Re: [json-lib-user] Problems with .toJava

[Kiril <kir...@gm...>]

Hi Andres,

Thank you for the reply.

I tested this, and it works!

I noticed that by creating the object as below, you can omit the need for
the Map:

            JSONObject jsonObject = new JSONObject();
            JsonConfig jsonConfig = new JsonConfig();
            jsonConfig.setRootClass( MyBean.class );
            jsonObject = (JSONObject)JSONSerializer.toJSON(jsonString);
            MyBean myBean = (MyBean)JSONSerializer.toJava(jsonObject,
jsonConfig);

Also, the example misses one line:
           MorpherRegistry morpherRegistry = JSONUtils.getMorpherRegistry();

Again, thanks a lot!



On Sat, May 10, 2008 at 11:42 AM, Andres Almiray <aal...@ya...> wrote:

> Hi Kiril,
>
> That code would surely work but ties your domain to Json-lib, the docs (
> http://json-lib.sourceforge.net/usage.html) include an alternative
> solution to your problem: registering a BeanMorpher.
>
>
>    1. class MyBean{
>    2.    private List data;
>    3.    // getters & setters
>    4. }
>    5.
>    6. class Person{
>    7.    private String name;
>    8.    // getters & setters
>    9. }
>    10.
>    11. ...
>    12.
>    13. String json = "{'data':[{'name':'Wallace'},{'name':'Grommit'}]}"
>    ;
>    14. Map classMap = new HashMap();
>    15. classMap.put( "data", Person.class );
>    16.
>    MyBean bean = JSONObject.toBean( JSONObject.fromObject(json), MyBean.
>    class, classMap );
>
>
>    1. Morpher dynaMorpher = new BeanMorpher( Person.class
>    , JSONUtils.getMorpherRegistry() );
>    2. morpherRegistry.registerMorpher( dynaMorpher );
>    3. List output = new ArrayList();
>    4. for( Iterator i = bean.getData().iterator(); i.hasNext(); ){
>    5.    output.add( morpherRegistry.morph( Person.class
>    , i.next() ) );
>    6. }
>    7. bean.setData( output );
>
> Cheers,
> Andres
>
> -------------------------------------------
> http://jroller.com/aalmiray
> http://www.linkedin.com/in/aalmiray
> --
> What goes up, must come down. Ask any system administrator.
> There are 10 types of people in the world: Those who understand binary,
> and those who don't.
> To understand recursion, we must first understand recursion.
>
>
> ----- Original Message ----
> From: Kiril <kir...@gm...>
> To: jso...@li...
> Sent: Saturday, May 10, 2008 12:54:57 AM
> Subject: Re: [json-lib-user] Problems with .toJava
>
> Ok,
>
> I'm not a newbie anymore :)
>
> Here is the solution, if anyone is interested. I modified the setter in
> the root class for the list of children (Group classes):
>
> public void setGroups(List<Group> groups) {
>         for(int i=0; i < groups.size(); i++) {
>             Group grp = null;
>             BeanMorpher mrph = new BeanMorpher(Group.class,
> JSONUtils.getMorpherRegistry());
>             grp = (Group)mrph.morph(groups.get(i));
>             this.groups.add(grp);
>         }
>     }
>
> Yahoo!!!... Works!
>
>
> On Sat, May 10, 2008 at 2:55 AM, Kiril <kir...@gm...> wrote:
>
> > May be attaching the json string will help:
> >
> >
> > {"groups":[{"comparison":"And","fields":[{"comparison":"Near","field":"subject","values":["Daily","Report"]},{"comparison":"Equals","field":"message","values":["November"]}],"nextGroupComparison":"Or"},{"comparison":"Null","fields":[{"comparison":"Equals","field":"message","values":["October"]}],"nextGroupComparison":"Null"}],"revision":0,"version":1}
> >
> >
> > On Sat, May 10, 2008 at 2:54 AM, Kiril <kir...@gm...> wrote:
> >
> > > Hi all,
> > >
> > > I'm newbie to json-lib.
> > > I want to use it to serialize a class with a List<Class>, containing
> > > number of subclasses.
> > >
> > > While toJSON works fine, passing back the same string to toJava works
> > > only partially - the root class is generated Ok, but the children, in the
> > > List are MorphDynaBean's.
> > >
> > > Here is the code:
> > >
> > > JSONUtils.getMorpherRegistry().registerMorpher(new
> > > EnumMorpher(GroupComparison.class));
> > >             JSONUtils.getMorpherRegistry().registerMorpher(new
> > > EnumMorpher(NextGroupComparison.class));
> > >             JSONUtils.getMorpherRegistry().registerMorpher(new
> > > EnumMorpher(FieldComparison.class));
> > >             JSONObject jsonObject = new JSONObject();
> > >             JsonConfig jsonConfig = new JsonConfig();
> > >             jsonConfig.setRootClass( Filter.class );
> > >             jsonConfig.setEnclosedType(List.class);
> > >             jsonObject =
> > > (JSONObject)JSONSerializer.toJSON(jsonString);
> > >             Filter filter = (Filter)JSONSerializer.toJava(jsonObject,
> > > jsonConfig);
> > >
> > > The Filter class contains List of Group classes, but these are
> > > generated as a MorphDynaBean...
> > >
> > > Thanks in advance for any help!
> > >
> > > Kiril.
> > >
> >
> >
>
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