public final class NaiveTxnHashMap<K,V> extends AbstractTxnMap<K,V>
Modifier and Type | Class and Description |
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private class |
NaiveTxnHashMap.NaiveEntry<K,V> |
Modifier and Type | Field and Description |
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(package private) static int |
DEFAULT_INITIAL_CAPACITY |
(package private) static float |
DEFAULT_LOAD_FACTOR
The load factor used when none specified in constructor.
|
(package private) float |
loadFactor
The load factor for the hash table.
|
(package private) static int |
MAXIMUM_CAPACITY
The maximum capacity, used if a higher value is implicitly specified
by either of the constructors with arguments.
|
private TxnInteger |
size |
private TxnRef<TxnRef<NaiveTxnHashMap.NaiveEntry>[]> |
table |
private TxnInteger |
threshold |
defaultRefFactory, stm
Constructor and Description |
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NaiveTxnHashMap(Stm stm) |
Modifier and Type | Method and Description |
---|---|
(package private) void |
addEntry(Txn tx,
int hash,
K key,
V value,
int bucketIndex) |
void |
clear(Txn tx)
Removes all of the mappings from this map (optional operation).
|
boolean |
containsKey(Txn tx,
java.lang.Object key)
Returns true if this map contains a mapping for the specified
key.
|
boolean |
containsValue(Txn tx,
java.lang.Object value)
Returns true if this map maps one or more keys to the
specified value.
|
TxnSet<java.util.Map.Entry<K,V>> |
entrySet(Txn tx)
Returns a
TxnSet view of the mappings contained in this map. |
V |
get(Txn tx,
java.lang.Object key)
Returns the value to which the specified key is mapped,
or
null if this map contains no mapping for the key. |
private NaiveTxnHashMap.NaiveEntry<K,V> |
getEntry(Txn tx,
java.lang.Object key) |
float |
getLoadFactor() |
(package private) static int |
indexFor(int h,
int length) |
TxnSet<K> |
keySet(Txn tx)
Returns a
TxnSet view of the keys contained in this map. |
V |
put(Txn tx,
K key,
V value)
Associates the specified value with the specified key in this map
(optional operation).
|
V |
remove(Txn tx,
java.lang.Object key)
Removes the mapping for a key from this map if it is present
(optional operation).
|
(package private) void |
resize(Txn tx,
int newCapacity) |
int |
size(Txn tx)
Returns the number of key-value mappings in this map.
|
java.lang.String |
toString(Txn tx) |
(package private) void |
transfer(Txn tx,
TxnRef<NaiveTxnHashMap.NaiveEntry>[] newTable) |
TxnCollection<V> |
values(Txn tx)
Returns a
TxnCollection view of the values contained in this map. |
clear, containsKey, containsValue, entrySet, get, getStm, isEmpty, isEmpty, keySet, put, putAll, putAll, remove, size, toString, values
static final int DEFAULT_INITIAL_CAPACITY
static final float DEFAULT_LOAD_FACTOR
static final int MAXIMUM_CAPACITY
private final TxnInteger size
private final TxnRef<TxnRef<NaiveTxnHashMap.NaiveEntry>[]> table
private final TxnInteger threshold
final float loadFactor
public NaiveTxnHashMap(Stm stm)
public float getLoadFactor()
public void clear(Txn tx)
TxnMap
public int size(Txn tx)
TxnMap
public V get(Txn tx, java.lang.Object key)
TxnMap
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.
key
- the key whose associated value is to be returnednull
if this map contains no mapping for the keyprivate NaiveTxnHashMap.NaiveEntry<K,V> getEntry(Txn tx, java.lang.Object key)
public V put(Txn tx, K key, V value)
TxnMap
m.containsKey(k)
would return
true.)key
- key with which the specified value is to be associatedvalue
- value to be associated with the specified keyvoid resize(Txn tx, int newCapacity)
void transfer(Txn tx, TxnRef<NaiveTxnHashMap.NaiveEntry>[] newTable)
static int indexFor(int h, int length)
public V remove(Txn tx, java.lang.Object key)
TxnMap
(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.
key
- key whose mapping is to be removed from the mappublic java.lang.String toString(Txn tx)
public TxnSet<java.util.Map.Entry<K,V>> entrySet(Txn tx)
TxnMap
TxnSet
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.public TxnSet<K> keySet(Txn tx)
TxnMap
TxnSet
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.public boolean containsKey(Txn tx, java.lang.Object key)
TxnMap
key
- key whose presence in this map is to be testedpublic boolean containsValue(Txn tx, java.lang.Object value)
TxnMap
value
- value whose presence in this map is to be testedpublic TxnCollection<V> values(Txn tx)
TxnMap
TxnCollection
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.