org.apache.lucene.util.packed

Class AppendingLongBuffer

java.lang.Object

org.apache.lucene.util.packed.AppendingLongBuffer

public final class AppendingLongBuffer
extends Object

Utility class to buffer a list of signed longs in memory. This class only supports appending and is optimized for the case where values are close to each other.

NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	AppendingLongBuffer.Iterator A long iterator.

Constructor Summary

Constructors

Constructor and Description
AppendingLongBuffer() Create an AppendingLongBuffer with initialPageCount=16 and pageSize=1024.
AppendingLongBuffer(int initialPageCount, int pageSize)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(long l) Append a value to this buffer.
long	get(long index) Get a value from this buffer.
AppendingLongBuffer.Iterator	iterator() Return an iterator over the values of this buffer.
long	ramBytesUsed() Return the number of bytes used by this instance.
long	size() Get the number of values that have been added to the buffer.

Methods inherited from class java.lang.Object

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

Constructor Detail

AppendingLongBuffer

public AppendingLongBuffer(int initialPageCount,
                   int pageSize)

Parameters:

initialPageCount - the initial number of pages

pageSize - the size of a single page

AppendingLongBuffer

public AppendingLongBuffer()

Create an AppendingLongBuffer with initialPageCount=16 and pageSize=1024.

Method Detail

iterator

public AppendingLongBuffer.Iterator iterator()

Return an iterator over the values of this buffer.

size

public final long size()

Get the number of values that have been added to the buffer.

add

public final void add(long l)

Append a value to this buffer.

get

public final long get(long index)

Get a value from this buffer.

ramBytesUsed

public long ramBytesUsed()

Return the number of bytes used by this instance.