Need help in transforming this SQL statement to GORM - grails

Question

select
b.security_type,
b.symbol,
b.security_description,
b.trade_date_qty as 'axys_qty',
c.trade_date_qty as 'fidelity_qty',
c.trade_date_qty - b.trade_date_qty as 'qty_diff',
b.cost_basis as 'axys_cost',
c.cost_basis as 'fidelity_cost',
c.cost_basis - b.cost_basis as 'cost_diff'
from
account a
inner join advent_position b on a.fixed_account_number = b.account_number
inner join fidelity_position c on a.fixed_account_number = c.account_number and b.symbol = c.symbol
where
b.account_number = '636296651'
Basically, I have the ff. domains: Account, AdventPosition, FidelityPosition. I haven't set the relationship yet. I'm just wondering if there's a way to replicate the logic above using Criteria or HQL. Forgive me, I'm still new to Grails.
Thank you for any leads on this.

Answer 1

It'd be something close to this:
String hql = '''
select
b.securityType,
b.symbol,
b.securityDescription,
b.tradeDateQty,
c.tradeDateQty,
c.tradeDateQty - b.tradeDateQty,
b.costBasis,
c.costBasis,
c.costBasis - b.costBasis
from
Account a, AdventPosition b, FidelityPosition c
where
a.fixedAccountNumber = b.accountNumber
and a.fixedAccountNumber = c.accountNumber
and b.symbol = c.symbol
and b.accountNumber = :accountNumber
'''
def accountNumber = '636296651'
def results = Account.executeQuery(hql, [accountNumber: accountNumber])
The results will be an ArrayList of Object[], so you can iterate it with something like
for (row in results) {
def securityType = row[0]
def symbol = row[1]
def securityDescription = row[2]
def axys_qty = row[3]
def fidelity_qty = row[4]
def qty_diff = row[5]
def axys_cost = row[6]
def fidelity_cost = row[7]
def cost_diff = row[8]
}
I replaced the hard-coded account number with a named parameter; you can use regular ? like in SQL if you prefer and run 'def results = Account.executeQuery(hql, [accountNumber])', and of course if you intented it to be hard-coded then restore that and don't pass in the 2nd parameter, just run 'def results = Account.executeQuery(hql)'

Answer 2

just sharing the solution that I came up (while waiting for an answer :P) but note that the previous answer is way much better and faster:
def acc = Account.findByFixedAccountNumber('636296651')
List advPos = AdventPosition.findAllByAccountNumber('636296651')
List fidPos = advPos.collect {
FidelityPosition.findAllByAccountNumberAndSymbol('636296651', it.symbol)
}
def item = [:]
def res = []
def limit = advPos.size() - 1
for(i in 0..limit){
item.security_type = advPos[i].securityType
item.symbol = advPos[i].symbol
item.security_description = advPos[i].securityDescription
item.axys_qty = advPos[i].tradeDateQty
item.fidelity_qty = fidPos[i].tradeDateQty
item.qty_diff = item.fidelity_qty - item.axys_qty
item.axys_cost = advPos[i].costBasis
item.fidelity_cost = fidPos[i].costBasis
item.cost_diff = item.fidelity_cost - item.axys_cost
res.add(item)
}