Re: [Simple-support] Element/Attribute Default Values

[Niall G. <gal...@ya...>]

Hi,

Yes there is a way to intercept, for example:

public class MyExample {

 private static final DEFAULT_VALUE = "[[NULL]]";
 @Element
  private String webAddress 

  @Commit
  private void resolveMyDefault() {
     if(webAddress.equals(DEFAULT_VALUE)) {
        webAddress = null;
    }
  }

  @Persist
   private void fixMyObject() {
      if(webAddress == null){
         webAddress = DEFAULT_VALUE:
      }
   }

   @Complete
   private void backToNormal() {
      resolveMyDefault();
   }
}

This should do the trick, as @Persist gets called just before the object is persisted, and @Complete gets called when its been serialized to the XML document. The @Commit gets called after deserialization so the object values will be reverted to a proper working runtime value.

Hope this helps.
Niall

----- Original Message ----
From: Keith Byrne <ka...@gm...>
To: sim...@li...
Sent: Monday, June 11, 2007 10:33:16 AM
Subject: [Simple-support] Element/Attribute Default Values


I have a situation where a field isn't required, but when it's null and is serialized, the tag still needs to show up empty.  Specifically, there is a String field (webAddress) that has an Attribute annotation, that went it's null should be serialized to <webAddress/>, instead of not showing up.  Is there a way to intercept the serializing of an Element/Attribute, and based upon it's type, serialize a default value?


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