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Extending HCL OneDB™Beyond standard relational database objects, HCL OneDB™ can be extended to handle specialized data types, access methods, routines, and other objects. HCL OneDB™ includes many built-in extensions that are fully integrated in the database server. HCL OneDB™ also provides DataBlade® modules, which are packages of extended database objects for a particular purpose and that are installed separately from the database server. Alternatively, you can create your own user-defined objects for HCL OneDB™.
Creating extensionsYou can create user-defined data types, routines, access methods, and other database objects to suit your needs. You can use application programming interfaces to write user-defined routines and applications that access data in HCL OneDB™ databases.
DataBlade® API Function ReferenceThe HCL OneDB™ DataBlade® API Function Reference describes the DataBlade® API functions and the subset of functions that the DataBlade® API supports.
Function descriptionsThis section gives comprehensive reference information about the functions that are valid within DataBlade® API modules. It lists the function descriptions in alphabetical order, with syntax, usage information, and return values for the functions.
The mi_lo_specget_def_open_flags() functionThe mi_lo_specget_def_open_flags() function obtains from an LO-specification structure the default open-mode flag for a smart large object.

The mi_lo_specget_def_open_flags() function

The mi_lo_specget_def_open_flags() function obtains from an LO-specification structure the default open-mode flag for a smart large object.

Syntax

mi_integer mi_lo_specget_def_open(LO_spec)
   MI_LO_SPEC *LO_spec;

LO_spec: A pointer to the LO-specification structure from which to obtain the default open flags.


Valid in client LIBMI application?	Valid in user-defined routine?
Yes	Yes

Usage

The mi_lo_specget_def_open_flags() function obtains the current value for the default open-mode flag from the LO-specification structure that LO_spec references. This default open-mode flag is the bit mask that indicates which open mode the mi_lo_open() function uses when it opens the smart large object but does not specify an open-mode flag. To override the default open-mode flag, you can specify an open mode as an argument to mi_lo_open().

Important: Before you call mi_lo_specget_def_open_flags(), you must put storage characteristics into an LO-specification structure.

You can use any of the following functions to initialize the LO-specification structure:

The mi_lo_colinfo_by_ids() or mi_lo_colinfo_by_name() function puts storage characteristics that are associated with a particular CLOB or BLOB column in an LO-specification structure.
The mi_lo_stat_cspec() function puts storage characteristics of an existing smart large object in an LO-specification.
The mi_lo_specget_def_open_flags() function sets the default open flags in an LO-specification structure.

For more information about the default open mode of a smart large object or about how to use the mi_lo_specget_def_open_flags() function, see the HCL OneDB™ DataBlade® API Programmer's Guide.

Return values

MI_OK: The bit-mask value of the default open flags for the smart large object that LO_spec references.
MI_ERROR: The function was not successful.

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