Class NaiveTxnHashMap<K,​V>

  • All Implemented Interfaces:
    Map<K,​V>, TxnMap<K,​V>

    public final class NaiveTxnHashMap<K,​V>
    extends AbstractTxnMap<K,​V>
    • Constructor Detail

      • NaiveTxnHashMap

        public NaiveTxnHashMap​(Stm stm)
    • Method Detail

      • getLoadFactor

        public float getLoadFactor()
      • clear

        public void clear​(Txn tx)
        Description copied from interface: TxnMap
        Removes all of the mappings from this map (optional operation). The map will be empty after this call returns.
      • size

        public int size​(Txn tx)
        Description copied from interface: TxnMap
        Returns the number of key-value mappings in this map. If the map contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.
        Returns:
        the number of key-value mappings in this map
      • get

        public V get​(Txn tx,
                     Object key)
        Description copied from interface: TxnMap
        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.

        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
      • put

        public V put​(Txn tx,
                     K key,
                     V value)
        Description copied from interface: TxnMap
        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.)
        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.)
      • remove

        public V remove​(Txn tx,
                        Object key)
        Description copied from interface: TxnMap
        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.

        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.
      • toString

        public String toString​(Txn tx)
      • entrySet

        public TxnSet<Map.Entry<K,​V>> entrySet​(Txn tx)
        Description copied from interface: TxnMap
        Returns a 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.
        Returns:
        a set view of the mappings contained in this map
      • keySet

        public TxnSet<K> keySet​(Txn tx)
        Description copied from interface: TxnMap
        Returns a 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.
        Returns:
        a set view of the keys contained in this map
      • containsKey

        public boolean containsKey​(Txn tx,
                                   Object key)
        Description copied from interface: TxnMap
        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.)
        key - key whose presence in this map is to be tested
        Returns:
        true if this map contains a mapping for the specified key
      • containsValue

        public boolean containsValue​(Txn tx,
                                     Object value)
        Description copied from interface: TxnMap
        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.
        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
      • values

        public TxnCollection<V> values​(Txn tx)
        Description copied from interface: TxnMap
        Returns a 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.
        Returns:
        a collection view of the values contained in this map