it.unimi.dsi.fastutil.bytes
Class Byte2ByteAVLTreeMap

java.lang.Object
  extended by it.unimi.dsi.fastutil.bytes.AbstractByte2ByteFunction
      extended by it.unimi.dsi.fastutil.bytes.AbstractByte2ByteMap
          extended by it.unimi.dsi.fastutil.bytes.AbstractByte2ByteSortedMap
              extended by it.unimi.dsi.fastutil.bytes.Byte2ByteAVLTreeMap
All Implemented Interfaces:
Byte2ByteFunction, Byte2ByteMap, Byte2ByteSortedMap, Function<Byte,Byte>, Serializable, Cloneable, Map<Byte,Byte>, SortedMap<Byte,Byte>

public class Byte2ByteAVLTreeMap
extends AbstractByte2ByteSortedMap
implements Serializable, Cloneable

A type-specific AVL tree map with a fast, small-footprint implementation.

The iterators provided by the views of this class are type-specific bidirectional iterators. Moreover, the iterator returned by iterator() can be safely cast to a type-specific list iterator.

See Also:
Serialized Form

Nested Class Summary
 
Nested classes/interfaces inherited from class it.unimi.dsi.fastutil.bytes.AbstractByte2ByteMap
AbstractByte2ByteMap.BasicEntry
 
Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.bytes.Byte2ByteSortedMap
Byte2ByteSortedMap.FastSortedEntrySet
 
Nested classes/interfaces inherited from interface it.unimi.dsi.fastutil.bytes.Byte2ByteMap
Byte2ByteMap.FastEntrySet
 
Field Summary
static long serialVersionUID
           
 
Constructor Summary
Byte2ByteAVLTreeMap()
          Creates a new empty tree map.
Byte2ByteAVLTreeMap(byte[] k, byte[] v)
          Creates a new tree map using the elements of two parallel arrays.
Byte2ByteAVLTreeMap(byte[] k, byte[] v, Comparator<? super Byte> c)
          Creates a new tree map using the elements of two parallel arrays and the given comparator.
Byte2ByteAVLTreeMap(Byte2ByteMap m)
          Creates a new tree map copying a given map.
Byte2ByteAVLTreeMap(Byte2ByteSortedMap m)
          Creates a new tree map copying a given sorted map (and its Comparator).
Byte2ByteAVLTreeMap(Comparator<? super Byte> c)
          Creates a new empty tree map with the given comparator.
Byte2ByteAVLTreeMap(Map<? extends Byte,? extends Byte> m)
          Creates a new tree map copying a given map.
Byte2ByteAVLTreeMap(SortedMap<Byte,Byte> m)
          Creates a new tree map copying a given sorted map (and its Comparator).
 
Method Summary
 ObjectSortedSet<Byte2ByteMap.Entry> byte2ByteEntrySet()
          Returns a type-specific set view of the mappings contained in this map.
 void clear()
          Removes all associations from this function (optional operation).
 Object clone()
          Returns a deep copy of this tree map.
 ByteComparator comparator()
          Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.
 boolean containsKey(byte k)
          Checks whether the given value is contained in AbstractByte2ByteMap.keySet().
 boolean containsValue(byte v)
          Checks whether the given value is contained in AbstractByte2ByteMap.values().
 byte firstByteKey()
           
 byte get(byte k)
          Returns the value to which the given key is mapped.
 Byte2ByteSortedMap headMap(byte to)
          Returns a view of the portion of this sorted map whose keys are strictly less than toKey.
 boolean isEmpty()
           
 ByteSortedSet keySet()
          Returns a type-specific sorted set view of the keys contained in this map.
 byte lastByteKey()
           
 byte put(byte k, byte v)
          Adds a pair to the map.
 Byte put(Byte ok, Byte ov)
          Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
 byte remove(byte k)
          Removes the mapping with the given key.
 Byte remove(Object ok)
          Delegates to the corresponding type-specific method, taking care of returning null on a missing key.
 int size()
          Returns the intended number of keys in this function, or -1 if no such number exists.
 Byte2ByteSortedMap subMap(byte from, byte to)
          Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.
 Byte2ByteSortedMap tailMap(byte from)
          Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.
 ByteCollection values()
          Returns a type-specific collection view of the values contained in this map.
 
