protected void buildExpression(String expression) throws ParseException {
expressionParsed = true;
try {
if (seconds == null) seconds = new TreeSet();
if (minutes == null) minutes = new TreeSet();
if (hours == null) hours = new TreeSet();
if (daysOfMonth == null) daysOfMonth = new TreeSet();
if (months == null) months = new TreeSet();
if (daysOfWeek == null) daysOfWeek = new TreeSet();
if (years == null) years = new TreeSet();
int exprOn = SECOND;
String[] exprsTok = expression.split(" |\\t");
for (int i = 0; i < exprsTok.length; i++) {
if (exprOn > YEAR) {
break;
}
String expr = exprsTok[i];
String[] vtok = expr.split(",");
for (int j = 0; j < vtok.length; j++) {
String v = vtok[j];
storeExpressionVals(0, v, exprOn);
}
exprOn++;
}
if (exprOn <= DAY_OF_WEEK)
throw new ParseException(MSGS.cronUnexpectedEndOfExpression(), expression.length());
if (exprOn <= YEAR) storeExpressionVals(0, "*", YEAR);
} catch (ParseException pe) {
throw pe;
} catch (Exception e) {
throw new ParseException(MSGS.cronIllegalExpressionFormat(e.toString()), 0);
}
}
