UnicodeEncodingType < Main

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---+ Unicode Encoding Types

_Add new encoding types to alpha fields, RAW, NATIONAL, and UNICODE._

%TOC%
---++ Overview

Alpha fields will have three choices for Encoding.
   * RAW
   * NATIONAL
   * UNICODE

Field Type considered Alpha are:
   * ALPHA
   * DATE with ALPHA Storage Type
   * FORMAT
   * TEXT

*RAW Encoding:*
   * All existing alpha fields will have a default single-byte encoding type of RAW.
   * DD length is the number of 8-bit bytes that the field can store.
   * Internal format in the engine is 8-bit bytes.
   * May contain binary data.
   * May contain 8-bit characters (uses 8859-15 encoding when interpreted as character data).
   * Stored in APPXIO records as 8-bit bytes.
   * No transcoding is performed when reading/writing a RAW field in APPXIO.

*UNICODE Encoding:*
   * DD length is the number of 4-byte UTF-32 characters that the field can store.
   * Internal format in the engine is UTF-32 (4 bytes per character).
   * Used to store Unicode characters in a UTF-32 encoding.
   * Stored in APPXIO as 4-byte UTF-32 characters.
   * No transcoding is performed when reading/writing a UNICODE field in APPXIO.

*NATIONAL Encoding:*
   * DD length is the number of 8-bit characters that the field can store.
   * Internal format in the engine is UTF-32 (4 bytes per character).
   * Used to store Unicode characters using a specified 8-bit encoding method.
   * The encoding method is specified in System Admin (SYSPARM, SYSDFLT, and SYSDIR).
   * Stored in APPXIO records as 1-byte characters.
   * Transcoding of characters is performed to/from the internal UTF-32 format when reading/writing to disk.

*APPX Data Dictionary Considerations:*
   * The field length represents the number of characters that can be stored in the alpha field.
---++ Test Plan:
---+++ APPX Data Dictionary Considerations: (untested)

*Test Requirements:*

Does the DD allow encoding type for all alpha field types to be specified?

Does the DD compiler support 1-byte or 4-byte characters in alpha fields?

*Test Results and Notes:*

untested

-- Main.PeteBrower - 2011-03-04
Topic revision: r4 - 2011-03-09 - PeteBrower