Package org.apache.drill.common.map

Class CaseInsensitiveMap<VALUE>

java.lang.Object

org.apache.drill.common.map.CaseInsensitiveMap<VALUE>

Type Parameters:

VALUE - the type of values to be stored in the map

All Implemented Interfaces:

Map<String,VALUE>

public class CaseInsensitiveMap<VALUE>
extends Object
implements Map<String,VALUE>

A special type of Map with Strings as keys, and the case of a key is ignored for operations involving keys like put(java.lang.String, VALUE), get(java.lang.Object), etc. The keys are stored and retrieved in lower case. Use the static factory methods to create instances of this class (e.g. newConcurrentMap()).

Nested Class Summary

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

Map.Entry<K,V>

Method Summary

Modifier and Type	Method	Description
void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<String,VALUE>>	entrySet()
boolean	equals(Object o)
VALUE	get(Object key)
int	hashCode()
boolean	isEmpty()
Set<String>	keySet()
static <VALUE> CaseInsensitiveMap<VALUE>	newConcurrentMap()	Returns a new instance of ConcurrentMap with key case-insensitivity.
static <VALUE> CaseInsensitiveMap<VALUE>	newHashMap()	Returns a new instance of HashMap with key case-insensitivity.
static <VALUE> CaseInsensitiveMap<VALUE>	newHashMapWithExpectedSize(int expectedSize)	Returns a new instance of HashMap, with key case-insensitivity, of expected size.
static <VALUE> CaseInsensitiveMap<VALUE>	newImmutableMap(Map<? extends String,? extends VALUE> map)	Returns a new instance of ImmutableMap with key case-insensitivity.
VALUE	put(String key, VALUE value)
void	putAll(Map<? extends String,? extends VALUE> map)
VALUE	remove(Object key)
int	size()
String	toString()
Collection<VALUE>	values()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

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

Method Details

newConcurrentMap

public static <VALUE> CaseInsensitiveMap<VALUE> newConcurrentMap()

Returns a new instance of ConcurrentMap with key case-insensitivity. See ConcurrentMap.

Type Parameters:

VALUE - type of values to be stored in the map

Returns:

key case-insensitive concurrent map

newHashMap

public static <VALUE> CaseInsensitiveMap<VALUE> newHashMap()

Returns a new instance of HashMap with key case-insensitivity. See HashMap.

Type Parameters:

VALUE - type of values to be stored in the map

Returns:

key case-insensitive hash map

newHashMapWithExpectedSize

public static <VALUE> CaseInsensitiveMap<VALUE> newHashMapWithExpectedSize(int expectedSize)

Returns a new instance of HashMap, with key case-insensitivity, of expected size. See HashMap.

Type Parameters:

VALUE - type of values to be stored in the map

Parameters:

expectedSize - expected size

Returns:

key case-insensitive hash map

newImmutableMap

public static <VALUE> CaseInsensitiveMap<VALUE> newImmutableMap(Map<? extends String,? extends VALUE> map)

Returns a new instance of ImmutableMap with key case-insensitivity. This map is built from the given map. See ImmutableMap.

Type Parameters:

VALUE - type of values to be stored in the map

Parameters:

map - map to copy from

Returns:

key case-insensitive immutable map

size

public int size()

Specified by:

size in interface Map<String,VALUE>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<String,VALUE>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<String,VALUE>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<String,VALUE>

get

public VALUE get(Object key)

Specified by:

get in interface Map<String,VALUE>

put

public VALUE put(String key,
 VALUE value)

Specified by:

put in interface Map<String,VALUE>

remove

public VALUE remove(Object key)

Specified by:

remove in interface Map<String,VALUE>

putAll

public void putAll(Map<? extends String,? extends VALUE> map)

Specified by:

putAll in interface Map<String,VALUE>

clear

public void clear()

Specified by:

clear in interface Map<String,VALUE>

keySet

public Set<String> keySet()

Specified by:

keySet in interface Map<String,VALUE>

values

public Collection<VALUE> values()

Specified by:

values in interface Map<String,VALUE>

entrySet

public Set<Map.Entry<String,VALUE>> entrySet()

Specified by:

entrySet in interface Map<String,VALUE>

hashCode

public int hashCode()

Specified by:

hashCode in interface Map<String,VALUE>

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Specified by:

equals in interface Map<String,VALUE>

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object