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Java Source Code / Java Documentation » Library » Apache commons betwixt 0.8 src » org.apache.commons.betwixt.io.id

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.apache.commons.betwixt.io.id .AbstractIDGenerator

org.apache.commons.betwixt.io.id .RandomIDGenerator

RandomIDGenerator

final public class RandomIDGenerator extends AbstractIDGenerator (Code)

Generates ID's at random. The random number source is java.util.Random.

Random ID's are very useful if you're inserting elements created by Betwixt into a stream with existing elements. Using random ID's should reduce the danger of collision with existing element ID's.

This class can generate positive-only ids (the default) or it can generate a mix of negative and postive ones. This behaviour can be set by RandomIDGenerator.setPositiveIds or by using the RandomIDGenerator.RandomIDGenerator(boolean onlyPositiveIds) constructor.

author:
Robert Burrell Donkin
version:
$Revision: 438373 $

Constructor Summary
public	RandomIDGenerator() Constructor sets the `PositiveIds` property to `true`.
public	RandomIDGenerator(boolean onlyPositiveIds) Constructor sets `PositiveIds` property.

Method Summary
public boolean	getPositiveIds()
public String	nextIdImpl()
public void	setPositiveIds(boolean onlyPositiveIds)

Constructor Detail

RandomIDGenerator
public RandomIDGenerator()(Code)
	Constructor sets the `PositiveIds` property to `true`.

RandomIDGenerator
public RandomIDGenerator(boolean onlyPositiveIds)(Code)
	Constructor sets `PositiveIds` property. Parameters: onlyPositiveIds - set `PositiveIds` property to this value

Method Detail

getPositiveIds
public boolean getPositiveIds()(Code)
	Gets whether only positive `ID`'s should be generated whether only positive IDs should be generated

nextIdImpl

public String nextIdImpl()(Code)

Generates a random ID.

If the PositiveIds property is true, then this method will recursively call itself if the random ID is less than zero.

a random integer (converted to a string)

setPositiveIds
public void setPositiveIds(boolean onlyPositiveIds)(Code)
	Sets whether only positive `ID`'s should be generated Parameters: onlyPositiveIds - pass true if only positive IDs should be generated

Methods inherited from org.apache.commons.betwixt.io.id.AbstractIDGenerator

final public String getLastId()(Code)(Java Doc)
final public String nextId()(Code)(Java Doc)
abstract protected String nextIdImpl()(Code)(Java Doc)

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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