[Simple-support] Check for empty element

[Joël C. <jo...@cr...>]

Hello,

I'm trying to deserialize an IPTables XML configuration file. In the file there is a part like this:

      <rule >
       <actions>
        <DROP  />
       </actions>

      </rule>

The empty element inside the actions element can be one of these four: <DROP /> or <ACCEPT /> or <RETURN /> or <QUEUE />

When reading in the XML file, I have a Java class Rule.java like this:

package model;

import java.io.Serializable;

import org.simpleframework.xml.Element;
import org.simpleframework.xml.Root;

@Root(name = "rule")
public class Rule implements Serializable {
	private static final long serialVersionUID = 1L;

	@Element(name = "actions", required = true)
	private Actions action;

}

The actions class looks like this:

package model;

import org.simpleframework.xml.Element;
import org.simpleframework.xml.Root;
import org.simpleframework.xml.convert.Convert;

@Root(name = "actions", strict = false)
public class Actions {
	@Element(name = "DROP", required = false)
	private String aDrop;

	@Element(name = "ACCEPT", required = false)
	private String aAccept;

	@Element(name = "QUEUE", required = false)
	private String aQueue;

	@Element(name = "RETURN", required = false)
	private String aReturn;

	public String toString() {
		if (aDrop != null) {
			return "DROP";
		} else if (aAccept != null) {
			return "ACCEPT";
		} else if (aQueue != null) {
			return "QUEUE";
		} else if (aReturn != null) {
			return "RETURN";
		} else {
			return "NOTHING";
		}
	}
}

I want to check which element was present inside the actions element.
However all the attributes of the Actions class stay NULL.

What am I doing wrong?

Thanks in advance.

Joël Craenhals