AccountTransactionSessionpublic class AccountTransactionSession extends com.imaginary.lwp.BaseSession implements AccountTransaction
| Constructors Summary |
|---|
public AccountTransactionSession()
super();
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| Methods Summary |
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| public void | deposit(com.imaginary.lwp.Identifier id, AccountFacade acct, double amt)
Transaction trans = Transaction.getCurrent(id);
boolean proc = trans.isInProcess();
boolean success = false;
if( amt < 0.0 ) {
withdraw(id, acct, -amt);
}
else {
if( !proc ) {
trans.begin();
}
try {
acct.credit(id, amt);
success = true;
}
finally {
if( success ) {
if( !proc ) {
try { trans.end(); }
catch( TransactionException e ) { }
}
}
else {
trans.rollback();
}
}
}
| | public void | transfer(com.imaginary.lwp.Identifier id, AccountFacade src, AccountFacade targ, double amt)
Transaction trans = Transaction.getCurrent(id);
boolean success = false;
if( amt < 0.0 ) {
AccountFacade tmp = targ;
amt = -amt;
targ = src;
src = tmp;
}
trans.begin();
try {
withdraw(id, src, amt);
deposit(id, targ, amt);
success = true;
}
finally {
if( success ) {
try { trans.end(); }
catch( TransactionException e ) { }
}
else {
trans.rollback();
}
}
| | public void | withdraw(com.imaginary.lwp.Identifier id, AccountFacade acct, double amt)
Transaction trans = Transaction.getCurrent(id);
boolean proc = trans.isInProcess();
boolean success = false;
if( amt < 0.0 ) {
deposit(id, acct, -amt);
}
else {
double bal;
if( !proc ) {
trans.begin();
}
try {
bal = acct.getBalance();
if( bal < amt ) {
throw new InsufficientFundsException();
}
acct.credit(id, -amt);
success = true;
}
finally {
if( success ) {
if( !proc ) {
try { trans.end(); }
catch( TransactionException e ) { }
}
}
else {
trans.rollback();
}
}
}
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