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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™.
Improve UDR performance
Parallel UDRs
Executing UDRs in parallel
Implicit execution of an assign UDR

Implicit execution of an assign UDR

When you create opaque data types, you create the support function assign() to insert, update, or load the UDT data in the table.

The following sample SQL statement inserts data in a UDT column:

INSERT INTO tab (udtcol) SELECT udtcol FROM t1;

If the table tab has multiple fragments and the udtcol data type has an assign() function, each insert thread that inserts a fragment of table tab executes the assign() UDR in parallel.

The support function destroy() for a UDT does not execute in parallel because the destroy() UDR is called during a DELETE statement that is not executed in parallel.