How do I use a regex or other pattern match in a Confluence Velocity Macro Template

[Hugh Kelley]

I want to use a regex to test a string in a macro #if.

I can't find a string method that will test a regex.

#if($labelName.match('.*'))
<a href="/label/$spaceKey/$label">$label</a>
#end

[Dominic Lagger]

Hi @Hugh Kelley 

Could not test it, but java gives the Matcher Class. Can you try with this?

#set($regex = ".*")
#set($matcher = $regex.matcher($labelName))
#if($matcher.matches())
<a href="/label/$spaceKey/$label">$label</a>
#end

Regards, Dominic

[Hugh Kelley]

@Dominic Lagger ,  thank you for the hint.  I had tried something similar initially but couldn't get the .matches() method to work.   When I saw your suggestion, I dug a little deeper and realized that I wasn't getting the .matches() method because my variable was of class com.atlassian.confluence.labels.Label,  not a Java String.

Once I added a .getName() method, I got a String and things worked as hoped.

#foreach ( $labelling in $page.getLabellings() )
  #set( $label = $labelling.getLabel().getName())
  #if( $label.matches($paramFeaturedLabels) )
      <a href="/label/$spaceKey/$label">$label</a>
   #end
#end