVED

        Parameters:

         - orderId

        """

        try:

            return mark_order_return_request_received(orderId)

        finally:

            close_session()

    def markOrderReturnRequestAuthorized(self, orderId, isAuthorized):

        """

        CRM person can authorize or deny the request reised by customer. If he authorizes order will change from RET_REQUEST_RECEIVED

        to RET_REQUEST_AUTHORIZED. If he denies, status will be changed back to DELVIERY_SUCCESS.

        Parameters:

         - orderId

         - isAuthorized

        """

        try:

            return mark_order_return_request_authorized(orderId, isAuthorized)

        finally:

            close_session()

    def requestPickupNumber(self, orderId):

        """

        Sends out an email to the account manager of the original courier provider used to ship the order.

        If the order status was DELIVERY_SUCCESS, it is changed to be DOA_PICKUP_REQUEST_RAISED.

        If the order status was DOA_PICKUP_REQUEST_RAISED, it is left unchanged.

        For any other status, it returns false.

        Throws an exception if the order with the given id couldn't be found.

        Parameters:

         - orderId

        """

        try:

            return request_pickup_number(orderId)

        finally:

            close_session()

    def authorizePickup(self, orderId, pickupNumber):

        """

        If the order status is DOA_PICKUP_REQUEST_RAISED, it does the following

            1. Sends out an email to the customer with the dispatch advice that he has to print as an attachment.

            2. Changes order status to be DOA_PICKUP_AUTHORIZED.

            3. Returns true

        If the order is any other status, it returns false.

        Throws an exception if the order with the given id couldn't be found.

        Parameters:

         - orderId

         - pickupNumber

        """

        try:

            return authorize_pickup(orderId, pickupNumber)

        finally:

            close_session()    

    def markDoasAsPickedUp(self, providerId, pickupDetails):

        """

        Marks all DOA_PICKUP_AUTHORIZED orders of the previous day for a provider as DOA_RETURN_IN_TRANSIT.

        Returns a list of orders that were authorized for pickup but did not appear in the pick-up report.

        Parameters:

         - providerId

         - pickupDetails

        """

        try:

            orders_not_picked_up = mark_doas_as_picked_up(providerId, pickupDetails)

            return [to_t_order(order) for order in orders_not_picked_up]

        finally:

            close_session()

    def receiveReturn(self, orderId, receiveCondition):

        """

        If the order status is DOA_PICKUP_CONFIRMED or DOA_RETURN_IN_TRANSIT, marks the order status as DOA_RECEIVED_PRESTINE and returns true.

        If the order is in any other state, it returns false.

        Throws an exception if the order with the given id couldn't be found.

        Parameters:

         - orderId

        """

        try:

            return receive_return(orderId, receiveCondition)

        finally:

            close_session()

    def validateDoa(self, orderId, isValid):

        """

        Used to validate the DOA certificate for an order in the DOA_RECEIVED_PRESTINE state. If the certificate is valid,

        the order state is changed to DOA_CERT_PENDING.

        If the certificate is invalid, the order state is changed to DOA_CERT_INVALID.

        If the order is in any other state, it returns false.

        Throws an exception if the order with the given id couldn't be found.

        Parameters:

         - orderId

         - isValid

        """

        try:

            return validate_doa(orderId, isValid)

        finally:

            close_session()

    def validateReturnProduct(self, orderId, isUsable):

        """

        Parameters:

         - orderId

         - isUsable

        """

        try:

            return validate_return_product(orderId, isUsable)

        finally:

            close_session()

    def reshipOrder(self, orderId):

        """

        If the order is in RTO_RECEIVED_PRESTINE or DOA_CERT_INVALID state, it does the following:

            1. Creates a new order for processing in the BILLED state. All billing information is saved.

            2. Marks the current order as one of the final states RTO_RESHIPPED and DOA_INVALID_RESHIPPED depending on what state the order started in.

        If the order is in DOA_CERT_VALID state, it does the following:

            1. Creates a new order for processing in the SUBMITTED_FOR_PROCESSING state.

            2. Creates a return order for the warehouse executive to return the DOA material.

            3. Marks the current order as the final DOA_VALID_RESHIPPED state.

        Returns the id of the newly created order.

        Throws an exception if the order with the given id couldn't be found.

        Parameters:

         - orderId

        """

        try:

            return reship_order(orderId)

        finally:

            close_session()

    def refundOrder(self, orderId, refundedBy, reason):

        """

        If the order is in RTO_RECEIVED_PRESTINE, DOA_CERT_VALID or DOA_CERT_INVALID state, it does the following:

            1. Creates a refund request for batch processing.

            2. Creates a return order for the warehouse executive to return the shipped material.

            3. Marks the current order as RTO_REFUNDED, DOA_VALID_REFUNDED or DOA_INVALID_REFUNDED final states.

        If the order is in SUBMITTED_FOR_PROCESSING or INVENTORY_LOW state, it does the following:

            1. Creates a refund request for batch processing.

            2. Cancels the reservation of the item in the warehouse.

            3. Marks the current order as the REFUNDED final state.

        For all COD orders, if the order is in INIT, SUBMITTED_FOR_PROCESSING or INVENTORY_LOW state, it does the following:

            1. Cancels the reservation of the item in the warehouse.

            2. Marks the current order as CANCELED.

        In all cases, it updates the reason for cancellation or refund and the person who performed the action.

