Re: A basic file update program

Dan, you can use the toolbox file I/O classes such as KeyedFile and
SequentialFile and use code like the code from one of the previous replies.
It's rather involved, and requires the use of many classes, some of which
aren't particularly intuitive (such as QSYSObjectPathName).

Alternatively, you can download the latest version of PBD from
http://www.zappie.net/revitalization (follow the links to Alpha 2
download), and use the JDB400 package.  It supports writing code similar to
RPG syntax.  For example, to change the credit hold flag to blank for all
orders for customer number "ABC0012", do the following:


     // Define key
     String custKey = "ABC0012";

     // Open file
     JDB400File orderFile = new JDB400KeyedFile("MYLIB/ORDHDRL1");

     // Read records
     orderFile.SETLL(custKey);
     while (orderFile.READE(custKey))
     {
          // Set field to blank and update
          orderFile.setField("CRHOLD", " ");
          orderFile.UPDAT();
     }

That's it.  And while that's a lot easier to use, more importantly I give
you all the source so that you can learn from it and even modify it for
your own particular purposes.

Joe Pluta
www.java400.net


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