Xerox Paris, a document system Support & Software Betriebsanweisung
Chapter 2
62
The Paris Spooler Technical Manual
Changing File Attributes
The file attributes are changed to hidden, or the file name is changed or the file
extension is changed to prevent the Spooler constantly going back in a loop and
re-processing the same input file.
extension is changed to prevent the Spooler constantly going back in a loop and
re-processing the same input file.
The side effect of changing the attributes to hidden is that the files appear to have
been immediately deleted from the system. In fact they are still there, they are
simply waiting to be processed by Paris. Only after processing are the files deleted.
been immediately deleted from the system. In fact they are still there, they are
simply waiting to be processed by Paris. Only after processing are the files deleted.
An example of the Spooler polling directories for input data
Once a job definition has been created with a directory search path, (for
example, E:\INV\DTA\T*.DTA), the Spooler immediately checks the contents
of this directory to find any files that match the search criteria.
example, E:\INV\DTA\T*.DTA), the Spooler immediately checks the contents
of this directory to find any files that match the search criteria.
Each time a file is found that matches the criteria, the Spooler creates an SJR,
then it changes the attributes of the file to ‘hidden’.
then it changes the attributes of the file to ‘hidden’.
In this example, the Spooler would search the E:\INV\DTA directory and
immediately generate Spooler Job Requests for all files matching the search
mask, in this case T*.DTA (that is, all filenames starting with ‘T’ and with the
extension .DTA). The attributes for all these matching files would also
immediately be changed to ‘Hidden’, which means the files have in theory
disappeared from the directory.
immediately generate Spooler Job Requests for all files matching the search
mask, in this case T*.DTA (that is, all filenames starting with ‘T’ and with the
extension .DTA). The attributes for all these matching files would also
immediately be changed to ‘Hidden’, which means the files have in theory
disappeared from the directory.
If there were 20 files in the directory matching the T* and .DTA mask, the
Spooler display would immediately show 20 jobs queued ready for processing.
Spooler display would immediately show 20 jobs queued ready for processing.