net.openhft.koloboke.collect.map

Interface LongLongMap

All Superinterfaces:

Container, Map<Long,Long>

All Known Subinterfaces:

HashLongLongMap

public interface LongLongMap
extends Map<Long,Long>, Container

A Map specialization with long keys and long values.

See Also:

LongLongMapFactory

Nested Class Summary

Nested classes/interfaces inherited from interface Map

Map.Entry<K,V>

Method Summary

Modifier and Type	Method and Description
long	addValue(long key, long addition) Adds the given addition value to the value associated with the specified key, or default value if this map contains no mapping for the key, and associates the resulting value with the key.
long	addValue(long key, long addition, long defaultValue) Adds the given addition value to the value associated with the specified key, or defaultValue if this map contains no mapping for the key, and associates the resulting value with the key.
Long	compute(Long key, java.util.function.BiFunction<? super Long,? super Long,? extends Long> remappingFunction) Deprecated. Use specialization compute(long, LongLongToLongFunction) instead
long	compute(long key, LongLongToLongFunction remappingFunction) Attempts to compute a mapping for the specified key and its current mapped value (or default value if there is no current mapping).
Long	computeIfAbsent(Long key, java.util.function.Function<? super Long,? extends Long> mappingFunction) Deprecated. Use specialization computeIfAbsent(long, LongUnaryOperator) instead
long	computeIfAbsent(long key, java.util.function.LongUnaryOperator mappingFunction) If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map .
Long	computeIfPresent(Long key, java.util.function.BiFunction<? super Long,? super Long,? extends Long> remappingFunction) Deprecated. Use specialization computeIfPresent(long, LongLongToLongFunction) instead
long	computeIfPresent(long key, LongLongToLongFunction remappingFunction) If the value for the specified key is present, attempts to compute a new mapping given the key and its current mapped value.
boolean	containsKey(long key) Returns true if this map contains a mapping for the specified key.
boolean	containsKey(Object key) Deprecated. Use specialization containsKey(long) instead
boolean	containsValue(long value) Returns true if this map maps one or more keys to the specified value.
boolean	containsValue(Object value) Deprecated. Use specialization containsValue(long) instead
LongLongCursor	cursor() Returns a new cursor over the entries of this map.
long	defaultValue() Returns the default value of this map, which is used instead of null in primitive specialization methods, when the key is absent in the map.
ObjSet<Map.Entry<Long,Long>>	entrySet() Returns a Set view of the mappings contained in this map.
void	forEach(java.util.function.BiConsumer<? super Long,? super Long> action) Deprecated. Use specialization forEach(LongLongConsumer) instead
void	forEach(LongLongConsumer action) Performs the given action on each entry in this map until all entries have been processed or the action throws an Exception.
boolean	forEachWhile(LongLongPredicate predicate) Checks the given predicate on each entry in this map until all entries have been processed or the predicate returns false for some entry, or throws an Exception.
long	get(long key) Returns the value to which the specified key is mapped, or default value if this map contains no mapping for the key.
Long	get(Object key) Deprecated. Use specialization get(long) instead
long	getOrDefault(long key, long defaultValue) Returns the value to which the specified key is mapped, or defaultValue if this map contains no mapping for the key.
Long	getOrDefault(Object key, Long defaultValue) Deprecated. Use specialization getOrDefault(long, long) instead
LongSet	keySet() Returns a Set view of the keys contained in this map.
Long	merge(Long key, Long value, java.util.function.BiFunction<? super Long,? super Long,? extends Long> remappingFunction) Deprecated. Use specialization merge(long, long, LongBinaryOperator) instead
long	merge(long key, long value, java.util.function.LongBinaryOperator remappingFunction) If the specified key is not already associated with a value, associates it with the given value, otherwise, replaces the value with the results of the given remapping function.
long	put(long key, long value) Associates the specified value with the specified key in this map (optional operation).
Long	put(Long key, Long value) Deprecated. Use specialization put(long, long) instead
long	putIfAbsent(long key, long value) If the specified key is not already associated with a value, associates it with the given value and returns default value, else returns the current value.
Long	putIfAbsent(Long key, Long value) Deprecated. Use specialization putIfAbsent(long, long) instead
long	remove(long key) Removes the mapping for a key from this map if it is present (optional operation).
boolean	remove(long key, long value) Removes the entry for the specified key only if it is currently mapped to the specified value.
Long	remove(Object key) Deprecated. Use specialization remove(long) instead
boolean	remove(Object key, Object value) Deprecated. Use specialization remove(long, long) instead
boolean	removeIf(LongLongPredicate filter) Removes all of the entries of this collection that satisfy the given predicate.
long	replace(long key, long value) Replaces the entry for the specified key only if it is currently mapped to some value.
Long	replace(Long key, Long value) Deprecated. Use specialization replace(long, long) instead
boolean	replace(long key, long oldValue, long newValue) Replaces the entry for the specified key only if currently mapped to the specified value.
boolean	replace(Long key, Long oldValue, Long newValue) Deprecated. Use specialization replace(long, long, long) instead
void	replaceAll(java.util.function.BiFunction<? super Long,? super Long,? extends Long> function) Deprecated. Use specialization replaceAll(LongLongToLongFunction) instead
void	replaceAll(LongLongToLongFunction function) Replaces each entry's value with the result of invoking the given function on that entry, in the order entries are returned by an entry set iterator, until all entries have been processed or the function throws an exception.
LongCollection	values() Returns a Collection view of the values contained in this map.

