Hi Chris, StringTokenizer will simply eliminate all the 'No space'. I tried, it does not work.
--Madhu ________________________________________ From: Corinna Gries [[email protected]] Sent: Thursday, June 10, 2010 1:25 PM To: Christopher Brooks Cc: Madhusudan Gujral; Kepler User Subject: Re: [kepler-users] string splitter Hi Christopher, thanks for clarifying. Corinna Christopher Brooks wrote: > Hi Corinna, > This seems like a design problem in the underlying Java library: > > kepler/actors/src/org/resurgence/actor/StringSplitter.java > uses java.util.String.split() > > http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html#split%28java.lang.String%29 > > says >> This method works as if by invoking the two-argument split method >> with the given expression > > and a limit argument of zero. Trailing empty strings are therefore > not included in the resulting array. >> >> The string "boo:and:foo", for example, yields the following results >> with these expressions: >> >> Regex Result >> : { "boo", "and", "foo" } >> o { "b", "", ":and:f" } > > I added a comment to StringSplitter about this limitation. > > Probably what we need in this case is a StringTokenizer actor. > > _Christopher > > > On 6/10/10 12:20 PM, Corinna Gries wrote: >> Hi Madhu, >> >> when I run the attached workflow the output is this: >> >> {"6/19/2009", "CEW", "", "6/10/2009", "6", "1", "1000", "52.5", "31", >> "1", "1", "1.017410714", "0.625589286", "1.3125"} >> >> and it is missing the empty string in position 14. I think you may have >> had a space after the last comma, which made it work just fine. >> >> Corinna >> >> Madhusudan Gujral wrote: >>> Hi Corinna, >>> >>> I passed the splitter results to dsplay actor. What I observe if >>> following >>> {"6/19/2009", "CEW", "", "6/10/2009", "6", "1", "1000", "52.5", "31", >>> "1", "1", "1.017410714", "0.625589286", "1.3125", "", " "} >>> >>> It has elements 14 'No Space' and 15 'Space' displayed correctly. When >>> I used Array Element actor to display the values for element 14, 15, >>> it does not complain, but there is nothing to show. >>> My guess is that the problem is related to post processing (processing >>> the empty tokens). >>> >>> Thanks >>> --Madhu >>> >>> ________________________________________ >>> From: kepler-users-bounces at kepler-project.org >>> [kepler-users-bounces at kepler-project.org] On Behalf Of Corinna Gries >>> [cgries at wisc.edu] >>> Sent: Thursday, June 10, 2010 11:31 AM >>> To: Kepler User >>> Subject: [kepler-users] string splitter >>> >>> Hi again, >>> >>> when I am running this line of data: >>> 6/19/2009,CEW,,6/10/2009,6,1,1000,52.5,31,1,1,1.017410714,0.625589286,1.3125,, >>> >>> >>> >>> through the string splitter, splitting it on ',' it omits the last >>> empty >>> string, i.e. does not pass an empty string. Trying to read the array >>> element in position 14 throws an error rather than returning an empty >>> string, which is what I had expected. >>> >>> I can work around it by just adding something to end of the line but is >>> that an otherwise meaningful behavior? >>> >>> Corinna >>> _______________________________________________ >>> Kepler-users mailing list >>> Kepler-users at kepler-project.org >>> http://mercury.nceas.ucsb.edu/kepler/mailman/listinfo/kepler-users >> >> >> _______________________________________________ >> Kepler-users mailing list >> Kepler-users at kepler-project.org >> http://mercury.nceas.ucsb.edu/kepler/mailman/listinfo/kepler-users >
