net.openhft.collect.map
Interface IntFloatMap

All Superinterfaces:

Container, Map<Integer,Float>

All Known Subinterfaces:

HashIntFloatMap

public interface IntFloatMap
extends Map<Integer,Float>, Container

A Map specialization with int keys and float values.

See Also:

IntFloatMapFactory

Nested Class Summary

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

Map.Entry<K,V>

Method Summary

float	addValue(int key, float 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.
float	addValue(int key, float addition, float 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.
float	compute(int key, IntFloatToFloatFunction remappingFunction) Attempts to compute a mapping for the specified key and its current mapped value (or default value if there is no current mapping).
float	computeIfAbsent(int key, IntToFloatFunction 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 .
float	computeIfPresent(int key, IntFloatToFloatFunction 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(int key) Returns true if this map contains a mapping for the specified key.
boolean	containsKey(Object key) Deprecated. Use specialization containsKey(int) instead
boolean	containsValue(float value) Returns true if this map maps one or more keys to the specified value.
boolean	containsValue(Object value) Deprecated. Use specialization containsValue(float) instead
IntFloatCursor	cursor() Returns a new cursor over the entries of this map.
float	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<Integer,Float>>	entrySet()
void	forEach(IntFloatConsumer 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(IntFloatPredicate 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.
float	get(int key) Returns the value to which the specified key is mapped, or default value if this map contains no mapping for the key.
Float	get(Object key) Deprecated. Use specialization get(int) instead
float	getOrDefault(int key, float defaultValue) Returns the value to which the specified key is mapped, or defaultValue if this map contains no mapping for the key.
Float	getOrDefault(Object key, Float defaultValue) Deprecated. Use specialization getOrDefault(int, float) instead
IntSet	keySet()
float	merge(int key, float value, FloatBinaryOperator 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.
Float	put(Integer key, Float value) Deprecated. Use specialization put(int, float) instead
float	put(int key, float value) Associates the specified value with the specified key in this map (optional operation).
Float	putIfAbsent(Integer key, Float value) Deprecated. Use specialization putIfAbsent(int, float) instead
float	putIfAbsent(int key, float 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.
float	remove(int key) Removes the mapping for a key from this map if it is present (optional operation).
boolean	remove(int key, float value) Removes the entry for the specified key only if it is currently mapped to the specified value.
Float	remove(Object key) Deprecated. Use specialization remove(int) instead
boolean	remove(Object key, Object value) Deprecated. Use specialization remove(int, float) instead
boolean	removeIf(IntFloatPredicate filter) Removes all of the entries of this collection that satisfy the given predicate.
Float	replace(Integer key, Float value) Deprecated. Use specialization replace(int, float) instead
boolean	replace(Integer key, Float oldValue, Float newValue) Deprecated. Use specialization replace(int, float, float) instead
float	replace(int key, float value) Replaces the entry for the specified key only if it is currently mapped to some value.
boolean	replace(int key, float oldValue, float newValue) Replaces the entry for the specified key only if currently mapped to the specified value.
void	replaceAll(IntFloatToFloatFunction 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.
FloatCollection	values()

Methods inherited from interface java.util.Map

clear, equals, hashCode, isEmpty, putAll, size

Methods inherited from interface net.openhft.collect.Container

clear, ensureCapacity, isEmpty, shrink, size, sizeAsLong

Method Detail

defaultValue

float 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:

IntFloatMapFactory.withDefaultValue(float)

containsKey

@Deprecated
boolean containsKey(Object key)

Deprecated. Use specialization containsKey(int) instead

Specified by:

containsKey in interface Map<Integer,Float>

containsKey

boolean containsKey(int key)

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

Parameters:

key - the int 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(float) instead

Specified by:

containsValue in interface Map<Integer,Float>

containsValue

boolean containsValue(float 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 IntFloatMap interface.

Parameters:

value - the float 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
Float get(Object key)

Deprecated. Use specialization get(int) instead

Specified by:

get in interface Map<Integer,Float>

get

float get(int 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
Float getOrDefault(Object key,
                              Float defaultValue)

Deprecated. Use specialization getOrDefault(int, float) instead

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 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

float getOrDefault(int key,
                   float 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

Returns:

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

forEach

void forEach(@Nonnull
             IntFloatConsumer 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
                     IntFloatPredicate 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
IntFloatCursor 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
IntSet keySet()

Specified by:

keySet in interface Map<Integer,Float>

values

@Nonnull
FloatCollection values()

Specified by:

values in interface Map<Integer,Float>

entrySet

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

Specified by:

entrySet in interface Map<Integer,Float>

put

@Deprecated
Float put(Integer key,
                     Float value)

Deprecated. Use specialization put(int, float) instead

Specified by:

put in interface Map<Integer,Float>

put

float put(int key,
          float 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
Float putIfAbsent(Integer key,
                                      Float value)

Deprecated. Use specialization putIfAbsent(int, float) 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.

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

float putIfAbsent(int key,
                  float 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

float compute(int key,
              @Nonnull
              IntFloatToFloatFunction 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

float computeIfAbsent(int key,
                      @Nonnull
                      IntToFloatFunction 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

float computeIfPresent(int key,
                       @Nonnull
                       IntFloatToFloatFunction 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

float merge(int key,
            float value,
            @Nonnull
            FloatBinaryOperator 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

float addValue(int key,
               float 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

float addValue(int key,
               float addition,
               float 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(int, float) 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
Float replace(Integer key,
                                  Float value)

Deprecated. Use specialization replace(int, float) instead

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 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

float replace(int key,
              float 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(Integer key,
                           Float oldValue,
                           Float newValue)

Deprecated. Use specialization replace(int, float, float) instead

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:

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(int key,
                float oldValue,
                float 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

void replaceAll(@Nonnull
                IntFloatToFloatFunction 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
Float remove(Object key)

Deprecated. Use specialization remove(int) instead

Specified by:

remove in interface Map<Integer,Float>

remove

float remove(int 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(int, float) instead

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:

NullPointerException - if the specified key or value is null

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

remove

boolean remove(int key,
               float 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
                 IntFloatPredicate 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