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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.
J/Foundation Developer's GuideThe HCL® J/Foundation Developer's Guide describes how to write user-defined routines (UDRs) in the Java™ programming language for HCL OneDB™.
ConceptsThis section introduces the infrastructure for creating and executing user-defined routines (UDRs) and applications that you write in Java™ to run in the HCL OneDB™ database server.
Features of Java™ user-defined routines

Features of Java user-defined routines

The HCL OneDB™ database server provides the infrastructure to support Java™ UDRs. The database server binds SQL UDR signatures to Java executable routines and provides mapping between SQL data values and Java objects so that the database server can pass parameters and retrieve returned results.

The HCL OneDB database server also provides support for data type extensibility and sophisticated error handling.

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