Interface TObjectByteMap<K>
- All Known Implementing Classes:
TObjectByteCustomHashMap
,TObjectByteHashMap
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Method Summary
Modifier and TypeMethodDescriptionbyte
adjustOrPutValue
(K key, byte adjust_amount, byte put_amount) Adjusts the primitive value mapped to the key if the key is present in the map.boolean
adjustValue
(K key, byte amount) Adjusts the primitive value mapped to key.void
clear()
Removes all of the mappings from this map (optional operation).boolean
containsKey
(Object key) Returns true if this map contains a mapping for the specified key.boolean
containsValue
(byte value) Returns true if this map maps one or more keys to the specified value.boolean
Compares the specified object with this map for equality.boolean
forEachEntry
(TObjectByteProcedure<? super K> procedure) Executes procedure for each key/value entry in the map.boolean
forEachKey
(TObjectProcedure<? super K> procedure) Executes procedure for each key in the map.boolean
forEachValue
(TByteProcedure procedure) Executes procedure for each value in the map.byte
Returns the value to which the specified key is mapped, ornull
if this map contains no mapping for the key.byte
Returns the value that will be returned fromget(java.lang.Object)
orput(K, byte)
if no entry exists for a given key.int
hashCode()
Returns the hash code value for this map.boolean
Increments the primitive value mapped to key by 1boolean
isEmpty()
Returns true if this map contains no key-value mappings.iterator()
Returns a TObjectByteIterator with access to this map's keys and values.Object[]
keys()
Returns a copy of the keys of the map as an array.K[]
Returns a copy of the keys of the map as an array.keySet()
Returns aSet
view of the keys contained in this map.byte
Associates the specified value with the specified key in this map (optional operation).void
putAll
(TObjectByteMap<? extends K> map) Put all the entries from the given map into this map.void
Copies all of the mappings from the specified map to this map (optional operation).byte
putIfAbsent
(K key, byte value) Inserts a key/value pair into the map if the specified key is not already associated with a value.byte
Removes the mapping for a key from this map if it is present (optional operation).boolean
retainEntries
(TObjectByteProcedure<? super K> procedure) Retains only those entries in the map for which the procedure returns a true value.int
size()
Returns the number of key-value mappings in this map.void
transformValues
(TByteFunction function) Transform the values in this map using function.Returns aTByteCollection
view of the values contained in this map.byte[]
values()
Returns the values of the map as an array of byte values.byte[]
values
(byte[] array) Returns the values of the map using an existing array.
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Method Details
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getNoEntryValue
byte getNoEntryValue()Returns the value that will be returned fromget(java.lang.Object)
orput(K, byte)
if no entry exists for a given key. The default value is generally zero, but can be changed during construction of the collection.- Returns:
- the value that represents a null value in this collection.
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size
int size()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
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isEmpty
boolean isEmpty()Returns true if this map contains no key-value mappings.- Returns:
- true if this map contains no key-value mappings
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containsKey
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.)- Parameters:
key
- key whose presence in this map is to be tested- Returns:
- true if this map contains a mapping for the specified key
- Throws:
ClassCastException
- if the key is of an inappropriate type for this map (optional)NullPointerException
- if the specified key is null and this map does not permit null keys (optional)
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containsValue
boolean containsValue(byte value) 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==no_entry_value ? v==no_entry_value : value.equals(v)). This operation will probably require time linear in the map size for most implementations of the Map interface. Note that no_entry_value is the result ofgetNoEntryValue()
and represents null for this map instance.- Parameters:
value
- byte value whose presence in this map is to be tested- Returns:
- true if this map maps one or more keys to the specified value
- Throws:
ClassCastException
- if the value is of an inappropriate type for this map (optional)NullPointerException
- if the specified value is null and this map does not permit null values (optional)
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get
Returns the value to which the specified key is mapped, ornull
if this map contains no mapping for the key.More formally, if this map contains a mapping from a key
k
to a valuev
such that(key==null ? k==null : key.equals(k))
, then this method returnsv
; otherwise it returnsnull
. (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 tonull
. ThecontainsKey
operation may be used to distinguish these two cases.- Parameters:
key
- the key whose associated value is to be returned- Returns:
- the byte value to which the specified key is mapped, or
null
if this map contains no mapping for the key - Throws:
ClassCastException
- if the key is of an inappropriate type for this map (optional)NullPointerException
- if the specified key is null and this map does not permit null keys (optional)
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put
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 ifm.containsKey(k)
would return true.)- Parameters:
key
- key with which the specified value is to be associatedvalue
- an byte value value to be associated with the specified key- Returns:
- the previous value associated with key, or no_entry_value if there was no mapping for key. (A no_entry_value return can also indicate that the map previously associated null with key, if the implementation supports null values.)
