Time for action – learning to override a method

The following steps will show how to override a method from the class and then write our own logic in the method. We will have EmpDirectoryModuleImpl as our example here:

1. Right-click on the EmpDirectoryModuleImpl class and select the Source option.

2. Click on the Override Methods… option to override the operations from the base class.

3. Type in the method name, for example befo, in the search box that will fetch methods starting with that literal.

4. Check the beforeCommit() operation and click on OK.

5. Add the following code:

   ViewObject vo = findViewObject("EmpVO3");
   vo.clearCache();
   vo.executeQuery();

   

6. This code has to be added before the super.beforeCommit(transactionEvent) code statement.

What just happened?

Before committing the transaction:

• We are providing a handle to the EMPVO3 view object, which is the view instance of the child view object for DeptVO1

• The second line clears the cache for the view object and the last line will execute the query.

Have...