No, the description of STAFResult says that if the STAF service request
executed by <stafcmd> returns a marshalled result, STAX automatically
unmarshalls it for you so that STAFResult will contain the root object of
the marshalled result. So, in this case, STAFResult contains a Python
List of the file names. Hence why you can use len(STAFResult) to get the
number of items in the list. You don't marshall or unmarshall anything.
The following example prints the result (the list of file names) and shows
an example of iterating through the list to access each file name
individually. It's really quite simple.
<script>dir = '%s\Silk\Apps\TestResults' % (tempfolder)</script>
<stafcmd name="'List all .txt files'">
<location>'local'</location>
<service>'FS'</service>
<request>'LIST DIRECTORY %s EXT txt TYPE F' % (dir)</request>
</stafcmd>
<if expr="RC == 0">
<sequence>
<log message="1">'Directory %s contains %s files with extension .txt'
% (dir, len(STAFResult))</log>
<log message="1">'Directory %s contains the following .txt files:\n%s'
% (dir, STAFResult)</log>
<!-- The following iterates through the list of file names -->
<iterate var="fileName" in="STAFResult">
<log message="1">fileName</log>
</iterate>
</sequence>
<else>
<log message="1">'FS LIST DIRECTORY failed with RC: %s, STAFResult:
%s' % (RC, STAFResult)</log>
</else>
</if>
--------------------------------------------------------------
Sharon Lucas
IBM Austin, luc...@us.ibm.com
(512) 286-7313 or Tieline 363-7313
From: Cindy Zhu <c...@fekete.com>
To: Sharon Lucas/Austin/IBM@IBMUS
Cc: "staf-users@lists.sourceforge.net"
<staf-users@lists.sourceforge.net>
Date: 04/19/2011 11:55 AM
Subject: RE: [staf-users] STAXResult
Right, your code gives me the number of the entries in the STAFResult. But
I also want to retrieve the list of the file names, which is a marshalled
STAFResult, I guess.
Thanks,
Cindy
From: Sharon Lucas [mailto:luc...@us.ibm.com]
Sent: April-19-11 10:50 AM
To: Cindy Zhu
Cc: staf-users@lists.sourceforge.net
Subject: RE: [staf-users] STAXResult
Why are you trying to marshall the STAFResult? I have do idea why you are
doing this. I gave you an example of how to get the number of entries in
the STAFResult (which it is a list).
<script>dir = '%s\Silk\Apps\TestResults' % (tempfolder)
<stafcmd name="'List all .txt files'">
<location>'local'</location>
<service>'FS'</services>
<request>'LIST DIRECTORY %s EXT txt TYPE F' % (dir)</request>
</stafcmd>
<if expr="RC == 0">
<log message="1">'Directory %s contains %s files with extension .txt' %
(dir, len(STAFResult)</log>
</if>
--------------------------------------------------------------
Sharon Lucas
IBM Austin, luc...@us.ibm.com
(512) 286-7313 or Tieline 363-7313
From: Cindy Zhu <c...@fekete.com>
To: Sharon Lucas/Austin/IBM@IBMUS
Cc: "staf-users@lists.sourceforge.net"
<staf-users@lists.sourceforge.net>
Date: 04/19/2011 11:45 AM
Subject: RE: [staf-users] STAXResult
Thank you very much. You mentioned this:
STAFResult - the result from the STAF command. It can be a string, or, if
the result is marshalled, it is the root object of the marshalled result
which could be a Python List or a Python Dictionary (aka Map).
No too much documentation mentioned how to marshall STAFResult. Is the
following code correct?
<stafcmd name="'Get result files ">
<location>'local'</location>
<service>'FS'</service>
<request>'LIST DIRECTORY "D:\Silk\Apps\Harmony\TestResults" EXT
txt'</request>
</stafcmd>
<if expr="RC==0">
<script>
from PySTAF import *
import re
result=STAFResult
len=[len(STAFResult))
mr=marshall(STAFResult)
...........
</script>
</if>
Do I need to "from PySTAF import *" to import the module to marshall
STAFResult? I also got "NameError: marshall" when I ran the code?
Can you please help?
Thanks,
Cindy
From: Sharon Lucas [mailto:luc...@us.ibm.com]
Sent: April-19-11 9:26 AM
To: Cindy Zhu
Cc: staf-users@lists.sourceforge.net
Subject: Re: [staf-users] STAXResult
The <stafcmd> element does not set a Python variable named STAXResult. The
section titled "stafcmd: Run a STAF Command" in the STAX User's Guide at
http://staf.sourceforge.net/current/STAX/staxug.html#Header_Stafcmd
describes the Python variables that are set by the <stafcmd> element. It
says:
After the STAF command has completed, the following variables are set and
can be referenced by the job:
RC - the return code from the STAF command. It is an integer.
