Getting Startedwith pureQuery

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Getting Started with pureQuery
Listing 11.25 - An SQL statement for updating an employee’s last name
UPDATE EMPLOYEE SET FIRSTNME = [new first name] WHERE EMPNO = [original
employee number]
Listing 11.26 - An SQL statement for updating an employee’s first name
Since we are executing UPDATE statements, we use the
com.ibm.pdq.annotation.Update annotation. We want the methods to return an
update count, so we use int as the return type.
We will use pureQuery parameter markers for the parameters to the SQL. All of the
information about the employee will be available in the EmployeeBean object that
describes the employee. Refer to Table 11.1, which lists the various types of parameter
markers. Both the ?n.name type of parameter marker and the :name type that the
information is a property in a pureQuery bean. We choose to use the :name type.
Add annotated methods for these SQL statements. You need one method for each of the
following columns: LASTNAME, FIRSTNME, MIDINIT, EDLEVEL, BIRTHDATE, JOB,
SALARY, BONUS, and COMM. The corresponding properties in EmployeeBean are,
respectively: lastName, firstName, middleInitial, educationLevel, birthDate,
job, salary, bonus, and commission. Listing 11.27 and Listing 11.28 show two of the
annotated methods; the remaining methods are similar. You can refer to the completed
methods in hrm.completed.pdqMethodStyle.HumanResourcesData if you want
help. After you have added the methods, build your project so that Optim Development
Studio will generate an updated implementation class.
@Update(sql = "UPDATE EMPLOYEE SET LASTNAME = :lastName WHERE EMPNO =
:employeeNumber")
int updateEmployeeLastName (EmployeeBean employee);
Listing 11.27 - An annotated method that updates an employee’s last name
@Update(sql = "UPDATE EMPLOYEE SET FIRSTNME = :firstName WHERE EMPNO =
:employeeNumber")
int updateEmployeeFirstName (EmployeeBean employee);
Listing 11.28 - An annotated method that updates an employee’s first name
11.6.2.2 Modify the changeEmployeeInformation() method to use the new
annotated methods
Modify the changeEmployeeInformation method in
hrm.inProgress.pdqMethodStyle.HumanResourcesManager to use the new
annotated methods to update the database. Listing 11.29 and Listing 11.30 show two of
the changes; the remaining changes are similar.
// Update the last name in the database
updateCount = data.updateEmployeeLastName (employee);