| // 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.apache.tapestry5.ioc.internal.services.cron; |
| |
| import java.io.Serializable; |
| import java.text.ParseException; |
| import java.util.*; |
| |
| /** |
| * 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: |
| * |
| * <table cellspacing="8"> |
| * <tr> |
| * <th align="left">Field Name</th> |
| * <th align="left"> </th> |
| * <th align="left">Allowed Values</th> |
| * <th align="left">Allowed Special Characters</th> |
| * </tr> |
| * <tr> |
| * <td align="left"><code>Seconds</code></td> |
| * <td align="left"> </td> |
| * <td align="left"><code>0-59</code></td> |
| * <td align="left"><code>, - * /</code></td> |
| * </tr> |
| * <tr> |
| * <td align="left"><code>Minutes</code></td> |
| * <td align="left"> </td> |
| * <td align="left"><code>0-59</code></td> |
| * <td align="left"><code>, - * /</code></td> |
| * </tr> |
| * <tr> |
| * <td align="left"><code>Hours</code></td> |
| * <td align="left"> </td> |
| * <td align="left"><code>0-23</code></td> |
| * <td align="left"><code>, - * /</code></td> |
| * </tr> |
| * <tr> |
| * <td align="left"><code>Day-of-month</code></td> |
| * <td align="left"> </td> |
| * <td align="left"><code>1-31</code></td> |
| * <td align="left"><code>, - * ? / L W</code></td> |
| * </tr> |
| * <tr> |
| * <td align="left"><code>Month</code></td> |
| * <td align="left"> </td> |
| * <td align="left"><code>1-12 or JAN-DEC</code></td> |
| * <td align="left"><code>, - * /</code></td> |
| * </tr> |
| * <tr> |
| * <td align="left"><code>Day-of-Week</code></td> |
| * <td align="left"> </td> |
| * <td align="left"><code>1-7 or SUN-SAT</code></td> |
| * <td align="left"><code>, - * ? / L #</code></td> |
| * </tr> |
| * <tr> |
| * <td align="left"><code>Year (Optional)</code></td> |
| * <td align="left"> </td> |
| * <td align="left"><code>empty, 1970-2199</code></td> |
| * <td align="left"><code>, - * /</code></td> |
| * </tr> |
| * <caption>Cron Expressions</caption> |
| * </table> |
| * |
| * 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. <i>When using the 'L' option, it is important not to |
| * specify lists, or ranges of values, as you'll get confusing/unexpected results.</i> |
| * |
| * 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 'C' character is allowed for the day-of-month and day-of-week fields. |
| * This character is short-hand for "calendar". This means values are |
| * calculated against the associated calendar, if any. If no calendar is |
| * associated, then it is equivalent to having an all-inclusive calendar. A |
| * value of "5C" in the day-of-month field means "the first day included by the |
| * calendar on or after the 5th". A value of "1C" in the day-of-week field |
| * means "the first day included by the calendar on or after Sunday".--> |
| * |
| * The legal characters and the names of months and days of the week are not |
| * case sensitive. |
| * |
| * |
| * <b>NOTES:</b> |
| * <ul> |
| * <li>Support for specifying both a day-of-week and a day-of-month value is |
| * not complete (you'll need to use the '?' character in one of these fields). |
| * </li> |
| * <li>Overflowing ranges is supported - that is, having a larger number on |
| * the left hand side than the right. You might do 22-2 to catch 10 o'clock |
| * at night until 2 o'clock in the morning, or you might have NOV-FEB. It is |
| * very important to note that overuse of overflowing ranges creates ranges |
| * that don't make sense and no effort has been made to determine which |
| * interpretation CronExpression chooses. An example would be |
| * "0 0 14-6 ? * FRI-MON". </li> |
| * </ul> |
| * |
| * |
| * @author Sharada Jambula, James House |
| * @author Contributions from Mads Henderson |
| * @author Refactoring from CronTrigger to CronExpression by Aaron Craven |
| */ |
| public class CronExpression implements Serializable |
| { |
| |
| 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 = Integer.valueOf(ALL_SPEC_INT); |
| protected static final Integer NO_SPEC = Integer.valueOf(NO_SPEC_INT); |
| |