Methods inherited from interface Map

clear, equals, hashCode, isEmpty, putAll, size

Methods inherited from interface net.openhft.koloboke.collect.Container

clear, ensureCapacity, isEmpty, shrink, size, sizeAsLong

Method Detail

defaultValue

long defaultValue()

Returns the default value of this map, which is used instead of null in primitive specialization methods, when the key is absent in the map.

Returns:

the default value of this map

See Also:

LongLongMapFactory.withDefaultValue(long)

containsKey

@Deprecated
boolean containsKey(Object key)

Deprecated. Use specialization containsKey(long) instead

Returns true if this map contains a mapping for the specified key. More formally, returns true if and only if this map contains a mapping for a key k such that (key==null ? k==null : key.equals(k)). (There can be at most one such mapping.)

Specified by:

containsKey in interface Map<Long,Long>

Parameters:

key - key whose presence in this map is to be tested

Returns:

true if this map contains a mapping for the specified key

containsKey

boolean containsKey(long key)

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

Parameters:

key - the long key whose presence in this map is to be tested

Returns:

true if this map contains a mapping for the specified key

containsValue

@Deprecated
boolean containsValue(Object value)

Deprecated. Use specialization containsValue(long) instead

Returns true if this map maps one or more keys to the specified value. More formally, returns true if and only if this map contains at least one mapping to a value v such that (value==null ? v==null : value.equals(v)). This operation will probably require time linear in the map size for most implementations of the Map interface.

Specified by:

containsValue in interface Map<Long,Long>

Parameters:

value - value whose presence in this map is to be tested

Returns:

true if this map maps one or more keys to the specified value

containsValue

boolean containsValue(long value)

Returns true if this map maps one or more keys to the specified value. This operation will probably require time linear in the map size for most implementations of the LongLongMap interface.

Parameters:

value - the long value whose presence in this map is to be tested

Returns:

true if this map maps one or more keys to the specified value

get

@Nullable
 @Deprecated
Long get(Object key)

Deprecated. Use specialization get(long) instead

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.)

If this map permits null values, then 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.

Specified by:

get in interface Map<Long,Long>

Parameters:

key - the key whose associated value is to be returned

Returns:

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

get

long get(long key)

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

Parameters:

key - the key whose associated value is to be returned

Returns:

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

getOrDefault

@Deprecated
Long getOrDefault(Object key,
                               Long defaultValue)

Deprecated. Use specialization getOrDefault(long, long) instead

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

Specified by:

getOrDefault in interface Map<Long,Long>

Parameters:

key - the key whose associated value is to be returned

defaultValue - the default mapping of the key

Returns:

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

getOrDefault

long getOrDefault(long key,
                  long defaultValue)

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

Parameters:

key - the key whose associated value is to be returned

defaultValue - the value to return if the specified key is absent in the map

Returns:

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

forEach

@Deprecated
void forEach(@Nonnull
                          java.util.function.BiConsumer<? super Long,? super Long> action)

Deprecated. Use specialization forEach(LongLongConsumer) instead

Performs the given action for each entry in this map until all entries have been processed or the action throws an exception. Unless otherwise specified by the implementing class, actions are performed in the order of entry set iteration (if an iteration order is specified.) Exceptions thrown by the action are relayed to the caller.

