I don't think you're accounting for leading and trailing whitespace. A field like:
; GasTurbine2103/01 ; Will produce a string like: " GasTurbine2103/01 " The only field that doesn't have leading and trailing whitespace is the timestamp, which works correctly. There's a standard Clojure function, clojure.string/trim, that will trim whitespace from a string. All we have to do it apply it in Cascalog: (?<- (stdout) [?timestamp ?assembly ?category] (info-tap :> ?timestamp ?assembly ?category) (clojure.string/trim ?category :> ?trimmed-category) (= ?trimmed-category "Warning")) See if that works. - James On 28 November 2013 20:36, sindhu hosamane <sindh...@gmail.com> wrote: > Hi James , > > Thanks a lot for ur excellent reply . It really made me things clearer. > But still one small problem . > > Below is my code : > > (ns sixthclojureproject.fourthcore > > (:use [cascalog.api] > > [cascalog.more-taps :only (hfs-delimited)]) > > (:gen-class)) > > > (def info > > (hfs-delimited > > "/Users/Harshabirur/Desktop/Screenshots/messages_new.txt" > > :delimiter ";" > > :outfields ["?timestamp" "?assembly" "?category" "?eventtext" > "?downtime" "?tag" "?process" "?state"] > > :skip-header? false)) > > > > (def info-tap > > (<- [?timestamp ?assembly ?category ] > > ((select-fields info ["?timestamp" "?assembly" "?category"])?timestamp > ?assembly ?category > ))) > > > > (?<- (stdout) > > [?timestamp ?assembly ?category ] > > (info-tap :> ?timestamp ?assembly ?category ) > > (= ?timestamp "12.05.2010 06:03:15")) > > > It produces the correct output like > > > RESULTS > > ----------------------- > > 12.05.2010 06:03:15 GasTurbine2103/01 Start Inhibit > > > But when i have my predicate like (= ?category "Warning") > > Also does not work for (= ?assembly "GasTurbine2103/01") > > > RESULTS > > ----------------------- > > ----------------------- > > I get empty result. But some results are expected , because ?category > field has some "Warning". > > But it seems like only ?timestamp field is processed in = predicate , but > not other fields like ?category ?assembly or other . > > > Just Wondering about the strange behaviour of my code . or where is it > wrong? > > > My data looks like > > > timestamp; assembly ; category ; eventtext ; downtime ; tag ; > process ; state > > 12.05.2010 00:38:29; GasTurbine2103/01 ; Warning ; LUB OIL SUPPLY > TEMPERATURE HIGH [TC61] ;03:37:43; wng 27083 ;FALSCH; FOHs > > 12.05.2010 02:48:18; GasTurbine2103/01 ; Status ; INSTRUMENT AIR ASSIST > PURGE IN PROGRESS ;03:37:46; sts 71000 ;FALSCH; FOHs > > 12.05.2010 02:48:18; GasTurbine2103/01 ; Status ;LIQUID BURNER FORWARD > AIR PURGE IN PROGRESS ;03:37:49; sts 72000 ;FALSCH; FOHs > > 12.05.2010 02:52:19; GasTurbine2103/01 ; Start Inhibit ; Emergency > Stop Loop Test In Progress ;; sti 6032 ;FALSCH; FOHs > > 12.05.2010 02:52:23; GasTurbine2103/01 ; Start Inhibit ; Emergency > Stop Loop Test In Progress ;; sti 6032 ;FALSCH; FOHs > > > (Attached is my datasource for reference ) > sorry for my long post . Please help me to find where is it going wrong . > > -Sindhu > >> >> -- > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > -- -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.