| protected static final Map monthMap = new HashMap(20); |
| protected static final Map dayMap = new HashMap(60); |
| |
| static |
| { |
| monthMap.put("JAN", Integer.valueOf(0)); |
| monthMap.put("FEB", Integer.valueOf(1)); |
| monthMap.put("MAR", Integer.valueOf(2)); |
| monthMap.put("APR", Integer.valueOf(3)); |
| monthMap.put("MAY", Integer.valueOf(4)); |
| monthMap.put("JUN", Integer.valueOf(5)); |
| monthMap.put("JUL", Integer.valueOf(6)); |
| monthMap.put("AUG", Integer.valueOf(7)); |
| monthMap.put("SEP", Integer.valueOf(8)); |
| monthMap.put("OCT", Integer.valueOf(9)); |
| monthMap.put("NOV", Integer.valueOf(10)); |
| monthMap.put("DEC", Integer.valueOf(11)); |
| |
| dayMap.put("SUN", Integer.valueOf(1)); |
| dayMap.put("MON", Integer.valueOf(2)); |
| dayMap.put("TUE", Integer.valueOf(3)); |
| dayMap.put("WED", Integer.valueOf(4)); |
| dayMap.put("THU", Integer.valueOf(5)); |
| dayMap.put("FRI", Integer.valueOf(6)); |
| dayMap.put("SAT", Integer.valueOf(7)); |
| } |
| |
| private String cronExpression = null; |
| private TimeZone timeZone = null; |
| protected transient TreeSet<Integer> seconds; |
| protected transient TreeSet<Integer> minutes; |
| protected transient TreeSet<Integer> hours; |
| protected transient TreeSet<Integer> daysOfMonth; |
| protected transient TreeSet<Integer> months; |
| protected transient TreeSet<Integer> daysOfWeek; |
| protected transient TreeSet<Integer> 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; |
| |
| public static final int MAX_YEAR = Calendar.getInstance().get(Calendar.YEAR) + 100; |
| |
| /** |
| * Constructs a new <CODE>CronExpression</CODE> 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 |
| * <CODE>CronExpression</CODE> |
| */ |
| 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); |
| } |
| |
| /** |
| * 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 <I>after</I> 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 <I>after</I> the given date/time which does |
| * <I>not</I> 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 = null; |
| |
| //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 <code>CronExpression</code> |
| * will be resolved. |
| * @return the time zone, not null |
| */ |
| public TimeZone getTimeZone() |
| { |
| if (timeZone == null) |
| { |
| timeZone = TimeZone.getDefault(); |
| } |
| |
| return timeZone; |
| } |
| |
| /** |
| * Sets the time zone for which this <code>CronExpression</code> |
| * will be resolved. |
| * @param timeZone the time zone, or null |
| */ |
| public void setTimeZone(TimeZone timeZone) |
| { |
| this.timeZone = timeZone; |
| } |
| |
| /** |
| * @return a string representation of the <CODE>CronExpression</CODE> |
| */ |
| @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<Integer>(); |
| } |
| if (minutes == null) |
| { |
| minutes = new TreeSet<Integer>(); |
| } |
| if (hours == null) |
| { |
| hours = new TreeSet<Integer>(); |
| } |
| if (daysOfMonth == null) |
| { |
| daysOfMonth = new TreeSet<Integer>(); |
| } |
| if (months == null) |
| { |
| months = new TreeSet<Integer>(); |
| } |
| if (daysOfWeek == null) |
| { |
| daysOfWeek = new TreeSet<Integer>(); |
| } |
| if (years == null) |
| { |
| years = new TreeSet<Integer>(); |
| } |
| |
| 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.indexOf(",") >= 0) |
| { |
| 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.indexOf(",") >= 0) |
| { |
| 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 imlemented.", -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) |
| { |
| // skip |
| } else if (dayOfWSpec && !dayOfMSpec) |
| { |
| // skip |
| } else |
| { |
| 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 = ((Integer) daysOfMonth.last()).intValue(); |
| 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(Integer.valueOf(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(Integer.valueOf(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(Integer.valueOf(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); |
| int v1 = vs.value; |
| end = v1; |
| 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; |
