it.unimi.dsi.fastutil.objects
Class Reference2LongFunctions.UnmodifiableFunction<K>

java.lang.Object
  it.unimi.dsi.fastutil.objects.AbstractReference2LongFunction<K>
      it.unimi.dsi.fastutil.objects.Reference2LongFunctions.UnmodifiableFunction<K>

All Implemented Interfaces:

Function<K,Long>, Reference2LongFunction<K>, Serializable

Direct Known Subclasses:

Reference2LongMaps.UnmodifiableMap

Enclosing class:

Reference2LongFunctions

public static class Reference2LongFunctions.UnmodifiableFunction<K>
extends AbstractReference2LongFunction<K>
implements Serializable

An unmodifiable wrapper class for functions.

See Also:

Serialized Form

Field Summary

static long

serialVersionUID

Method Summary

void	clear() Removes all associations from this function (optional operation).
boolean	containsKey(Object k) Returns true if this function contains a mapping for the specified key.
long	defaultReturnValue() Gets the default return value.
void	defaultReturnValue(long defRetValue) Sets the default return value.
long	getLong(Object k) Returns the value to which the given key is mapped.
long	put(K k, long v) Adds a pair to the map.
long	removeLong(Object k) Removes the mapping with the given key.
int	size() Returns the intended number of keys in this function, or -1 if no such number exists.
String	toString()

Methods inherited from class it.unimi.dsi.fastutil.objects.AbstractReference2LongFunction

get, put, remove

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Method Detail

size

public int size()

Description copied from interface: Function

Returns the intended number of keys in this function, or -1 if no such number exists.

Most function implementations will have some knowledge of the intended number of keys in their domain. In some cases, however, this might not be possible.

Specified by:

size in interface Function<K,Long>

Returns:

the intended number of keys in this function, or -1 if that number is not available.

containsKey

public boolean containsKey(Object k)

Description copied from interface: Function

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

Note that for some kind of functions (e.g., hashes) this method will always return true.

Specified by:

containsKey in interface Function<K,Long>

Parameters:

k - the key.

Returns:

true if this function associates a value to key.

See Also:

Map.containsKey(Object)

defaultReturnValue

public long defaultReturnValue()

Description copied from interface: Reference2LongFunction

Gets the default return value.

Specified by:

defaultReturnValue in interface Reference2LongFunction<K>

Overrides:

defaultReturnValue in class AbstractReference2LongFunction<K>

Returns:

the current default return value.

defaultReturnValue

public void defaultReturnValue(long defRetValue)

Description copied from interface: Reference2LongFunction

Sets the default return value. This value must be returned by type-specific versions of get(), put() and remove() to denote that the map does not contain the specified key. It must be 0/false/null by default.

Specified by:

defaultReturnValue in interface Reference2LongFunction<K>

Overrides:

defaultReturnValue in class AbstractReference2LongFunction<K>

Parameters:

defRetValue - the new default return value.

See Also:

Reference2LongFunction.defaultReturnValue()

put

public long put(K k,
                long v)

Description copied from interface: Reference2LongFunction

Adds a pair to the map.

Specified by:

put in interface Reference2LongFunction<K>

Overrides:

put in class AbstractReference2LongFunction<K>

Parameters:

k - the key.

v - the value.

Returns:

the old value, or the default return value if no value was present for the given key.

See Also:

Function.put(Object,Object)

clear

public void clear()

Description copied from interface: Function

Removes all associations from this function (optional operation).

Specified by:

clear in interface Function<K,Long>

Overrides:

clear in class AbstractReference2LongFunction<K>

See Also:

Map.clear()

toString

public String toString()

Overrides:

toString in class Object

removeLong

public long removeLong(Object k)

Description copied from interface: Reference2LongFunction

Removes the mapping with the given key.

Specified by:

removeLong in interface Reference2LongFunction<K>

Overrides:

removeLong in class AbstractReference2LongFunction<K>

Returns:

the old value, or the default return value if no value was present for the given key.

See Also:

Function.remove(Object)

getLong

public long getLong(Object k)

Description copied from interface: Reference2LongFunction

Returns the value to which the given key is mapped.

Specified by:

getLong in interface Reference2LongFunction<K>

Parameters:

k - the key.

Returns:

the corresponding value, or the default return value if no value was present for the given key.

See Also:

Function.get(Object)