org.josef.util

Class UniqueLongGenerator

java.lang.Object

org.josef.util.UniqueLongGenerator

public final class UniqueLongGenerator
extends Object

Class to generate unique long values within the lifetime of this constructed class.
An attempt is made to generate uniqueness lasting more than a single lifetime (by starting at a random number), but no guarantees can be given.
Usage:

 final UniqueLongGenerator uniqueLongGenerator = UniqueLongGenerator.getInstance();
 long sequence = uniqueLongGenerator.getUniqueLong();

Note: The initial value is guaranteed to be positive. It is also guaranteed that you will get at least a million positive values.

Version:

1.0 $Revision: 5813 $

Author:

rens.van.leeuwen@leanapps.com, kees.schotanus@leanapps.com

See Also:

SequentialIdGenerator

Method Summary

Modifier and Type	Method and Description
static UniqueLongGenerator	getInstance() Returns the instance of the UniqueLongGenerator class.
Long	getUniqueLong() Gets the next unique Long object.
long	getUniqueLongValue() Gets the next unique long value.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static UniqueLongGenerator getInstance()

Returns the instance of the UniqueLongGenerator class.

Returns:

The instance of the UniqueLongGenerator class.

getUniqueLong

public Long getUniqueLong()

Gets the next unique Long object.

Returns:

The next unique Long object.

getUniqueLongValue

public long getUniqueLongValue()

Gets the next unique long value.

Returns:

The next unique long value.