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

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

You are annotating an ArrayList<E>, this does not make much sense. Collections should not be annotated.



________________________________
From: Leonardo Seccia <le...@ma...>
To: sim...@li...
Sent: Wednesday, 19 October 2011 12:50 PM
Subject: [Simple-support] extends ArrayList<E> and simple xml


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
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