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Using Enums in EL

By , 21 January 2009

Using Enums in EL

Unfortunately EL has no special support for enums. That makes it especially hard when you need to input enum values (for example from a dropdown box). One simple solution is to add a getter and setter to your bean to marshall the String value to and from an enum:

enum Status { A, B, C, D}

/* EL convenience getters and setters */
public String getStatus_() {
    return (status == null) ? null : status.name();
}
public void setStatus_(String status) {
    this.status = Status.valueOf(status);
}

Now you can build your dropdowns easily like this:

<h:outputText value="Status:"/>
<h:selectOneMenu value="${bean.status_}">
  <f:selectItem itemValue="A" itemLabel="Asleep"/>
  <f:selectItem itemValue="B" itemLabel="Bored"/>
  <f:selectItem itemValue="C" itemLabel="Creative"/>
  <f:selectItem itemValue="D" itemLabel="Dead"/>
</h:selectOneMenu>

In this example I use the underscore on the method name to distinguish it from the regular getter and setter which are not shown.

Using Enums in EL
 

About Roger Keays

Using Enums in EL

Roger Keays is an artist, an engineer, and a student of life. Since he left Australia in 2009, he has been living as a digital nomad, covering over 40 different countries around the world. Roger is addicted to surfing. His other interests are music, psychology, languages, and finding good food. Click here to subscribe to his weekly blog, or stalk him on Facebook, Twitter or Google+.

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