Implementation of SelectManyCheckBox component

The selectManyCheckbox component creates a component which allows the user to select many values from a series of checkboxes. SelectManyCheckBox.

It is quite similar to my earlier post on SelectManyListBox component. But here the use case, implementation is different.

Use-Case:

The association between two entities should be persisted in the third database entity.

Here the association means only UI association, don't get confused with ADF BC Association.

Say, there are three tables in an application, EMP, ROLES, EMP_ROLES. The EMP table is shown as a form layout allowing the user to navigate between the records, create a new record, & commit the changes. The SelectBooleanCheckBox is used to display all the ROLES with check Box like Manager, President etc. For an EMP record, the user can select as many roles as possible. 

When the user select any check box (i.e ROLE) for an EMP record,  an entry is made in the EMP_ROLES Table and vice versa. The EMP_ROLES table contains all the ROLES selected for an EMP record in the form of one to one mapping. And while navigating between the EMP records, the corresponding ROLES saved in the EMP_ROLES db table are displayed as selected.

UI:

Steps implemented are:

1. Create a Fusion Web Application.
2. Create all the required Business Components (EO, VO,VLink AM) for the above data model.

3. Don't forget to create a view link between EmpVO and EmpRolesVO, which will be used to display the check boxes as selected for an EMP record.
4. Drag and drop the EmpVO as a form layout with navigations.

5. Drag a SelectManyCheckBox UI Component and bind the value property of SelectManyCheckBox to a managed bean property, which evaluates the values to be displayed as selected for an EMP record as shown.

 

6. When any Role is selected/unselected on the UI, first it is saved in a pageFlowScope Variable, then it is processed in the commit method as shown:

 

7. When user navigates between the records, getSelectedRoles() method is called, which will fetch the ROLES for an EMP record and then display them as selected.

Sample Workspace:

Download the sample workspace from here.