Package service

Class CustomerService

java.lang.Object

service.CustomerService

public class CustomerService
extends Object

Service class for managing customer operations. Handles customer creation, updates, retrieval, and deletion.

Author:

TAMIL MUGHILAN

Field Summary

Fields

Modifier and Type	Field	Description
private DataStorage	dataStorage

Constructor Summary

Constructors

Constructor	Description
CustomerService(DataStorage dataStorage)	Creates a new CustomerService with the specified data storage.

Method Summary

Modifier and Type	Method	Description
int	createCustomer(String name, String phone, String email, int branchId)	Creates a new customer.
int	createCustomerWithPassword(String name, String phone, String email, int branchId, String password, String salt)	Creates a new customer with password for login.
boolean	deleteCustomer(int customerId)	Retrieves a customer by ID.
Customer	getCustomer(int customerId)	Retrieves a customer by ID.
Customer	getCustomerByEmail(String email)	Retrieves a customer by email address.
List<Customer>	getCustomersByBranch(int branchId)	Gets all customers for a specific branch.
String	getSaltForCustomer(int customerId)	Gets the password salt for a customer.
void	updateCustomer(int customerId, String name, String phone, String email, int branchId)	Updates an existing customer's information.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

dataStorage

private DataStorage dataStorage

Constructor Details

CustomerService

public CustomerService(DataStorage dataStorage)

Creates a new CustomerService with the specified data storage.

Parameters:

dataStorage - the data storage implementation to use

Method Details

createCustomer

public int createCustomer(String name,
 String phone,
 String email,
 int branchId)

Creates a new customer.

Parameters:

name - the customer's name

phone - the customer's phone number

email - the customer's email address

branchId - the branch ID

Returns:

the new customer ID

createCustomerWithPassword

public int createCustomerWithPassword(String name,
 String phone,
 String email,
 int branchId,
 String password,
 String salt)

Creates a new customer with password for login.

Parameters:

name - the customer's name

phone - the customer's phone number

email - the customer's email address

branchId - the branch ID

password - the hashed password

salt - the password salt for security

Returns:

the new customer ID

updateCustomer

public void updateCustomer(int customerId,
 String name,
 String phone,
 String email,
 int branchId)
                    throws SQLException

Updates an existing customer's information.

Parameters:

customerId - the customer ID to update

name - the new name

phone - the new phone number

email - the new email address

branchId - the new branch ID

Throws:

SQLException - if database error occurs

IllegalArgumentException - if customer data is invalid

getCustomer

public Customer getCustomer(int customerId)

Retrieves a customer by ID.

Parameters:

customerId - the customer ID

Returns:

the customer or null if not found

deleteCustomer

public boolean deleteCustomer(int customerId)

Retrieves a customer by ID.

Parameters:

customerId - the customer ID

Returns:

the customer or null if not found

getCustomerByEmail

public Customer getCustomerByEmail(String email)

Retrieves a customer by email address.

Parameters:

email - the customer's email address

Returns:

the customer or null if not found

getCustomersByBranch

public List<Customer> getCustomersByBranch(int branchId)

Gets all customers for a specific branch.

Parameters:

branchId - the branch ID

Returns:

list of customers in the branch

getSaltForCustomer

public String getSaltForCustomer(int customerId)

Gets the password salt for a customer.

Parameters:

customerId - the customer ID

Returns:

the password salt or null if not found