Package org.apache.lucene.util

Class RollingBuffer<T extends RollingBuffer.Resettable>

java.lang.Object

org.apache.lucene.util.RollingBuffer<T>

public abstract class RollingBuffer<T extends RollingBuffer.Resettable>
extends Object

Acts like forever growing T[], but internally uses a circular buffer to reuse instances of T.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	RollingBuffer.Resettable	Implement to reset an instance

Constructor Summary

Constructors

Constructor	Description
RollingBuffer()

Method Summary

Modifier and Type	Method	Description
void	freeBefore(int pos)
T	get(int pos)	Get T instance for this absolute position; this is allowed to be arbitrarily far "in the future" but cannot be before the last freeBefore.
int	getMaxPos()	Returns the maximum position looked up, or -1 if no position has been looked up sinc reset/init.
void	reset()

Methods inherited from class java.lang.Object

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

Constructor Details

RollingBuffer

public RollingBuffer()

Method Details

reset

public void reset()

get

public T get(int pos)

Get T instance for this absolute position; this is allowed to be arbitrarily far "in the future" but cannot be before the last freeBefore.

getMaxPos

public int getMaxPos()

Returns the maximum position looked up, or -1 if no position has been looked up sinc reset/init.

freeBefore

public void freeBefore(int pos)