How to display data in SelectOneChoice from database?

Question

Hi,
I want to display data in SelectOneChoice component after fetching from database in a bean using Application module implementation class. I have two fields in my bean id and name. I want to display name in choice and in backend i want to play with the id of corresponding selected choice i.e displayed in SelectOneChoice. I am not able to bind the datacontrol with the SelectOneChoice component. I have data in my bean i.e list of id and name fetched from database.

Answer 1

In my app module i have create a method which retruns UserBean in array List .
I dropped that data control on my page as Select One Choice and bind the same.
When i run that page I am able to see user bean object in drop down but when i try to see any specific var error occurs
Code-
<af:selectOneChoice value="#{bindings.return.inputValue}"
label="#{bindings.return.label}"
required="#{bindings.return.hints.mandatory}"
shortDesc="#{bindings.return.hints.tooltip}"
binding="#{backingBeanScope.backing_test12.soc1}"
id="soc1">
<f:selectItems value="#{bindings.return.items}"
binding="#{backingBeanScope.backing_test12.si1}"
id="si1"/>
</af:selectOneChoice>
This code works fine and drop down shows userbean .
But when i change the code it fetch username form bean exception occurs
Changed Code-
<f:selectItems value="#{bindings.return.items.*Username*}"
binding="#{backingBeanScope.backing_test12.si1}"
id="si1"/>
Exception-
*[ServletContext@15368949[app:ADF module:ADF-ViewController-context-root path:/ADF-ViewController-context-root spec-version:2.5]] Servlet failed with Exception*
java.lang.NumberFormatException: For input string: "Username"
*     at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)*
*     at java.lang.Integer.parseInt(Integer.java:449)*
*     at java.lang.Integer.parseInt(Integer.java:499)*
*     at javax.el.ListELResolver.toInteger(ListELResolver.java:373)*
*     at javax.el.ListELResolver.getValue(ListELResolver.java:167)*
*     Truncated. see log file for complete stacktrace*
FYI:- This control wokrs fine when i but this data in table . Not sure about the reason for select choice :(