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## org.treesched
Class ConstrainedSchedule

    java.lang.Object
      org.treesched.AbstractSchedule
          org.treesched.ConstrainedSchedule

All Implemented Interfaces:
  RefineableSchedule, Schedule, java.io.Serializable

Direct Known Subclasses:
  DayOfMonthSchedule, DayOfWeekSchedule, DayOfYearSchedule, MonthSchedule, TimeSchedule

public abstract class ConstrainedSchedule
extends AbstractSchedule

A base class for a Schedule which has a from and a to date.

Author:
  Rob Gordon
See Also:
  Serialized Form

Constructor Summary
`ConstrainedSchedule()`

Method Summary
`abstract java.util.Date` | `getEndDate(java.util.Date now)` For the given time, calculate when this schedule interval should finish.
`abstract java.lang.String` | `getFrom()` Get the from date/time as a String.
`abstract java.util.Date` | `getStartDate(java.util.Date now)` For the given time, calculate when this schedule should start or should have started.
`abstract java.lang.String` | `getTo()` Get the to date/time as a String.
`Interval` | `nextDue(java.util.Date now)` For a given date a schedule will provide the interval this schedule should next be scheduled in.
`abstract void` | `setFrom(java.lang.String from)` Set the from date/time as a String.
`void` | `setOn(java.lang.String on)` Set the on date as a string.
`abstract void` | `setTo(java.lang.String to)` Set the to date/time as a String.
`java.lang.String` | `toString()` Override toString.

Methods inherited from class org.treesched.AbstractSchedule
`addChildSchedule, getChildSchedule, getLimits, reset, setChildSchedule, setLimits`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### ConstrainedSchedule

    public ConstrainedSchedule()

Method Detail

### setFrom

    public abstract void setFrom(java.lang.String from)
                          throws java.text.ParseException

  Set the from date/time as a String.

  Parameters:
    `from` - The from date.
  Throws:
    `java.text.ParseException` - If the String can not be parsed to a date.

### getFrom

    public abstract java.lang.String getFrom()

  Get the from date/time as a String.

  Returns:
    The from date.

### setTo

    public abstract void setTo(java.lang.String to)
                        throws java.text.ParseException

  Set the to date/time as a String.

  Parameters:
    `to` - The to date.
  Throws:
    `java.text.ParseException` - If the String can not be parsed to a date.

### getTo

    public abstract java.lang.String getTo()

  Get the to date/time as a String.

  Returns:
    The to date.

### getStartDate

    public abstract java.util.Date getStartDate(java.util.Date now)

  For the given time, calculate when this schedule should start or should have started.

  Parameters:
    `now` - The date/time now.
  Returns:
    The date/time the scheudle is/was due.

### getEndDate

    public abstract java.util.Date getEndDate(java.util.Date now)

  For the given time, calculate when this schedule interval should finish.

  Parameters:
    `now` - The date/time now.
  Returns:
    The date/time the schedule should finish.

### setOn

    public void setOn(java.lang.String on)
               throws java.text.ParseException

  Set the on date as a string.

  Throws:
    `java.text.ParseException` - If the string isn't a date.

### nextDue

    public Interval nextDue(java.util.Date now)

  Description copied from interface: `Schedule`
  For a given date a schedule will provide the interval this schedule should next be scheduled in.

  If the schedule is never due again for the given date, null is returned.

  Parameters:
    `now` - The date now.
  Returns:
    The next due interval for the schedule.

### toString

    public java.lang.String toString()

  Override toString.

  Returns:
    A description of the schedule.

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