- Throws:
UnsupportedOperationException
- if the put operation is not supported by this mapClassCastException
- if the class of the specified key or value prevents it from being stored in this mapNullPointerException
- if the specified key or value is null and this map does not permit null keys or valuesIllegalArgumentException
- if some property of the specified key or value prevents it from being stored in this map- See Also:
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putIfAbsent
Inserts a key/value pair into the map if the specified key is not already associated with a value.- Parameters:
key
- key with which the specified value is to be associatedvalue
- an byte value to be associated with the specified key- Returns:
- the previous value associated with key, or the "no entry" value
if none was found (see
getNoEntryValue()
).
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remove
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.
- Parameters:
key
- key whose mapping is to be removed from the map- Returns:
- the previous byte value associated with key, or null if there was no mapping for key.
- Throws:
UnsupportedOperationException
- if the remove operation is not supported by this mapClassCastException
- if the key is of an inappropriate type for this map (optional)NullPointerException
- if the specified key is null and this map does not permit null keys (optional)
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putAll
Copies all of the mappings from the specified map to this map (optional operation). The effect of this call is equivalent to that of callingput(k, v)
on this map once for each mapping from key k to value v in the specified map. The behavior of this operation is undefined if the specified map is modified while the operation is in progress.- Parameters:
m
- mappings to be stored in this map- Throws:
UnsupportedOperationException
- if the putAll operation is not supported by this mapClassCastException
- if the class of a key or value in the specified map prevents it from being stored in this mapNullPointerException
- if the specified map is null, or if this map does not permit null keys or values, and the specified map contains null keys or valuesIllegalArgumentException
- if some property of a key or value in the specified map prevents it from being stored in this map
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putAll
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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clear
void clear()Removes all of the mappings from this map (optional operation). The map will be empty after this call returns.- Throws:
UnsupportedOperationException
- if the clear operation is not supported by this map
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keySet
Returns aSet
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
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keys
Object[] keys()Returns a copy of the keys of the map as an array. Changes to the array of keys will not be reflected in the map nor vice-versa.- Returns:
- a copy of the keys of the map as an array.
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keys
Returns a copy of the keys of the map as an array. Changes to the array of keys will not be reflected in the map nor vice-versa.- Parameters:
array
- 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 type is allocated for this purpose.- Returns:
- the keys of the map as an array.
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valueCollection
TByteCollection valueCollection()Returns aTByteCollection
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 TByteIterator.remove, TByteCollection.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
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values
byte[] values()Returns the values of the map as an array of byte values. Changes to the array of values will not be reflected in the map nor vice-versa.- Returns:
- the values of the map as an array of byte values.
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values
byte[] values(byte[] array) Returns the values of the map using an existing array. Changes to the array of values will not be reflected in the map nor vice-versa.- Parameters:
array
- 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 type is allocated for this purpose.- Returns:
- the values of the map as an array of byte values.
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iterator
TObjectByteIterator<K> iterator()Returns a TObjectByteIterator with access to this map's keys and values.- Returns:
- a TObjectByteIterator with access to this map's keys and values.
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increment
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
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
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
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forEachKey
Executes procedure for each key in the map.- Parameters:
procedure
- aTObjectProcedure
value- Returns:
- false if the loop over the keys terminated because the procedure returned false for some key.
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forEachValue
Executes procedure for each value in the map.- Parameters:
procedure
- aTByteProcedure
value- Returns:
- false if the loop over the values terminated because the procedure returned false for some value.
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forEachEntry
Executes procedure for each key/value entry in the map.- Parameters:
procedure
- aTOObjectByteProcedure
value- Returns:
- false if the loop over the entries terminated because the procedure returned false for some entry.
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transformValues
Transform the values in this map using function.- Parameters:
function
- aTByteFunction
value
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retainEntries
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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equals
Compares the specified object with this map for equality. Returns true if the given object is also a map and the two maps represent the same mappings. More formally, two maps m1 and m2 represent the same mappings if m1.entrySet().equals(m2.entrySet()). This ensures that the equals method works properly across different implementations of the Map interface. -
hashCode
int hashCode()Returns the hash code value for this map. The hash code of a map is defined to be the sum of the hash codes of each entry in the map's entrySet() view. This ensures that m1.equals(m2) implies that m1.hashCode()==m2.hashCode() for any two maps m1 and m2, as required by the general contract ofObject.hashCode()
.
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