Specified by:

forEach in interface Map<Long,Long>

Parameters:

action - The action to be performed for each entry

forEach

void forEach(@Nonnull
             LongLongConsumer action)

Performs the given action on each entry in this map until all entries have been processed or the action throws an Exception. Exceptions thrown by the action are relayed to the caller. The entries will be processed in the same order as the entry set iterator unless that order is unspecified in which case implementations may use an order which differs from the entry set iterator.

Parameters:

action - The action to be performed for each entry

See Also:

Comparison of iteration options in the library

forEachWhile

boolean forEachWhile(@Nonnull
                     LongLongPredicate predicate)

Checks the given predicate on each entry in this map until all entries have been processed or the predicate returns false for some entry, or throws an Exception. Exceptions thrown by the predicate are relayed to the caller.

The entries will be processed in the same order as the entry set iterator unless that order is unspecified in which case implementations may use an order which differs from the entry set iterator.

If the map is empty, this method returns true immediately.

Parameters:

predicate - the predicate to be checked for each entry

Returns:

true if the predicate returned true for all entries of the map, false if it returned false for the entry

See Also:

Comparison of iteration options in the library

cursor

@Nonnull
LongLongCursor cursor()

Returns a new cursor over the entries of this map. It's order is always correspond to the entry set iterator order.

Returns:

a new cursor over the entries of this map

See Also:

Comparison of iteration options in the library

keySet

@Nonnull
LongSet keySet()

Description copied from interface: java.util.Map

Returns a Set view of the keys contained in this map. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll, and clear operations. It does not support the add or addAll operations.

Specified by:

keySet in interface Map<Long,Long>

Returns:

a set view of the keys contained in this map

values

@Nonnull
LongCollection values()

Description copied from interface: java.util.Map

Returns a Collection view of the values contained in this map. The collection is backed by the map, so changes to the map are reflected in the collection, and vice-versa. If the map is modified while an iteration over the collection is in progress (except through the iterator's own remove operation), the results of the iteration are undefined. The collection supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Collection.remove, removeAll, retainAll and clear operations. It does not support the add or addAll operations.

Specified by:

values in interface Map<Long,Long>

Returns:

a collection view of the values contained in this map

entrySet

@Nonnull
ObjSet<Map.Entry<Long,Long>> entrySet()

Description copied from interface: java.util.Map

Returns a Set view of the mappings contained in this map. The set is backed by the map, so changes to the map are reflected in the set, and vice-versa. If the map is modified while an iteration over the set is in progress (except through the iterator's own remove operation, or through the setValue operation on a map entry returned by the iterator) the results of the iteration are undefined. The set supports element removal, which removes the corresponding mapping from the map, via the Iterator.remove, Set.remove, removeAll, retainAll and clear operations. It does not support the add or addAll operations.

Specified by:

entrySet in interface Map<Long,Long>

Returns:

a set view of the mappings contained in this map

put

@Deprecated
Long put(Long key,
                      Long value)

Deprecated. Use specialization put(long, long) instead

Associates the specified value with the specified key in this map (optional operation). If the map previously contained a mapping for the key, the old value is replaced by the specified value. (A map m is said to contain a mapping for a key k if and only if m.containsKey(k) would return true.)

Specified by:

put in interface Map<Long,Long>

Parameters:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

Returns:

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, if the implementation supports null values.)

put

long put(long key,
         long value)

Associates the specified value with the specified key in this map (optional operation). If the map previously contained a mapping for the key, the old value is replaced by the specified value. (A map m is said to contain a mapping for a key k if and only if m.containsKey(k) would return true.)

Parameters:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

Returns:

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

Throws:

UnsupportedOperationException - if the put operation is not supported by this map

IllegalArgumentException - if some property of a specified key or value prevents it from being stored in this map

putIfAbsent

@Nullable
 @Deprecated
Long putIfAbsent(Long key,
                                          Long value)

Deprecated. Use specialization putIfAbsent(long, long) instead

If the specified key is not already associated with a value, associates it with the given value and returns null, else returns the current value.

Specified by:

putIfAbsent in interface Map<Long,Long>

Parameters:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

Returns:

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.)

