speiger.src.collections.longs.utils.maps

Class Long2LongMaps.EmptyMap

java.lang.Object

java.util.AbstractMap<java.lang.Long,java.lang.Long>

speiger.src.collections.longs.maps.abstracts.AbstractLong2LongMap

speiger.src.collections.longs.utils.maps.Long2LongMaps.EmptyMap

All Implemented Interfaces:

java.util.function.LongUnaryOperator, java.util.Map<java.lang.Long,java.lang.Long>, Long2LongMap

Enclosing class:

Long2LongMaps

public static class Long2LongMaps.EmptyMap
extends AbstractLong2LongMap

Empty Map impementation that is used for the emptyMap() function

Nested Class Summary

Nested classes/interfaces inherited from class speiger.src.collections.longs.maps.abstracts.AbstractLong2LongMap

AbstractLong2LongMap.BasicEntry

Nested classes/interfaces inherited from class java.util.AbstractMap

java.util.AbstractMap.SimpleEntry<K,V>, java.util.AbstractMap.SimpleImmutableEntry<K,V>

Nested classes/interfaces inherited from interface speiger.src.collections.longs.maps.interfaces.Long2LongMap

Long2LongMap.BuilderCache, Long2LongMap.Entry, Long2LongMap.FastEntrySet, Long2LongMap.MapBuilder

Constructor Summary

Constructors

Constructor and Description
EmptyMap()

Method Summary

Modifier and Type	Method and Description
long	addTo(long key, long value) A Helper method to add a primitives together.
long	computeLong(long key, LongLongUnaryOperator mappingFunction) A Type Specific compute method to reduce boxing/unboxing
long	computeLongIfAbsent(long key, LongUnaryOperator mappingFunction) A Type Specific compute method to reduce boxing/unboxing
long	computeLongIfPresent(long key, LongLongUnaryOperator mappingFunction) A Type Specific compute method to reduce boxing/unboxing
Long2LongMaps.EmptyMap	copy() A Function that does a shallow clone of the Map itself.
long	get(long key) A Type Specific get method to reduce boxing/unboxing
long	getOrDefault(long key, long defaultValue) A Type Specific getOrDefault method to reduce boxing/unboxing
LongSet	keySet()
ObjectSet<Long2LongMap.Entry>	long2LongEntrySet() Type Sensitive EntrySet to reduce boxing/unboxing and optionally Temp Object Allocation.
void	mergeAllLong(Long2LongMap m, LongLongUnaryOperator mappingFunction) A Bulk method for merging Maps.
long	mergeLong(long key, long value, LongLongUnaryOperator mappingFunction) A Type Specific merge method to reduce boxing/unboxing
long	put(long key, long value) Type Specific method to reduce boxing/unboxing of values
long	putIfAbsent(long key, long value) Type Specific method to reduce boxing/unboxing of values
long	remove(long key) Type Specific remove function to reduce boxing/unboxing
boolean	remove(long key, long value) Type Specific remove function to reduce boxing/unboxing
long	removeOrDefault(long key, long defaultValue) Type-Specific Remove function with a default return value if wanted.
long	subFrom(long key, long value) A Helper method to subtract from primitive from each other.
long	supplyLongIfAbsent(long key, LongSupplier valueProvider) A Supplier based computeIfAbsent function to fill the most used usecase of this function
LongCollection	values()

Methods inherited from class speiger.src.collections.longs.maps.abstracts.AbstractLong2LongMap

addToAll, containsKey, containsValue, entrySet, equals, forEach, get, getDefaultReturnValue, getOrDefault, hashCode, put, putAll, putAll, putAll, putAll, putAllIfAbsent, remove, replace, replace, replaceLongs, replaceLongs, setDefaultReturnValue

Methods inherited from class java.util.AbstractMap

clear, containsKey, containsValue, isEmpty, size, toString

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface speiger.src.collections.longs.maps.interfaces.Long2LongMap

applyAsLong, builder, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, forEach, merge, put, put, putAll, putAll, putIfAbsent, remove, replace, replace, replaceAll, synchronize, synchronize, unmodifiable

Methods inherited from interface java.util.Map

clear, isEmpty, size

Methods inherited from interface speiger.src.collections.longs.functions.function.LongUnaryOperator

andThen, compose, identity

Methods inherited from interface java.util.function.LongUnaryOperator

andThen, compose

Constructor Detail

EmptyMap

public EmptyMap()

Method Detail

put

public long put(long key,
                long value)

Description copied from interface: Long2LongMap

Type Specific method to reduce boxing/unboxing of values

Parameters:

key - the key that should be inserted,

value - the value that should be inserted

Returns:

the last present value or default return value.

See Also:

Map.put(Object, Object)

putIfAbsent

public long putIfAbsent(long key,
                        long value)

Description copied from interface: Long2LongMap

Type Specific method to reduce boxing/unboxing of values

Parameters:

key - the key that should be inserted,

value - the value that should be inserted

Returns:

the last present value or default return value.

See Also:

Map.putIfAbsent(Object, Object)

addTo

public long addTo(long key,
                  long value)

Description copied from interface: Long2LongMap

A Helper method to add a primitives together. If key is not present then this functions as a put.

