10. MODIFICATION › 10.2 Standard User Exits

10.2 Standard User Exits

Two types of user exits can be used to modify CA MICS logic:
the general exits, which apply to all the installed products,
and the product exits, which apply only to the product for
which they are provided.

The general exits are briefly described in this guide.  They
are described in more detail in Section 4.3, User Exit
Facilities, in the CA MICS System Modification Guide.

The product exits are classified according to their purpose
and include product input, output, parameter-related, and
accounting exits.

Input exits are invoked as the raw input records are read.
Output exits are invoked just before CA MICS writes an
observation to the database.

The IMS Analyzer provides the input exit,     _USRSEL.  This
exit can be used to select or exclude input data that meets
special installation-defined criteria, to add data elements,
or to modify record fields as they are read.

One output exit routine is provided for each product file.
This output exit routine may be used to selectively block the
writing of specified records, alter data elements in the
records, or produce additional records for the target file or
a user-defined file.

The product parameter-related exits are also user exits, but
they are defined as part of the standard CA MICS installation
process.  They are normally associated with other parameters
or options.

The user exits for the IMS Analyzer are identified below and
discussed in the sections noted:

    1 - General Exits
    2 - Input Exits
    3 - Parameter-Related Exits
    4 - Output Exits