STAFResult - the result from the STAF command. It can be a string, or, if
the result is marshalled, it is the root object of the marshalled result
which could be a Python List or a Python Dictionary (aka Map).
STAFResultContext - the STAF marshalling context object for the result
from the STAF command. It is an object of type org.python.core.PyInstance.
The STAFMarshallingContext class provides a container for map class
definitions and an object that uses (or is defined in terms of) them. Its
string representation is equivalent to the "verbose format" (the
hierarchical nested format) provided by the STAF executable.
STAFResultString - The result string from the STAF command. It is a
string. If the result is marshalled, it is the marshalled result string.
Note: This variable would only be used if you needed the actual result
string from a STAF command, such as if submitting a GET FILE request to
the FS service when the specified file contains marshalled data and you
want the actual contents of the file.
The FS service's LIST DIRECTORY request returns a list (as described in
sub-section "Results" in section "8.4.9 LIST DIRECTORY" in the STAF User's
Guide at http://staf.sourceforge.net/current/STAFUG.htm#HDRFSSRV). It
says the result of a FS LIST DIRECTORY request (if neither the LONG nor
the SUMMARY option is specified) "will contain a marshalled <List> of
<String> representing the names of the matching entries in the specified
directory".
So,, STAFResult will contain a Python List of strings containing the file
names. A Python List provides many functions such as the len() function
that you can use to get the number of items in the list.. e.g.
len(STAFResult) Iterating the list is not required. Note that you can
google for "Python List size" and find many hits for documentation such as
"An Introduction to Python Lists" at
http://effbot.org/zone/python-list.htm that describes the Python Lists and
talks about the len(List) function that returns the number of items in a
Python list.
<script>dir = '%s\Silk\Apps\TestResults' % (tempfolder)
<stafcmd name="'List all .txt files'">
<location>'local'</location>
<service>'FS'</services>
<request>'LIST DIRECTORY %s EXT txt TYPE F' % (dir)</request>
</stafcmd>
<if expr="RC == 0">
<log message="1">'Directory %s contains %s files with extension .txt' %
(dir, len(STAFResult)</log>
</if>
Note that the FS service's LIST DIRECTORY request provides a SUMMARY
option to provide only a summary of the selected contents of a directory,
including its total size in bytes, number of files, and number of
subdirectories. The previously mentioned section in the STAF User's Guide
says:
"If the SUMMARY option is specified, the result buffer will contain a
marshalled <Map:STAF/Service/FS/ListSummaryInfo> representing summarized
information about the matching entries in the directory including total
size, number of files, and number of subdirectories." It then defines the
map with the field names that are provided such as numFiles and
numDirectories..
So, as another option, if you didn't need a list of the file names that
met your list criteria, just the number of files, then you could use
<stafcmd> to submit request "LIST DIRECTORY dirName EXT TXT SUMMARY'
request as folllows:
<script>dir = '%s\Silk\Apps\TestResults' % (tempfolder)
<stafcmd name="'List all .txt files'">
<location>'local'</location>
<service>'FS'</services>
<request>'LIST DIRECTORY %s EXT txt SUMMARY' % (dir)</request>
</stafcmd>
<if expr="RC == 0">
<log message="1">'Directory %s contains %s files with extension .txt' %
(dir, STAFResult['numFiles'])</log>
</if>
I hope that helps you see how easy it is to do (and where to find
documentation).
--------------------------------------------------------------
Sharon Lucas
IBM Austin, luc...@us.ibm.com
(512) 286-7313 or Tieline 363-7313
From: Cindy Zhu <c...@fekete.com>
To: "staf-users@lists.sourceforge.net"
<staf-users@lists.sourceforge.net>
Date: 04/18/2011 04:53 PM
Subject: [staf-users] STAXResult
Hi,
I have the following STAX job to list .txt files in a folder:
<stafcmd name="'List all .txt files">
<location>'local'</location>
<service>'FS'</services>
<request>'LIST DIRECTORY
%s\Silk\Apps\TestResults EXT txt' % tempfolder</request>
</stafcmd>
Is there a function in STAXResult to return the how many files are listed
without iterate the STAX result? or where I can get the documentation
about the available functions for STAXResult
Thanks,
Cindy
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