Function dpiObject_getAttributeValue 

pub unsafe extern "C" fn dpiObject_getAttributeValue(
    obj: *mut dpiObject,
    attr: *mut dpiObjectAttr,
    nativeTypeNum: dpiNativeTypeNum,
    value: *mut dpiData,
) -> c_int

Returns the value of one of the object’s attributes.

The function returns DPI_SUCCESS for success and DPI_FAILURE for failure.