        Returns True if it is successful, False otherwise.

        Throws an exception if the order with the given id couldn't be found.

        Parameters:

         - orderId

         - refundedBy

         - reason

        """

        try:

            return refund_order(orderId, refundedBy, reason)

        finally:

            close_session()

    def getReturnOrders(self, warehouseId, fromDate, toDate):

        """

        Get all return orders created between the from and to dates for the given warehouse.

        Ignores the warehouse if it is passed as -1.

        Parameters:

         - warehouseId

         - fromDate

         - toDate

        """

        try:

            from_date, to_date = get_fdate_tdate(fromDate, toDate)

            return get_return_orders(warehouseId, from_date, to_date)

        finally:

            close_session()

    def getReturnOrder(self, id):

        """

        Returns the ReturnOrder corresponding to the given id.

        Throws an exception if the return order with the given id couldn't be found.

        Parameters:

         - id

        """

        try:

            return get_return_order(id)

        finally:

            close_session()

    def processReturn(self, returnOrderId):

        """

        Marks the return order with the given id as processed. Raises an exception if no such return order exists.

        Parameters:

         - returnOrderId

        """

        try:

            process_return(returnOrderId)

        finally:

            close_session()

    def createPurchaseOrder(self, warehouseId):

        """

        Creates a purchase order corresponding to all the pending orders of the given warehouse.

        Returns the PO no. of the newly created purchase order.

        Parameters:

         - warehouseId

        """

        try:

            return create_purchase_order(warehouseId)

        finally:

            close_session()

    def updateWeight(self, orderId, weight):

        """

        Set the weight of the given order to the provided value. Will attempt to update the weight of the item in the catalog as well.

        Parameters:

         - orderId

         - weight

        """

        try:

            order = update_weight(orderId, weight)

            return to_t_order(order)

        finally:

            close_session()

    def changeItem(self, orderId, itemId):

        """

        Change the item to be shipped for this order. Also adjusts the reservation in the inventory accordingly.

        Currently, it also ensures that only a different color of the given item is shipped.

        Parameters:

         - orderId

         - itemId

        """

        try:

            order = change_product(orderId, itemId)

            return to_t_order(order)

        finally:

            close_session()

    def shiftToWarehouse(self, orderId, warehouseId):

        """

        Moves the given order to the given warehouse. Also adjusts the inventory reservations accordingly.

        Parameters:

         - orderId

         - warehouseId

        """

        try:

            order = change_warehouse(orderId, warehouseId)

            return to_t_order(order)

        finally:

            close_session()

    def addDelayReason(self, orderId, delayReason, furtherDelay):

        """

        Adds the given delay reason to the given order.

        Increases the expected delivery time of the given order by the given no. of days.

        Raises an exception if no order with the given id can be found.

        Parameters:

         - orderId

         - delayReason

        """

        try:

            return add_delay_reason(orderId, delayReason, furtherDelay)

        finally:

            close_session()

    def reconcileCodCollection(self, collectedAmountMap, xferBy, xferTxnId, xferDate):

        """

        Marks the COD orders with given AWB nos. as having been processed.

        Updates the captured amount for the corresponding payment.

        Returns a map of AWBs which were not processed and the associated reason. An AWB is not processed if:

        1. There is no order corresponding to an AWB number.

        2. The captured amount for a payment exceeds the total payment.

        3. The order corresponding to an AWB no. is in a state prior to DELIVERY_SUCCESS.

        Parameters:

         - collectedAmountMap

         - xferBy

         - xferTxnId

         - xferDate

        """

        try:

            return reconcile_cod_collection(collectedAmountMap, xferBy, xferTxnId, xferDate)

        finally:

            close_session()

    def getTransactionsRequiringExtraProcessing(self, category):

        """

        Returns the list of transactions that require some extra processing and

        which belong to a particular category. This is currently used by CRM

        application.

        """

        try:

            return get_transactions_requiring_extra_processing(category)

        finally:

            close_session()

    def markTransactionAsProcessed(self, transactionId, category):

        """

        Marks a particular transaction as processed for a particular category.

        It essentially deletes the transaction if it is processed for a particular

        category. This is currently used by CRM application.

        """

        try:

            return mark_transaction_as_processed(transactionId, category)

        finally:

            close_session()

    def getItemWiseRiskyOrdersCount(self, ):

        """

        Returns a map containing the number of risky orders keyed by item id. A risky order

        is defined as one whose shipping date is about to expire.

        """

        try:

            return get_item_wise_risky_orders_count()