org.apache.commons.collections.map
public class TransformedSortedMap extends TransformedMap implements SortedMap
SortedMap
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 TransformedSortedMap 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 java.util.Collections#synchronizedSortedMap. This class may throw exceptions when accessed by concurrent threads without synchronization.
This class is Serializable from Commons Collections 3.1.
Since: Commons Collections 3.0
Version: $Revision: 348013 $ $Date: 2005-11-21 23:24:45 +0000 (Mon, 21 Nov 2005) $
Constructor Summary | |
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protected | TransformedSortedMap(SortedMap map, Transformer keyTransformer, Transformer valueTransformer)
Constructor that wraps (not copies).
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Method Summary | |
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Comparator | comparator() |
static SortedMap | decorate(SortedMap map, Transformer keyTransformer, Transformer valueTransformer)
Factory method to create a transforming sorted map.
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static SortedMap | decorateTransform(SortedMap map, Transformer keyTransformer, Transformer valueTransformer)
Factory method to create a transforming sorted map that will transform
existing contents of the specified map.
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Object | firstKey() |
protected SortedMap | getSortedMap()
Gets the map being decorated.
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SortedMap | headMap(Object toKey) |
Object | lastKey() |
SortedMap | subMap(Object fromKey, Object toKey) |
SortedMap | tailMap(Object fromKey) |
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 predicate to validate the keys, null means no transformation valueTransformer the predicate to validate to values, null means no transformation
Throws: IllegalArgumentException if the map is null
If there are any elements already in the map being decorated, they are NOT transformed. Constrast this with TransformedSortedMap.
Parameters: map the map to decorate, must not be null keyTransformer the predicate to validate the keys, null means no transformation valueTransformer the predicate to validate to values, null means no transformation
Throws: IllegalArgumentException if the map is null
If there are any elements already in the map being decorated, they will be transformed by this method. Constrast this with TransformedSortedMap.
Parameters: map the map to decorate, must not be null keyTransformer the transformer to use for key conversion, null means no transformation valueTransformer the transformer to use for value conversion, null means no transformation
Throws: IllegalArgumentException if map is null
Since: Commons Collections 3.2
Returns: the decorated map