Hi All,
Yes, I want to sort the map by order of insertion. Thank for all the
suggestions.
I know what I need to do now.
Cindy
From: Sharon Lucas [mailto:luc...@us.ibm.com]
Sent: October-26-11 11:37 AM
To: Joseph J Veilleux
Cc: Cindy Zhu; staf-users@lists.sourceforge.net
Subject: Re: [staf-users] Iterating a dictionary in a STAX job
Right, I should have shown it as follows:
<script>testsWin = {'Harmony':0,'DeclinePlus':0, 'Harmony1':0,
'RTA':0}</script>
<iterate var="test" in="sorted(testsWin.iterkeys())">
<log message="1">'test=%s' % test</log>
</iterate>
But, I don't think that Cindy wanted to sort the Map by key. She wanted to
sort the map by order of insertion.
--------------------------------------------------------------
Sharon Lucas
IBM Austin, luc...@us.ibm.com
(512) 286-7313 or Tieline 363-7313
From: Joseph J Veilleux/Lexington/IBM
To: Sharon Lucas/Austin/IBM@IBMUS,
Cc: Cindy Zhu <c...@fekete.com>, "staf-users@lists.sourceforge.net"
<staf-users@lists.sourceforge.net>
Date: 10/26/2011 12:11 PM
Subject: Re: [staf-users] Iterating a dictionary in a STAX job
________________________________
Sharon, the List.sort() method in Python sorts a list in-place (i.e. it
operates on the list itself; it does not yield a sorted list as output), so I
doubt that the suggestion in your second paragraph would work, at least not in
the specific way you have shown it.
---------------------------------------------------------------------------------------
Joe Veilleux
IBM/Lotus Domino Server Quality Engineering
550 King Street
Littleton MA 01460
Email: joeveill...@us.ibm.com
Sharon Lucas/Austin/IBM@IBMUS
10/25/2011 04:54 PM
To
Cindy Zhu <c...@fekete.com>
cc
"staf-users@lists.sourceforge.net" <staf-users@lists.sourceforge.net>
Subject
Re: [staf-users] Iterating a dictionary in a STAX job
A dictionary (dict) in Python does not preserve order. Instead of order, a
dictionary uses a hashing algorithm to identify each item's place in the
dictionary for fast lookup. For more information, google for information about
Python dictionaries, for example, see
http://homepage.mac.com/s_lott/books/python/html/p02/p02c05_maps.html.
You could sort the keys (e.g. testsWin.keys().sort(), but that will sort the
keys in alphabetical order, not the order in which you defined them.
Instead, you could use a list as it preserves order (if you didn't really need
a dictionary). For example, a list of strings, or a list of dictionaries, or
what ever you needed. If you really need to use a dictionary, you could do
something like described at
http://stackoverflow.com/questions/60848/how-do-you-retrieve-items-from-a-dictionary-in-the-order-that-theyre-inserted.
Here's an example that uses a list of strings:
<script>
testsWin = [ 'Harmony', 'DeclinePlus', 'Harmony1', 'RTA' ]
</script>
<iterate var="test" in="testsWin">
<log message="1">'test=%s' % test</log>
</iterate>
STAX Job's Message/Log Output:
---------------------------------------------------
20111025-15:36:47
Info
test=Harmony
20111025-15:36:47
Info
test=DeclinePlus
20111025-15:36:47
Info
test=Harmony1
20111025-15:36:47
Info
test=RTA
Or you could use a list of dictionaries if you needed to store more information
about each item in the list. For example:
<script>
testsWin = [ {'name':'Harmony', 'count':0},
{'name':'DeclinePlus', 'count':0},
{'name':'Harmony1', 'count':0},
{'name':'RTA', 'count':0}
]
</script>
<iterate var="test" in="testsWin">
<log message="1">'testName=%s, testCount=%s' % (test['name'],
test['count'])</log>
</iterate>
STAX Job's Message/Log Output:
---------------------------------------------------
20111025-15:36:47
Info
testName=Harmony, testCount=0
20111025-15:36:47
Info
testName=DeclinePlus, testCount=0
20111025-15:36:47
Info
testName=Harmony1, testCount=0
20111025-15:36:47
Info
testName=RTA, testCount=0
Note that in Python 2.7, an OrderedDict API was added that provides the same
interface as regular dictionaries but iterates over keys and values in a
guaranteed order depending on when a key was first inserted. However, STAX
V3.5.0 and later uses Jython 2.5.2 which is the latest Jython version available
and is based on Python 2.5 so it doesn't support the OrderedDict API. Jython
development lags behind Python.
--------------------------------------------------------------
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: 10/25/2011 03:05 PM
Subject: [staf-users] Iterating a dictionary in a STAX job
________________________________
Hi,
I have the following STAX job to iterate a dictionary and print out the keys in
the dictionary.
<script>
testsWin = {'Harmony':0,'DeclinePlus':0, 'Harmony1':0, 'RTA':0}
</script>
<defaultcall function="main" />
<function name="main" scope="local">
<sequence>
<iterate var="test" in="testsWin.keys()">
<log message="1">'test=%s' % test</log>
</iterate>
</sequence>
</function>
The log message shows in this order: Harmony1, DeclinePlus, RTA, Harmony.
Is there a way to make the print out(message) has the same key order as that in
variable testsWin?
Thanks,
Cindy
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