Package ca.uhn.fhir.rest.api.server

Class UserDataMap

java.lang.Object

ca.uhn.fhir.rest.api.server.UserDataMap

All Implemented Interfaces:

Map<Object,Object>

public class UserDataMap
extends Object
implements Map<Object,Object>

RequestDetails.getUserData() used a HashMap previously but that is not thread-safe. It's not possible to simply replace HashMap with ConcurrentHashMap in RequestDetails since null values work differently. This class is a thin wrapper around ConcurrentHashMap that preserves the expected null value behaviour on get. Note that contains() and size() do behave differently. See UserDataMapTest for details. We could use Collections.synchronizedMap to achieve the required thread-safety, but ConcurrentHashMap has better performance characteristics.

Nested Class Summary

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor	Description
UserDataMap()

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<Object,Object>>	entrySet()
boolean	equals(Object o)
Object	get(Object key)
int	hashCode()
boolean	isEmpty()
Set<Object>	keySet()
Object	put(Object key, Object value)
void	putAll(Map<?,?> m)
Object	remove(Object key)
int	size()
Collection<Object>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Details

UserDataMap

public UserDataMap()

Method Details

size

public int size()

Specified by:

size in interface Map<Object,Object>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Object,Object>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<Object,Object>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<Object,Object>

get

public Object get(Object key)

Specified by:

get in interface Map<Object,Object>

put

public Object put(Object key,
 Object value)

Specified by:

put in interface Map<Object,Object>

remove

public Object remove(Object key)

Specified by:

remove in interface Map<Object,Object>

clear

public void clear()

Specified by:

clear in interface Map<Object,Object>

putAll

public void putAll(@Nonnull
 Map<?,?> m)

Specified by:

putAll in interface Map<Object,Object>

keySet

@Nonnull
public Set<Object> keySet()

Specified by:

keySet in interface Map<Object,Object>

values

@Nonnull
public Collection<Object> values()

Specified by:

values in interface Map<Object,Object>

entrySet

@Nonnull
public Set<Map.Entry<Object,Object>> entrySet()

Specified by:

entrySet in interface Map<Object,Object>

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<Object,Object>

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<Object,Object>

Overrides:

hashCode in class Object