edu.tum.cs.commons.collections
Class UnmodifiableSortedMap<K,V>
java.lang.Object
edu.tum.cs.commons.collections.UnmodifiableMap<K,V>
edu.tum.cs.commons.collections.UnmodifiableSortedMap<K,V>
- All Implemented Interfaces:
- java.io.Serializable, java.util.Map<K,V>, java.util.SortedMap<K,V>
public class UnmodifiableSortedMap<K,V>
- extends UnmodifiableMap<K,V>
- implements java.util.SortedMap<K,V>
This is a wrapper for a SortedMap
prohibiting all calls which would
modify its contents. As the construction of this class is performed in
constant time it is prefered over copying the map (which takes linear time).
Using this class is also preferred to using the unmodifiableX()
in class Collections
as they return the collection base type that
does not signal, that the object ist unmodifiable. Using the classes in this
package makes unmodifiability more explicit.
All prohibited methods throw an UnsupportedOperationException
. The
class is nearly the same as the one returned by
Collections.unmodifiableSortedMap(SortedMap)
, but by making it a
public class we can make the return value of some methods more explicit.
- Version:
- $Revision: 26283 $
- Author:
- Benjamin Hummel, $Author: juergens $
- See Also:
- Serialized Form
- Rating:
- GREEN Hash: ABDE6CF5CE63ADC67CA6BB5BB9D17737
Nested classes/interfaces inherited from interface java.util.Map |
java.util.Map.Entry<K,V> |
Constructor Summary |
UnmodifiableSortedMap(java.util.SortedMap<K,V> m)
Creates a new unmodifiable sorted map from another sorted map. |
Methods inherited from class edu.tum.cs.commons.collections.UnmodifiableMap |
clear, containsKey, containsValue, entrySet, get, isEmpty, keySet, put, putAll, remove, size, toString, values |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.util.SortedMap |
entrySet, keySet, values |
Methods inherited from interface java.util.Map |
clear, containsKey, containsValue, equals, get, hashCode, isEmpty, put, putAll, remove, size |
UnmodifiableSortedMap
public UnmodifiableSortedMap(java.util.SortedMap<K,V> m)
- Creates a new unmodifiable sorted map from another sorted map. All
modifications to the underlying map will directly be visible in this
wrapper.
comparator
public java.util.Comparator<? super K> comparator()
-
- Specified by:
comparator
in interface java.util.SortedMap<K,V>
firstKey
public K firstKey()
-
- Specified by:
firstKey
in interface java.util.SortedMap<K,V>
headMap
public UnmodifiableSortedMap<K,V> headMap(K toKey)
-
- Specified by:
headMap
in interface java.util.SortedMap<K,V>
lastKey
public K lastKey()
-
- Specified by:
lastKey
in interface java.util.SortedMap<K,V>
subMap
public UnmodifiableSortedMap<K,V> subMap(K fromKey,
K toKey)
-
- Specified by:
subMap
in interface java.util.SortedMap<K,V>
tailMap
public UnmodifiableSortedMap<K,V> tailMap(K fromKey)
-
- Specified by:
tailMap
in interface java.util.SortedMap<K,V>
TUM CCSM Commons - 2.7