org.apache.lucene.util

Class Counter

java.lang.Object

org.apache.lucene.util.Counter

Direct Known Subclasses:

Counter.AtomicCounter, Counter.SerialCounter

public abstract class Counter
extends java.lang.Object

Simple counter class

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	Counter.AtomicCounter
private static class	Counter.SerialCounter

Constructor Summary

Constructors

Constructor and Description
Counter()

Method Summary

Modifier and Type	Method and Description
abstract long	addAndGet(long delta) Adds the given delta to the counters current value
abstract long	get() Returns the counters current value
static Counter	newCounter() Returns a new counter.
static Counter	newCounter(boolean threadSafe) Returns a new counter.

Methods inherited from class java.lang.Object

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

Constructor Detail

Counter

public Counter()

Method Detail

addAndGet

public abstract long addAndGet(long delta)

Adds the given delta to the counters current value

Parameters:

delta - the delta to add

Returns:

the counters updated value

get

public abstract long get()

Returns the counters current value

Returns:

the counters current value

newCounter

public static Counter newCounter()

Returns a new counter. The returned counter is not thread-safe.

newCounter

public static Counter newCounter(boolean threadSafe)

Returns a new counter.

Parameters:

threadSafe - true if the returned counter can be used by multiple threads concurrently.

Returns:

a new counter.