Java模式设计之数据访问对象模式 - 编程入门网
thus shielded from knowing
// these implementation details.
import java.sql.*;
public class CloudscapeCustomerDAO implements
CustomerDAO {
public CloudscapeCustomerDAO() {
// initialization
}
// The following methods can use
// CloudscapeDAOFactory.createConnection()
// to get a connection as required
public int insertCustomer(...) {
// Implement insert customer here.
// Return newly created customer number
// or a -1 on error
}
public boolean deleteCustomer(...) {
// Implement delete customer here
// Return true on success, false on failure
}
public Customer findCustomer(...) {
// Implement find a customer here using supplied
// argument values as search criteria
// Return a value object if found,
// return null on error or if not found
}
public boolean updateCustomer(...) {
// implement update record here using data
// from the customerData value object
// Return true on success, false on failure or
// error
}
public RowSet selectCustomersRS(...) {
// implement search customers here using the
// supplied criteria.
// Return a RowSet.
}
public Collection selectCustomersVO(...) {
// implement search customers here using the
// supplied criteria.
// Alternatively, implement to return a Collection
// of value objects.
}
...
}
Java模式设计之数据访问对象模式(6)时间:2010-12-06Example 9.5 Customer value Object
Example 9.6 Using a DAO and DAO Factory ?Client Code
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