Home
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® Developers KitThe DataBlade® Developers Kit (DBDK) guides contain information about the tools you can use to develop and package DataBlade® modules, which extend the functionality of HCL OneDB™ databases.
DataBlade® Developers Kit User's GuideThe HCL OneDB™ DataBlade® Developers Kit Users Guide describes how to use OneDB® DataBlade® Developers Kit (DBDK) tools to develop and package DataBlade® modules.
Programming guidelinesUse this section to help you when you write the design specification for your DataBlade® module.
Programming language optionsThis section explains the programming language options you have when you use BladeSmith to generate source code for your DataBlade® module.
Options for routinesIf you choose to program your user-defined routines in C, you can choose any of the routine options available in BladeSmith.
Overload routines in different languagesYou can overload routines to handle different data types in either C or Java™. You cannot, however, overload a routine in a different language with the same data type.

Overload routines in different languages

You can overload routines to handle different data types in either C or Java™. You cannot, however, overload a routine in a different language with the same data type.

For example, you can create the following two functions:

MyFunction(lvarchar) written in C
MyFunction(int) written in Java

However, you cannot create the following two functions:

MyFunction(lvarchar) written in C
MyFunction(lvarchar) written in Java