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Writer
Semantics
The role type Writer corresponds to the requirement that the associated player in a FileIO connection be a writer in a compilation unit of a data block that gets appended to the end of a sequential file. The player type WriteFile in UniCon captures the semantics of this write action. The responsibility of the WriteFile player is to act as the writer of such a data block in a FileIO connection.
In a FileIO connection whose IOMode is either WriteOnly or ReadWrite, there must be at least one writer (i.e., one Writer role/player association) of sequential file data blocks, however, there may be infinitely many.
Connector Types In
A role of type Writer can legally be defined in a connector of the following type:
Player Type
Associations
A role of type Writer can legally be associated with the following player type in a FileIO connection:
Property Defaults
The following are the default values of the properties for the Reader role:
- General.WriteFile,
Module.WriteFile
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Author:
Gregory Zelesnik
Last Modified: May 12, 1996