How to create the custom method and make it available to clients:

Hello, Can any one help me with this problem ASAP??
I am trying to work on an example of "Customizing the Query and Creating an Associated Custom Method"
from http://helponline.oracle.com/jdeveloper/help/topics/jdeveloper/developing_mvc_applications/adf_pviewcustommethod.html?tp=true#method. To do that, the first task is to create the custom method and make it available to clients.
Following instructions in the helponline documentation, I completed the three steps: (1) "Specify a custom query for the View Object definition for EmployeesView", (2) "Add the custom method to the application module Java class", and (3) "Make the method available to clients".
The following is the error message I got to test the application module. Can anyone tell me what the message really means and what I should do. I am wondering if there is any mistakes in the document.
(oracle.jbo.SQLStmtException) JBO-27122: SQL error during statement preparation. Statement: SELECT Employees.EMPLOYEE_ID, Employees.FIRST_NAME, Employees.LAST_NAME, Employees.EMAIL, Employees.PHONE_NUMBER, Employees.HIRE_DATE, Employees.JOB_ID, Employees.SALARY, Employees.COMMISSION_PCT, Employees.MANAGER_ID, Employees.DEPARTMENT_ID FROM EMPLOYEES Employees WHERE Employees.SALARY > :1 and Employees.DEPARTMENT_ID = :2
----- LEVEL 1: DETAIL 0 -----
(java.sql.SQLException) ORA-01008: not all variables bound

You need to set values for the parameters in your query before you try to execute the query in the view object.
So you need to call the setBindVars method before the query.

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http://help.sap.com/saphelp_46c/helpdata/en/4f/d5268a575e11d189270000e8322f96/content.htm
HR related site:
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Check the following
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/PAXX/PYINT_INFOTYP.pdf
Infotype Enhancement overview screen
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/60a7586d-edd9-2910-68a8-8204303835a1
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vasavi.
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How to create the custom method and make it available to clients:

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