Support of private fields in Resource

[frecco75]

Today, when we build a Model we need to have public fields because the generated ModelHelper references fields directly.

I have changed the behavior to allow developer to use private fields if any setter exists, which is more standard according to the JavaBeans specification.

Example :

@ContentType("cat")
public class MyModel extends Resource {
  @Field public String publicField;
  @Field private String privateField;
  @Field private String privateFluentField;
 
  //Standard setter
  public void setPrivateField(String privateField) {
    this.privateField = privateField;
  }
 
  //Fluent setter
  public void privateFluentField(String privateFluentField) {
    this.privateFluentField = privateFluentField;
  }
}

will produce a ModelHelper containing

public MyModel fromCursor(Cursor cursor) {
    MyModel result = new MyModel();
    setContentType(result, "cid");
    result.publicField = cursor.getString(3);
    result.setPrivateField(cursor.getString(4));
    result.privateFluentField(cursor.getString(5));
    return result;
  }