Mapping String Data

The purpose of the NONE map on the Server canvas is to turn off mapping of string data in any stage in which the map is set, that is, to pass the data through verbatim. This feature is handled differently on the parallel canvas. When you define string data (for example, char, varchar), there is an additional field in the stage's Columns grid called Extended. This can be set to blank or Unicode. If this option is set to blank, no mapping occurs (for example, "NONE"); the map specified on the NLS tab is ignored. If this option is set to Unicode, the NLS map is applied. In order to read or write Japanese data, for example, set Extended to Unicode. When the job compiler detects this combination (char, varchar, and Unicode), it generates the appropriate runtime code.