Top Description Inners Fields Constructors Methods
com.sun.jfx.incubator.scene.control.richtext

public Class FastCache<T>

extends Object
Class Inheritance
Imports
java.util.Arrays, .HashMap, .Random
A simple cache implementation which provides a cheap invalidation via clear() and a cheap random eviction via evict(). This object must be accessed from the FX application thread, although it does not check.

Nested and Inner Type Summary

Modifier and TypeClass and Description
private static record
FastCache.Entry<V>

Field Summary

Modifier and TypeField and Description
private final HashMap<Integer, T>
data

private final FastCache.Entry<T>[]
linear

private static final Random
random

private int
size

Constructor Summary

AccessConstructor and Description
public
FastCache(int capacity)

Method Summary

Modifier and TypeMethod and Description
public void
add(int index, T cell)

Adds a new cell to the cache.

public int
capacity()

public void
clear()

protected int
evict()

returns an index in the linear array of the cell that has been evicted

public T
get(int row)

public int
size()

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Field Detail

databack to summary
private final HashMap<Integer, T> data
linearback to summary
private final FastCache.Entry<T>[] linear
randomback to summary
private static final Random random
sizeback to summary
private int size

Constructor Detail

FastCacheback to summary
public FastCache(int capacity)

Method Detail

addback to summary
public void add(int index, T cell)

Adds a new cell to the cache. When the cache is full, this method evicts a random cell from the cache first.

Note

this method does not check whether another cell for the given row is present, so this call must be preceded by a get(int).

capacityback to summary
public int capacity()
clearback to summary
public void clear()
evictback to summary
protected int evict()

returns an index in the linear array of the cell that has been evicted

getback to summary
public T get(int row)
sizeback to summary
public int size()
com.sun.jfx.incubator.scene.control.richtext back to summary

private final Record FastCache.Entry<V>

extends Record
Class Inheritance
Record Components
index:int 
cell:V 

Field Summary

Modifier and TypeField and Description
private final V
cell

Record Component accessed by cell().

private final int
index

Record Component accessed by index().

Constructor Summary

AccessConstructor and Description
private
Entry(int index, V cell)

Method Summary

Modifier and TypeMethod and Description
public V
cell()

Record Component getter of cell.

public final boolean
equals(Object o)

Implements abstract java.lang.Record.equals.

Indicates whether some other object is "equal to" this one.

public final int
hashCode()

Implements abstract java.lang.Record.hashCode.

Returns a hash code value for the record.

public int
index()

Record Component getter of index.

public final String
toString()

Implements abstract java.lang.Record.toString.

Returns a string representation of the record.

Field Detail

cellback to summary
private final V cell

Record Component accessed by cell().

indexback to summary
private final int index

Record Component accessed by index().

Constructor Detail

Entryback to summary
private Entry(int index, V cell)

Method Detail

cellback to summary
public V cell()

Record Component getter of cell.

equalsback to summary
public final boolean equals(Object o)

Implements abstract java.lang.Record.equals.

Doc from java.lang.Record.equals.

Indicates whether some other object is "equal to" this one. In addition to the general contract of Object.equals, record classes must further obey the invariant that when a record instance is "copied" by passing the result of the record component accessor methods to the canonical constructor, as follows: 

    R copy = new R(r.c1(), r.c2(), ..., r.cn());
then it must be the case that r.equals(copy).
hashCodeback to summary
public final int hashCode()

Implements abstract java.lang.Record.hashCode.

Doc from java.lang.Record.hashCode.

Returns a hash code value for the record. Obeys the general contract of Object.hashCode. For records, hashing behavior is constrained by the refined contract of Record.equals, so that any two records created from the same components must have the same hash code.

indexback to summary
public int index()

Record Component getter of index.

toStringback to summary
public final String toString()

Implements abstract java.lang.Record.toString.

Doc from java.lang.Record.toString.

Returns a string representation of the record. In accordance with the general contract of Object#toString(), the toString method returns a string that "textually represents" this record. The result should be a concise but informative representation that is easy for a person to read.

In addition to this general contract, record classes must further participate in the invariant that any two records which are equal must produce equal strings. This invariant is necessarily relaxed in the rare case where corresponding equal component values might fail to produce equal strings for themselves.