---File:	 ObjMgt.cdl

---Copyright:	 Matra Datavision 1995
---Version:	 1.2 

---History: 
--  Version	Date		Purpose
--         	Feb  3 1995	Creation
--         	Dec  15 1996    Version CSFDB

package ObjMgt 

---Purpose: This package defines services to manage the storage grain of data 
--          produced by applications and those classes to manage persistent 
--          extern reference.

uses

    PCollection,
    Storage,
    CDM,PCDM, TCollection

is

    --deferred class RetrievalDriver;
    ---Purpose: to retrieve ExternShareable objects in the framework.
 

    deferred class ExternShareable;
    ---Purpose: Defines the root persistent object which can be persistent 
    --          extern reference.

    private class ExternRef;
    ---Purpose: Defines (objet-relais) to implement extern reference.

    private class PSeqOfExtRef instantiates HSequence from 
    	    PCollection (ExternRef from ObjMgt);

end ObjMgt;