Methods inherited from class it.unimi.dsi.fastutil.bytes.AbstractByte2ByteSortedMap
entrySet, firstKey, headMap, lastKey, subMap, tailMap
 
Methods inherited from class it.unimi.dsi.fastutil.bytes.AbstractByte2ByteMap
containsValue, equals, hashCode, putAll, toString
 
Methods inherited from class it.unimi.dsi.fastutil.bytes.AbstractByte2ByteFunction
containsKey, defaultReturnValue, defaultReturnValue, get
 
Methods inherited from class java.lang.Object
getClass, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface it.unimi.dsi.fastutil.bytes.Byte2ByteFunction
defaultReturnValue, defaultReturnValue
 
Methods inherited from interface it.unimi.dsi.fastutil.Function
containsKey, get
 
Methods inherited from interface java.util.Map
containsKey, containsValue, equals, get, hashCode, putAll
 
Methods inherited from interface java.util.Map
containsKey, containsValue, equals, get, hashCode, putAll
 

Field Detail

serialVersionUID

public static final long serialVersionUID
See Also:
Constant Field Values
Constructor Detail

Byte2ByteAVLTreeMap

public Byte2ByteAVLTreeMap()
Creates a new empty tree map.


Byte2ByteAVLTreeMap

public Byte2ByteAVLTreeMap(Comparator<? super Byte> c)
Creates a new empty tree map with the given comparator.

Parameters:
c - a (possibly type-specific) comparator.

Byte2ByteAVLTreeMap

public Byte2ByteAVLTreeMap(Map<? extends Byte,? extends Byte> m)
Creates a new tree map copying a given map.

Parameters:
m - a Map to be copied into the new tree map.

Byte2ByteAVLTreeMap

public Byte2ByteAVLTreeMap(SortedMap<Byte,Byte> m)
Creates a new tree map copying a given sorted map (and its Comparator).

Parameters:
m - a SortedMap to be copied into the new tree map.

Byte2ByteAVLTreeMap

public Byte2ByteAVLTreeMap(Byte2ByteMap m)
Creates a new tree map copying a given map.

Parameters:
m - a type-specific map to be copied into the new tree map.

Byte2ByteAVLTreeMap

public Byte2ByteAVLTreeMap(Byte2ByteSortedMap m)
Creates a new tree map copying a given sorted map (and its Comparator).

Parameters:
m - a type-specific sorted map to be copied into the new tree map.

Byte2ByteAVLTreeMap

public Byte2ByteAVLTreeMap(byte[] k,
                           byte[] v,
                           Comparator<? super Byte> c)
Creates a new tree map using the elements of two parallel arrays and the given comparator.

Parameters:
k - the array of keys of the new tree map.
v - the array of corresponding values in the new tree map.
c - a (possibly type-specific) comparator.
Throws:
IllegalArgumentException - if k and v have different lengths.

Byte2ByteAVLTreeMap

public Byte2ByteAVLTreeMap(byte[] k,
                           byte[] v)
Creates a new tree map using the elements of two parallel arrays.

Parameters:
k - the array of keys of the new tree map.
v - the array of corresponding values in the new tree map.
Throws:
IllegalArgumentException - if k and v have different lengths.
Method Detail

put

public byte put(byte k,
                byte v)
Description copied from interface: Byte2ByteFunction
Adds a pair to the map.

Specified by:
put in interface Byte2ByteFunction
Overrides:
put in class AbstractByte2ByteFunction
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)

remove

public byte remove(byte k)
Description copied from interface: Byte2ByteFunction
Removes the mapping with the given key.

Specified by:
remove in interface Byte2ByteFunction
Overrides:
remove in class AbstractByte2ByteFunction
Returns:
the old value, or the default return value if no value was present for the given key.
See Also:
Function.remove(Object)

put

public Byte put(Byte ok,
                Byte ov)
Description copied from class: AbstractByte2ByteFunction
Delegates to the corresponding type-specific method, taking care of returning null on a missing key.

This method must check whether the provided key is in the map using containsKey(). Thus, it probes the map twice. Implementors of subclasses should override it with a more efficient method.

Specified by:
put in interface Function<Byte,Byte>
Specified by:
put in interface Map<Byte,Byte>
Overrides:
put in class AbstractByte2ByteFunction
Parameters:
ok - the key.
ov - the value.
Returns:
the old value, or null if no value was present for the given key.
See Also:
Map.put(Object,Object)

remove

public Byte remove(Object ok)
Description copied from class: AbstractByte2ByteFunction
Delegates to the corresponding type-specific method, taking care of returning null on a missing key.

This method must check whether the provided key is in the map using containsKey(). Thus, it probes the map twice. Implementors of subclasses should override it with a more efficient method.

Specified by:
remove in interface Function<Byte,Byte>
Specified by:
remove in interface Map<Byte,Byte>
Overrides:
remove in class AbstractByte2ByteFunction
Returns:
the old value, or null if no value was present for the given key.
See Also:
Map.remove(Object)

containsValue

public boolean containsValue(byte v)
Description copied from class: AbstractByte2ByteMap
Checks whether the given value is contained in AbstractByte2ByteMap.values().

Specified by:
containsValue in interface Byte2ByteMap
Overrides:
containsValue in class AbstractByte2ByteMap
See Also:
Map.containsValue(Object)

clear

public void clear()
Description copied from interface: Function
Removes all associations from this function (optional operation).