Parameters:

key - the key that should be inserted,

value - the value that should be inserted / added

Returns:

the last present value or default return value.

subFrom

public long subFrom(long key,
                    long value)

Description copied from interface: Long2LongMap

A Helper method to subtract from primitive from each other. If the key is not present it will just return the defaultValue How the implementation works is that it will subtract from the current value (if not present it will do nothing) and fence it to the Long2LongMap.getDefaultReturnValue() If the fence is reached the element will be automaticall removed

Parameters:

key - that should be subtract from

value - that should be subtract

Returns:

the last present or default return value

remove

public long remove(long key)

Description copied from interface: Long2LongMap

Type Specific remove function to reduce boxing/unboxing

Parameters:

key - the element that should be removed

Returns:

the value that was removed or default return value

removeOrDefault

public long removeOrDefault(long key,
                            long defaultValue)

Description copied from interface: Long2LongMap

Type-Specific Remove function with a default return value if wanted.

Parameters:

key - the element that should be removed

defaultValue - the value that should be returned if the entry doesn't exist

Returns:

the value that was removed or default value

See Also:

Map.remove(Object, Object)

remove

public boolean remove(long key,
                      long value)

Description copied from interface: Long2LongMap

Type Specific remove function to reduce boxing/unboxing

Parameters:

key - the element that should be removed

value - the expected value that should be found

Returns:

true if the key and value was found and removed

See Also:

Map.remove(Object, Object)

get

public long get(long key)

Description copied from interface: Long2LongMap

A Type Specific get method to reduce boxing/unboxing

Parameters:

key - the key that is searched for

Returns:

the searched value or default return value

getOrDefault

public long getOrDefault(long key,
                         long defaultValue)

Description copied from interface: Long2LongMap

A Type Specific getOrDefault method to reduce boxing/unboxing

Specified by:

getOrDefault in interface Long2LongMap

Overrides:

getOrDefault in class AbstractLong2LongMap

Parameters:

key - the key that is searched for

defaultValue - the value that should be returned if the key is not present

Returns:

the searched value or defaultValue value

computeLong

public long computeLong(long key,
                        LongLongUnaryOperator mappingFunction)

Description copied from interface: Long2LongMap

A Type Specific compute method to reduce boxing/unboxing

Specified by:

computeLong in interface Long2LongMap

Overrides:

computeLong in class AbstractLong2LongMap

Parameters:

key - the key that should be computed

mappingFunction - the operator that should generate the value

Returns:

the result of the computation

computeLongIfAbsent

public long computeLongIfAbsent(long key,
                                LongUnaryOperator mappingFunction)

Description copied from interface: Long2LongMap

A Type Specific compute method to reduce boxing/unboxing

Specified by:

computeLongIfAbsent in interface Long2LongMap

Overrides:

computeLongIfAbsent in class AbstractLong2LongMap

Parameters:

key - the key that should be computed

mappingFunction - the operator that should generate the value if not present

Returns:

the result of the computed value or present value

computeLongIfPresent

public long computeLongIfPresent(long key,
                                 LongLongUnaryOperator mappingFunction)

Description copied from interface: Long2LongMap

A Type Specific compute method to reduce boxing/unboxing

Specified by:

computeLongIfPresent in interface Long2LongMap

Overrides:

computeLongIfPresent in class AbstractLong2LongMap

Parameters:

key - the key that should be computed

mappingFunction - the operator that should generate the value if present

Returns:

the result of the default return value or present value

supplyLongIfAbsent

public long supplyLongIfAbsent(long key,
                               LongSupplier valueProvider)

Description copied from interface: Long2LongMap

A Supplier based computeIfAbsent function to fill the most used usecase of this function

Specified by:

supplyLongIfAbsent in interface Long2LongMap

Overrides:

supplyLongIfAbsent in class AbstractLong2LongMap

Parameters:

key - the key that should be computed

valueProvider - the value if not present

Returns:

the result of the computed value or present value

mergeLong

public long mergeLong(long key,
                      long value,
                      LongLongUnaryOperator mappingFunction)

Description copied from interface: Long2LongMap

A Type Specific merge method to reduce boxing/unboxing

Specified by:

mergeLong in interface Long2LongMap

Overrides:

mergeLong in class AbstractLong2LongMap

Parameters:

key - the key that should be be searched for

value - the value that should be merged with

mappingFunction - the operator that should generate the new Value

Returns:

the result of the merge

mergeAllLong

public void mergeAllLong(Long2LongMap m,
                         LongLongUnaryOperator mappingFunction)

Description copied from interface: Long2LongMap

A Bulk method for merging Maps.

Specified by:

mergeAllLong in interface Long2LongMap

Overrides:

mergeAllLong in class AbstractLong2LongMap

Parameters:

m - the entries that should be bulk added

mappingFunction - the operator that should generate the new Value

keySet

public LongSet keySet()

Specified by:

keySet in interface java.util.Map<java.lang.Long,java.lang.Long>

Specified by:

keySet in interface Long2LongMap

Overrides:

keySet in class AbstractLong2LongMap

values

public LongCollection values()

Specified by:

values in interface java.util.Map<java.lang.Long,java.lang.Long>

Specified by:

values in interface Long2LongMap

Overrides:

values in class AbstractLong2LongMap

long2LongEntrySet

public ObjectSet<Long2LongMap.Entry> long2LongEntrySet()

Description copied from interface: Long2LongMap

Type Sensitive EntrySet to reduce boxing/unboxing and optionally Temp Object Allocation.

Returns:

a EntrySet of the collection

copy

public Long2LongMaps.EmptyMap copy()

Description copied from interface: Long2LongMap

A Function that does a shallow clone of the Map itself. This function is more optimized then a copy constructor since the Map does not have to be unsorted/resorted. It can be compared to Cloneable but with less exception risk

Specified by:

copy in interface Long2LongMap

Overrides:

copy in class AbstractLong2LongMap

Returns:

a Shallow Copy of the Map