using RESTlet, XStream annotations seem to have no effect

Question

Using @XStreamOmitField in my POJO seems to have no effect whatsoever. the annotated field still gets exposed in the xml or json representation.

@XStreamAlias("Pojo")
@Entity
public class Pojo {
    private String name;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long key;

    @XStreamOmitField
    private String hidden;

    public Pojo(String name, String hidden) {
        this.name = name;
        this.hidden = hidden;
    }
}

and in the ServerResource

@Get
public Pojo test() {
    Pojo pj= new Pojo("hansi","hinter");
    return pj;
}

gets me

<com.myComp.ORMTest.Pojo>
  <name>hansi</name>
  <hidden>hinter</hidden>
</com.myComp.ORMTest.Pojo>

Any ideas why the annotations are ignored?

Odds

Ok, this seems to be not the only problem in getting GAE, RESTlet and XStream working together. I'm looking for another solution now. – Odds

Hi, did the solution worked for you? How did you apply that? I'm having the same issues: #66794541 – Valuation

@fireburn , Sorry, I have no recollection of how I resolved the problem. This was 11 years ago. – Odds

Answer 1

You have to tell XStream to explicitly process annotations:

XStream xstream = new XStream();
xstream.processAnnotations(MyClass.class);

Or, you should add this code to tell XStream to process all annotations:

xstream.autodetectAnnotations(true);

Scrapbook

Just a note for other seekers: auto detection of annotations only works for serialization, not deserialization. You have to process each class (or an array of them) in order to parse XML. – Intercourse

Answer 2

Two things come to mind:

1.) Did you tell XStream to parse the annotations?

2.) Does your web framework maybe use proxies to access the pojos and those don't delegate the annotations? (happened to a friend with Apache Tapestry)

Embow

Great leads. Will start digging in that direction. Thanks – Odds