Throws:

UnsupportedOperationException - if the put operation is not supported by this map

ClassCastException - if the key or value is of an inappropriate type for this map

NullPointerException - if the specified key or value is null

IllegalArgumentException - if some property of the specified key or value prevents it from being stored in this map

putIfAbsent

long putIfAbsent(long key,
                 long value)

If the specified key is not already associated with a value, associates it with the given value and returns default value, else returns the current value.

Parameters:

key - key with which the specified value is to be associated

value - value to be associated with the specified key

Returns:

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

Throws:

UnsupportedOperationException - if the put operation is not supported by this map

IllegalArgumentException - if some property of a specified key or value prevents it from being stored in this map

compute

@Deprecated
Long compute(Long key,
                          @Nonnull
                          java.util.function.BiFunction<? super Long,? super Long,? extends Long> remappingFunction)

Deprecated. Use specialization compute(long, LongLongToLongFunction) instead

Attempts to compute a mapping for the specified key and its current mapped value (or null if there is no current mapping). For example, to either create or append a String msg to a value mapping:

 
 map.compute(key, (k, v) -> (v == null) ? msg : v.concat(msg))

(Method merge() is often simpler to use for such purposes.)

If the function returns null, the mapping is removed (or remains absent if initially absent). If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.

Specified by:

compute in interface Map<Long,Long>

Parameters:

key - key with which the specified value is to be associated

remappingFunction - the function to compute a value

Returns:

the new value associated with the specified key, or null if none

compute

long compute(long key,
             @Nonnull
             LongLongToLongFunction remappingFunction)

Attempts to compute a mapping for the specified key and its current mapped value (or default value if there is no current mapping).

If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.

Parameters:

key - key with which the specified value is to be associated

remappingFunction - the function to compute a value

Returns:

the new value associated with the specified key

Throws:

UnsupportedOperationException - if the put operation is not supported by this map

computeIfAbsent

@Deprecated
Long computeIfAbsent(Long key,
                                  @Nonnull
                                  java.util.function.Function<? super Long,? extends Long> mappingFunction)

Deprecated. Use specialization computeIfAbsent(long, LongUnaryOperator) instead

If the specified key is not already associated with a value (or is mapped to null), attempts to compute its value using the given mapping function and enters it into this map unless null.

If the function returns null no mapping is recorded. If the function itself throws an (unchecked) exception, the exception is rethrown, and no mapping is recorded. The most common usage is to construct a new object serving as an initial mapped value or memoized result, as in:

 
 map.computeIfAbsent(key, k -> new Value(f(k)));
 

Or to implement a multi-value map, Map<K,Collection<V>>, supporting multiple values per key:

 
 map.computeIfAbsent(key, k -> new HashSet<V>()).add(v);
 

Specified by:

computeIfAbsent in interface Map<Long,Long>

Parameters:

key - key with which the specified value is to be associated

mappingFunction - the function to compute a value

Returns:

the current (existing or computed) value associated with the specified key, or null if the computed value is null

computeIfAbsent

long computeIfAbsent(long key,
                     @Nonnull
                     java.util.function.LongUnaryOperator mappingFunction)

If the specified key is not already associated with a value, attempts to compute its value using the given mapping function and enters it into this map . The most common usage is to construct a new object serving as an initial mapped value or memoized result.

If the function itself throws an (unchecked) exception, the exception is rethrown, and no mapping is recorded.

Parameters:

key - key with which the specified value is to be associated

mappingFunction - the function to compute a value

Returns:

the current (existing or computed) value associated with the specified key

Throws:

UnsupportedOperationException - if the put operation is not supported by this map

computeIfPresent

@Deprecated
Long computeIfPresent(Long key,
                                   @Nonnull
                                   java.util.function.BiFunction<? super Long,? super Long,? extends Long> remappingFunction)

Deprecated. Use specialization computeIfPresent(long, LongLongToLongFunction) instead

If the value for the specified key is present and non-null, attempts to compute a new mapping given the key and its current mapped value.

If the function returns null, the mapping is removed. If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.

Specified by:

computeIfPresent in interface Map<Long,Long>

Parameters:

key - key with which the specified value is to be associated

remappingFunction - the function to compute a value

Returns:

the new value associated with the specified key, or null if none

computeIfPresent

long computeIfPresent(long key,
                      @Nonnull
                      LongLongToLongFunction remappingFunction)

If the value for the specified key is present, attempts to compute a new mapping given the key and its current mapped value.

