H2 Database Engine 2.3.232 · org.h2.value.CaseInsensitiveMap

Modifier and Type	Field and Description
private static final long	serialVersionUID Hides java.util.HashMap.serialVersionUID.

Access	Constructor and Description
public	CaseInsensitiveMap() Creates new instance of case-insensitive map.
public	CaseInsensitiveMap(int the initial capacity initialCapacity) Creates new instance of case-insensitive map with specified initial capacity.

Method Summary

Modifier and Type	Method and Description
public boolean	containsKey(Object The key whose presence in this map is to be tested key) Overrides java.util.HashMap.containsKey. Implements java.util.Map.containsKey. Returns `true` if this map contains a mapping for the specified key.
public V	get(Object the key whose associated value is to be returned key) Overrides java.util.HashMap.get. Implements java.util.Map.get. Returns the value to which the specified key is mapped, or `null` if this map contains no mapping for the key.
public V	put(String key with which the specified value is to be associated key, V value to be associated with the specified key value) Overrides java.util.HashMap.put. Implements java.util.Map.put. Associates the specified value with the specified key in this map.
public V	putIfAbsent(String key with which the specified value is to be associated key, V value to be associated with the specified key value) Overrides java.util.HashMap.putIfAbsent. Overrides default java.util.Map.putIfAbsent. If the specified key is not already associated with a value (or is mapped to `null`) associates it with the given value and returns `null`, else returns the current value (optional operation).
public V	remove(Object key whose mapping is to be removed from the map key) Overrides java.util.HashMap.remove. Implements java.util.Map.remove. Removes the mapping for the specified key from this map if present.

Inherited from java.util.HashMap:: clear clone compute computeIfAbsent computeIfPresent containsValue entrySet forEach getOrDefault isEmpty keySet merge newHashMap putAll remove replace replace replaceAll size values

serialVersionUID	back to summary
private static final long serialVersionUID Hides java.util.HashMap.serialVersionUID.

CaseInsensitiveMap	back to summary
public CaseInsensitiveMap() Creates new instance of case-insensitive map.

CaseInsensitiveMap	back to summary
public CaseInsensitiveMap(int initialCapacity) Creates new instance of case-insensitive map with specified initial capacity. Parameters initialCapacity:int the initial capacity

Method Detail

containsKey back to summary

containsKey	back to summary
public boolean containsKey(Object key) Overrides java.util.HashMap.containsKey. Implements java.util.Map.containsKey. Doc from java.util.HashMap.containsKey. Returns `true` if this map contains a mapping for the specified key. Parameters key:Object The key whose presence in this map is to be tested Returns:boolean `true` if this map contains a mapping for the specified key. Annotations @Override

public boolean containsKey(Object key)

Overrides java.util.HashMap.containsKey.

Implements java.util.Map.containsKey.

Doc from java.util.HashMap.containsKey.

Returns true if this map contains a mapping for the specified key.

Parameters

key:Object: The key whose presence in this map is to be tested

Returns:boolean

true if this map contains a mapping for the specified key.

Annotations

@Override

get back to summary

get	back to summary
public V get(Object key) Overrides java.util.HashMap.get. Implements java.util.Map.get. Doc from java.util.HashMap.get. Returns the value to which the specified key is mapped, or `null` if this map contains no mapping for the key. More formally, if this map contains a mapping from a key `k` to a value `v` such that `(key==null ? k==null : key.equals(k))`, then this method returns `v`; otherwise it returns `null`. (There can be at most one such mapping.) A return value of `null` does not necessarily indicate that the map contains no mapping for the key; it's also possible that the map explicitly maps the key to `null`. The `containsKey` operation may be used to distinguish these two cases. Parameters key:Object Doc from java.util.Map.get. the key whose associated value is to be returned Returns:V Doc from java.util.Map.get. the value to which the specified key is mapped, or `null` if this map contains no mapping for the key Annotations @Override

public V get(Object key)

Overrides java.util.HashMap.get.

Implements java.util.Map.get.

Doc from java.util.HashMap.get.

Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.

More formally, if this map contains a mapping from a key k to a value v such that (key==null ? k==null : key.equals(k)), then this method returns v; otherwise it returns null. (There can be at most one such mapping.)

A return value of null does not necessarily indicate that the map contains no mapping for the key; it's also possible that the map explicitly maps the key to null. The containsKey operation may be used to distinguish these two cases.

Parameters

key:Object

Doc from java.util.Map.get.

the key whose associated value is to be returned

Returns:V

Doc from java.util.Map.get.

the value to which the specified key is mapped, or null if this map contains no mapping for the key

Annotations

@Override

put back to summary

put	back to summary
public V put(String key, V value) Overrides java.util.HashMap.put. Implements java.util.Map.put. Doc from java.util.HashMap.put. Associates the specified value with the specified key in this map. If the map previously contained a mapping for the key, the old value is replaced. Parameters key:String key with which the specified value is to be associated value:V value to be associated with the specified key Returns:V the previous value associated with `key`, or `null` if there was no mapping for `key`. (A `null` return can also indicate that the map previously associated `null` with `key`.) Annotations @Override

public V put(String key, V value)

Overrides java.util.HashMap.put.

Implements java.util.Map.put.

Doc from java.util.HashMap.put.

Associates the specified value with the specified key in this map. If the map previously contained a mapping for the key, the old value is replaced.

Parameters

key:String: key with which the specified value is to be associated
value:V: value to be associated with the specified key

Returns:V

the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key.)

Annotations

@Override

putIfAbsent back to summary

putIfAbsent	back to summary
public V putIfAbsent(String key, V value) Overrides java.util.HashMap.putIfAbsent. Overrides default java.util.Map.putIfAbsent. Doc from java.util.Map.putIfAbsent. If the specified key is not already associated with a value (or is mapped to `null`) associates it with the given value and returns `null`, else returns the current value (optional operation). Parameters key:String key with which the specified value is to be associated value:V value to be associated with the specified key Returns:V the previous value associated with the specified key, or `null` if there was no mapping for the key. (A `null` return can also indicate that the map previously associated `null` with the key, if the implementation supports null values.) Annotations @Override

public V putIfAbsent(String key, V value)

Overrides java.util.HashMap.putIfAbsent.

Overrides default java.util.Map.putIfAbsent.

Doc from java.util.Map.putIfAbsent.

If the specified key is not already associated with a value (or is mapped to null) associates it with the given value and returns null, else returns the current value (optional operation).

Parameters

key:String: key with which the specified value is to be associated
value:V: value to be associated with the specified key

Returns:V

the previous value associated with the specified key, or null if there was no mapping for the key. (A null return can also indicate that the map previously associated null with the key, if the implementation supports null values.)

Annotations

@Override

remove back to summary

remove	back to summary
public V remove(Object key) Overrides java.util.HashMap.remove. Implements java.util.Map.remove. Doc from java.util.HashMap.remove. Removes the mapping for the specified key from this map if present. Parameters key:Object key whose mapping is to be removed from the map Returns:V the previous value associated with `key`, or `null` if there was no mapping for `key`. (A `null` return can also indicate that the map previously associated `null` with `key`.) Annotations @Override

public V remove(Object key)

Overrides java.util.HashMap.remove.

Implements java.util.Map.remove.

Doc from java.util.HashMap.remove.

Removes the mapping for the specified key from this map if present.

Parameters

key:Object: key whose mapping is to be removed from the map

Returns:V

the previous value associated with key, or null if there was no mapping for key. (A null return can also indicate that the map previously associated null with key.)

Annotations

@Override

public Class CaseInsensitiveMap<V>

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail