com.goldencode.p2j.util

Class ScopedDictionary.Node<K,V>

java.lang.Object

com.goldencode.p2j.util.ScopedDictionary.Node<K,V>

All Implemented Interfaces:

java.lang.Cloneable

Enclosing class:

ScopedDictionary<K,V>

protected static class ScopedDictionary.Node<K,V>
extends java.lang.Object
implements java.lang.Cloneable

Represents complex items on the stack of scopes. Every item is made of a dictionary and a user-specific object.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<K,V>	dictionary Represents an instance of dictionary.
private java.lang.Object	extra Stores a user supplied object associated with the dictionary.
private boolean	identityKeys Flag indicating if the dictionary's keys can use the identity hash code.
private java.util.function.Function<java.lang.Integer,java.util.Map<K,V>>	supplyHashMap Points to a generator function that supplies a new HashMap.
private java.util.function.Function<java.lang.Integer,java.util.Map<K,V>>	supplyIdentityHashMap Points to a generator function that supplies a new IdentityHashMap.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Node(java.lang.Object extra, boolean identityKeys, java.util.function.Function<java.lang.Integer,java.util.Map<K,V>> supplyIdentityHashMap, java.util.function.Function<java.lang.Integer,java.util.Map<K,V>> supplyHashMap) The only constructor.

Method Summary

Modifier and Type	Method and Description
protected ScopedDictionary.Node<K,V>	clone() Clone this instance.
java.util.Map<K,V>	getDictionary(boolean create) Accesses the dictionary at this node.
java.lang.Object	getExtra() Accesses the user supplied object at this node.
void	setExtra(java.lang.Object extra) Replaces the user supplied object at this node.

Methods inherited from class java.lang.Object

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

Field Detail

dictionary

private java.util.Map<K,V> dictionary

Represents an instance of dictionary.

extra

private java.lang.Object extra

Stores a user supplied object associated with the dictionary.

identityKeys

private final boolean identityKeys

Flag indicating if the dictionary's keys can use the identity hash code.

supplyIdentityHashMap

private java.util.function.Function<java.lang.Integer,java.util.Map<K,V>> supplyIdentityHashMap

Points to a generator function that supplies a new IdentityHashMap.

supplyHashMap

private java.util.function.Function<java.lang.Integer,java.util.Map<K,V>> supplyHashMap

Points to a generator function that supplies a new HashMap.

Constructor Detail

Node

private Node(java.lang.Object extra,
             boolean identityKeys,
             java.util.function.Function<java.lang.Integer,java.util.Map<K,V>> supplyIdentityHashMap,
             java.util.function.Function<java.lang.Integer,java.util.Map<K,V>> supplyHashMap)

The only constructor.

Parameters:

extra - Any object that will be associated with this node.

identityKeys - When true, the dictionary will be an IdentityHashMap.

supplyIdentityHashMap - Points to a generator function that supplies a new IdentityHashMap.

supplyHashMap - Points to a generator function that supplies a new HashMap.

Method Detail

clone

protected ScopedDictionary.Node<K,V> clone()

Clone this instance.

Overrides:

clone in class java.lang.Object

Returns:

A copy of this instance.

getDictionary

public java.util.Map<K,V> getDictionary(boolean create)

Accesses the dictionary at this node. If no dictionary is associated with this node, one can be created optionally. Otherwise, an empty, immutable map is returned.

Parameters:

create - true to create a dictionary for this node if one does not already exist; false to have null returned if one does not already exist.

Returns:

Map object associated with this node, or null if there is no map object associated with this node and 'create' flag is false.

getExtra

public java.lang.Object getExtra()

Accesses the user supplied object at this node.

Returns:

Object associated with this node.

setExtra

public void setExtra(java.lang.Object extra)

Replaces the user supplied object at this node.

Parameters:

extra - Any object that will be associated with this node.