If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.

Parameters:

key - key with which the specified value is to be associated

remappingFunction - the function to compute a value

Returns:

the new value associated with the specified key, or "no entry" value

Throws:

UnsupportedOperationException - if the put operation is not supported by this map

merge

@Deprecated
Long merge(Long key,
                        Long value,
                        @Nonnull
                        java.util.function.BiFunction<? super Long,? super Long,? extends Long> remappingFunction)

Deprecated. Use specialization merge(long, long, LongBinaryOperator) instead

If the specified key is not already associated with a value or is associated with null, associates it with the given non-null value. Otherwise, replaces the associated value with the results of the given remapping function, or removes if the result is null. This method may be of use when combining multiple mapped values for a key. For example, to either create or append a String msg to a value mapping:

 
 map.merge(key, msg, String::concat)
 

If the function returns null the mapping is removed. If the function itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.

Specified by:

merge in interface Map<Long,Long>

Parameters:

key - key with which the resulting value is to be associated

value - the non-null value to be merged with the existing value associated with the key or, if no existing value or a null value is associated with the key, to be associated with the key

remappingFunction - the function to recompute a value if present

Returns:

the new value associated with the specified key, or null if no value is associated with the key

merge

long merge(long key,
           long value,
           @Nonnull
           java.util.function.LongBinaryOperator remappingFunction)

If the specified key is not already associated with a value, associates it with the given value, otherwise, replaces the value with the results of the given remapping function. This method may be of use when combining multiple mapped values for a key.

If the remappingFunction itself throws an (unchecked) exception, the exception is rethrown, and the current mapping is left unchanged.

Parameters:

key - key with which the specified value is to be associated

value - the value to use if absent

remappingFunction - the function to recompute a value if present

Returns:

the new value associated with the specified key

Throws:

NullPointerException - if the remappingFunction is null

UnsupportedOperationException - if the put operation is not supported by this map

addValue

long addValue(long key,
              long addition)

Adds the given addition value to the value associated with the specified key, or default value if this map contains no mapping for the key, and associates the resulting value with the key.

Parameters:

key - the key to which value add the given value

addition - the value to add

Returns:

the new value associated with the specified key

Throws:

UnsupportedOperationException - if the put operation is not supported by this map

addValue

long addValue(long key,
              long addition,
              long defaultValue)

Adds the given addition value to the value associated with the specified key, or defaultValue if this map contains no mapping for the key, and associates the resulting value with the key.

This version of addValue(long, long) is useful if you want to count values from the different initial value, than the default value of this map.

Parameters:

key - the key to which value add the given value

addition - the value to add

defaultValue - the value to be used if the map contains no mapping for the given key

Returns:

the new value associated with the specified key

Throws:

UnsupportedOperationException - if the put operation is not supported by this map

replace

@Nullable
 @Deprecated
Long replace(Long key,
                                      Long value)

Deprecated. Use specialization replace(long, long) instead

Replaces the entry for the specified key only if it is currently mapped to some value.

Specified by:

replace in interface Map<Long,Long>

Parameters:

key - key with which the specified value is associated

value - value to be associated with the specified key

Returns:

the previous value associated with the specified key, or null if there was no mapping for the key.

Throws:

UnsupportedOperationException - if the put operation is not supported by this map

NullPointerException - if the specified key or value is null

IllegalArgumentException - if some property of the specified value prevents it from being stored in this map

replace

long replace(long key,
             long value)

Replaces the entry for the specified key only if it is currently mapped to some value.

Parameters:

key - key with which the specified value is associated

value - value to be associated with the specified key

Returns:

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

Throws:

IllegalArgumentException - if some property of a specified key or value prevents it from being stored in this map

UnsupportedOperationException - if the put operation is not supported by this map

replace

@Deprecated
boolean replace(Long key,
                             Long oldValue,
                             Long newValue)

Deprecated. Use specialization replace(long, long, long) instead

Replaces the entry for the specified key only if currently mapped to the specified value.

