[Simple-support] extends ArrayList<E> and simple xml

[Leonardo S. <le...@ma...>]

Hi all,

 

I am new to java development and to the simple xml library.

 

Here are my classes (some code has been removed to make it more concise):

 

@Root

@ElementList

public class MyArrayList<E> extends ArrayList<E>{

 

public void ToXml() throws Exception{

                Serializer serializer = new Persister();

                File file = new File("somewhere in my file system");

                serializer.write(this, file);

}

}

 

@Root

public abstract class MediaEntry implements Serializable {

                private static final long serialVersionUID = 1L;

 

                @Element

                public String Title;

                @Element

                public String Description;

                @Element

                public String Url;

                @Element

                public String LocalPath;

                                

                public MediaEntry(String title, String description, String
url, String localPath) {

                                Title= title;

                                Description= description;

                                Url= url;

                                LocalPath= localPath;

                }

}

 

public class VideoEntry extends MediaEntry {

                private static final long serialVersionUID = 1L;

 

                public VideoEntry(String title, String description, String
url, String localPath) {

                                super(title, description, url, localPath);

                }

}

 

When I instantiate MyArrayList<MediaEntry> add some VideoEntries and call
ToXml, I only get an empty root ie. <MyArrayList />

 

How to I solve this? Is it something to do with the fact that MyArrayList is
generic?

 

Thanks in advance,

 

Leo