OPEN Statement

Syntax:

OPEN { {OUTPUT} { file [ {WITH} {MASS-UPDATE  } ] } ... } ...
       {I-O   }          {FOR } {BULK-ADDITION}
       {EXTEND}

Syntax Rules:

1. The MASS-UPDATE and BULK-ADDITION phrases may be specified only for indexed files, and may not be specified along with the INPUT phrase.
2. You must compile with the DIALECT"ACU" Compiler directive.

General Rules:

1. The WITH MASS-UPDATE phrase is equivalent to the WITH LOCK phrase with some additional effects. It may be specified only for indexed files. This phrase indicates to the runtime system that the file in question will be heavily updated by this program. The runtime system may be able to use this information to access the file more efficiently.
2. The BULK-ADDITION phrase is equivalent to the MASS-UPDATE phrase with some additional effects. For Vision files, the BULK-ADDITION phrase opens the file in "bulk addition" mode, which substantially increases efficiency when you are writing a large number of new records to the file. BULK-ADDITION has several significant effects, including some changes to standard COBOL file handling rules. See section 6.1.6.3 of ACUCOBOL-GT User's Guide for details. For host file systems other than Vision, specifying BULK-ADDITION has the same effect as specifying MASS-UPDATE. In this case, none of the special handling dictated by BULK-ADDITION applies.