Hi Lifters,
It seems like I'm having problems to modify items that are already in
the database. What I do is, first find the item, then set a new value to
it and then save it. So far so good, or?
Because its a expensive filter process to find those items to modify, I
made a local copy of the sub-list that contains the most interesting
items. This sub-list is processed further on and when I finally know
which items to modify, I look those ones up in the database again and
set the values. I hope it makes sence...
thanks
Here's the code:
def joinOrders(o1: LimitOrder): Unit = {
/* select all orders where status=NEW and where that.tradeType !=
order1.tradeType */
val newOrders =
LimitOrderMetaObj.findAll(By(LimitOrderMetaObj.status,
"NEW")).toList.filter(o2 => o2.tradeType.name != o1.tradeType.name)
def decideByTradeType: List[LimitOrder] = {
/* keep all orders where that.marketPoint <= order1.marketPoint
* sort the list from lowest to highest marketPoint */
if (o1.tradeType.name == "BUY")
newOrders.filter(o2 => o2.marketPoint.is <=
o1.marketPoint.is).sort((s, t) => s.marketPoint.is < t.marketPoint.is)
/* keep all orders where that.marketPoint >= order1.marketPoint
* sort the list from highest to lowest marketPoint */
else //because there are only two different types! Its the same
as: if (o1.tradeType.name == "SELL")
newOrders.filter(o2 => o2.marketPoint.is >=
o1.marketPoint.is).sort((s, t) => s.marketPoint.is > t.marketPoint.is)
}
var i = 0
var done = false
val remainingOrders = decideByTradeType
while (i < remainingOrders.length && !done) {
if (remainingOrders(i).lots == o1.lots) {
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
remainingOrders(i).id)).map(_.status.set("OPEN")) openOr 0L
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
remainingOrders(i).id)).map(_.save) openOr 0L
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
o1.id)).map(_.status.set("OPEN")) openOr 0L
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
o1.id)).map(_.save) openOr 0L
done = true
}
if (remainingOrders(i).lots.is < o1.lots.is) {
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
remainingOrders(i).id)).map(_.status.set("OPEN")) openOr 0L
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
remainingOrders(i).id)).map(_.save) openOr 0L
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
o1.id)).map(_.lots.set(o1.lots.is - remainingOrders(i).lots.is)) openOr 0L
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
o1.id)).map(_.save) openOr 0L
}
if (remainingOrders(i).lots.is > o1.lots.is) {
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
o1.id)).map(_.status.set("OPEN")) openOr 0L
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
o1.id)).map(_.save) openOr 0L
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
remainingOrders(i).id)).map(_.lots.set(remainingOrders(i).lots.is -
o1.lots.is)) openOr 0L
LimitOrderMetaObj.find(By(LimitOrderMetaObj.id,
remainingOrders(i).id)).map(_.save) openOr 0L
done = true
}
i = i + 1
}
}
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