Add a method to File class: A variation of eachLine that accepts a stopClosure

StopCondition

/*
 * Add a method to File class: A variation of eachLine that accepts a stopClosure
 */
File.metaClass.eachLineBreak = { stopClosure, workClosure ->
  for (Iterator iter = delegate.iterator(); iter.hasNext();) {
    def value = iter.next()
    if (stopClosure.call(value)) {
      break
    } else {
      workClosure.call(value)
    }
  }
}

/*
 * STOP_CONDITION can be used to limit the processing for testing purposes
 */
//def STOP_CONDITION = { false }
def STOP_CONDITION = { retriever.getQueryFoundCount() == 10000 }

def count = 0
long start = System.currentTimeMillis()
new File(FILENAME).eachLineBreak( STOP_CONDITION ) {
  count++
}