Home
Reference Guide
This guide describes conceptual information about data design environment components when you want to use the data fabrication feature in HCL OneTest™ Server.
Schema design
A schema is a graphical data dictionary that contains metadata definitions of the structure of a document to generate test data. Schema provides visual cues for understanding the structure and complete definition of an object.
Functions and expressions
Custom functions

Reference Guide
This guide describes conceptual information about data design environment components when you want to use the data fabrication feature in HCL OneTest™ Server.
- Files
  You add a file to a project to use it as input in the project. You can upload a file from your local file system to a project from the Files tab to generate test data. Alternatively, you can upload it when you define an action.
- Connections
  A connection defines the properties that are required to connect to an external resource. An action uses a connection to provide source data to a project or write data from a source to a target. Multiple actions can use the same connection. You can define both connections and actions at the project level.
- Schema design
  A schema is a graphical data dictionary that contains metadata definitions of the structure of a document to generate test data. Schema provides visual cues for understanding the structure and complete definition of an object.
  - Introduction to schema design
    Use the Schemas tab to define, modify, and view schemas. A schema describes the syntax, structure, and semantics of your data.
  - Type properties
    The properties of a type define the characteristics of the data objects of that type.
  - Item restrictions
    Item restrictions are an optional feature you can use to specify valid or invalid data objects for an item type. Item restrictions are grouped into three categories: Value, Character, and Range.
  - Components
  - Partitioning
  - Type inheritance
  - Schema analyzer
  - Distinguishable objects
  - Functions and expressions
    - Expressions and evaluations
    - Using functions
    - Syntax of a function
    - Function argument syntax
    - Functions that convert character-set encoding to the native code page
    - General functions
    - Bidirectional functions
    - Bit manipulation and testing functions
    - Conversion functions
    - Date/time functions
    - Error handling functions
    - External interface functions
    - Inspection functions
    - Logical functions
    - Lookup and reference functions
    - Math and statistics functions
    - Text functions
    - XML functions
    - Custom functions
      - Creating a custom function
        To create your own functions, a C or C++ development tool is required, or the Java Native Interface (JNI) if you are working in a Java environment.
    - Date and time format strings
    - Number format strings
    - RUN function return codes
    - Character set codes for CPACKAGE, CSERIESTOTEXT, and CTEXT

Custom functions

From the Type Designer or Map Designer, you can create custom functions to call external libraries. While the EXIT function is often used to call external libraries, the EXIT function is limited to support only text objects and is operating system dependent. When you create a custom function to use in a map rule, the function is operating system independent and supports text, number, and date-time objects.

Similar to the regular functions that are shipped with the product, a maximum of four parameters are supported per argument.