Oracle C++ Call Interface Programmer's Guide

Type Inheritance
A subtype of NOT INSTANTIABLE can override any of the NOT INSTANTIABLE
methods of the supertype and provide concrete implementations. If there are any
NOT INSTANTIABLE methods remaining, the subtype must also necessarily be
declared as NOT INSTANTIABLE.
A NOT INSTANTIABLE subtype can be defined under an instantiable supertype.
Declaring a NOT INSTANTIABLE type to be FINAL is not useful and is not allowed.
OCCI Support for Type Inheritance
The following calls support type inheritance.
Connection::getMetaData()
This method provides information specific to inherited types. Additional attributes
have been added for the properties of inherited types. For example, you can get the
supertype of a type.
Bind and Define Functions
The setRef, setObject and setVector methods of the Statement class are
used to bind REF, object, and collections respectively. All these functions support
REF, instance, and collection element substitutability. Similarly, the corresponding
getxxx methods to fetch the data also support substitutability.
OTT Support for Type Inheritance
Class declarations for objects with inheritance are similar to the simple object
declarations except that the class is derived from the parent type class and only the
fields corresponding to attributes not already in the parent class are included. The
structure for these declarations is as follows:
class : public {
protected:
;
.
.
.
;
public:
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