Property superclass for object values, for internal use only
A logical value determines if classnames of referenced properties are stored. 0 - store only the ID; 1 - store the two element form of the OID 2 - store the three element form of the OID (applies only to streams currently)
Returns an oref, performing swizzling if necessary it returns "" ($$$NULLOREF) if there is no oref and the id=""
Obtains the state/id of the referenced object if swizzling has not occurred, it simply returns the stored state else it references the specified object force = an optional parameter, if its value is 1 then if the referenced object is an ID object it must return its ID, which may force it to file itself. no code for this method if the property is a datatype
Stores simply calls GetObject() with decomposes Oid into Id
Returns an oref, performing swizzling if necessary it returns "" ($$$NULLOREF) if there is no oref and the id="". If noswizzle is passed as true then this will just return the current value for the property, so if it has been swizzled already then it will return the oref, if it has not been swizzled it will return "" ($$$NULLOREF).
Can be used to test whether an embedded object is in NULL state exists for embedded object only, not for persistent objects
Creates a new object for the referenced property
Set the property to an oref value if the new oref is different from an old oref, the old object is closed
Stores a new value for the OID of the referenced object. if swizzling has not occurred, it simply stores the OID (after perhaps stripping the class name if CLASSNAME=0). if swizzling has occurred, then it references the object to obtain its OID. If it is the same, then nothing happens. If they are different then the old object is closed and the new OID is stored.
Stores simply calls SetObject() with constructed Oid