Preface

This manual explains how to code CQL for use in analyzing data with uCosminexus Stream Data Platform - Application Framework, and how to create custom adaptors.

It is intended to give you the ability to write CQL code for achieving analysis objectives and the ability to use APIs to create custom adaptors.

Intended readers

This manual is intended for programmers who use CQL to define queries, and who create application programs for use as adaptors.

Readers of this manual must have:

This manual also assumes that the reader is familiar with the manual uCosminexus Stream Data Platform - Application Framework Description, so we recommend that you first read this manual.

Conventions: Diagrams

This manual uses the following conventions in diagrams:

[Figure]

Conventions: Fonts and symbols

The following table explains the fonts used in this manual:

FontConvention
BoldBold type indicates text on a window, other than the window title. Such text includes menus, menu options, buttons, radio box options, or explanatory labels. For example:
  • From the File menu, choose Open.
  • Click the Cancel button.
  • In the Enter name entry box, type your name.
ItalicsItalics are used to indicate a placeholder for some actual text to be provided by the user or system. For example:
  • Write the command as follows:
    copy source-file target-file
  • The following message appears:
    A file was not found. (file = file-name)
Italics are also used for emphasis. For example:
  • Do not delete the configuration file.
Code fontA code font indicates text that the user enters without change, or text (such as messages) output by the system. For example:
  • At the prompt, enter dir.
  • Use the send command to send mail.
  • The following message is displayed:
    The password is incorrect.

Conventions: Version numbers

The version numbers of Hitachi program products are usually written as two sets of two digits each, separated by a hyphen. For example:

The version number might be shown on the spine of a manual as Ver. 2.00, but the same version number would be written in the program as 02-00.