code: public void setSplitPattern( String regularExpression ) throws PatternSyntaxException {
          CheckArg.isNotNull(regularExpression, "regularExpression");
          Pattern.compile(splitPattern);
          splitPattern = regularExpression;
      }
docs: Sets the regular expression to use to split incoming rows.
  
  @param regularExpression the regular expression to use to split incoming rows; may not be null.
  @throws java.util.regex.PatternSyntaxException if {@code regularExpression} does not represent a valid regular expression that can be
  {@link java.util.regex.Pattern#compile(String) compiled into a pattern}.