federico franceschetti created NET-706:
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Summary: FTPClient does not list GDG files on Z/OS system
Key: NET-706
URL: https://issues.apache.org/jira/browse/NET-706
Project: Commons Net
Issue Type: Bug
Components: FTP
Affects Versions: 3.8.0, 3.7, 3.6
Reporter: federico franceschetti
In z/OS®, it is possible to catalog successive updates or generations of
related data, which are called generation data groups (*GDG*s).
A generation data group (GDG) is a collection of historically related data sets
that are arranged in chronological order. That is, each data set is
historically related to the others in the group.
Generation data sets have sequentially ordered absolute and relative names that
represent their age. The operating system's catalog management routines use the
absolute generation name. Older data sets have smaller absolute numbers. The
relative name is a signed integer used to refer to the latest (0), the next to
the latest (-1), and so forth, generation.
In my test scenario, in the Z/OS System there are three GDG data sets with
following root: TWS95.EBIZ2.UAT.FGI231.XML.DOCFL1
data sets:
TWS95.EBIZ2.UAT.FGI231.XML.DOCFL1.G0001V00
TWS95.EBIZ2.UAT.FGI231.XML.DOCFL1.G0002V00
TWS95.EBIZ2.UAT.FGI231.XML.DOCFL1.G0003V00
If I try to get the file with FTPClient methods, as following:
FTPClient f=FTPClient();
f.connect(server);
f.login(username, password);
FTPListParseEngine engine =
f.initiateListParsing("{*}'TWS95.EBIZ2.UAT.FGI231.XML.DOCFL1.G0001V00'{*}");
while (engine.hasNext()) {
FTPFile[] files = engine.getNext(1);
}
the 'engine.hasNext()' condition is true and the 'get' action performed works
fine.
Using instead the index notation to reference the file, as shown below:
FTPClient f=FTPClient();
f.connect(server);
f.login(username, password);
FTPListParseEngine engine =
f.initiateListParsing("{*}'TWS95.EBIZ2.UAT.FGI231.XML.DOCFL1(0)'{*}");
while (engine.hasNext()) {
FTPFile[] files = engine.getNext(1);
}
the 'engine.hasNext()' condition is false and it means that an empty object
return from initiateListParsing method.
Question is: does FTPClient support the index notation to manage GDG data sets?
If yes, what's wrong in my code?
Thanks and regards
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