Package gnu.trove
Class TObjectLongHashMap<K>
- java.lang.Object
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- gnu.trove.THash
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- gnu.trove.TObjectHash<K>
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- gnu.trove.TObjectLongHashMap<K>
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- All Implemented Interfaces:
TObjectHashingStrategy<K>,java.io.Externalizable,java.io.Serializable,java.lang.Cloneable
public class TObjectLongHashMap<K> extends TObjectHash<K> implements java.io.Externalizable
An open addressed Map implementation for Object keys and long values. Created: Sun Nov 4 08:52:45 2001- Author:
- Eric D. Friedman
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected long[]_valuesthe values of the map-
Fields inherited from class gnu.trove.TObjectHash
_hashingStrategy, _set, FREE, REMOVED
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Fields inherited from class gnu.trove.THash
_autoCompactionFactor, _autoCompactRemovesRemaining, _free, _loadFactor, _maxSize, _size, DEFAULT_INITIAL_CAPACITY, DEFAULT_LOAD_FACTOR
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Constructor Summary
Constructors Constructor Description TObjectLongHashMap()Creates a newTObjectLongHashMapinstance with the default capacity and load factor.TObjectLongHashMap(int initialCapacity)Creates a newTObjectLongHashMapinstance with a prime capacity equal to or greater than initialCapacity and with the default load factor.TObjectLongHashMap(int initialCapacity, float loadFactor)Creates a newTObjectLongHashMapinstance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.TObjectLongHashMap(int initialCapacity, float loadFactor, TObjectHashingStrategy<K> strategy)Creates a newTObjectLongHashMapinstance with a prime value at or near the specified capacity and load factor.TObjectLongHashMap(int initialCapacity, TObjectHashingStrategy<K> strategy)Creates a newTObjectLongHashMapinstance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.TObjectLongHashMap(TObjectHashingStrategy<K> strategy)Creates a newTObjectLongHashMapinstance with the default capacity and load factor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description longadjustOrPutValue(K key, long adjust_amount, long put_amount)Adjusts the primitive value mapped to the key if the key is present in the map.booleanadjustValue(K key, long amount)Adjusts the primitive value mapped to key.voidclear()Empties the map.TObjectLongHashMap<K>clone()booleancontainsKey(K key)checks for the present of key in the keys of the map.booleancontainsValue(long val)checks for the presence of val in the values of the map.booleanequals(java.lang.Object other)Compares this map with another map for equality of their stored entries.booleanforEachEntry(TObjectLongProcedure<K> procedure)Executes procedure for each key/value entry in the map.booleanforEachKey(TObjectProcedure<K> procedure)Executes procedure for each key in the map.booleanforEachValue(TLongProcedure procedure)Executes procedure for each value in the map.longget(K key)retrieves the value for keylong[]getValues()Returns the values of the map.booleanincrement(K key)Increments the primitive value mapped to key by 1TObjectLongIterator<K>iterator()java.lang.Object[]keys()returns the keys of the map.K[]keys(K[] a)returns the keys of the map.longput(K key, long value)Inserts a key/value pair into the map.voidputAll(TObjectLongHashMap<K> map)Put all the entries from the given map into this map.longputIfAbsent(K key, long value)Inserts a key/value pair into the map if the specified key is not already associated with a value.voidreadExternal(java.io.ObjectInput in)protected voidrehash(int newCapacity)rehashes the map to the new capacity.longremove(K key)Deletes a key/value pair from the map.protected voidremoveAt(int index)removes the mapping at index from the map.booleanretainEntries(TObjectLongProcedure<K> procedure)Retains only those entries in the map for which the procedure returns a true value.protected intsetUp(int initialCapacity)initializes the hashtable to a prime capacity which is at least initialCapacity + 1.java.lang.StringtoString()voidtransformValues(TLongFunction function)Transform the values in this map using function.voidwriteExternal(java.io.ObjectOutput out)-
Methods inherited from class gnu.trove.TObjectHash
capacity, computeHashCode, contains, equals, forEach, index, insertionIndex, throwObjectContractViolation
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Methods inherited from class gnu.trove.THash
calculateGrownCapacity, compact, ensureCapacity, getAutoCompactionFactor, isEmpty, postInsertHook, reenableAutoCompaction, setAutoCompactionFactor, size, tempDisableAutoCompaction, trimToSize
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Constructor Detail
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TObjectLongHashMap
public TObjectLongHashMap()
Creates a newTObjectLongHashMapinstance with the default capacity and load factor.
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TObjectLongHashMap
public TObjectLongHashMap(int initialCapacity)
Creates a newTObjectLongHashMapinstance with a prime capacity equal to or greater than initialCapacity and with the default load factor.- Parameters:
initialCapacity- anintvalue
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TObjectLongHashMap
public TObjectLongHashMap(int initialCapacity, float loadFactor)Creates a newTObjectLongHashMapinstance with a prime capacity equal to or greater than initialCapacity and with the specified load factor.- Parameters:
initialCapacity- anintvalueloadFactor- afloatvalue
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TObjectLongHashMap
public TObjectLongHashMap(TObjectHashingStrategy<K> strategy)
Creates a newTObjectLongHashMapinstance with the default capacity and load factor.- Parameters:
strategy- used to compute hash codes and to compare keys.
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TObjectLongHashMap
public TObjectLongHashMap(int initialCapacity, TObjectHashingStrategy<K> strategy)Creates a newTObjectLongHashMapinstance whose capacity is the next highest prime above initialCapacity + 1 unless that value is already prime.- Parameters:
initialCapacity- anintvaluestrategy- used to compute hash codes and to compare keys.
