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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.
AppendixesThis section contains additional reference information.
Test for an sbspaceIf your DataBlade® module contains data types that contain smart large object data (BLOB and CLOB data types), an sbspace to store the smart large object must exist for each database in which users register the DataBlade® module. If the required sbspace does not exist, registration fails.

Test for an sbspace

If your DataBlade® module contains data types that contain smart large object data (BLOB and CLOB data types), an sbspace to store the smart large object must exist for each database in which users register the DataBlade module. If the required sbspace does not exist, registration fails.

You can test for the existence of a particular sbspace when BladeManager prepares your DataBlade module for registration by using the following procedure. If you test for the sbspace and it does not exist, registration fails and BladeManager writes an error message to the registration log. If you do not test for the sbspace and it does not exist, registration fails with an obscure error message.

To implement a test for a particular sbspace, use BladeSmith to add a custom SQL statement to your DataBlade module that executes the SYSBldTstSBSpace() function. This is the syntax of the EXECUTE FUNCTION statement that executes SYSBldTstSBSpace():

EXECUTE FUNCTION SYSBldTstSBSpace("opt_name");

opt_name: The name of the required sbspace. To indicate the default sbspace, replace "opt_name" with " ".

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