Modifying Device Designs › Editing Device Designs › Selector Role

Selector Role

For fields that are selectors on the control formats of DSPFIL and SELRCD functions, you can specify the nature of the selection in terms of a relation operator. This can be one of the following:

• Relational Operator (EG, NE, LT, LE, GE, GT)—Selects records with field values that satisfy a test specified by the operator and the selector field value.

  For example: GT 10, EQ IBM, LT 100

• Start Operator (ST)—Selects records with field values that start with the specified value (character fields only).

  For example: A selector field value of TXT would select TXTDTA and TXTSRC but not QTXTSRC.

• Contains Operator (CT)—Selects records with field values that contain the specified value for the field (character fields only).

  For example: A selector field value of TXT would select QTXTSRC, FREDTXT, and TXTDTA.

If a value is entered for the selector field, selection is only applied at execution time. If a value is entered in more than one selector field, the selection criteria are logically ANDed together.

For example, on the following DSPFIL function example, three different types of selector role are specified.