--- James Carman <[EMAIL PROTECTED]> wrote: > You can use a "value object" and bind your form > fields to that. Then, when > you submit your form, you can create your "domain > object" from your value > object using the constructor. > > -----Original Message----- > From: Lukas Ruetz [mailto:[EMAIL PROTECTED] > Sent: Saturday, July 01, 2006 8:26 AM > To: users@tapestry.apache.org > Cc: [EMAIL PROTECTED] > Subject: Re: component-binding/property side-effect > (T4) > > Hi Henrik! > > Yes, I'm using sessions (comes from the > authentication). > But again - I'm doing nothing special - I just want > a component > to set attributes of a domain-object with values > from a form. The > object is provided by a parameter. > > Normally the attributes can be bound to the > form-fields. > But as I sayed my domain-object is immutable and the > values > can only be provided in the constructor, so the > typical mapping > is no solution - the domain-object has no > setter-methods. > I just wanted to know if there is a simple solution > to this? > > For better understanding here some code: > > --- page --- > class abstract MyPage extends BasePage { > public abstract DomainObj getDomainObj(); > public abstract void setDomainObj(DomainObj obj); > > public void formSubmit() { > DomainObj = getDomainObj(); > // .. work with it > } > ] > > <DEFANGED_form jwcid="@Form"> > <span jwcid="@MyComponent" > domainObj="ognl:domainObj" /> > </form> > > --- component --- > class abstract MyComponent extends BaseComponent { > private String _v1, _v2; > > @Parameter(required=true) > public abstract DomainObj getDomainObj(); > public abstract void setDomainObj(DomainObj obj); > > public String getValue1() { return v1; } > public String getValue2() { return v2; } > public void setValue1( String v1 ) { _value1 = v1; > } > public void setValue2( String v2 ) { > _value1 = v2; > // *** this here seems to be the problem > setDomainObj( new DomainObj(_1v,_v2) ); > } > } > > <span jwcid="@TextField" value="ognl:value1" /> > <span jwcid="@TextField" value="ognl:value2" /> > --- > > This is really ugly, so is there a correct way to do > that? Or is > it much more simple to wrap my immutable class in > one that has > setters for attributes? > > thx > lukas > > > Am Samstag, 1. Juli 2006 12:45 schrieb hv @ Fashion > Content: > > Hmm, could you describe the situation a bit more. > Are you using sessions > or > > not ? > > It sounds like you are trying to break the > encapsulation of the component. > > Are you looking to have an object attached to the > page which is accessed > by > > the component > > and presented as a component getter ? > > I can't think of why you would want to do that. > > > > But if you really want to do it, provide the page > property as a parameter > > of the component. > > > > Henrik > > > > "Lukas Ruetz" <[EMAIL PROTECTED]> skrev i en > meddelelse > > news:[EMAIL PROTECTED] > > > > > Hello! > > > > > > My current side-effect is, that I get the > correct (posted) binding-value > > > in my page-code only _once_! If I read the > abstract getter a second time > > > (still in the same request-cycle) I get an old > value from a previous > > > page-submit (a different page)! > > > > > > I want to have something like this: > > > page -> binding (1 object) -> myComponent -> > some properties -> > > > form-fields > > > > > > I have already heard of side-effects if the > property getters/setters > > > are not managed by tapestry (abstract methods). > Currently I have > > > implemented the property-setters (in the > component) my own to be able > > > to create the resulting object out of the > different (posted) > form-fields. > > > I can't use the usual mapping from > domain-object-attributes to > > > form-fields because the used class is immutable > and the values can > > > only be provided in the constructor. > > > > > > So my question is - Where to put the code that > creates my resulting > > > (immutable) object if I have to use abstract > property-setters? > > > Or is the only solution to use the typical > approach and a class that > > > just transports the values? > > > > > > thanks > > > lukas > > --------------------------------------------------------------------- > 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] > >
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