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java.lang.Objectnet.sf.jabb.util.thread.Sequencer
net.sf.jabb.util.thread.RangedSequencer
public class RangedSequencer
It generates sequence of incremental numbers, within a range that can be specified,
without repeating or missing of any number.
序列值生成器,保证不重复渐增,支持最大最小值的范围设定。
It is multi-thread safe, and has high performance.
它是线程安全的,而且性能高。
| Field Summary | |
|---|---|
protected long |
loopSpot
|
protected long |
offset
|
protected long |
range
|
| Fields inherited from class net.sf.jabb.util.thread.Sequencer |
|---|
currentValue |
| Constructor Summary | |
|---|---|
RangedSequencer()
Constructs an instance with a range of [0, Long.MAX_VALUE-1] and 0 as the initial number. 创建一个实例,指定初始值和最小值都是0,最大值是Long.MAX_VALUE-1。 |
|
RangedSequencer(long init)
Constructs an instance with a range of [0, Long.MAX_VALUE-1] and specified initial number. 创建一个实例,指定初始值。最小值是0,最大值是Long.MAX_VALU-1。 |
|
RangedSequencer(long min,
long max)
Constructs an instance, with specified range, and use the low boundary as initial number. 创建一个实例,指定最小、最大值,初始值就是最小值。 |
|
RangedSequencer(long min,
long max,
long init)
Constructs an instance, with specified range and initial number. 创建一个实例,指定最小、最大、初始值。 |
|
| Method Summary | |
|---|---|
long |
next()
Get the next number in sequence. 获得下一个序列值。 |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected long offset
protected long range
protected long loopSpot
| Constructor Detail |
|---|
public RangedSequencer(long min,
long max,
long init)
min - 最小值max - 最大值init - 初始值
public RangedSequencer(long min,
long max)
min - 最小值max - 最大值public RangedSequencer(long init)
init - 初始值public RangedSequencer()
| Method Detail |
|---|
public long next()
next in class Sequencer
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