What are the drawbacks of using collections that do not implement ManageableCollection ? Will the cache system work as before ?
-----Message d'origine----- De : Guillaume Nodet [mailto:[EMAIL PROTECTED] Envoye : mardi 13 janvier 2004 18:12 A : OJB Users List Objet : RE: Problem using strongly typed collections Yes, I have one, but it cannot be used by PersistentFieldIntrospectorImpl because the getPropertyDescriptor().getWriteMethod() returns null. I think this is because the set accessor public void setBs( Collection ) is not recognized as a setter for the property public BList getBs() because they have not the same type. -----Message d'origine----- De : Larry V. Streepy, Jr. [mailto:[EMAIL PROTECTED] Envoye : mardi 13 janvier 2004 18:06 A : OJB Users List Objet : Re: Problem using strongly typed collections I know that it may have just been omitted from your example data model, but do you have a public void setBs( Collection ) method in A? Guillaume Nodet wrote: >The problem is the object model cannot be modified. > >-----Message d'origine----- >De : Thomas Mahler [mailto:[EMAIL PROTECTED] >Envoye : mardi 13 janvier 2004 17:41 >A : OJB Users List >Objet : Re: Problem using strongly typed collections > > >Hi Guilaume, > >Guillaume Nodet wrote: > > >>I've got an object model with strongly typed collections: >> >> class A { >> private BList bs; >> public BList getBs(); >> } >> >> class B { >> ... >> } >> >> class BList implements Collection { >> ... >> } >> >>When I store the object, everything is good, but when i read it later i've >>got an exception >>thrown from AbstractPersistentField.set when trying to set the B >> >> >collection, > > >>which is a >>ManageableCollection. >> >> > >IMO the is caused by the fact that you Blist attribute is now filled >with a ManeageableCollection and not with BList! > >You have to tell in the collection-descriptor that the "bs" attribute >must use a special collection-class="BList". > >To make this work You BList must implement the interface >o.a.ojb.broker.ManageableCollection. > >See tutorial 3 for more details. > > > >>OJB was configured to use >>PersistentFieldDirectAccessImpl. >> >>So i tried with PersistentFieldIntrospectorImpl and adding a set method >> public void setBs(Collection list) >>but I've got the following exception: >> Can't get WriteMethod for property:bs in object:A >> >> >>Is there a way to store and read my collection without writing a custom >>PersistentField ? >> >> >> > >IMO this is only a secondary error! > >cheers, >thomas > > > >>Guillaume Nodet >> >> >> >>--------------------------------------------------------------------- >>To unsubscribe, e-mail: [EMAIL PROTECTED] >>For additional commands, e-mail: [EMAIL PROTECTED] >> >> >> >> > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] > > > > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] > > > > -- Larry V. Streepy, Jr. Senior Vice President and CTO Health Language, Inc. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
