Getting Startedwith pureQuery

?n.name
:name
pureQuery
beans and
Map objects
pureQuery
beans and
Map objects
Chapter 11 – Annotated-Method Programming Style 223
method parameter, ?2
represents the second
method parameter, and
so forth.
Directs pureQuery to use
the value of the property
name in the nth method
parameter as the value
of the SQL parameter.
For example,
?1.lastName
represents the
lastName property of
first method parameter.
The property name is
case sensitive.
Directs pureQuery to use
the value of the property
name in the first method
parameter as the value
of the SQL parameter.
This is a shorter way of
specifying ?1.name that
is useful when only one
pureQuery bean or Map
object is specified. The
property name is case
sensitive.
// pureQuery bean
@Select(sql = "SELECT * FROM
EMPLOYEE WHERE WORKDEPT =
?1.departmentNumber AND EMPNO
!= ?1.managerEmployeeNumber")
List
selectDeptEmloyees
(DepartmentBean dept);
// Map
@Select(sql = "SELECT * FROM
EMPLOYEE WHERE WORKDEPT =
:departmentNumber AND EMPNO
!= :managerEmployeeNumber")
List
selectDeptEmployees
(DepartmentBean dept);
// pureQuery bean
@Select(sql = "SELECT * FROM
EMPLOYEE WHERE WORKDEPT =
?1.departmentNumber AND EMPNO
!= ?1.managerEmployeeNumber")
List
selectDeptEmployees
(Map map);
// Map
@Select(sql = "SELECT * FROM
EMPLOYEE WHERE WORKDEPT =
:departmentNumber AND EMPNO
!= :managerEmployeeNumber")
List
selectDeptEmployees
(Map map);
Table 11.1 - Parameter markers in the annotated-method programming style
11.5.1 In practice: Specify a scalar as a parameter to an SQL statement --
Complete the “Login” screen
When Human Resources Manager starts, it asks the user for his or her employee number.
The application queries the database for information about the employee with that
employee number. If the database contains an employee with that employee number, it
displays the main menu. If it does not contain such an employee, the application exits.