Purpose:
A DDO is a special class of DDOBase that keeps the information about its associated datastore and has add, retrieve, update and delete methods. With the help of the datastore, it can send itself in and out of datastore. A datastore query returns a collection of DKDDO objects.
Heirarchy:
dkDataObjectBase dkDataObject DKDDOBase DKDDO
Class summary:
class dkDatastore; class DKDDODef; class DKEXPORT DKDDO : public DKDDOBase { public: DKDDO(ushort initialSize = DK_DDO_INITIAL_SIZE); DKDDO(const char* objectType, ushort initialSize = DK_DDO_INITIAL_SIZE); DKDDO(dkDatastore* ds, const char* objectType, ushort initialSize = DK_DDO_INITIAL_SIZE); DKDDO(const DKPid& pid, ushort initialSize = DK_DDO_INITIAL_SIZE); DKDDO(dkDatastore* ds, const DKPid& pid, ushort initialSize = DK_DDO_INITIAL_SIZE); DKDDO(dkDatastore* ds, const DKPid& pid, DKDDODef* ddoDef); virtual ~DKDDO(); virtual void setDatastore(dkDatastore* ds); virtual dkDatastore* getDatastore() const; virtual short protocol() const; virtual dkDataObjectBase& add(); virtual dkDataObjectBase& add(long option); virtual dkDataObjectBase& add(const DKNVPair* parms, long arraySize); virtual dkDataObjectBase& retrieve(); virtual dkDataObjectBase& retrieve(long option); virtual dkDataObjectBase& retrieve(const DKNVPair* parms, long arraySize); virtual dkDataObjectBase& update(); virtual dkDataObjectBase& update(long option); virtual dkDataObjectBase& update(const DKNVPair* parms, long arraySize); virtual dkDataObjectBase& del(); virtual dkDataObjectBase& del(long option); virtual dkDataObjectBase& del(const DKNVPair* parms, long arraySize); };
Exceptions:
DKDDO throws the same exceptions thrown by DKDDOBase.
Members:
DKDDO(ushort initialSize = DK_DDO_INITIAL_SIZE); DKDDO(const char* objectType, ushort initialSize = DK_DDO_INITIAL_SIZE); DKDDO(dkDatastore* ds, const char* objectType, ushort initialSize = DK_DDO_INITIAL_SIZE); DKDDO(const DKPid& pid, ushort initialSize = DK_DDO_INITIAL_SIZE); DKDDO(dkDatastore* ds, const DKPid& pid, ushort initialSize = DK_DDO_INITIAL_SIZE); DKDDO(dkDatastore* ds, const DKPid& pid, DKDDODef* ddoDef); virtual ~DKDDO();
A DDO object can be created by calling the constructor with or without supplying any parameter, or by copying information from another DDO.
virtual void setDatastore (dkDatastore* ds);
virtual dkDatastore* getDatastore() const;
virtual short protocol() const;
virtual dkDataObjectBase& add(); virtual dkDataObjectBase& add(long option); virtual dkDataObjectBase& add(const DKNVPair* parms, long arraySize); virtual dkDataObjectBase& retrieve(); virtual dkDataObjectBase& retrieve(long option); virtual dkDataObjectBase& retrieve(const DKNVPair* parms, long arraySize); virtual dkDataObjectBase& update(); virtual dkDataObjectBase& update(long option); virtual dkDataObjectBase& update(const DKNVPair* parms, long arraySize); virtual dkDataObjectBase& del(); virtual dkDataObjectBase& del(long option); virtual dkDataObjectBase& del(const DKNVPair* parms, long arraySize);
(c) Copyright International Business Machines Corporation 1996, 2003. IBM Corp. All rights reserved.