How to pass the values to the WHERE-Clause in JClient ADF?

Question

Hi all,
my JDeveloper Version is 10.1.2.0.0 (Build 1811)
I need something like this:
A Form with a Filter-Panel, and the Table-Panel EMP.
In Filter:
1. DEPTNO as ComboBox with values from the DEPT table (not static values). The ComboBox should contain all deptno's from DEPT and one NULL value too, so the user can be able to select this NULL-value and get all employees from all depatments.
2. TextField Job - not the database field - not required. The user should be able to enter in this field any JOB and get the Employees for selected deptno (or for all departments by selecting NULL-value) in combobox with the needed job. When the user does not enter anything in the TextField then he should get all Employees from the department from combobox.
In Table-Panel:
JTable for EMP.
What I try to do:
1. Create an Application Workspace with "Java Application [default]" as Application Template.
2. For Model-Package: New -> Business Components -> Business Components from Tables
3. On the "Entity Objects from Tables"-page of wizard I shuttle DEPT and EMP from available to selected.
4. On the "Updatable View Objects from Entity Objects"-page I shuttle the both view objects from availabe to selected.
5. On the "Read-Only View Objects from Tables"-page I do not select anything
6. Create the AppModule on the "Appication Module"-page.
7. Test the AppModule -> all is OK.
8. Create the next ViewObject "DeptNew" with read-only access and Query: "SELECT DEPTNO FROM DEPT".
9. Then I create a new attribute "JOB" for this ViewObject with Type String and Updatable: Always.
10. Create a VeiwLink "DeptNewLink", on the "View Objects"-page: Cardinality -> 1 to 1.
11. Source Attribute: DeptNew DeptNo -> Destination Attribute EmpView Deptno and click on Add
12. Source Attribute: DeptNew Job -> Destination Attribute EmpView Job and click on Add.
13. Edit the AppModule to add my DeptNew and DeptNewLink.
When I test the AppModule and double click on the DeptNewLink then I can enter the 20 in the DEPTNO and CLERK in the JOB and see the result in the Table.
Now I create the Master-Detail Form (at first without combobox) with wizard:
1. As Master I select the DeptNew1, as Detail EmpView3.
2. "Selected Attributes for Master" - Deptno, job.
3. "Selected Attributes for Detail" - all attributes.
Now I test my form in Query Mode:
Enter 20 to the DEPTNO field and enter CLERK to the JOB field. After Execute Query I get:
"JBO-27122: SQL-Fehler bei Vorbereitung der Anweisung. Anweisung: SELECT * FROM (select deptno from dept) QRSLT WHERE ( ( (DEPTNO = 20) AND (VIEW_ATTR LIKE 'CLERK') ) )"
Why VIEW_ATTR how to change it to JOB?
What have I done false?
Please help me to create the combobox with the above listed requirements.
Regards

Answer 1

I'd go about this a little differently (probably not the best way):
1. Create view object lk_department (lookup). In the query add a union with something like "select null as ID, 'All' as name' from dual;". This adds a null value that they can select by leaving the combo box on "All". Add a 'order by id" so the null value is the first one. When creating the combo box you want it set to navigation mode, so select the whole viewobject from the data palette rather a specific field.
2. Create a jTextField for the "Jobs" field.
3. Create an application module method that does something like:
public void filterEmployees(String job){
ViewObject vo_departments = findViewObject("lk_departments");
ViewObject vo_employees = findViewObject("employees");
String wc = "1 = 1 ";
String wc = " and job like '%"+job+"%'"
if (vo_departments.getCurrentRow().getAttribute("Id") != null) {wc += "and department_id = "+vo_departments.getCurrentRow().getAttribute("Id");}
vo_employees.setWhereClause(wc);
vo_employees.executeQuery();
this.sync;
4. In your Jclient app, you just need to call the method of your appmodule and insert the string from the textbox, using code similar to this:
AppModule b = (AppModule)panelBinding.getApplicationModule();
b.filterEmployees(jTextField.getText());
I didn't test this code, but that's how I go about the same thing.