Class AbstractSortedMapDecorator
- java.lang.Object
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- org.apache.commons.collections.map.AbstractMapDecorator
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- org.apache.commons.collections.map.AbstractSortedMapDecorator
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- Direct Known Subclasses:
DualTreeBidiMap.ViewMap
,FixedSizeSortedMap
,UnmodifiableSortedMap
public abstract class AbstractSortedMapDecorator extends AbstractMapDecorator implements SortedMap
Provides a base decorator that enables additional functionality to be added to a Map via decoration.Methods are forwarded directly to the decorated map.
This implementation does not perform any special processing with the map views. Instead it simply returns the set/collection from the wrapped map. This may be undesirable, for example if you are trying to write a validating implementation it would provide a loophole around the validation. But, you might want that loophole, so this class is kept simple.
- Since:
- Commons Collections 3.0
- Version:
- $Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $
- Author:
- Stephen Colebourne
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Field Summary
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Fields inherited from class org.apache.commons.collections.map.AbstractMapDecorator
map
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Constructor Summary
Constructors Modifier Constructor Description protected
AbstractSortedMapDecorator()
Constructor only used in deserialization, do not use otherwise.AbstractSortedMapDecorator(SortedMap map)
Constructor that wraps (not copies).
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Comparator
comparator()
Object
firstKey()
protected SortedMap
getSortedMap()
Gets the map being decorated.SortedMap
headMap(Object toKey)
Object
lastKey()
SortedMap
subMap(Object fromKey, Object toKey)
SortedMap
tailMap(Object fromKey)
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Methods inherited from class org.apache.commons.collections.map.AbstractMapDecorator
clear, containsKey, containsValue, entrySet, equals, get, getMap, hashCode, isEmpty, keySet, put, putAll, remove, size, toString, values
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Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface java.util.Map
clear, compute, computeIfAbsent, computeIfPresent, containsKey, containsValue, equals, forEach, get, getOrDefault, hashCode, isEmpty, merge, put, putAll, putIfAbsent, remove, remove, replace, replace, replaceAll, size
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Constructor Detail
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AbstractSortedMapDecorator
protected AbstractSortedMapDecorator()
Constructor only used in deserialization, do not use otherwise.- Since:
- Commons Collections 3.1
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AbstractSortedMapDecorator
public AbstractSortedMapDecorator(SortedMap map)
Constructor that wraps (not copies).- Parameters:
map
- the map to decorate, must not be null- Throws:
IllegalArgumentException
- if the collection is null
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Method Detail
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getSortedMap
protected SortedMap getSortedMap()
Gets the map being decorated.- Returns:
- the decorated map
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comparator
public Comparator comparator()
- Specified by:
comparator
in interfaceSortedMap
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