Using Caché Objects - InterSystems Documentation

change the second vaccination record associated with a Patient object using the following
code:
Do pat.Vaccination.SetAt(vac,2)
where pat is the OREF of the Patient object and vac is the OREF of the new Vaccination
object for slot 2.
You can create a new object, populate it, then insert it into slotnusing the following syntax:
Do oref.PropertyName.InsertAt(ItemOref,n)
where oref is the OREF of the specific object to associate the data with,PropertyName is the
name of the list property, and ItemOref is the OREF of the object. Again, insert a new list
item increments the value of all previously-existing list items. For example, you can add a
new vaccination record in the third slot of a Vaccination list of a Patient object using the
following code:
Do pat.Vaccination.InsertAt(vac,3)
where pat is the OREF of the Patient object and vac is the OREF of the Vaccination object.
10.4.3.3 Populating Lists of Persistent Objects
All of the syntax described for populating lists of embedded objects also applies for lists of
persistent objects if the objects are in memory. In addition, you can populate lists of persistent
objects with objects that are not in memory.
You can populate a list of objects in several ways. You can add an object to the end of the
list using the following syntax:
Do oref.PropertyName.InsertObject(itemoid)
where oref is the OREF of the specific object to associate the data with,PropertyName is the
name of the list property, and itemoid is the OID of the object. For example, you can add a
new dog to the list of pets owned by a person using the following code:
Do per.Pets.InsertObject(DogOid)
where per is the OREF of the Person object and DogOid is the OID of the Dog object.
You can add an object to slot n using the following syntax:
Do oref.PropertyName.SetObjectAt(ItemOid,n)
Modifying Objects
where oref is the OREF of the specific object to associate the data with, PropertyName is the
name of the list property, and ItemOid is the OID of the object. For example, you can change
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