org.mvel2.util

Class SimpleIndexHashMapWrapper<K,V>

java.lang.Object

org.mvel2.util.SimpleIndexHashMapWrapper<K,V>

All Implemented Interfaces:

Map<K,V>

public class SimpleIndexHashMapWrapper<K,V>
extends Object
implements Map<K,V>

As most use-cases of the VariableResolverFactory's rely on Maps, this is meant to implement a simple wrapper which records index positions for use by the optimizing facilities.

This wrapper also ensures that the Map is only additive. You cannot remove an element once it's been added. While this may seem like an odd limitation, it is consistent with the language semantics. (ie. it's not possible to delete a variable at runtime once it's been declared).

Author:

Mike Brock

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
SimpleIndexHashMapWrapper()
SimpleIndexHashMapWrapper(K[] keys)
SimpleIndexHashMapWrapper(K[] keys, int initialCapacity, float load)
SimpleIndexHashMapWrapper(SimpleIndexHashMapWrapper<K,V> wrapper, boolean allocateOnly)

Method Summary

Methods

Modifier and Type	Method and Description
void	addKey(K key)
void	addKey(K key, V value)
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<K,V>>	entrySet()
V	get(Object key)
V	getByIndex(int index)
K	getKeyAtIndex(int index)
int	indexOf(K key)
void	initWithKeys(K[] keys)
boolean	isEmpty()
Set<K>	keySet()
V	put(K key, V value)
void	putAll(Map<? extends K,? extends V> m)
void	putAtIndex(int index, V value)
V	remove(Object key)
int	size()
Collection<V>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

SimpleIndexHashMapWrapper

public SimpleIndexHashMapWrapper()

SimpleIndexHashMapWrapper

public SimpleIndexHashMapWrapper(SimpleIndexHashMapWrapper<K,V> wrapper,
                         boolean allocateOnly)

SimpleIndexHashMapWrapper

public SimpleIndexHashMapWrapper(K[] keys)

SimpleIndexHashMapWrapper

public SimpleIndexHashMapWrapper(K[] keys,
                         int initialCapacity,
                         float load)

Method Detail

initWithKeys

public void initWithKeys(K[] keys)

addKey

public void addKey(K key)

addKey

public void addKey(K key,
          V value)

size

public int size()

Specified by:

size in interface Map<K,V>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<K,V>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<K,V>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<K,V>

get

public V get(Object key)

Specified by:

get in interface Map<K,V>

getByIndex

public V getByIndex(int index)

getKeyAtIndex

public K getKeyAtIndex(int index)

indexOf

public int indexOf(K key)

put

public V put(K key,
    V value)

Specified by:

put in interface Map<K,V>

putAtIndex

public void putAtIndex(int index,
              V value)

remove

public V remove(Object key)

Specified by:

remove in interface Map<K,V>

putAll

public void putAll(Map<? extends K,? extends V> m)

Specified by:

putAll in interface Map<K,V>

clear

public void clear()

Specified by:

clear in interface Map<K,V>

keySet

public Set<K> keySet()

Specified by:

keySet in interface Map<K,V>

values

public Collection<V> values()

Specified by:

values in interface Map<K,V>

entrySet

public Set<Map.Entry<K,V>> entrySet()

Specified by:

entrySet in interface Map<K,V>