Re: [forge-dev] Auto instantiate properties of custom type
I don't believe it will upset JPA, no. It *would* if you did:
public Address getAddress() {
if ( this.address == null ) { this.address = new Address(); }
return address;
}
Because JPA will call setAddress(null) and then getAddress() and get back a different
result. But if the field is just initialised to a default value...
private Address address = new Address();
...then JPA will overwrite it with setAddress(null) and it'll be okay.
But sure, if there is a nicer way to do it I don't mind doing it a different way?
Richard.
On 9/11/2011 4:11 PM, Jason Porter wrote:
Won't this cause issues with the JPA impl? From my conversations
with the Hibernate devs if what is returned from the property (getter/field) is not what
was set by JPA then extra db actions are performed.
IMO, this an integration point for the JSF or EL specs. I think, though, this is an
instantiation issue and should be done with a view action instead.
Sent from my iPhone
On Nov 8, 2011, at 21:37, Richard Kennard <richard(a)kennardconsulting.com> wrote:
> Hi guys,
>
> As you're probably aware, in JSF if I do...
>
> #{customer}
>
> ...then a Customer object will get instantiated 'just in time'. But if I
do...
>
> #{customer.address.street}
>
> ...then 'address' will *not* get instantiated just in time. So if you use
Forge to do...
>
> entity --named Customer
> field custom --named address
> [what custom type m'lord?] com.test.domain.Address
>
> Then although you'll get a UI that includes a Customer with an embedded Address,
it'll fail as soon as you try to save. There isn't a very good solution to
> this, so can I suggest the simplest?
>
> When Forge generates field/getter/setter for a custom type (possibly limited to the
project's domain package), could it do:
>
> @Column
> private Address address *=new Address();*
>
> public Address getAddress() {
> return this.address;
> }
>
> public void setAddress(final Address address) {
> this.address = address;
> } }
>
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