Getting Startedwith pureQuery

Chapter 10 – Inline Programming Style 193
?n.name
pureQuery
beans and
Map objects
Directs pureQuery to
use the value of the
property name in the
nth object in
parameters as the
value of the SQL
parameter. For
example,
?1.lastName
represents the
lastName property of
first object. The
property name is case
sensitive.
// pureQuery bean
List employees =
data.queryList ("SELECT * FROM
EMPLOYEE WHERE WORKDEPT =
?1.departmentNumber AND EMPNO
!= ?1.managerEmployeeNumber
EmployeeBean.class, dept);
// Map
List employees =
data.queryList ("SELECT * FROM
EMPLOYEE WHERE WORKDEPT =
?1.departmentNumber AND EMPNO
!= ?1.managerEmployeeNumber",
EmployeeBean.class, map);
:name
pureQuery
beans and
Map objects
Directs pureQuery to
use the value of the
property name in the
first object in
parameters 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
List employees =
data.queryList ("SELECT * FROM
EMPLOYEE WHERE WORKDEPT =
:departmentNumber AND EMPNO !=
:managerEmployeeNumber",
EmployeeBean.class, dept);
// Map
List employees =
data.queryList ("SELECT * FROM
EMPLOYEE WHERE WORKDEPT =
:departmentNumber AND EMPNO !=
:managerEmployeeNumber",
EmployeeBean.class, map);
Table 10.1 - Parameter markers in the inline-method programming style
10.4.1 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.
The original code provided in the displayLogin method of
hrm.inProgress.pdqInlineStyle.HumanResourcesManager does not query the
database for the employee; instead, it just creates an empty EmployeeBean object. This
is shown in Listing 10.9.