From 64d49dae5c6ac06e01866cf98081a316816d219e Mon Sep 17 00:00:00 2001 From: Martijn van Groningen Date: Thu, 20 Nov 2014 15:19:35 +0100 Subject: [PATCH] Forked CronExpression because it uses the default Locale to determine the maximum allowed year to be used. It now uses Locale.ENGLISH to do this. Original commit: elastic/x-pack-elasticsearch@41f27aa33c467013590162e5d0a6d06b5ce80539 --- src/main/java/org/quartz/CronExpression.java | 1665 ++++++++++++++++++ 1 file changed, 1665 insertions(+) create mode 100644 src/main/java/org/quartz/CronExpression.java diff --git a/src/main/java/org/quartz/CronExpression.java b/src/main/java/org/quartz/CronExpression.java new file mode 100644 index 00000000000..62416ab899d --- /dev/null +++ b/src/main/java/org/quartz/CronExpression.java @@ -0,0 +1,1665 @@ +/* + * All content copyright Terracotta, Inc., unless otherwise indicated. All rights reserved. + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may not + * use this file except in compliance with the License. You may obtain a copy + * of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + */ + +package org.quartz; + +import java.io.Serializable; +import java.text.ParseException; +import java.util.Calendar; +import java.util.Date; +import java.util.HashMap; +import java.util.Iterator; +import java.util.Locale; +import java.util.Map; +import java.util.SortedSet; +import java.util.StringTokenizer; +import java.util.TimeZone; +import java.util.TreeSet; + + +/** + * Forked because: + * 1) The MAX_YEAR static field uses the default locale + * to determine the maximum year allow in cron expressions. Which sometimes make our + * tests fail, because the locale is randomized. + */ + +/** + * Provides a parser and evaluator for unix-like cron expressions. Cron + * expressions provide the ability to specify complex time combinations such as + * "At 8:00am every Monday through Friday" or "At 1:30am every + * last Friday of the month". + *

+ * Cron expressions are comprised of 6 required fields and one optional field + * separated by white space. The fields respectively are described as follows: + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + * + *
Field Name Allowed Values Allowed Special Characters
Seconds  + * 0-59  + * , - * /
Minutes  + * 0-59  + * , - * /
Hours  + * 0-23  + * , - * /
Day-of-month  + * 1-31  + * , - * ? / L W
Month  + * 1-12 or JAN-DEC  + * , - * /
Day-of-Week  + * 1-7 or SUN-SAT  + * , - * ? / L #
Year (Optional)  + * empty, 1970-2199  + * , - * /
+ *

+ * The '*' character is used to specify all values. For example, "*" + * in the minute field means "every minute". + *

+ * The '?' character is allowed for the day-of-month and day-of-week fields. It + * is used to specify 'no specific value'. This is useful when you need to + * specify something in one of the two fields, but not the other. + *

+ * The '-' character is used to specify ranges For example "10-12" in + * the hour field means "the hours 10, 11 and 12". + *

+ * The ',' character is used to specify additional values. For example + * "MON,WED,FRI" in the day-of-week field means "the days Monday, + * Wednesday, and Friday". + *

+ * The '/' character is used to specify increments. For example "0/15" + * in the seconds field means "the seconds 0, 15, 30, and 45". And + * "5/15" in the seconds field means "the seconds 5, 20, 35, and + * 50". Specifying '*' before the '/' is equivalent to specifying 0 is + * the value to start with. Essentially, for each field in the expression, there + * is a set of numbers that can be turned on or off. For seconds and minutes, + * the numbers range from 0 to 59. For hours 0 to 23, for days of the month 0 to + * 31, and for months 1 to 12. The "/" character simply helps you turn + * on every "nth" value in the given set. Thus "7/6" in the + * month field only turns on month "7", it does NOT mean every 6th + * month, please note that subtlety. + *

+ * The 'L' character is allowed for the day-of-month and day-of-week fields. + * This character is short-hand for "last", but it has different + * meaning in each of the two fields. For example, the value "L" in + * the day-of-month field means "the last day of the month" - day 31 + * for January, day 28 for February on non-leap years. If used in the + * day-of-week field by itself, it simply means "7" or + * "SAT". But if used in the day-of-week field after another value, it + * means "the last xxx day of the month" - for example "6L" + * means "the last friday of the month". You can also specify an offset + * from the last day of the month, such as "L-3" which would mean the third-to-last + * day of the calendar month. When using the 'L' option, it is important not to + * specify lists, or ranges of values, as you'll get confusing/unexpected results. + *

+ * The 'W' character is allowed for the day-of-month field. This character + * is used to specify the weekday (Monday-Friday) nearest the given day. As an + * example, if you were to specify "15W" as the value for the + * day-of-month field, the meaning is: "the nearest weekday to the 15th of + * the month". So if the 15th is a Saturday, the trigger will fire on + * Friday the 14th. If the 15th is a Sunday, the trigger will fire on Monday the + * 16th. If the 15th is a Tuesday, then it will fire on Tuesday the 15th. + * However if you specify "1W" as the value for day-of-month, and the + * 1st is a Saturday, the trigger will fire on Monday the 3rd, as it will not + * 'jump' over the boundary of a month's days. The 'W' character can only be + * specified when the day-of-month is a single day, not a range or list of days. + *

+ * The 'L' and 'W' characters can also be combined for the day-of-month + * expression to yield 'LW', which translates to "last weekday of the + * month". + *

+ * The '#' character is allowed for the day-of-week field. This character is + * used to specify "the nth" XXX day of the month. For example, the + * value of "6#3" in the day-of-week field means the third Friday of + * the month (day 6 = Friday and "#3" = the 3rd one in the month). + * Other examples: "2#1" = the first Monday of the month and + * "4#5" = the fifth Wednesday of the month. Note that if you specify + * "#5" and there is not 5 of the given day-of-week in the month, then + * no firing will occur that month. If the '#' character is used, there can + * only be one expression in the day-of-week field ("3#1,6#3" is + * not valid, since there are two expressions). + *

