Oracle C++ Call Interface Programmer's Guide

How to Use the OTT Utility
In this example, the demoin.typ file contains the type to be translated, preceded
by the keyword TYPE. The structure of the OUTTYPE file is similar to the INTYPE
file, with the addition of information obtained by the OTT utility.
Once the OTT utility has completed the translation, the header file contains a C
structure representation of each type specified in the INTYPE file, and a null
indicator structure corresponding to each type.
Let us assume the employee type listed in the INTYPE file is defined as follows:
CREATE TYPE employee AS OBJECT
(
name VARCHAR2(30),
empno NUMBER,
deptno NUMBER,
hiredate DATE,
salary NUMBER
);
The header file, demo.h, generated by the OTT utility includes, among other items,
the following declarations:
struct employee
{
OCIString * name;
OCINumber empno;
OCINumber deptno;
OCIDate hiredate;
OCINumber salary;
};
typedef struct emp_type emp_type;
struct employee_ind
{
OCIInd _atomic;
OCIInd name;
OCIInd empno;
OCIInd deptno;
OCIInd hiredate;
OCIInd salary;
};
typedef struct employee_ind employee_ind;
7-4 Oracle C++ Call Interface Programmer’s Guide