Specified by:
clear in interface Function<Byte,Byte>
Specified by:
clear in interface Map<Byte,Byte>
Overrides:
clear in class AbstractByte2ByteFunction
See Also:
Map.clear()

containsKey

public boolean containsKey(byte k)
Description copied from class: AbstractByte2ByteMap
Checks whether the given value is contained in AbstractByte2ByteMap.keySet().

Specified by:
containsKey in interface Byte2ByteFunction
Overrides:
containsKey in class AbstractByte2ByteMap
See Also:
Function.containsKey(Object)

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<Byte,Byte>
Specified by:
size in interface Map<Byte,Byte>
Returns:
the intended number of keys in this function, or -1 if that number is not available.

isEmpty

public boolean isEmpty()
Specified by:
isEmpty in interface Map<Byte,Byte>
Overrides:
isEmpty in class AbstractByte2ByteMap

get

public byte get(byte k)
Description copied from interface: Byte2ByteFunction
Returns the value to which the given key is mapped.

Specified by:
get in interface Byte2ByteFunction
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)

firstByteKey

public byte firstByteKey()
Specified by:
firstByteKey in interface Byte2ByteSortedMap
See Also:
SortedMap.firstKey()

lastByteKey

public byte lastByteKey()
Specified by:
lastByteKey in interface Byte2ByteSortedMap
See Also:
SortedMap.lastKey()

byte2ByteEntrySet

public ObjectSortedSet<Byte2ByteMap.Entry> byte2ByteEntrySet()
Description copied from interface: Byte2ByteMap
Returns a type-specific set view of the mappings contained in this map.

This method is necessary because there is no inheritance along type parameters: it is thus impossible to strengthen Byte2ByteMap.entrySet() so that it returns an ObjectSet of objects of type Byte2ByteMap.Entry (the latter makes it possible to access keys and values with type-specific methods).

Specified by:
byte2ByteEntrySet in interface Byte2ByteMap
Specified by:
byte2ByteEntrySet in interface Byte2ByteSortedMap
Returns:
a type-specific set view of the mappings contained in this map.
See Also:
Byte2ByteMap.entrySet()

keySet

public ByteSortedSet keySet()
Returns a type-specific sorted set view of the keys contained in this map.

In addition to the semantics of Map.keySet(), you can safely cast the set returned by this call to a type-specific sorted set interface.

Specified by:
keySet in interface Byte2ByteMap
Specified by:
keySet in interface Byte2ByteSortedMap
Specified by:
keySet in interface Map<Byte,Byte>
Overrides:
keySet in class AbstractByte2ByteSortedMap
Returns:
a type-specific sorted set view of the keys contained in this map.
See Also:
Map.keySet()

values

public ByteCollection values()
Returns a type-specific collection view of the values contained in this map.

In addition to the semantics of Map.values(), you can safely cast the collection returned by this call to a type-specific collection interface.

Specified by:
values in interface Byte2ByteMap
Specified by:
values in interface Byte2ByteSortedMap
Specified by:
values in interface Map<Byte,Byte>
Overrides:
values in class AbstractByte2ByteSortedMap
Returns:
a type-specific collection view of the values contained in this map.
See Also:
Map.values()

comparator

public ByteComparator comparator()
Description copied from interface: Byte2ByteSortedMap
Returns the comparator associated with this sorted set, or null if it uses its keys' natural ordering.

Note that this specification strengthens the one given in SortedMap.comparator().

Specified by:
comparator in interface Byte2ByteSortedMap
Specified by:
comparator in interface SortedMap<Byte,Byte>
See Also:
SortedMap.comparator()

headMap

public Byte2ByteSortedMap headMap(byte to)
Description copied from interface: Byte2ByteSortedMap
Returns a view of the portion of this sorted map whose keys are strictly less than toKey.

Specified by:
headMap in interface Byte2ByteSortedMap
See Also:
SortedMap.headMap(Object)

tailMap

public Byte2ByteSortedMap tailMap(byte from)
Description copied from interface: Byte2ByteSortedMap
Returns a view of the portion of this sorted map whose keys are greater than or equal to fromKey.

Specified by:
tailMap in interface Byte2ByteSortedMap
See Also:
SortedMap.tailMap(Object)

subMap

public Byte2ByteSortedMap subMap(byte from,
                                 byte to)
Description copied from interface: Byte2ByteSortedMap
Returns a view of the portion of this sorted map whose keys range from fromKey, inclusive, to toKey, exclusive.

Specified by:
subMap in interface Byte2ByteSortedMap
See Also:
SortedMap.subMap(Object,Object)

clone

public Object clone()
Returns a deep copy of this tree map.

This method performs a deep copy of this tree map; the data stored in the set, however, is not cloned. Note that this makes a difference only for object keys.

Overrides:
clone in class Object
Returns:
a deep copy of this tree map.