+ * + *

+ * The legal characters and the names of months and days of the week are not + * case sensitive. + * + *

+ * NOTES: + *

+ *

+ * + * + * @author Sharada Jambula, James House + * @author Contributions from Mads Henderson + * @author Refactoring from CronTrigger to CronExpression by Aaron Craven + */ +public final class CronExpression implements Serializable, Cloneable { + + private static final long serialVersionUID = 12423409423L; + + protected static final int SECOND = 0; + protected static final int MINUTE = 1; + protected static final int HOUR = 2; + protected static final int DAY_OF_MONTH = 3; + protected static final int MONTH = 4; + protected static final int DAY_OF_WEEK = 5; + protected static final int YEAR = 6; + protected static final int ALL_SPEC_INT = 99; // '*' + protected static final int NO_SPEC_INT = 98; // '?' + protected static final Integer ALL_SPEC = ALL_SPEC_INT; + protected static final Integer NO_SPEC = NO_SPEC_INT; + + protected static final Map monthMap = new HashMap(20); + protected static final Map dayMap = new HashMap(60); + static { + monthMap.put("JAN", 0); + monthMap.put("FEB", 1); + monthMap.put("MAR", 2); + monthMap.put("APR", 3); + monthMap.put("MAY", 4); + monthMap.put("JUN", 5); + monthMap.put("JUL", 6); + monthMap.put("AUG", 7); + monthMap.put("SEP", 8); + monthMap.put("OCT", 9); + monthMap.put("NOV", 10); + monthMap.put("DEC", 11); + + dayMap.put("SUN", 1); + dayMap.put("MON", 2); + dayMap.put("TUE", 3); + dayMap.put("WED", 4); + dayMap.put("THU", 5); + dayMap.put("FRI", 6); + dayMap.put("SAT", 7); + } + + private final String cronExpression; + private TimeZone timeZone = null; + protected transient TreeSet seconds; + protected transient TreeSet minutes; + protected transient TreeSet hours; + protected transient TreeSet daysOfMonth; + protected transient TreeSet months; + protected transient TreeSet daysOfWeek; + protected transient TreeSet years; + + protected transient boolean lastdayOfWeek = false; + protected transient int nthdayOfWeek = 0; + protected transient boolean lastdayOfMonth = false; + protected transient boolean nearestWeekday = false; + protected transient int lastdayOffset = 0; + protected transient boolean expressionParsed = false; + + // BEGIN CHANGE: + public static final int MAX_YEAR = Calendar.getInstance(Locale.ENGLISH).get(Calendar.YEAR) + 100; + // END CHANGE + + /** + * Constructs a new CronExpression based on the specified + * parameter. + * + * @param cronExpression String representation of the cron expression the + * new object should represent + * @throws java.text.ParseException + * if the string expression cannot be parsed into a valid + * CronExpression + */ + public CronExpression(String cronExpression) throws ParseException { + if (cronExpression == null) { + throw new IllegalArgumentException("cronExpression cannot be null"); + } + + this.cronExpression = cronExpression.toUpperCase(Locale.US); + + buildExpression(this.cronExpression); + } + + /** + * Constructs a new {@code CronExpression} as a copy of an existing + * instance. + * + * @param expression + * The existing cron expression to be copied + */ + public CronExpression(CronExpression expression) { + /* + * We don't call the other constructor here since we need to swallow the + * ParseException. We also elide some of the sanity checking as it is + * not logically trippable. + */ + this.cronExpression = expression.getCronExpression(); + try { + buildExpression(cronExpression); + } catch (ParseException ex) { + throw new AssertionError(); + } + if (expression.getTimeZone() != null) { + setTimeZone((TimeZone) expression.getTimeZone().clone()); + } + } + + /** + * Indicates whether the given date satisfies the cron expression. Note that + * milliseconds are ignored, so two Dates falling on different milliseconds + * of the same second will always have the same result here. + * + * @param date the date to evaluate + * @return a boolean indicating whether the given date satisfies the cron + * expression + */ + public boolean isSatisfiedBy(Date date) { + Calendar testDateCal = Calendar.getInstance(getTimeZone()); + testDateCal.setTime(date); + testDateCal.set(Calendar.MILLISECOND, 0); + Date originalDate = testDateCal.getTime(); + + testDateCal.add(Calendar.SECOND, -1); + + Date timeAfter = getTimeAfter(testDateCal.getTime()); + + return ((timeAfter != null) && (timeAfter.equals(originalDate))); + } + + /** + * Returns the next date/time after the given date/time which + * satisfies the cron expression. + * + * @param date the date/time at which to begin the search for the next valid + * date/time + * @return the next valid date/time + */ + public Date getNextValidTimeAfter(Date date) { + return getTimeAfter(date); + } + + /** + * Returns the next date/time after the given date/time which does + * not satisfy the expression + * + * @param date the date/time at which to begin the search for the next + * invalid date/time + * @return the next valid date/time + */ + public Date getNextInvalidTimeAfter(Date date) { + long difference = 1000; + + //move back to the nearest second so differences will be accurate + Calendar adjustCal = Calendar.getInstance(getTimeZone()); + adjustCal.setTime(date); + adjustCal.set(Calendar.MILLISECOND, 0); + Date lastDate = adjustCal.getTime(); + + Date newDate; + + //FUTURE_TODO: (QUARTZ-481) IMPROVE THIS! The following is a BAD solution to this problem. Performance will be very bad here, depending on the cron expression. It is, however A solution. + + //keep getting the next included time until it's farther than one second + // apart. At that point, lastDate is the last valid fire time. We return + // the second immediately following it. + while (difference == 1000) { + newDate = getTimeAfter(lastDate); + if(newDate == null) + break; + + difference = newDate.getTime() - lastDate.getTime(); + + if (difference == 1000) { + lastDate = newDate; + } + } + + return new Date(lastDate.getTime() + 1000); + } + + /** + * Returns the time zone for which this CronExpression + * will be resolved. + */ + public TimeZone getTimeZone() { + if (timeZone == null) { + timeZone = TimeZone.getDefault(); + } + + return timeZone; + } + + /** + * Sets the time zone for which this CronExpression + * will be resolved. + */ + public void setTimeZone(TimeZone timeZone) { + this.timeZone = timeZone; + } + + /** + * Returns the string representation of the CronExpression + * + * @return a string representation of the CronExpression + */ + @Override + public String toString() { + return cronExpression; + } + + /** + * Indicates whether the specified cron expression can be parsed into a + * valid cron expression + * + * @param cronExpression the expression to evaluate + * @return a boolean indicating whether the given expression is a valid cron + * expression + */ + public static boolean isValidExpression(String cronExpression) { + + try { + new CronExpression(cronExpression); + } catch (ParseException pe) { + return false; + } + + return true; + } + + public static void validateExpression(String cronExpression) throws ParseException { + + new CronExpression(cronExpression); + } + + + //////////////////////////////////////////////////////////////////////////// + // + // Expression Parsing Functions + // + //////////////////////////////////////////////////////////////////////////// + + 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; + + StringTokenizer exprsTok = new StringTokenizer(expression, " \t", + false); + + while (exprsTok.hasMoreTokens() && exprOn <= YEAR) { + String expr = exprsTok.nextToken().trim(); + + // throw an exception if L is used with other days of the month + if(exprOn == DAY_OF_MONTH && expr.indexOf('L') != -1 && expr.length() > 1 && expr.contains(",")) { + throw new ParseException("Support for specifying 'L' and 'LW' with other days of the month is not implemented", -1); + } + // throw an exception if L is used with other days of the week + if(exprOn == DAY_OF_WEEK && expr.indexOf('L') != -1 && expr.length() > 1 && expr.contains(",")) { + throw new ParseException("Support for specifying 'L' with other days of the week is not implemented", -1); + } + if(exprOn == DAY_OF_WEEK && expr.indexOf('#') != -1 && expr.indexOf('#', expr.indexOf('#') +1) != -1) { + throw new ParseException("Support for specifying multiple \"nth\" days is not implemented.", -1); + } + + StringTokenizer vTok = new StringTokenizer(expr, ","); + while (vTok.hasMoreTokens()) { + String v = vTok.nextToken(); + storeExpressionVals(0, v, exprOn); + } + + exprOn++; + } + + if (exprOn <= DAY_OF_WEEK) { + throw new ParseException("Unexpected end of expression.", + expression.length()); + } + + if (exprOn <= YEAR) { + storeExpressionVals(0, "*", YEAR); + } + + TreeSet dow = getSet(DAY_OF_WEEK); + TreeSet dom = getSet(DAY_OF_MONTH); + + // Copying the logic from the UnsupportedOperationException below + boolean dayOfMSpec = !dom.contains(NO_SPEC); + boolean dayOfWSpec = !dow.contains(NO_SPEC); + + if (!dayOfMSpec || dayOfWSpec) { + if (!dayOfWSpec || dayOfMSpec) { + throw new ParseException( + "Support for specifying both a day-of-week AND a day-of-month parameter is not implemented.", 0); + } + } + } catch (ParseException pe) { + throw pe; + } catch (Exception e) { + throw new ParseException("Illegal cron expression format (" + + e.toString() + ")", 0); + } + } + + protected int storeExpressionVals(int pos, String s, int type) + throws ParseException { + + int incr = 0; + int i = skipWhiteSpace(pos, s); + if (i >= s.length()) { + return i; + } + char c = s.charAt(i); + if ((c >= 'A') && (c <= 'Z') && (!s.equals("L")) && (!s.equals("LW")) && (!s.matches("^L-[0-9]*[W]?"))) { + String sub = s.substring(i, i + 3); + int sval = -1; + int eval = -1; + if (type == MONTH) { + sval = getMonthNumber(sub) + 1; + if (sval <= 0) { + throw new ParseException("Invalid Month value: '" + sub + "'", i); + } + if (s.length() > i + 3) { + c = s.charAt(i + 3); + if (c == '-') { + i += 4; + sub = s.substring(i, i + 3); + eval = getMonthNumber(sub) + 1; + if (eval <= 0) { + throw new ParseException("Invalid Month value: '" + sub + "'", i); + } + } + } + } else if (type == DAY_OF_WEEK) { + sval = getDayOfWeekNumber(sub); + if (sval < 0) { + throw new ParseException("Invalid Day-of-Week value: '" + + sub + "'", i); + } + if (s.length() > i + 3) { + c = s.charAt(i + 3); + if (c == '-') { + i += 4; + sub = s.substring(i, i + 3); + eval = getDayOfWeekNumber(sub); + if (eval < 0) { + throw new ParseException( + "Invalid Day-of-Week value: '" + sub + + "'", i); + } + } else if (c == '#') { + try { + i += 4; + nthdayOfWeek = Integer.parseInt(s.substring(i)); + if (nthdayOfWeek < 1 || nthdayOfWeek > 5) { + throw new Exception(); + } + } catch (Exception e) { + throw new ParseException( + "A numeric value between 1 and 5 must follow the '#' option", + i); + } + } else if (c == 'L') { + lastdayOfWeek = true; + i++; + } + } + + } else { + throw new ParseException( + "Illegal characters for this position: '" + sub + "'", + i); + } + if (eval != -1) { + incr = 1; + } + addToSet(sval, eval, incr, type); + return (i + 3); + } + + if (c == '?') { + i++; + if ((i + 1) < s.length() + && (s.charAt(i) != ' ' && s.charAt(i + 1) != '\t')) { + throw new ParseException("Illegal character after '?': " + + s.charAt(i), i); + } + if (type != DAY_OF_WEEK && type != DAY_OF_MONTH) { + throw new ParseException( + "'?' can only be specfied for Day-of-Month or Day-of-Week.", + i); + } + if (type == DAY_OF_WEEK && !lastdayOfMonth) { + int val = daysOfMonth.last(); + if (val == NO_SPEC_INT) { + throw new ParseException( + "'?' can only be specfied for Day-of-Month -OR- Day-of-Week.", + i); + } + } + + addToSet(NO_SPEC_INT, -1, 0, type); + return i; + } + + if (c == '*' || c == '/') { + if (c == '*' && (i + 1) >= s.length()) { + addToSet(ALL_SPEC_INT, -1, incr, type); + return i + 1; + } else if (c == '/' + && ((i + 1) >= s.length() || s.charAt(i + 1) == ' ' || s + .charAt(i + 1) == '\t')) { + throw new ParseException("'/' must be followed by an integer.", i); + } else if (c == '*') { + i++; + } + c = s.charAt(i); + if (c == '/') { // is an increment specified? + i++; + if (i >= s.length()) { + throw new ParseException("Unexpected end of string.", i); + } + + incr = getNumericValue(s, i); + + i++; + if (incr > 10) { + i++; + } + if (incr > 59 && (type == SECOND || type == MINUTE)) { + throw new ParseException("Increment > 60 : " + incr, i); + } else if (incr > 23 && (type == HOUR)) { + throw new ParseException("Increment > 24 : " + incr, i); + } else if (incr > 31 && (type == DAY_OF_MONTH)) { + throw new ParseException("Increment > 31 : " + incr, i); + } else if (incr > 7 && (type == DAY_OF_WEEK)) { + throw new ParseException("Increment > 7 : " + incr, i); + } else if (incr > 12 && (type == MONTH)) { + throw new ParseException("Increment > 12 : " + incr, i); + } + } else { + incr = 1; + } + + addToSet(ALL_SPEC_INT, -1, incr, type); + return i; + } else if (c == 'L') { + i++; + if (type == DAY_OF_MONTH) { + lastdayOfMonth = true; + } + if (type == DAY_OF_WEEK) { + addToSet(7, 7, 0, type); + } + if(type == DAY_OF_MONTH && s.length() > i) { + c = s.charAt(i); + if(c == '-') { + ValueSet vs = getValue(0, s, i+1); + lastdayOffset = vs.value; + if(lastdayOffset > 30) + throw new ParseException("Offset from last day must be <= 30", i+1); + i = vs.pos; + } + if(s.length() > i) { + c = s.charAt(i); + if(c == 'W') { + nearestWeekday = true; + i++; + } + } + } + return i; + } else if (c >= '0' && c <= '9') { + int val = Integer.parseInt(String.valueOf(c)); + i++; + if (i >= s.length()) { + addToSet(val, -1, -1, type); + } else { + c = s.charAt(i); + if (c >= '0' && c <= '9') { + ValueSet vs = getValue(val, s, i); + val = vs.value; + i = vs.pos; + } + i = checkNext(i, s, val, type); + return i; + } + } else { + throw new ParseException("Unexpected character: " + c, i); + } + + return i; + } + + protected int checkNext(int pos, String s, int val, int type) + throws ParseException { + + int end = -1; + int i = pos; + + if (i >= s.length()) { + addToSet(val, end, -1, type); + return i; + } + + char c = s.charAt(pos); + + if (c == 'L') { + if (type == DAY_OF_WEEK) { + if(val < 1 || val > 7) + throw new ParseException("Day-of-Week values must be between 1 and 7", -1); + lastdayOfWeek = true; + } else { + throw new ParseException("'L' option is not valid here. (pos=" + i + ")", i); + } + TreeSet set = getSet(type); + set.add(val); + i++; + return i; + } + + if (c == 'W') { + if (type == DAY_OF_MONTH) { + nearestWeekday = true; + } else { + throw new ParseException("'W' option is not valid here. (pos=" + i + ")", i); + } + if(val > 31) + throw new ParseException("The 'W' option does not make sense with values larger than 31 (max number of days in a month)", i); + TreeSet set = getSet(type); + set.add(val); + i++; + return i; + } + + if (c == '#') { + if (type != DAY_OF_WEEK) { + throw new ParseException("'#' option is not valid here. (pos=" + i + ")", i); + } + i++; + try { + nthdayOfWeek = Integer.parseInt(s.substring(i)); + if (nthdayOfWeek < 1 || nthdayOfWeek > 5) { + throw new Exception(); + } + } catch (Exception e) { + throw new ParseException( + "A numeric value between 1 and 5 must follow the '#' option", + i); + } + + TreeSet set = getSet(type); + set.add(val); + i++; + return i; + } + + if (c == '-') { + i++; + c = s.charAt(i); + int v = Integer.parseInt(String.valueOf(c)); + end = v; + i++; + if (i >= s.length()) { + addToSet(val, end, 1, type); + return i; + } + c = s.charAt(i); + if (c >= '0' && c <= '9') { + ValueSet vs = getValue(v, s, i); + end = vs.value; + i = vs.pos; + } + if (i < s.length() && ((c = s.charAt(i)) == '/')) { + i++; + c = s.charAt(i); + int v2 = Integer.parseInt(String.valueOf(c)); + i++; + if (i >= s.length()) { + addToSet(val, end, v2, type); + return i; + } + c = s.charAt(i); + if (c >= '0' && c <= '9') { + ValueSet vs = getValue(v2, s, i); + int v3 = vs.value; + addToSet(val, end, v3, type); + i = vs.pos; + return i; + } else { + addToSet(val, end, v2, type); + return i; + } + } else { + addToSet(val, end, 1, type); + return i; + } + } + + if (c == '/') { + i++; + c = s.charAt(i); + int v2 = Integer.parseInt(String.valueOf(c)); + i++; + if (i >= s.length()) { + addToSet(val, end, v2, type); + return i; + } + c = s.charAt(i); + if (c >= '0' && c <= '9') { + ValueSet vs = getValue(v2, s, i); + int v3 = vs.value; + addToSet(val, end, v3, type); + i = vs.pos; + return i; + } else { + throw new ParseException("Unexpected character '" + c + "' after '/'", i); + } + } + + addToSet(val, end, 0, type); + i++; + return i; + } + + public String getCronExpression() { + return cronExpression; + } + + public String getExpressionSummary() { + StringBuilder buf = new StringBuilder(); + + buf.append("seconds: "); + buf.append(getExpressionSetSummary(seconds)); + buf.append("\n"); + buf.append("minutes: "); + buf.append(getExpressionSetSummary(minutes)); + buf.append("\n"); + buf.append("hours: "); + buf.append(getExpressionSetSummary(hours)); + buf.append("\n"); + buf.append("daysOfMonth: "); + buf.append(getExpressionSetSummary(daysOfMonth)); + buf.append("\n"); + buf.append("months: "); + buf.append(getExpressionSetSummary(months)); + buf.append("\n"); + buf.append("daysOfWeek: "); + buf.append(getExpressionSetSummary(daysOfWeek)); + buf.append("\n"); + buf.append("lastdayOfWeek: "); + buf.append(lastdayOfWeek); + buf.append("\n"); + buf.append("nearestWeekday: "); + buf.append(nearestWeekday); + buf.append("\n"); + buf.append("NthDayOfWeek: "); + buf.append(nthdayOfWeek); + buf.append("\n"); + buf.append("lastdayOfMonth: "); + buf.append(lastdayOfMonth); + buf.append("\n"); + buf.append("years: "); + buf.append(getExpressionSetSummary(years)); + buf.append("\n"); + + return buf.toString(); + } + + protected String getExpressionSetSummary(java.util.Set set) { + + if (set.contains(NO_SPEC)) { + return "?"; + } + if (set.contains(ALL_SPEC)) { + return "*"; + } + + StringBuilder buf = new StringBuilder(); + + Iterator itr = set.iterator(); + boolean first = true; + while (itr.hasNext()) { + Integer iVal = itr.next(); + String val = iVal.toString(); + if (!first) { + buf.append(","); + } + buf.append(val); + first = false; + } + + return buf.toString(); + } + + protected String getExpressionSetSummary(java.util.ArrayList list) { + + if (list.contains(NO_SPEC)) { + return "?"; + } + if (list.contains(ALL_SPEC)) { + return "*"; + } + + StringBuilder buf = new StringBuilder(); + + Iterator itr = list.iterator(); + boolean first = true; + while (itr.hasNext()) { + Integer iVal = itr.next(); + String val = iVal.toString(); + if (!first) { + buf.append(","); + } + buf.append(val); + first = false; + } + + return buf.toString(); + } + + protected int skipWhiteSpace(int i, String s) { + for (; i < s.length() && (s.charAt(i) == ' ' || s.charAt(i) == '\t'); i++) { + ; + } + + return i; + } + + protected int findNextWhiteSpace(int i, String s) { + for (; i < s.length() && (s.charAt(i) != ' ' || s.charAt(i) != '\t'); i++) { + ; + } + + return i; + } + + protected void addToSet(int val, int end, int incr, int type) + throws ParseException { + + TreeSet set = getSet(type); + + if (type == SECOND || type == MINUTE) { + if ((val < 0 || val > 59 || end > 59) && (val != ALL_SPEC_INT)) { + throw new ParseException( + "Minute and Second values must be between 0 and 59", + -1); + } + } else if (type == HOUR) { + if ((val < 0 || val > 23 || end > 23) && (val != ALL_SPEC_INT)) { + throw new ParseException( + "Hour values must be between 0 and 23", -1); + } + } else if (type == DAY_OF_MONTH) { + if ((val < 1 || val > 31 || end > 31) && (val != ALL_SPEC_INT) + && (val != NO_SPEC_INT)) { + throw new ParseException( + "Day of month values must be between 1 and 31", -1); + } + } else if (type == MONTH) { + if ((val < 1 || val > 12 || end > 12) && (val != ALL_SPEC_INT)) { + throw new ParseException( + "Month values must be between 1 and 12", -1); + } + } else if (type == DAY_OF_WEEK) { + if ((val == 0 || val > 7 || end > 7) && (val != ALL_SPEC_INT) + && (val != NO_SPEC_INT)) { + throw new ParseException( + "Day-of-Week values must be between 1 and 7", -1); + } + } + + if ((incr == 0 || incr == -1) && val != ALL_SPEC_INT) { + if (val != -1) { + set.add(val); + } else { + set.add(NO_SPEC); + } + + return; + } + + int startAt = val; + int stopAt = end; + + if (val == ALL_SPEC_INT && incr <= 0) { + incr = 1; + set.add(ALL_SPEC); // put in a marker, but also fill values + } + + if (type == SECOND || type == MINUTE) { + if (stopAt == -1) { + stopAt = 59; + } + if (startAt == -1 || startAt == ALL_SPEC_INT) { + startAt = 0; + } + } else if (type == HOUR) { + if (stopAt == -1) { + stopAt = 23; + } + if (startAt == -1 || startAt == ALL_SPEC_INT) { + startAt = 0; + } + } else if (type == DAY_OF_MONTH) { + if (stopAt == -1) { + stopAt = 31; + } + if (startAt == -1 || startAt == ALL_SPEC_INT) { + startAt = 1; + } + } else if (type == MONTH) { + if (stopAt == -1) { + stopAt = 12; + } + if (startAt == -1 || startAt == ALL_SPEC_INT) { + startAt = 1; + } + } else if (type == DAY_OF_WEEK) { + if (stopAt == -1) { + stopAt = 7; + } + if (startAt == -1 || startAt == ALL_SPEC_INT) { + startAt = 1; + } + } else if (type == YEAR) { + if (stopAt == -1) { + stopAt = MAX_YEAR; + } + if (startAt == -1 || startAt == ALL_SPEC_INT) { + startAt = 1970; + } + } + + // if the end of the range is before the start, then we need to overflow into + // the next day, month etc. This is done by adding the maximum amount for that + // type, and using modulus max to determine the value being added. + int max = -1; + if (stopAt < startAt) { + switch (type) { + case SECOND : max = 60; break; + case MINUTE : max = 60; break; + case HOUR : max = 24; break; + case MONTH : max = 12; break; + case DAY_OF_WEEK : max = 7; break; + case DAY_OF_MONTH : max = 31; break; + case YEAR : throw new IllegalArgumentException("Start year must be less than stop year"); + default : throw new IllegalArgumentException("Unexpected type encountered"); + } + stopAt += max; + } + + for (int i = startAt; i <= stopAt; i += incr) { + if (max == -1) { + // ie: there's no max to overflow over + set.add(i); + } else { + // take the modulus to get the real value + int i2 = i % max; + + // 1-indexed ranges should not include 0, and should include their max + if (i2 == 0 && (type == MONTH || type == DAY_OF_WEEK || type == DAY_OF_MONTH) ) { + i2 = max; + } + + set.add(i2); + } + } + } + + TreeSet getSet(int type) { + switch (type) { + case SECOND: + return seconds; + case MINUTE: + return minutes; + case HOUR: + return hours; + case DAY_OF_MONTH: + return daysOfMonth; + case MONTH: + return months; + case DAY_OF_WEEK: + return daysOfWeek; + case YEAR: + return years; + default: + return null; + } + } + + protected ValueSet getValue(int v, String s, int i) { + char c = s.charAt(i); + StringBuilder s1 = new StringBuilder(String.valueOf(v)); + while (c >= '0' && c <= '9') { + s1.append(c); + i++; + if (i >= s.length()) { + break; + } + c = s.charAt(i); + } + ValueSet val = new ValueSet(); + + val.pos = (i < s.length()) ? i : i + 1; + val.value = Integer.parseInt(s1.toString()); + return val; + } + + protected int getNumericValue(String s, int i) { + int endOfVal = findNextWhiteSpace(i, s); + String val = s.substring(i, endOfVal); + return Integer.parseInt(val); + } + + protected int getMonthNumber(String s) { + Integer integer = monthMap.get(s); + + if (integer == null) { + return -1; + } + + return integer; + } + + protected int getDayOfWeekNumber(String s) { + Integer integer = dayMap.get(s); + + if (integer == null) { + return -1; + } + + return integer; + } + + //////////////////////////////////////////////////////////////////////////// + // + // Computation Functions + // + //////////////////////////////////////////////////////////////////////////// + + public Date getTimeAfter(Date afterTime) { + + // Computation is based on Gregorian year only. + Calendar cl = new java.util.GregorianCalendar(getTimeZone()); + + // move ahead one second, since we're computing the time *after* the + // given time + afterTime = new Date(afterTime.getTime() + 1000); + // CronTrigger does not deal with milliseconds + cl.setTime(afterTime); + cl.set(Calendar.MILLISECOND, 0); + + boolean gotOne = false; + // loop until we've computed the next time, or we've past the endTime + while (!gotOne) { + + //if (endTime != null && cl.getTime().after(endTime)) return null; + if(cl.get(Calendar.YEAR) > 2999) { // prevent endless loop... + return null; + } + + SortedSet st = null; + int t = 0; + + int sec = cl.get(Calendar.SECOND); + int min = cl.get(Calendar.MINUTE); + + // get second................................................. + st = seconds.tailSet(sec); + if (st != null && st.size() != 0) { + sec = st.first(); + } else { + sec = seconds.first(); + min++; + cl.set(Calendar.MINUTE, min); + } + cl.set(Calendar.SECOND, sec); + + min = cl.get(Calendar.MINUTE); + int hr = cl.get(Calendar.HOUR_OF_DAY); + t = -1; + + // get minute................................................. + st = minutes.tailSet(min); + if (st != null && st.size() != 0) { + t = min; + min = st.first(); + } else { + min = minutes.first(); + hr++; + } + if (min != t) { + cl.set(Calendar.SECOND, 0); + cl.set(Calendar.MINUTE, min); + setCalendarHour(cl, hr); + continue; + } + cl.set(Calendar.MINUTE, min); + + hr = cl.get(Calendar.HOUR_OF_DAY); + int day = cl.get(Calendar.DAY_OF_MONTH); + t = -1; + + // get hour................................................... + st = hours.tailSet(hr); + if (st != null && st.size() != 0) { + t = hr; + hr = st.first(); + } else { + hr = hours.first(); + day++; + } + if (hr != t) { + cl.set(Calendar.SECOND, 0); + cl.set(Calendar.MINUTE, 0); + cl.set(Calendar.DAY_OF_MONTH, day); + setCalendarHour(cl, hr); + continue; + } + cl.set(Calendar.HOUR_OF_DAY, hr); + + day = cl.get(Calendar.DAY_OF_MONTH); + int mon = cl.get(Calendar.MONTH) + 1; + // '+ 1' because calendar is 0-based for this field, and we