TimeUnit (OpenJPA 0.9.7-incubating API) function windowTitle() { parent.document.title="TimeUnit (OpenJPA 0.9.7-incubating API)"; } Overview  Package   Class  Use  Tree  Deprecated  Index  Help   PREV CLASS   NEXT CLASS FRAMES    NO FRAMES     All Classes'); } //-- All Classes SUMMARY: NESTED | FIELD | CONSTR | METHOD DETAIL: FIELD | CONSTR | METHOD org.apache.openjpa.lib.util.concurrent Class TimeUnit java.lang.Object org.apache.openjpa.lib.util.concurrent.TimeUnit All Implemented Interfaces: Serializable public abstract class TimeUnitextends Objectimplements Serializable A TimeUnit represents time durations at a given unit of granularity and provides utility methods to convert across units, and to perform timing and delay operations in these units. A TimeUnit does not maintain time information, but only helps organize and use time representations that may be maintained separately across various contexts. A nanosecond is defined as one thousandth of a microsecond, a microsecond as one thousandth of a millisecond, a millisecond as one thousandth of a second, a minute as sixty seconds, an hour as sixty minutes, and a day as twenty four hours. A TimeUnit is mainly used to inform time-based methods how a given timing parameter should be interpreted. For example, the following code will timeout in 50 milliseconds if the lock is not available: Lock lock = ...; if ( lock.tryLock(50L, TimeUnit.MILLISECONDS) ) ... while this code will timeout in 50 seconds: Lock lock = ...; if ( lock.tryLock(50L, TimeUnit.SECONDS) ) ... Note however, that there is no guarantee that a particular timeout implementation will be able to notice the passage of time at the same granularity as the given TimeUnit. Since: 1.5 Author: Doug Lea See Also:Serialized Form Field Summary static TimeUnit DAYS             static TimeUnit HOURS             static TimeUnit MICROSECONDS             static TimeUnit MILLISECONDS             static TimeUnit MINUTES             static TimeUnit NANOSECONDS             static TimeUnit SECONDS               Method Summary abstract  long convert(long sourceDuration, TimeUnit sourceUnit)           Convert the given time duration in the given unit to this unit.  void sleep(long timeout)           Performs a Thread.sleep using this unit.  void timedJoin(Thread thread, long timeout)           Performs a timed Thread.join using this time unit.  void timedWait(Object obj, long timeout)           Performs a timed Object.wait using this time unit. abstract  long toDays(long duration)           Equivalent to DAYS.convert(duration, this). abstract  long toHours(long duration)           Equivalent to HOURS.convert(duration, this). abstract  long toMicros(long duration)           Equivalent to MICROSECONDS.convert(duration, this). abstract  long toMillis(long duration)           Equivalent to MILLISECONDS.convert(duration, this). abstract  long toMinutes(long duration)           Equivalent to MINUTES.convert(duration, this). abstract  long toNanos(long duration)           Equivalent to NANOSECONDS.convert(duration, this). abstract  long toSeconds(long duration)           Equivalent to SECONDS.convert(duration, this).  String toString()             static TimeUnit[] values()               Methods inherited from class java.lang.Object clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait   Field Detail NANOSECONDS public static final TimeUnit NANOSECONDS MICROSECONDS public static final TimeUnit MICROSECONDS MILLISECONDS public static final TimeUnit MILLISECONDS SECONDS public static final TimeUnit SECONDS MINUTES public static final TimeUnit MINUTES HOURS public static final TimeUnit HOURS DAYS public static final TimeUnit DAYS Method Detail values public static TimeUnit[] values() convert public abstract long convert(long sourceDuration, TimeUnit sourceUnit) Convert the given time duration in the given unit to this unit. Conversions from finer to coarser granularities truncate, so lose precision. For example converting 999 milliseconds to seconds results in 0. Conversions from coarser to finer granularities with arguments that would numerically overflow saturate to Long.MIN_VALUE if negative or Long.MAX_VALUE if positive. For example, to convert 10 minutes