The essential ADF error ECourse - work with ADF connections

I'm learning the ADF and make the ADF Essentials ECourse. I'm on the 'practice' for the first section of the ADF links. I know that the course was written for JDeveloper 11.1.2.0.0 but I use 11.1.1.7 since it is what is installed on the virtual machine available for download. During step 5-15: I get the following error when I go to view tab JPAModel "you attempted to set a value of the class type java.lang.String for deptId parameter with the expected type of class java.lang.Long query string select o o employees where o.departments.departmentId =: deptId.»

When I think back to the procedure, the screen shots see the that GetEmployeesfindbyDept (BigDecimal Deptid)...) whereas the code that is generated in my project is GetEmployeesfindbyDept (object Deptid)...)

I don't know if this is what causes the error, but it seems logical. What should I do to fix this error, because I REALLY want to continue this training.

The link I provided above has tutorials for each section of the ADF.

I recommend to start with:

Development of rich Web Applications with Oracle ADF

And then more: expand the JSF - controller working with stubborn workflows, regions and routers

Tags: Java

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