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TObjectLongHashMap
public TObjectLongHashMap(int initialCapacity, float loadFactor, TObjectHashingStrategy<K> strategy)Creates a newTObjectLongHashMapinstance with a prime value at or near the specified capacity and load factor.- Parameters:
initialCapacity- used to find a prime capacity for the table.loadFactor- used to calculate the threshold over which rehashing takes place.strategy- used to compute hash codes and to compare keys.
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Method Detail
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iterator
public TObjectLongIterator<K> iterator()
- Returns:
- an iterator over the entries in this map
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setUp
protected int setUp(int initialCapacity)
initializes the hashtable to a prime capacity which is at least initialCapacity + 1.- Overrides:
setUpin classTObjectHash<K>- Parameters:
initialCapacity- anintvalue- Returns:
- the actual capacity chosen
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put
public long put(K key, long value)
Inserts a key/value pair into the map.- Parameters:
key- anObjectvaluevalue- anlongvalue- Returns:
- the previous value associated with key, or (long)0 if none was found.
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putIfAbsent
public long putIfAbsent(K key, long value)
Inserts a key/value pair into the map if the specified key is not already associated with a value.- Parameters:
key- anObjectvaluevalue- anlongvalue- Returns:
- the previous value associated with key, or (long)0 if none was found.
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putAll
public void putAll(TObjectLongHashMap<K> map)
Put all the entries from the given map into this map.- Parameters:
map- The map from which entries will be obtained to put into this map.
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rehash
protected void rehash(int newCapacity)
rehashes the map to the new capacity.
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get
public long get(K key)
retrieves the value for key- Parameters:
key- anObjectvalue- Returns:
- the value of key or (long)0 if no such mapping exists.
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remove
public long remove(K key)
Deletes a key/value pair from the map.- Parameters:
key- anObjectvalue- Returns:
- an
longvalue or (long)0 if no such mapping exists.
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equals
public boolean equals(java.lang.Object other)
Compares this map with another map for equality of their stored entries.- Overrides:
equalsin classjava.lang.Object- Parameters:
other- anObjectvalue- Returns:
- a
booleanvalue
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clone
public TObjectLongHashMap<K> clone()
- Overrides:
clonein classTObjectHash<K>- Returns:
- a shallow clone of this collection
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removeAt
protected void removeAt(int index)
removes the mapping at index from the map.- Overrides:
removeAtin classTObjectHash<K>- Parameters:
index- anintvalue
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getValues
public long[] getValues()
Returns the values of the map.- Returns:
- a
Collectionvalue
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keys
public java.lang.Object[] keys()
returns the keys of the map.- Returns:
- a
Setvalue
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keys
public K[] keys(K[] a)
returns the keys of the map.- Parameters:
a- the array into which the elements of the list are to be stored, if it is big enough; otherwise, a new array of the same runtime type is allocated for this purpose.- Returns:
- a
Setvalue
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containsValue
public boolean containsValue(long val)
checks for the presence of val in the values of the map.- Parameters:
val- anlongvalue- Returns:
- a
booleanvalue
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containsKey
public boolean containsKey(K key)
checks for the present of key in the keys of the map.- Parameters:
key- anObjectvalue- Returns:
- a
booleanvalue
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forEachKey
public boolean forEachKey(TObjectProcedure<K> procedure)
Executes procedure for each key in the map.- Parameters:
procedure- aTObjectProcedurevalue- Returns:
- false if the loop over the keys terminated because the procedure returned false for some key.
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forEachValue
public boolean forEachValue(TLongProcedure procedure)
Executes procedure for each value in the map.- Parameters:
procedure- aTLongProcedurevalue- Returns:
- false if the loop over the values terminated because the procedure returned false for some value.
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forEachEntry
public boolean forEachEntry(TObjectLongProcedure<K> procedure)
Executes procedure for each key/value entry in the map.- Parameters:
procedure- aTOObjectLongProcedurevalue- Returns:
- false if the loop over the entries terminated because the procedure returned false for some entry.
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retainEntries
public boolean retainEntries(TObjectLongProcedure<K> procedure)
Retains only those entries in the map for which the procedure returns a true value.- Parameters:
procedure- determines which entries to keep- Returns:
- true if the map was modified.
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transformValues
public void transformValues(TLongFunction function)
Transform the values in this map using function.- Parameters:
function- aTLongFunctionvalue
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increment
public boolean increment(K key)
Increments the primitive value mapped to key by 1- Parameters:
key- the key of the value to increment- Returns:
- true if a mapping was found and modified.
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adjustValue
public boolean adjustValue(K key, long amount)
Adjusts the primitive value mapped to key.- Parameters:
key- the key of the value to incrementamount- the amount to adjust the value by.- Returns:
- true if a mapping was found and modified.
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adjustOrPutValue
public long adjustOrPutValue(K key, long adjust_amount, long put_amount)
Adjusts the primitive value mapped to the key if the key is present in the map. Otherwise, the initial_value is put in the map.- Parameters:
key- the key of the value to incrementadjust_amount- the amount to adjust the value byput_amount- the value put into the map if the key is not initial present- Returns:
- the value present in the map after the adjustment or put operation
- Since:
- 2.0b1
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writeExternal
public void writeExternal(java.io.ObjectOutput out) throws java.io.IOException- Specified by:
writeExternalin interfacejava.io.Externalizable- Overrides:
writeExternalin classTObjectHash<K>- Throws:
java.io.IOException
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readExternal
public void readExternal(java.io.ObjectInput in) throws java.io.IOException, java.lang.ClassNotFoundException- Specified by:
readExternalin interfacejava.io.Externalizable- Overrides:
readExternalin classTObjectHash<K>- Throws:
java.io.IOExceptionjava.lang.ClassNotFoundException
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toString
public java.lang.String toString()
- Overrides:
toStringin classjava.lang.Object
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