sundvall@bio.embnet.se (Mats Sundvall) (05/27/91)
I am aboout to use the object IO mechanism in NIHCL 3.0 to be able to tranfer
data transactions between two machines. What I have not figured out yet is
if you transfer an object that contains pointers to other objects, are the
objects pointed to transfered as well.
class Transaction : public Object {
private:
int counter;
someObject *typeofdata;
someOtherObject data;
..
}
I do not want typeofdata to be transfered in every transaction because that
will be to much overhead.
Mats.Sundvall@sunbrk.FidoNet.Org (Mats Sundvall) (05/28/91)
I am aboout to use the object IO mechanism in NIHCL 3.0 to be able to tranfer
data transactions between two machines. What I have not figured out yet is
if you transfer an object that contains pointers to other objects, are the
objects pointed to transfered as well.
class Transaction : public Object {
private:
int counter;
someObject *typeofdata;
someOtherObject data;
..
}
I do not want typeofdata to be transfered in every transaction because that
will be to much overhead.
* Origin: Seaeast - Fidonet<->Usenet Gateway - sunbrk (1:343/15.0)kgorlen@alw.nih.gov (Keith Gorlen) (05/31/91)
In article <1991May27.145953.115@bio.embnet.se>, sundvall@bio.embnet.se (Mats Sundvall) writes: |> |> I am aboout to use the object IO mechanism in NIHCL 3.0 to be able to tranfer |> data transactions between two machines. What I have not figured out yet is |> if you transfer an object that contains pointers to other objects, are the |> objects pointed to transfered as well. |> |> |> class Transaction : public Object { |> |> private: |> int counter; |> someObject *typeofdata; |> someOtherObject data; |> |> .. |> |> } |> |> |> I do not want typeofdata to be transfered in every transaction because that |> will be to much overhead. |> |> You will have to write a storer() member function and a readFrom() constructor for class Transaction that will store/read instances of class Transaction. These functions can decide whether or not to store/read typeofdata. Note that if you store a data structure that contains multiple Transaction instances, and some or all of these instances point to a shared instance of someObject, and your write the storer()/readFrom() for class Transaction to unconditionally store/read typeofdata, the shared someObject instances will be stored only once anyway. -- Keith Gorlen phone: (301) 496-1111 Building 12A, Room 2033 FAX: (301) 402-0007 National Institutes of Health uucp: uunet!kgorlen%alw.nih.gov Bethesda, MD 20892 Internet: kgorlen@alw.nih.gov