I want to be able to check if at least one element from a list of string elements (see $el.getTags()) is contained in a list (tagService.getAvailableTags($el.getName()) using a Drools rule. I'm using a helper method for the check: CollectionUtils.containsValuesFromList(subList, targetList, checkAllValues).
For now I'm using below rule definition:
rule "Check at least one tag is set"
when
$el: Element()
$tags : tagService.getTags($el.getName())
$errors : ValidationErrors()
$condition: CollectionUtils.containsValueFromList($el.getTags(), $tags, true)
then
$errors.addError( $el, "el", "At least one tag should be set!");
end
Could it be possible to check if at least one sub list element is contained in a list, without using any helper method? Thanks.