Entity constraint violation - rollback

[peyrusaubes]

Hello

I'd like to create a method helper on EJB3 entity bean in order to
check that a set does not violates any constraint.
ex, in acccount class, i create à debit(a) method, implementing it:

public void debit(int a)
 if (this.amount>a) {
 setAmount(getAmount()-a)
 } else {
 ?????
 }

if this account doesn't have enough money, I'd like to rollback the
current transaction, in ejb2 I used setRollBackOnly on the context, I did not find any equivalent. The only solution I found is to throw a runtimexception (dirty solution IMO)

[alrubinger]

You should be able to inject the context of your EJB depending upon the type of bean:

@Resource
 private transient SessionContext ctx;

- or -

@Resource
 private transient EntityContext ctx;

...and call ctx.setRollbackOnly() as appropriate.

S,
ALR