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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® 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 DataBlade® modules in Java™This section contains information to help you edit and compile Java™ language source code generated by BladeSmith.
Source files generated by BladeSmithWhen you create objects, BladeSmith generates the source files; some file names are prefixed with the name of the DataBlade® module (indicated by project). By default, BladeSmith creates the source files in the src and src\java subdirectories of the directory that contains the BladeSmith project file.
The SQLData interface method support codeIf you define a user-defined routine, aggregate, or cast support method that handles an opaque data type implemented in C or C++, BladeSmith generates the SQLData interface methods readSQL() and writeSQL() to translate objects from and to their internal server representation.

The SQLData interface method support code

If you define a user-defined routine, aggregate, or cast support method that handles an opaque data type implemented in C or C++, BladeSmith generates the SQLData interface methods readSQL() and writeSQL() to translate objects from and to their internal server representation.

BladeSmith generates complete code for these methods in a file named Opaque.java, where Opaque is the name of the C or C++ opaque data type. Do not modify these methods.