ClassMap

java.lang.Object
- org.bson.util.ClassMap<T>

All Implemented Interfaces:

java.util.Map<java.lang.Class,T>
```
public class ClassMap<T>
extends java.lang.Object
implements java.util.Map<java.lang.Class,T>
```
Maps Class objects to values. A ClassMap is different from a regular Map in that get(c) does not only look to see if 'c' is a key in the Map, but also walks the up superclass and interface graph of 'c' to find matches. Derived matches of this sort are then "cached" in the registry so that matches are faster on future gets. This is a very useful class for Class based registries. Example: ClassMap m = new ClassMap(); m.put(Animal.class, "Animal"); m.put(Fox.class, "Fox"); m.Fox.class) --> "Fox" m.get(Dog.class) --> "Animal" (assuming Dog.class < Animal.class)

Nested Class Summary
- Nested classes/interfaces inherited from interface java.util.Map
  java.util.Map.Entry<K,V>

Constructor Summary

Constructors
Constructor and Description

ClassMap()

Constructors
Constructor and Description
`ClassMap()`

Method Summary

Methods
Modifier and Type	Method and Description
`protected boolean`	`cacheContainsKey(java.lang.Object key)` cacheContainsKey
`void`	`clear()` clear
`boolean`	`containsKey(java.lang.Object key)` containsKey
`boolean`	`containsValue(java.lang.Object object)` containsValue
`java.util.Set<java.util.Map.Entry<java.lang.Class,T>>`	`entrySet()` entrySet
`boolean`	`equals(java.lang.Object object)` equals
`T`	`get(java.lang.Object key)` get
`static java.util.List<java.lang.Class>`	`getAncestry(java.lang.Class c)` getAncestry Walks superclass and interface graph, superclasses first, then interfaces, to compute an ancestry list.
`protected java.util.Map<java.lang.Class,T>`	`getCache()` cache
`protected java.util.Map<java.lang.Class,T>`	`getInternalMap()` internalMap
`int`	`hashCode()` hashCode
`protected void`	`initCache()` initCache
`boolean`	`isEmpty()` isEmpty
`java.util.Set<java.lang.Class>`	`keySet()` keySet
`T`	`put(java.lang.Class key, T value)` put
`void`	`putAll(java.util.Map map)` putAll
`T`	`remove(java.lang.Object object)` remove
`int`	`size()` size
`java.lang.String`	`toString()` toString
`java.util.Collection<T>`	`values()` values

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - ClassMap
```
public ClassMap()
```
- Method Detail
  - getInternalMap
```
protected java.util.Map<java.lang.Class,T> getInternalMap()
```
    internalMap
  - getCache
```
protected java.util.Map<java.lang.Class,T> getCache()
```
    cache
  - size
```
public int size()
```
    size
    
    Specified by:
    
    size in interface java.util.Map<java.lang.Class,T>
  - isEmpty
```
public boolean isEmpty()
```
    isEmpty
    
    Specified by:
    
    isEmpty in interface java.util.Map<java.lang.Class,T>
  - containsKey
```
public boolean containsKey(java.lang.Object key)
```
    containsKey
    
    Specified by:
    
    containsKey in interface java.util.Map<java.lang.Class,T>
  - cacheContainsKey
```
protected boolean cacheContainsKey(java.lang.Object key)
```
    cacheContainsKey
  - containsValue
```
public boolean containsValue(java.lang.Object object)
```
    containsValue
    
    Specified by:
    
    containsValue in interface java.util.Map<java.lang.Class,T>
  - get
```
public T get(java.lang.Object key)
```
    get
    
    Specified by:
    
    get in interface java.util.Map<java.lang.Class,T>
  - put
```
public T put(java.lang.Class key,
    T value)
```
    put
    
    Specified by:
    
    put in interface java.util.Map<java.lang.Class,T>
  - remove
```
public T remove(java.lang.Object object)
```
    remove
    
    Specified by:
    
    remove in interface java.util.Map<java.lang.Class,T>
  - putAll
```
public void putAll(java.util.Map map)
```
    putAll
    
    Specified by:
    
    putAll in interface java.util.Map<java.lang.Class,T>
  - clear
```
public void clear()
```
    clear
    
    Specified by:
    
    clear in interface java.util.Map<java.lang.Class,T>
  - keySet
```
public java.util.Set<java.lang.Class> keySet()
```
    keySet
    
    Specified by:
    
    keySet in interface java.util.Map<java.lang.Class,T>
  - values
```
public java.util.Collection<T> values()
```
    values
    
    Specified by:
    
    values in interface java.util.Map<java.lang.Class,T>
  - entrySet
```
public java.util.Set<java.util.Map.Entry<java.lang.Class,T>> entrySet()
```
    entrySet
    
    Specified by:
    
    entrySet in interface java.util.Map<java.lang.Class,T>
  - equals
```
public boolean equals(java.lang.Object object)
```
    equals
    
    Specified by:
    
    equals in interface java.util.Map<java.lang.Class,T>
    
    Overrides:
    
    equals in class java.lang.Object
  - hashCode
```
public int hashCode()
```
    hashCode
    
    Specified by:
    
    hashCode in interface java.util.Map<java.lang.Class,T>
    
    Overrides:
    
    hashCode in class java.lang.Object
  - initCache
```
protected void initCache()
```
    initCache
  - toString
```
public java.lang.String toString()
```
    toString
    
    Overrides:
    
    toString in class java.lang.Object
  - getAncestry
```
public static java.util.List<java.lang.Class> getAncestry(java.lang.Class c)
```
    getAncestry Walks superclass and interface graph, superclasses first, then interfaces, to compute an ancestry list. Supertypes are visited left to right. Duplicates are removed such that no Class will appear in the list before one of its subtypes. Does not need to be synchronized, races are harmless as the Class graph does not change at runtime.

Class ClassMap<T>

Nested Class Summary

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

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

ClassMap

Method Detail

getInternalMap

getCache

size

isEmpty

containsKey

cacheContainsKey

containsValue

get

put

remove

putAll

clear

keySet

values

entrySet

equals

hashCode

initCache

toString

getAncestry