| } |
| |
| 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<Integer> 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(Integer.valueOf(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(Integer.valueOf(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(Integer.valueOf(i2)); |
| } |
| } |
| } |
| |
| protected TreeSet<Integer> 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 = (Integer) monthMap.get(s); |
| |
| if (integer == null) |
| { |
| return -1; |
| } |
| |
| return integer.intValue(); |
| } |
| |
| protected int getDayOfWeekNumber(String s) |
| { |
| Integer integer = (Integer) dayMap.get(s); |
| |
| if (integer == null) |
| { |
| return -1; |
| } |
| |
| return integer.intValue(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////// |
| // |
| // 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(Integer.valueOf(sec)); |
| if (st != null && st.size() != 0) |
| { |
| sec = ((Integer) st.first()).intValue(); |
| } else |
| { |
| sec = ((Integer) seconds.first()).intValue(); |
| 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(Integer.valueOf(min)); |
| if (st != null && st.size() != 0) |
| { |
| t = min; |
| min = ((Integer) st.first()).intValue(); |
| } else |
| { |
| min = ((Integer) minutes.first()).intValue(); |
| 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(Integer.valueOf(hr)); |
| if (st != null && st.size() != 0) |
| { |
| t = hr; |
| hr = ((Integer) st.first()).intValue(); |
| } else |
| { |
| hr = ((Integer) hours.first()).intValue(); |
| 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(Integer.valueOf(day)); |
| if (lastdayOfMonth) |
| { |
| if (!nearestWeekday) |
| { |
| t = day; |
| day = getLastDayOfMonth(mon, cl.get(Calendar.YEAR)); |
| day -= lastdayOffset; |
| } 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 = ((Integer) daysOfMonth.first()).intValue(); |
| |
| 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 = ((Integer) daysOfMonth.first()).intValue(); |
| mon++; |
| } |
| } else if (st != null && st.size() != 0) |
| { |
| t = day; |
| day = ((Integer) st.first()).intValue(); |
| // 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 = ((Integer) daysOfMonth.first()).intValue(); |
| mon++; |
| } |
| } else |
| { |
| day = ((Integer) daysOfMonth.first()).intValue(); |
| 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 = ((Integer) daysOfWeek.first()).intValue(); // 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 = ((Integer) daysOfWeek.first()).intValue(); // 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 = ((Integer) daysOfWeek.first()).intValue(); // desired |
| // d-o-w |
| st = daysOfWeek.tailSet(Integer.valueOf(cDow)); |
| if (st != null && st.size() > 0) |
| { |
| dow = ((Integer) st.first()).intValue(); |
| } |
| |
| 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."); |
| // TODO: |
| } |
| 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(Integer.valueOf(mon)); |
| if (st != null && st.size() != 0) |
| { |
| t = mon; |
| mon = ((Integer) st.first()).intValue(); |
| } else |
| { |
| mon = ((Integer) months.first()).intValue(); |
| 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(Integer.valueOf(year)); |
| if (st != null && st.size() != 0) |
| { |
| t = year; |
| year = ((Integer) st.first()).intValue(); |
| } 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 change |
| * @param hour the hour of day, 0..23, not null |
| */ |
| 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 <code>CronExpression</code> matches. |
| * @param endTime the ending time, or null |
| */ |
| public Date getTimeBefore(Date endTime) |
| { |
| // TODO: implement QUARTZ-423 |
| return null; |
| } |
| |
| /** |
| * NOT YET IMPLEMENTED: Returns the final time that the |
| * <code>CronExpression</code> will match. |
| * @return the final time, or null |
| */ |
| public Date getFinalFireTime() |
| { |
| // 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); |
| } |
| } |
| } |
| |
| class ValueSet |
| { |
| public int value; |
| |
| public int pos; |
| } |