To add a synthetic property, you only have to call add(propertyName) on the BeanModel.
By setting the datatype on the resulting PropertyModel or by using t:parameter, you will be able to create the display for the corresponding property in your beaneditform. 2009/9/28 neo anderson <javadeveloper...@yahoo.co.uk> > > It is the line where PropertyConduitSource (variable source.create() ... ) > create synthetic property account as the following code. > > PropertyConduit accountProperty = source.create(User.class, > "account"); > > Is this the right way to create PropertyConduit? I tried to change it using > String.class, but the error is the same (NullPointerException). I think > there should have something I miss, but that's the method I found on the > mailinglist. I am confused indeed. > > > http://www.nabble.com/T5%3A-Working-with-BeanModel-td18231888.html#a18352011 > > > > > ccordenier wrote: > > > > 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 > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > >> For additional commands, e-mail: users-h...@tapestry.apache.org > >> > >> > >> > > > > -- > > View this message in context: > > > http://www.nabble.com/Bean-editor-model-for-User-already-contains-a-property-model-for-property-%27account%27-tp25531292p25644707.html > > Sent from the Tapestry - User mailing list archive at Nabble.com. > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org > > For additional commands, e-mail: users-h...@tapestry.apache.org > > > > > > > > > > Ce message et les pièces jointes sont confidentiels et réservés à l'usage > > exclusif de ses destinataires. 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