com.sleepycat.je.tree

Class INLongRep

java.lang.Object

com.sleepycat.je.tree.INLongRep

Direct Known Subclasses:

INLongRep.DefaultRep, INLongRep.EmptyRep

public abstract class INLongRep
extends Object

Holds an array of non-negative long values, one for each slot in an IN. Zero is the default value and is returned when no value has been set. The EMPTY_REP is used at first, and is mutated as necessary as values are set. A minimum number of bytes per value is used, based on the largest value passed to set(). Optionally, a sparse rep is used when a value is set for EMPTY_REP. Up to 4 values are stored along with their indexes. When the 5th values is set, the rep is mutated to the default rep. This object calls IN.updateMemorySize to track the memory it uses. EMPTY_REP uses no memory because it is a singleton.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	INLongRep.DefaultRep
static class	INLongRep.EmptyRep Initially empty (all values are zero) but will mutate as needed when non-zero values are passed to set().
static class	INLongRep.SparseRep

Constructor Summary

Constructors

Constructor and Description
INLongRep()

Method Summary

Modifier and Type	Method and Description
abstract INLongRep	clear(IN parent, INLongRep.EmptyRep emptyRep)
abstract INLongRep	compact(IN parent, INLongRep.EmptyRep emptyRep)
abstract INLongRep	copy(int from, int to, int n, IN parent)
abstract long	get(int idx)
abstract long	getMemorySize()
abstract boolean	isEmpty()
abstract INLongRep	resize(int capacity)
abstract INLongRep	set(int idx, long val, IN parent)

Methods inherited from class java.lang.Object

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

Constructor Detail

INLongRep

public INLongRep()

Method Detail

get

public abstract long get(int idx)

set

public abstract INLongRep set(int idx,
                              long val,
                              IN parent)

compact

public abstract INLongRep compact(IN parent,
                                  INLongRep.EmptyRep emptyRep)

clear

public abstract INLongRep clear(IN parent,
                                INLongRep.EmptyRep emptyRep)

isEmpty

public abstract boolean isEmpty()

copy

public abstract INLongRep copy(int from,
                               int to,
                               int n,
                               IN parent)

resize

public abstract INLongRep resize(int capacity)

getMemorySize

public abstract long getMemorySize()