Class TransformedSplitMap<J,K,U,V>   
- Type Parameters:
- J- the type of the keys to put in this map
- K- the type of the keys to get in this map
- U- the type of the values to put in this map
- V- the type of the values to get in this map
- All Implemented Interfaces:
- Serializable,- Get<K,,- V> - IterableGet<K,,- V> - Put<J,- U> 
Map to transform objects that are added.
 The Map put methods and Map.Entry setValue method are affected by this class. Thus objects must be removed or searched for using their transformed form. For example, if the transformation converts Strings to Integers, you must use the Integer form to remove objects.
 Note that TransformedMap is not synchronized and is not
 thread-safe. If you wish to use this map from multiple threads
 concurrently, you must use appropriate synchronization. The simplest approach
 is to wrap this map using Collections.synchronizedMap(Map).
 This class may throw exceptions when accessed by concurrent threads without
 synchronization.
 
 The "put" and "get" type constraints of this class are mutually independent;
 contrast with TransformedMap which,
 by virtue of its implementing Map<K, V>, must be constructed in such
 a way that its read and write parameters are generalized to a common (super-)type.
 In practice this would often mean >Object, Object>, defeating
 much of the usefulness of having parameterized types.
 
 On the downside, this class is not drop-in compatible with Map
 but is intended to be worked with either directly or by Put and
 Get generalizations.
 
- Since:
- 4.0
- See Also:
- 
Constructor SummaryConstructorsModifierConstructorDescriptionprotectedTransformedSplitMap(Map<K, V> map, Transformer<? super J, ? extends K> keyTransformer, Transformer<? super U, ? extends V> valueTransformer) Constructor that wraps (not copies).
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Method SummaryModifier and TypeMethodDescriptionprotected VcheckSetValue(U value) Override to transform the value when usingsetValue.voidclear()Removes all of the mappings from this map.Associates the specified value with the specified key in this map.voidCopies all of the mappings from the specified map to this map.static <J,K, U, V> 
 TransformedSplitMap<J, K, U, V> transformingMap(Map<K, V> map, Transformer<? super J, ? extends K> keyTransformer, Transformer<? super U, ? extends V> valueTransformer) Factory method to create a transforming map.protected KtransformKey(J object) Transforms a key.transformMap(Map<? extends J, ? extends U> map) Transforms a map.protected VtransformValue(U object) Transforms a value.Methods inherited from class org.apache.commons.collections4.splitmap.AbstractIterableGetMapDecoratorcontainsKey, containsValue, decorated, entrySet, equals, get, hashCode, isEmpty, keySet, mapIterator, remove, size, toString, values
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Constructor Details- 
TransformedSplitMapprotected TransformedSplitMap(Map<K, V> map, Transformer<? super J, ? extends K> keyTransformer, Transformer<? super U, ? extends V> valueTransformer) Constructor that wraps (not copies).If there are any elements already in the collection being decorated, they are NOT transformed. - Parameters:
- map- the map to decorate, must not be null
- keyTransformer- the transformer to use for key conversion, must not be null
- valueTransformer- the transformer to use for value conversion, must not be null
- Throws:
- NullPointerException- if map or either of the transformers is null
 
 
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Method Details- 
transformingMappublic static <J,K, TransformedSplitMap<J,U, V> K, transformingMapU, V> (Map<K, V> map, Transformer<? super J, ? extends K> keyTransformer, Transformer<? super U, ? extends V> valueTransformer) Factory method to create a transforming map.If there are any elements already in the map being decorated, they are NOT transformed. - Type Parameters:
- J- the input key type
- K- the output key type
- U- the input value type
- V- the output value type
- Parameters:
- map- the map to decorate, must not be null
- keyTransformer- the transformer to use for key conversion, must not be null
- valueTransformer- the transformer to use for value conversion, must not be null
- Returns:
- a new transformed map
- Throws:
- NullPointerException- if map or either of the transformers is null
 
- 
checkSetValueOverride to transform the value when usingsetValue.- Parameters:
- value- the value to transform
- Returns:
- the transformed value
 
- 
clear
- 
putDescription copied from interface:PutAssociates the specified value with the specified key in this map.Note that the return type is Object, rather than V as in the Map interface. See the class Javadoc for further info. - Specified by:
- putin interface- Put<J,- K> 
- Parameters:
- 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, ornullif there was no mapping forkey. (Anullreturn can also indicate that the map previously associatednullwithkey, if the implementation supportsnullvalues.)
- See Also:
 
- 
putAll
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transformKeyTransforms a key.The transformer itself may throw an exception if necessary. - Parameters:
- object- the object to transform
- Returns:
- the transformed object
 
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transformMap
- 
transformValueTransforms a value.The transformer itself may throw an exception if necessary. - Parameters:
- object- the object to transform
- Returns:
- the transformed object
 
 
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