symfony doctrine自定义dql

In sql I have this

AND oir.id IS NULL
AND IF(t.work_type = 'contract' AND te.status != 2, FALSE, TRUE)    

and I don't know how to correct create custom DQL for this

IF(t.work_type = 'contract' AND te.status != 2, FALSE, TRUE)    

help, give me dql please for this IF () I think logic like this

IF (confition and confition, (return if true), (return if false))

example return true or false

OR how interpretation this for queryBuilder ?

I don't remember if DQL support if.. I think that no.
You can use case when ... then ... else ... end instead.

AND oir.id IS NULL
AND (CASE WHEN t.work_type = 'contract' AND te.status != 2 THEN FALSE ELSE TRUE END) = TRUE

Why do you need so if in where clause? You can use this expression without if. Just t.work_type = 'contract' AND te.status != 2 without if will return same result(true/false) as with if.