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## org.apache.commons.collections.map
Class AbstractSortedMapDecorator

    java.lang.Object
      org.apache.commons.collections.map.AbstractMapDecorator
          org.apache.commons.collections.map.AbstractSortedMapDecorator

All Implemented Interfaces:
  java.util.Map, java.util.SortedMap

Direct Known Subclasses:
  DualTreeBidiMap.ViewMap, FixedSizeSortedMap, UnmodifiableSortedMap

    public abstract class AbstractSortedMapDecorator

extends AbstractMapDecorator
implements java.util.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 13:33:15 +0100 (Thu, 10 Apr 2008) $
Author:
  Stephen Colebourne

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map
`java.util.Map.Entry`

Field Summary

Fields inherited from class org.apache.commons.collections.map.AbstractMapDecorator
`map`

Constructor Summary
`protected` | `AbstractSortedMapDecorator()` Constructor only used in deserialization, do not use otherwise.
`` | `AbstractSortedMapDecorator(java.util.SortedMap map)` Constructor that wraps (not copies).

Method Summary
`java.util.Comparator` | `comparator()`
`java.lang.Object` | `firstKey()`
`protected java.util.SortedMap` | `getSortedMap()` Gets the map being decorated.
`java.util.SortedMap` | `headMap(java.lang.Object toKey)`
`java.lang.Object` | `lastKey()`
`java.util.SortedMap` | `subMap(java.lang.Object fromKey, java.lang.Object toKey)`
`java.util.SortedMap` | `tailMap(java.lang.Object fromKey)`

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`

Methods inherited from class java.lang.Object
`clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

Methods inherited from interface java.util.Map
`clear, containsKey, containsValue, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, values`

Constructor Detail

### AbstractSortedMapDecorator

    protected AbstractSortedMapDecorator()

  Constructor only used in deserialization, do not use otherwise.

  Since:
    Commons Collections 3.1

### AbstractSortedMapDecorator

    public AbstractSortedMapDecorator(java.util.SortedMap map)

  Constructor that wraps (not copies).

  Parameters:
    `map` - the map to decorate, must not be null
  Throws:
    `java.lang.IllegalArgumentException` - if the collection is null

Method Detail

### getSortedMap

    protected java.util.SortedMap getSortedMap()

  Gets the map being decorated.

  Returns:
    the decorated map

### comparator

    public java.util.Comparator comparator()

  Specified by:
    `comparator` in interface `java.util.SortedMap`

### firstKey

    public java.lang.Object firstKey()

  Specified by:
    `firstKey` in interface `java.util.SortedMap`

### headMap

    public java.util.SortedMap headMap(java.lang.Object toKey)

  Specified by:
    `headMap` in interface `java.util.SortedMap`

### lastKey

    public java.lang.Object lastKey()

  Specified by:
    `lastKey` in interface `java.util.SortedMap`

### subMap

    public java.util.SortedMap subMap(java.lang.Object fromKey,
                                      java.lang.Object toKey)

  Specified by:
    `subMap` in interface `java.util.SortedMap`

### tailMap

    public java.util.SortedMap tailMap(java.lang.Object fromKey)

  Specified by:
    `tailMap` in interface `java.util.SortedMap`

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