Getting Startedwith pureQuery

Chapter 12 – Stored Procedures 253
this to happen, we need to specify the parameters in java.util.Map
objects or pureQuery beans.
We choose to use the first approach. You can implement the second approach as an
exercise if you wish.
As for the inline style, we will specify the values of the IN parameters by using variables of
the type double, and we will use the ? type of parameter markers. We specify parameters
for all of the stored procedure parameters, but what we specify for the OUT parameters
does not matter, as long as some parameter is referenced by the parameter marker. Add
the annotated method in Listing 12.9 to the
hrm.inProgress.pdqMethodStyle.HumanResourcesData interface and build the
project so that the pureQuery Generator regenerates the implementation class.
// Execute the bonus_increase stored procedure.
@Call(sql = "CALL bonus_increase (?, ?, ?, ?, ?, ?)")
StoredProcedureResult callBonusIncrease (double bonusFactor,
double bonusMaxSumForDepartment, String departmentsWithoutNewBonuses,
int countDepartmentsViewed, int countDepartmentsBonusChanged, String
errorMessage);
Listing 12.9 - An annotated method that executes the stored procedure
Add code to the increaseEmployeeBonuses method in
hrm.inProgress.pdqMethodStyle.HumanResourcesManager that calls the
annotated method. The values for the parameters that represent the OUT parameters do
not matter, so specify null and 0. Listing 12.10 shows the completed code.
// Execute the bonus_increase stored procedure.
storedProcedureResult = data.callBonusIncrease (bonusFactor,
bonusMaxSumForDepartment,
null, 0, 0, null);
Listing 12.10 - Code that calls the annotated method callBonusIncrease
After the StoredProcedureResult object is created, the application must get the OUT
parameters first, and then the query results, just as in inline style. Finally, the application
should close the Iterator object and storedProcedureResult.
The procedure for doing all of these things is identical to that in the inline method style, and
the code is the same, too. Refer to Section 12.3.1 to add the necessary code. Finally, test
the application by logging in with the employee number 000010 and selecting the option 5
on the main menu.
12.5 Summary
Both the inline style and the annotated-method style provide ways to execute SQL stored
procedure calls. The inline style provides methods named call in the
com.ibm.pdq.runtime.Data interface for this purpose. The annotated-method style
provides the com.ibm.pdq.annotation.Call annotation for placing on methods to