com.inductiveautomation.xopc.driver.util

Class Sequence

java.lang.Object

com.inductiveautomation.xopc.driver.util.Sequence

All Implemented Interfaces:

java.io.Serializable

public class Sequence
extends java.lang.Object
implements java.io.Serializable

Provides a thread-safe atomically increasing sequence of integers. The sequence wraps back to its starting point if increased beyond its maximum

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected int	high
protected int	low
protected int	value

Constructor Summary

Constructors

Constructor and Description
Sequence() Creates a sequence with the interval [1, Integere.MAX_VALUE] (inclusive)
Sequence(int low, int high)

Method Summary

Modifier and Type	Method and Description
int	next() Returns the next value of the sequence.
int	value() Returns the current value of the sequence (the value that will be returned by next()).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

low

protected int low

high

protected int high

value

protected int value

Constructor Detail

Sequence

public Sequence()

Creates a sequence with the interval [1, Integere.MAX_VALUE] (inclusive)

Sequence

public Sequence(int low,
                int high)

Method Detail

next

public int next()

Returns the next value of the sequence. This will start at low initially.

value

public int value()

Returns the current value of the sequence (the value that will be returned by next()). Does not modify the sequence.