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There are two broad categories of conversions in PMDF, controlled by two corresponding mapping tables and the PMDF conversions file. 1
The first category is that of character set, formatting, and labelling
conversions performed internally by PMDF. The application of such
conversions is controlled by the CHARSET-CONVERSION
mapping table. The CHARSET-CONVERSION mapping table is
discussed in Section 6.1.
The second category is that of conversions of message attachments using
external, third-party programs and site-supplied procedures, such as
document convertors. The application of such conversions is controlled
by the CONVERSIONS mapping table, and messages requiring
such conversions are thereby routed through the PMDF
conversion channel; the conversion channel
executes the site-specified external conversion procedure. The
conversion channel and its execution of external
conversion procedures are discussed in Section 6.2.
The PMDF conversions file, discussed in Section 6.2.3, is used to specify the details of external CONVERSIONS table triggered conversions and to specify the details of some internal CHARSET-CONVERSION table triggered conversions.
If you have both a CONVERSIONS mapping table and a CHARSET-CONVERSION mapping table, the CONVERSIONS mapping table takes precedence. In this case, all entries with RELABEL=1 in the conversions file
are skipped. A conversions file entry can be changed from being
associated with the CHARSET-CONVERSION mapping table to being
associated with the CONVERSIONS mapping table by replacing the
RELABEL=1 parameter with the COMMAND
parameter. The command specified could be as simple as copying the
input file to the output file.
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1 For a general overview of the PMDF mappings file and mapping table format, see Chapter 5. |
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