What corresponds to line 92 in your code ?
-----Message d'origine-----
De : neo anderson [mailto:javadeveloper...@yahoo.co.uk]
Envoyé : lundi 28 septembre 2009 14:23
À : users@tapestry.apache.org
Objet : Re: Bean editor model for User already contains a property model for
property 'account'
Now I use the folloing method to create synthetic property
PropertyConduit accountProperty = source.create(User.class,
"account");
ClassPropertyAdapter cpa = access.getAdapter(User.class);
PropertyAdapter pa = cpa.getPropertyAdapter("account");
String dt = analyzer.identifyDataType(pa);
model.add("account",accountProperty).dataType(dt).label("Account").sortable(false);
However, it throws NullPointerException without further detail.
Caused by: java.lang.NullPointerException
at org.jecommerce.pages.Register.getRegisterModel(Register.java:92)
at
$PropertyConduit_12400839bf9.get($PropertyConduit_12400839bf9.java)
at
org.apache.tapestry5.internal.bindings.PropBinding.get(PropBinding.java:58)
... 91 more
What additional information I need to provide (or anything is missing) so
that it won't throw this error?
Thanks for help.
Thiago H. de Paula Figueiredo wrote:
>
> Em Wed, 23 Sep 2009 17:58:08 -0300, neo anderson
> <javadeveloper...@yahoo.co.uk> escreveu:
>
>
>> I have an domain object named User, in which it has a field called
>> `account'. However, the User object only provide method getAccount(),
>> but does not
>> provide method setAccount(String account).
>
> BeanModelSource (used when a BeanModel is needed and you don't provide
> one) ignores read-only properties. It doesn't care about fields, just
> about getters and setters.
>
>> In the page object e.g. Register, in which I build a BeanModel using
>> BeanModelSource.create(User.class, ...)
>
> This method is deprecated. use createDisplayModel() or createEditModel()
> instead.
>
>> 1.) in the Register page object, BeanModel does not use
>> `BeanModel.add("account",null).label("Account").sortable(false)' method
>> to create account field.
>>
>> Error:
>> aused by: java.lang.RuntimeException: Bean editor model for User does not
>> contain a property named 'account'. Available properties: address, name,
>> password, sex.
>
> You can't reorder a model using some property that doesn't exist.
>
>> Caused by: java.lang.RuntimeException: Bean editor model for User already
>> contains a property model for property 'account'.
>
> You can't add the same property twice in the same model.
>
>> What is the correct way to add a column that the User object doesn't
>> provide get/set method at the same time?
>
> For BeanEditForm or BeanEditor, you'll need to provide your own
> PropertyConduit to model.add(String property, PropertyConduit conduit).
>
> --
> Thiago H. de Paula Figueiredo
> Independent Java consultant, developer, and instructor
> http://www.arsmachina.com.br/thiago
>
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>
>
>
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