Package com.github.marschall.rangetree

Class SynchronizedRangeMap<K extends Comparable<? super K>,V>

java.lang.Object

com.github.marschall.rangetree.SynchronizedRangeMap<K,V>

Type Parameters:

K - the type of keys in this tree

V - the type of values in this tree

All Implemented Interfaces:

RangeMap<K,V>

public final class SynchronizedRangeMap<K extends Comparable<? super K>,V>
extends Object
implements RangeMap<K,V>

Adds synchronization around a RangeMap.

Constructor Summary

Constructors

Constructor	Description
SynchronizedRangeMap(RangeMap<K,V> delegate)	Constructs a new SynchronizedRangeMap.

Method Summary

Modifier and Type	Method	Description
void	clear()	Removes all mappings from this object.
V	computeIfAbsent(K key, Function<? super K,Map.Entry<Range<? extends K>,? extends V>> mappingFunction)	Looks up a value associated with a key.
V	get(K key)	Returns the value associated with a key.
void	put(K low, K high, V value)	Associates a range of keys with a value.
V	putIfAbsent(K low, K high, V value)	Associates a range of keys with a value only if no existing mapping exists.

Methods inherited from class java.lang.Object

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

Constructor Detail

SynchronizedRangeMap

public SynchronizedRangeMap(RangeMap<K,V> delegate)

Constructs a new SynchronizedRangeMap.

Parameters:

delegate - the delegate to wrap, not null

Throws:

NullPointerException - if delegate is null

Method Detail

clear

public void clear()

Description copied from interface: RangeMap

Removes all mappings from this object.

Specified by:

clear in interface RangeMap<K extends Comparable<? super K>,V>

See Also:

Map.clear()

get

public V get(K key)

Description copied from interface: RangeMap

Returns the value associated with a key.

Specified by:

get in interface RangeMap<K extends Comparable<? super K>,V>

Parameters:

key - the key for which to look up a value, not null

Returns:

the value associated with key or null if not found

See Also:

Map.get(Object)

computeIfAbsent

public V computeIfAbsent(K key,
                         Function<? super K,Map.Entry<Range<? extends K>,? extends V>> mappingFunction)

Description copied from interface: RangeMap

Looks up a value associated with a key. If none is found the mapping function is applied. If the mapping produces a not null value then the mapping is created.

Specified by:

computeIfAbsent in interface RangeMap<K extends Comparable<? super K>,V>

Parameters:

key - the key for which to look up a value, not null

mappingFunction - the mapping function to apply if no value has been found, not null

Returns:

the value associated with key or null if not found

See Also:

Map.computeIfAbsent(Object, Function), AbstractMap.SimpleImmutableEntry

put

public void put(K low,
                K high,
                V value)

Description copied from interface: RangeMap

Associates a range of keys with a value.

Specified by:

put in interface RangeMap<K extends Comparable<? super K>,V>

Parameters:

low - the lower end of the range, inclusive, not null

high - the upper end of the range, inclusive, not null

value - the value to associate, possibly null

See Also:

Map.put(Object, Object)

putIfAbsent

public V putIfAbsent(K low,
                     K high,
                     V value)

Description copied from interface: RangeMap

Associates a range of keys with a value only if no existing mapping exists.

Specified by:

putIfAbsent in interface RangeMap<K extends Comparable<? super K>,V>

Parameters:

low - the lower end of the range, inclusive, not null

high - the upper end of the range, inclusive, not null

value - the value to associate, possibly null

Returns:

the value mapped to the key range before this method was called

See Also:

Map.putIfAbsent(Object, Object)