are + // 1-based + t = -1; + int tmon = mon; + + // get day................................................... + boolean dayOfMSpec = !daysOfMonth.contains(NO_SPEC); + boolean dayOfWSpec = !daysOfWeek.contains(NO_SPEC); + if (dayOfMSpec && !dayOfWSpec) { // get day by day of month rule + st = daysOfMonth.tailSet(day); + if (lastdayOfMonth) { + if(!nearestWeekday) { + t = day; + day = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); + day -= lastdayOffset; + if(t > day) { + mon++; + if(mon > 12) { + mon = 1; + tmon = 3333; // ensure test of mon != tmon further below fails + cl.add(Calendar.YEAR, 1); + } + day = 1; + } + } else { + t = day; + day = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); + day -= lastdayOffset; + + java.util.Calendar tcal = java.util.Calendar.getInstance(getTimeZone()); + tcal.set(Calendar.SECOND, 0); + tcal.set(Calendar.MINUTE, 0); + tcal.set(Calendar.HOUR_OF_DAY, 0); + tcal.set(Calendar.DAY_OF_MONTH, day); + tcal.set(Calendar.MONTH, mon - 1); + tcal.set(Calendar.YEAR, cl.get(Calendar.YEAR)); + + int ldom = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); + int dow = tcal.get(Calendar.DAY_OF_WEEK); + + if(dow == Calendar.SATURDAY && day == 1) { + day += 2; + } else if(dow == Calendar.SATURDAY) { + day -= 1; + } else if(dow == Calendar.SUNDAY && day == ldom) { + day -= 2; + } else if(dow == Calendar.SUNDAY) { + day += 1; + } + + tcal.set(Calendar.SECOND, sec); + tcal.set(Calendar.MINUTE, min); + tcal.set(Calendar.HOUR_OF_DAY, hr); + tcal.set(Calendar.DAY_OF_MONTH, day); + tcal.set(Calendar.MONTH, mon - 1); + Date nTime = tcal.getTime(); + if(nTime.before(afterTime)) { + day = 1; + mon++; + } + } + } else if(nearestWeekday) { + t = day; + day = daysOfMonth.first(); + + java.util.Calendar tcal = java.util.Calendar.getInstance(getTimeZone()); + tcal.set(Calendar.SECOND, 0); + tcal.set(Calendar.MINUTE, 0); + tcal.set(Calendar.HOUR_OF_DAY, 0); + tcal.set(Calendar.DAY_OF_MONTH, day); + tcal.set(Calendar.MONTH, mon - 1); + tcal.set(Calendar.YEAR, cl.get(Calendar.YEAR)); + + int ldom = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); + int dow = tcal.get(Calendar.DAY_OF_WEEK); + + if(dow == Calendar.SATURDAY && day == 1) { + day += 2; + } else if(dow == Calendar.SATURDAY) { + day -= 1; + } else if(dow == Calendar.SUNDAY && day == ldom) { + day -= 2; + } else if(dow == Calendar.SUNDAY) { + day += 1; + } + + + tcal.set(Calendar.SECOND, sec); + tcal.set(Calendar.MINUTE, min); + tcal.set(Calendar.HOUR_OF_DAY, hr); + tcal.set(Calendar.DAY_OF_MONTH, day); + tcal.set(Calendar.MONTH, mon - 1); + Date nTime = tcal.getTime(); + if(nTime.before(afterTime)) { + day = daysOfMonth.first(); + mon++; + } + } else if (st != null && st.size() != 0) { + t = day; + day = st.first(); + // make sure we don't over-run a short month, such as february + int lastDay = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); + if (day > lastDay) { + day = daysOfMonth.first(); + mon++; + } + } else { + day = daysOfMonth.first(); + mon++; + } + + if (day != t || mon != tmon) { + cl.set(Calendar.SECOND, 0); + cl.set(Calendar.MINUTE, 0); + cl.set(Calendar.HOUR_OF_DAY, 0); + cl.set(Calendar.DAY_OF_MONTH, day); + cl.set(Calendar.MONTH, mon - 1); + // '- 1' because calendar is 0-based for this field, and we + // are 1-based + continue; + } + } else if (dayOfWSpec && !dayOfMSpec) { // get day by day of week rule + if (lastdayOfWeek) { // are we looking for the last XXX day of + // the month? + int dow = daysOfWeek.first(); // desired + // d-o-w + int cDow = cl.get(Calendar.DAY_OF_WEEK); // current d-o-w + int daysToAdd = 0; + if (cDow < dow) { + daysToAdd = dow - cDow; + } + if (cDow > dow) { + daysToAdd = dow + (7 - cDow); + } + + int lDay = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); + + if (day + daysToAdd > lDay) { // did we already miss the + // last one? + cl.set(Calendar.SECOND, 0); + cl.set(Calendar.MINUTE, 0); + cl.set(Calendar.HOUR_OF_DAY, 0); + cl.set(Calendar.DAY_OF_MONTH, 1); + cl.set(Calendar.MONTH, mon); + // no '- 1' here because we are promoting the month + continue; + } + + // find date of last occurrence of this day in this month... + while ((day + daysToAdd + 7) <= lDay) { + daysToAdd += 7; + } + + day += daysToAdd; + + if (daysToAdd > 0) { + cl.set(Calendar.SECOND, 0); + cl.set(Calendar.MINUTE, 0); + cl.set(Calendar.HOUR_OF_DAY, 0); + cl.set(Calendar.DAY_OF_MONTH, day); + cl.set(Calendar.MONTH, mon - 1); + // '- 1' here because we are not promoting the month + continue; + } + + } else if (nthdayOfWeek != 0) { + // are we looking for the Nth XXX day in the month? + int dow = daysOfWeek.first(); // desired + // d-o-w + int cDow = cl.get(Calendar.DAY_OF_WEEK); // current d-o-w + int daysToAdd = 0; + if (cDow < dow) { + daysToAdd = dow - cDow; + } else if (cDow > dow) { + daysToAdd = dow + (7 - cDow); + } + + boolean dayShifted = false; + if (daysToAdd > 0) { + dayShifted = true; + } + + day += daysToAdd; + int weekOfMonth = day / 7; + if (day % 7 > 0) { + weekOfMonth++; + } + + daysToAdd = (nthdayOfWeek - weekOfMonth) * 7; + day += daysToAdd; + if (daysToAdd < 0 + || day > getLastDayOfMonth(mon, cl + .get(Calendar.YEAR))) { + cl.set(Calendar.SECOND, 0); + cl.set(Calendar.MINUTE, 0); + cl.set(Calendar.HOUR_OF_DAY, 0); + cl.set(Calendar.DAY_OF_MONTH, 1); + cl.set(Calendar.MONTH, mon); + // no '- 1' here because we are promoting the month + continue; + } else if (daysToAdd > 0 || dayShifted) { + cl.set(Calendar.SECOND, 0); + cl.set(Calendar.MINUTE, 0); + cl.set(Calendar.HOUR_OF_DAY, 0); + cl.set(Calendar.DAY_OF_MONTH, day); + cl.set(Calendar.MONTH, mon - 1); + // '- 1' here because we are NOT promoting the month + continue; + } + } else { + int cDow = cl.get(Calendar.DAY_OF_WEEK); // current d-o-w + int dow = daysOfWeek.first(); // desired + // d-o-w + st = daysOfWeek.tailSet(cDow); + if (st != null && st.size() > 0) { + dow = st.first(); + } + + int daysToAdd = 0; + if (cDow < dow) { + daysToAdd = dow - cDow; + } + if (cDow > dow) { + daysToAdd = dow + (7 - cDow); + } + + int lDay = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); + + if (day + daysToAdd > lDay) { // will we pass the end of + // the month? + cl.set(Calendar.SECOND, 0); + cl.set(Calendar.MINUTE, 0); + cl.set(Calendar.HOUR_OF_DAY, 0); + cl.set(Calendar.DAY_OF_MONTH, 1); + cl.set(Calendar.MONTH, mon); + // no '- 1' here because we are promoting the month + continue; + } else if (daysToAdd > 0) { // are we swithing days? + cl.set(Calendar.SECOND, 0); + cl.set(Calendar.MINUTE, 0); + cl.set(Calendar.HOUR_OF_DAY, 0); + cl.set(Calendar.DAY_OF_MONTH, day + daysToAdd); + cl.set(Calendar.MONTH, mon - 1); + // '- 1' because calendar is 0-based for this field, + // and we are 1-based + continue; + } + } + } else { // dayOfWSpec && !dayOfMSpec + throw new UnsupportedOperationException( + "Support for specifying both a day-of-week AND a day-of-month parameter is not implemented."); + } + cl.set(Calendar.DAY_OF_MONTH, day); + + mon = cl.get(Calendar.MONTH) + 1; + // '+ 1' because calendar is 0-based for this field, and we are + // 1-based + int year = cl.get(Calendar.YEAR); + t = -1; + + // test for expressions that never generate a valid fire date, + // but keep looping... + if (year > MAX_YEAR) { + return null; + } + + // get month................................................... + st = months.tailSet(mon); + if (st != null && st.size() != 0) { + t = mon; + mon = st.first(); + } else { + mon = months.first(); + year++; + } + if (mon != t) { + cl.set(Calendar.SECOND, 0); + cl.set(Calendar.MINUTE, 0); + cl.set(Calendar.HOUR_OF_DAY, 0); + cl.set(Calendar.DAY_OF_MONTH, 1); + cl.set(Calendar.MONTH, mon - 1); + // '- 1' because calendar is 0-based for this field, and we are + // 1-based + cl.set(Calendar.YEAR, year); + continue; + } + cl.set(Calendar.MONTH, mon - 1); + // '- 1' because calendar is 0-based for this field, and we are + // 1-based + + year = cl.get(Calendar.YEAR); + t = -1; + + // get year................................................... + st = years.tailSet(year); + if (st != null && st.size() != 0) { + t = year; + year = st.first(); + } else { + return null; // ran out of years... + } + + if (year != t) { + cl.set(Calendar.SECOND, 0); + cl.set(Calendar.MINUTE, 0); + cl.set(Calendar.HOUR_OF_DAY, 0); + cl.set(Calendar.DAY_OF_MONTH, 1); + cl.set(Calendar.MONTH, 0); + // '- 1' because calendar is 0-based for this field, and we are + // 1-based + cl.set(Calendar.YEAR, year); + continue; + } + cl.set(Calendar.YEAR, year); + + gotOne = true; + } // while( !done ) + + return cl.getTime(); + } + + /** + * Advance the calendar to the particular hour paying particular attention + * to daylight saving problems. + * + * @param cal the calendar to operate on + * @param hour the hour to set + */ + protected void setCalendarHour(Calendar cal, int hour) { + cal.set(java.util.Calendar.HOUR_OF_DAY, hour); + if (cal.get(java.util.Calendar.HOUR_OF_DAY) != hour && hour != 24) { + cal.set(java.util.Calendar.HOUR_OF_DAY, hour + 1); + } + } + + /** + * NOT YET IMPLEMENTED: Returns the time before the given time + * that the CronExpression matches. + */ + public Date getTimeBefore(Date endTime) { + // FUTURE_TODO: implement QUARTZ-423 + return null; + } + + /** + * NOT YET IMPLEMENTED: Returns the final time that the + * CronExpression will match. + */ + public Date getFinalFireTime() { + // FUTURE_TODO: implement QUARTZ-423 + return null; + } + + protected boolean isLeapYear(int year) { + return ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)); + } + + protected int getLastDayOfMonth(int monthNum, int year) { + + switch (monthNum) { + case 1: + return 31; + case 2: + return (isLeapYear(year)) ? 29 : 28; + case 3: + return 31; + case 4: + return 30; + case 5: + return 31; + case 6: + return 30; + case 7: + return 31; + case 8: + return 31; + case 9: + return 30; + case 10: + return 31; + case 11: + return 30; + case 12: + return 31; + default: + throw new IllegalArgumentException("Illegal month number: " + + monthNum); + } + } + + + private void readObject(java.io.ObjectInputStream stream) + throws java.io.IOException, ClassNotFoundException { + + stream.defaultReadObject(); + try { + buildExpression(cronExpression); + } catch (Exception ignore) { + } // never happens + } + + @Override + @Deprecated + public Object clone() { + return new CronExpression(this); + } +} + +class ValueSet { + public int value; + + public int pos; +}