public virtual int LockValue(string name, string pattern) /* throws Net.Vpc.Upa.Exceptions.UPAException */
{
Net.Vpc.Upa.Impl.PrivateSequence r = GetSequence(name, pattern);
if (r.IsLocked())
{
throw new Net.Vpc.Upa.Exceptions.UPAException("Already locked");
}
r.SetLocked(true);
r.SetLockUserId(entity.GetPersistenceUnit().GetUserPrincipal().GetName());
r.SetLockDate(new Net.Vpc.Upa.Types.DateTime());
entity.CreateUpdateQuery().SetValues(r).ById(entity.CreateId(name, pattern));
return(r.GetValue());
}
public virtual int Unlock(string name, string pattern) /* throws Net.Vpc.Upa.Exceptions.UPAException */
{
Net.Vpc.Upa.Impl.PrivateSequence r = GetSequence(name, pattern);
if (!r.IsLocked())
{
throw new Net.Vpc.Upa.Exceptions.UPAException("not locked");
}
if (!r.GetLockUserId().Equals(entity.GetPersistenceUnit().GetUserPrincipal().GetName()))
{
throw new Net.Vpc.Upa.Exceptions.UPAException("locked by others");
}
int v = r.GetValue();
r.SetLocked(false);
r.SetLockUserId(null);
r.SetLockDate(null);
entity.CreateUpdateQuery().SetValues(r).ById(entity.CreateId(pattern));
return(v);
}
public int NextValue0(string name, string pattern, int initialValue, int increment, bool autoCreate) /* throws Net.Vpc.Upa.Exceptions.UPAException */
{
Net.Vpc.Upa.Impl.PrivateSequence r = autoCreate ? GetOrCreateSequence(name, pattern, initialValue, increment) : GetSequence(name, pattern);
if (r.IsLocked() && !r.GetLockUserId().Equals(entity.GetPersistenceUnit().GetUserPrincipal().GetName()))
{
throw new Net.Vpc.Upa.Exceptions.UPAException("Already locked");
}
int v = r.GetValue();
r.SetValue(v + r.GetIncrement());
r.SetLocked(false);
r.SetLockUserId(null);
r.SetLockDate(null);
Net.Vpc.Upa.Expressions.Expression idToExpression = entity.GetBuilder().IdToExpression(entity.CreateId(name, pattern), entity.GetName());
Net.Vpc.Upa.Expressions.And condition = new Net.Vpc.Upa.Expressions.And(idToExpression, new Net.Vpc.Upa.Expressions.Or(new Net.Vpc.Upa.Expressions.Different(new Net.Vpc.Upa.Expressions.Var(new Net.Vpc.Upa.Expressions.Var(entity.GetName()), "locked"), Net.Vpc.Upa.Expressions.Literal.TRUE), new Net.Vpc.Upa.Expressions.Equals(new Net.Vpc.Upa.Expressions.Var(new Net.Vpc.Upa.Expressions.Var(entity.GetName()), "lockUserId"), new Net.Vpc.Upa.Expressions.Param("lockUserId", entity.GetPersistenceUnit().GetUserPrincipal().GetName()))));
Net.Vpc.Upa.QueryBuilder q = null;
try {
q = entity.CreateQueryBuilder().ByExpression(condition);
q.SetUpdatable(true);
int oldValue;
foreach (Net.Vpc.Upa.Impl.PrivateSequence s in q.GetEntityList <Net.Vpc.Upa.Impl.PrivateSequence>())
{
oldValue = s.GetValue();
s.SetValue(oldValue + s.GetIncrement());
q.UpdateCurrent();
// System.out.println(">>>>>>>>>>>>>>>>>>> nextValue(" + name + "," + pattern + ") =>> "+oldValue);
return(oldValue);
}
} finally {
if (q != null)
{
q.Close();
}
}
//not found !
//check if problem of locking
if (entity.GetEntityCount(new Net.Vpc.Upa.Expressions.And(idToExpression, new Net.Vpc.Upa.Expressions.Equals(new Net.Vpc.Upa.Expressions.Var("locked"), Net.Vpc.Upa.Expressions.Literal.TRUE))) > 0)
{
throw new Net.Vpc.Upa.Exceptions.UPAException("Already locked");
}
throw new Net.Vpc.Upa.Exceptions.UPAException("Unexpected error");
}