Groovy regular expression to do a count of instances of X

veryangryman

Hi there, ive some code below to count number of instances of a String inside a larger Strin


String uniqueNString = "Data=" + node.getName() + ",Attribute=1"

int instancesOnThisNode = StringUtils.countMatches(sybaseQueryOutput, uniqueString)


To make the code more flexible, I want to remove the necessity of importing Javas StringUtils class. Ive heard suggestions of doing same via regular expressions but i cant find anything specific online.

Can anyone suggest?

croo

Have you looked at the Matcher?
http://groovy.codehaus.org/groovy-jdk/java/util/regex/Matcher.html

You'd make a reg expression of your uniqueNString

Then apply that to your sybaseQueryOutput string creating a matcher.. something like

def m = sybaseQueryOutput =~ uniqueNStringRegEx

(the =~ is the important part there)

then just look at m.count or evaluate m.size() to determine the number of matches found.