to milliseconds, use: TimeUnit.MILLISECONDS.convert(10L, TimeUnit.MINUTES) Parameters:sourceDuration - the time duration in the given sourceUnitsourceUnit - the unit of the sourceDuration argument Returns:the converted duration in this unit, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow. toNanos public abstract long toNanos(long duration) Equivalent to NANOSECONDS.convert(duration, this). Parameters:duration - the duration Returns:the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.See Also:convert(long, org.apache.openjpa.lib.util.concurrent.TimeUnit) toMicros public abstract long toMicros(long duration) Equivalent to MICROSECONDS.convert(duration, this). Parameters:duration - the duration Returns:the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.See Also:convert(long, org.apache.openjpa.lib.util.concurrent.TimeUnit) toMillis public abstract long toMillis(long duration) Equivalent to MILLISECONDS.convert(duration, this). Parameters:duration - the duration Returns:the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.See Also:convert(long, org.apache.openjpa.lib.util.concurrent.TimeUnit) toSeconds public abstract long toSeconds(long duration) Equivalent to SECONDS.convert(duration, this). Parameters:duration - the duration Returns:the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.See Also:convert(long, org.apache.openjpa.lib.util.concurrent.TimeUnit) toMinutes public abstract long toMinutes(long duration) Equivalent to MINUTES.convert(duration, this). Parameters:duration - the duration Returns:the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.Since: 1.6 See Also:convert(long, org.apache.openjpa.lib.util.concurrent.TimeUnit) toHours public abstract long toHours(long duration) Equivalent to HOURS.convert(duration, this). Parameters:duration - the duration Returns:the converted duration, or Long.MIN_VALUE if conversion would negatively overflow, or Long.MAX_VALUE if it would positively overflow.Since: 1.6 See Also:convert(long, org.apache.openjpa.lib.util.concurrent.TimeUnit) toDays public abstract long toDays(long duration) Equivalent to DAYS.convert(duration, this). Parameters:duration - the duration Returns:the converted durationSince: 1.6 See Also:convert(long, org.apache.openjpa.lib.util.concurrent.TimeUnit) timedWait public void timedWait(Object obj, long timeout) throws InterruptedException Performs a timed Object.wait using this time unit. This is a convenience method that converts timeout arguments into the form required by the Object.wait method. For example, you could implement a blocking poll method(see BlockingQueue.poll) using: public synchronized Object poll(long timeout, TimeUnit unit) throws InterruptedException { while (empty) { unit.timedWait(this, timeout); ... } } Parameters:obj - the object to wait ontimeout - the maximum time to wait. If less than or equal to zero, do not wait at all. Throws: InterruptedException - if interrupted while waiting.See Also:Object.wait(long, int) timedJoin public void timedJoin(Thread thread, long timeout) throws InterruptedException Performs a timed Thread.join using this time unit. This is a convenience method that converts time arguments into the form required by the Thread.join method. Parameters:thread - the thread to wait fortimeout - the maximum time to wait. If less than or equal to zero, do not wait at all. Throws: InterruptedException - if interrupted while waiting.See Also:Thread.join(long, int) sleep public void sleep(long timeout) throws InterruptedException Performs a Thread.sleep using this unit. This is a convenience method that converts time arguments into the form required by the Thread.sleep method. Parameters:timeout - the maximum time to sleep. If less than or equal to zero, do not sleep at all. Throws: InterruptedException - if interrupted while sleeping.See Also:Thread.sleep(long) toString public String toString() Overrides:toString in class Object Overview  Package   Class  Use  Tree  Deprecated  Index  Help   PREV CLASS   NEXT CLASS FRAMES    NO FRAMES     All Classes'); } //-- All Classes SUMMARY: NESTED | FIELD | CONSTR | METHOD DETAIL: FIELD | CONSTR | METHOD Copyright © 2006-2007 Apache Software Foundation. All Rights Reserved.