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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.
User-Defined Routines and Data Types Developer's GuideThe HCL OneDB™ User-Defined Routines and Data Types Developer's Guide describes how to define new data types and enable user-defined routines (UDRs) to extend HCL OneDB™.
Write support functions
Handle locale-sensitive data (GLS)
Locale-sensitive input and output support functions

Locale-sensitive input and output support functions

The LVARCHAR (and mi_lvarchar) data type can hold data in the code set of the client or database locale. This data includes single-byte (ASCII and non-ASCII) and multibyte character data. The LVARCHAR data type holds opaque-type data as it is transferred to and from the database server in its external representation. Therefore, the external representation of an opaque data type can hold single-byte or multibyte data.

However, you must write the input and output support functions to interpret the LVARCHAR data in the correct locale. These support functions might need to perform code-set conversion if the client locale and database locale support different code sets. For more information about code-set conversion, see the HCL OneDB™ GLS User's Guide.

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