jodd.util.idgen
Class SimpleIdGenerator

java.lang.Object
  jodd.util.idgen.SimpleIdGenerator

public class SimpleIdGenerator
extends java.lang.Object

Simple synchronized int ids sequence generator. It takes the positive sequence range (boundaries are included). Optionally, it supports cycling, when counter reaches the max value. Otherwise an exception is thrown.

See Also:

SimpleLongIdGenerator

Field Summary

protected boolean	cycle
protected int	initialValue
protected int	maxValue
protected int	value

Constructor Summary

SimpleIdGenerator()
Creates a new default cycled id generator.

SimpleIdGenerator(int initialValue)
Creates a new cycled id generator with specified initial value.

SimpleIdGenerator(int initialValue, int maxValue)
Creates a new cycled id generator with specified range.

SimpleIdGenerator(int initialValue, int maxValue, boolean cycle)
Creates a new id generator with specified range and cycling flag.

Method Summary

int	next() Returns the next value from the sequence.

Methods inherited from class java.lang.Object

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

Field Detail

value

protected volatile int value

initialValue

protected int initialValue

maxValue

protected int maxValue

cycle

protected boolean cycle

Constructor Detail

SimpleIdGenerator

public SimpleIdGenerator()

Creates a new default cycled id generator. Starts from 1 and counts up to max int value.

SimpleIdGenerator

public SimpleIdGenerator(int initialValue)

Creates a new cycled id generator with specified initial value.

SimpleIdGenerator

public SimpleIdGenerator(int initialValue,
                         int maxValue)

Creates a new cycled id generator with specified range.

SimpleIdGenerator

public SimpleIdGenerator(int initialValue,
                         int maxValue,
                         boolean cycle)

Creates a new id generator with specified range and cycling flag.

Method Detail

next

public int next()

Returns the next value from the sequence. Thread-safe.