I want to know the OCIStmt struct

Question

==ociap.h ==

sword   OCIStmtPrepare   (OCIStmt *stmtp, OCIError *errhp, const OraText *stmt,
                          ub4 stmt_len, ub4 language, ub4 mode);

Could you tell the OCIStmt struct definition of the above parameters? Information that can not be disclosed?

Thanks.

Why do you need that? You should never manipulate those directly, always go through the OCI functions. — Mat, Jun 01 '18 at 11:16

score 1 · Answer 1 · answered Jun 01 '18 at 16:37

Given that the function declaration you show only accepts pointers to the structures, they are likely opaque types (https://en.wikipedia.org/wiki/Opaque_data_type). That is, the way the structure is defined is an implementation detail that may change from version to version or across different systems.

It would make sense to not worry about HOW it's implemented so much as understanding WHAT the functions provided do. Remember, since the OCI functions accept pointers, they may be able to change the data contained in the structure.

A similar example of this is the FILE type in C (see What exactly is the FILE keyword in C?).

I want to know the OCIStmt struct

1 Answers1