Unable to serialize custom object activeandroid - sqlite

Question

I am trying to store some custom object as a blob in SqlLite db. The object is a field of a class extending Model. All other fields (of primitive types) go successfully in the DB, but the custom one - it is null always.
#Table(name = "data")
public class Data extends Model {
#Column(name = "number")
private int number;
#Column(name = "blob")
private Contact blob;
...
This is how i store the entity
Data data = new Data(0, new Contact(id, name, number));
data.save();
Here is the contact class
public class Contact {
private String id;
private String name;
private String number;
...
I believe a TypeSerializer is needed, so I've created one.
public class ContactSerializer extends TypeSerializer {
private static final String ELEMENTS_DELIMITER = ";";
#Override
public Object deserialize(Object asString) {
String[] afterSplit = ((String) asString).split(ELEMENTS_DELIMITER);
return new Contact(afterSplit[0], afterSplit[1], afterSplit[2]);
}
#Override
public Class<?> getDeserializedType() {
return Contact.class;
}
#Override
public SerializedType getSerializedType() {
return SerializedType.STRING;
}
#Override
public Object serialize(Object asContact) {
Contact temp = (Contact) asContact;
return temp.getId() + ELEMENTS_DELIMITER + temp.getName() + ELEMENTS_DELIMITER
+ temp.getNumber();
}
}
When i query the db I got object with this particular field "Contact" as null always. Where might be the problem? Do I need to specify which is the TypeSerializer for my object? Or the implementation of TypeSerializer I've created is wrong?

Answer 1

You also need to extent Contact from Model:
#Table(name = "contact")
public class Contact extends Model{
#Column(name = "id")
private String id;
#Column(name = "name")
private String name;
#Column(name = "number")
private String number;
}
Now everything should work out of the box. It's a bit late for a response but perhaps I will help someone else.