Specified by:

replace in interface Map<Long,Long>

Parameters:

key - key with which the specified value is associated

oldValue - value expected to be associated with the specified key

newValue - value to be associated with the specified key

Returns:

true if the value was replaced

Throws:

UnsupportedOperationException - if the put operation is not supported by this map

NullPointerException - if the specified key or value is null

IllegalArgumentException - if some property of the specified value prevents it from being stored in this map

replace

boolean replace(long key,
                long oldValue,
                long newValue)

Replaces the entry for the specified key only if currently mapped to the specified value.

Parameters:

key - key with which the specified value is associated

oldValue - value expected to be associated with the specified key

newValue - value to be associated with the specified key

Returns:

true if the value was replaced

Throws:

IllegalArgumentException - if some property of a specified key or value prevents it from being stored in this map

UnsupportedOperationException - if the put operation is not supported by this map

replaceAll

@Deprecated
void replaceAll(@Nonnull
                             java.util.function.BiFunction<? super Long,? super Long,? extends Long> function)

Deprecated. Use specialization replaceAll(LongLongToLongFunction) instead

Replaces each entry's value with the result of invoking the given function on that entry until all entries have been processed or the function throws an exception. Exceptions thrown by the function are relayed to the caller.

Specified by:

replaceAll in interface Map<Long,Long>

Parameters:

function - the function to apply to each entry

replaceAll

void replaceAll(@Nonnull
                LongLongToLongFunction function)

Replaces each entry's value with the result of invoking the given function on that entry, in the order entries are returned by an entry set iterator, until all entries have been processed or the function throws an exception.

Parameters:

function - the function to apply to each entry

Throws:

UnsupportedOperationException - if the set operation is not supported by this map's entry set iterator

IllegalArgumentException - if some property of a replacement value prevents it from being stored in this map (optional restriction)

remove

@Nullable
 @Deprecated
Long remove(Object key)

Deprecated. Use specialization remove(long) instead

Removes the mapping for a key from this map if it is present (optional operation). More formally, if this map contains a mapping from key k to value v such that (key==null ? k==null : key.equals(k)), that mapping is removed. (The map can contain at most one such mapping.)

Returns the value to which this map previously associated the key, or null if the map contained no mapping for the key.

If this map permits null values, then a return value of null does not necessarily indicate that the map contained no mapping for the key; it's also possible that the map explicitly mapped the key to null.

The map will not contain a mapping for the specified key once the call returns.

Specified by:

remove in interface Map<Long,Long>

Parameters:

key - key whose mapping is to be removed from the map

Returns:

the previous value associated with key, or null if there was no mapping for key.

remove

long remove(long key)

Removes the mapping for a key from this map if it is present (optional operation).

Returns the value to which this map previously associated the key, or default value if the map contained no mapping for the key.

A return value of default value does not necessarily indicate that the map contained no mapping for the key; it's also possible that the map explicitly mapped the key to default value.

The map will not contain a mapping for the specified key once the call returns.

Parameters:

key - key whose mapping is to be removed from the map

Returns:

the previous value associated with key, or default value if there was no mapping for key

Throws:

UnsupportedOperationException - if the remove operation is not supported by this map

remove

@Deprecated
boolean remove(Object key,
                            Object value)

Deprecated. Use specialization remove(long, long) instead

Removes the entry for the specified key only if it is currently mapped to the specified value.

Specified by:

remove in interface Map<Long,Long>

Parameters:

key - key with which the specified value is associated

value - value expected to be associated with the specified key

Returns:

true if the value was removed

Throws:

NullPointerException - if the specified key or value is null

UnsupportedOperationException - if the remove operation is not supported by this map

remove

boolean remove(long key,
               long value)

Removes the entry for the specified key only if it is currently mapped to the specified value.

Parameters:

key - key with which the specified value is associated

value - value expected to be associated with the specified key

Returns:

true if the value was removed

Throws:

UnsupportedOperationException - if the remove operation is not supported by this map

removeIf

boolean removeIf(@Nonnull
                 LongLongPredicate filter)

Removes all of the entries of this collection that satisfy the given predicate. Errors or runtime exceptions thrown during iteration or by the predicate are relayed to the caller.

Parameters:

filter - a predicate which returns true for elements to be removed

Returns:

true if any elements were removed

Throws:

NullPointerException - if the specified filter is null

UnsupportedOperationException - if elements cannot be removed from this collection. Implementations may throw this exception if a matching element cannot be removed or if, in general, removal is not supported.

See Also:

Comparison of iteration options in the library