Package org.eclipse.osgi.framework.util

Class CaseInsensitiveDictionaryMap<K,V>

java.lang.Object
java.util.Dictionary<K,V>
org.eclipse.osgi.framework.util.CaseInsensitiveDictionaryMap<K,V>
All Implemented Interfaces:
Map<K,V>
public class CaseInsensitiveDictionaryMap<K,V> extends Dictionary<K,V> implements Map<K,V>
CaseInsensitiveDictionaryMap classes. This class implements Dictionary and Map with the following behavior:
  • String keys are case-preserved, but the lookup operations are case-insensitive.
  • Keys and values must not be null.
Since:
3.13

  • Constructor Details

    • CaseInsensitiveDictionaryMap

      public CaseInsensitiveDictionaryMap()
      Create an empty CaseInsensitiveDictionaryMap.

    • CaseInsensitiveDictionaryMap

      public CaseInsensitiveDictionaryMap(int initialCapacity)
      Create an empty CaseInsensitiveDictionaryMap.
      Parameters:
      initialCapacity - The initial capacity.

    • CaseInsensitiveDictionaryMap

      public CaseInsensitiveDictionaryMap(Dictionary<? extends K,? extends V> dictionary)
      Create a CaseInsensitiveDictionaryMap dictionary from a Dictionary.
      Parameters:
      dictionary - The initial dictionary for this CaseInsensitiveDictionaryMap object.
      Throws:
      IllegalArgumentException - If a case-variants of a key are in the dictionary parameter.

    • CaseInsensitiveDictionaryMap

      public CaseInsensitiveDictionaryMap(Map<? extends K,? extends V> map)
      Create a CaseInsensitiveDictionaryMap dictionary from a Map.
      Parameters:
      map - The initial map for this CaseInsensitiveDictionaryMap object.
      Throws:
      IllegalArgumentException - If a case-variants of a key are in the map parameter.

  • Method Details

    • findCommonKeyIndex

      public static org.eclipse.osgi.framework.util.CaseInsensitiveDictionaryMap.CaseInsensitiveKey findCommonKeyIndex(String key)

    • initialCapacity

      protected static int initialCapacity(int size)
      Compute the initial capacity of a map for the specified number of entries based upon the load factor of 0.75f.
      Parameters:
      size - The desired number of entries.
      Returns:
      The initial capacity of a map.

    • keys

      public Enumeration<K> keys()
      Specified by:
      keys in class Dictionary<K,V>

    • elements

      public Enumeration<V> elements()
      Specified by:
      elements in class Dictionary<K,V>

    • get

      public V get(Object key)

      If the key is a String, the key is located in a case-insensitive manner.

      Specified by:
      get in interface Map<K,V>
      Specified by:
      get in class Dictionary<K,V>

    • size

      public int size()
      Specified by:
      size in interface Map<K,V>
      Specified by:
      size in class Dictionary<K,V>

    • isEmpty

      public boolean isEmpty()
      Specified by:
      isEmpty in interface Map<K,V>
      Specified by:
      isEmpty in class Dictionary<K,V>

    • put

      public V put(K key, V value)

      The key and value must be non-null.

      If the key is a String, any case-variant will be replaced.

      Specified by:
      put in interface Map<K,V>
      Specified by:
      put in class Dictionary<K,V>

    • remove

      public V remove(Object key)

      If the key is a String, the key is removed in a case-insensitive manner.

      Specified by:
      remove in interface Map<K,V>
      Specified by:
      remove in class Dictionary<K,V>

    • toString

      public String toString()
      Overrides:
      toString in class Object

    • clear

      public void clear()
      Specified by:
      clear in interface Map<K,V>

    • containsKey

      public boolean containsKey(Object key)

      If the key is a String, the key is located in a case-insensitive manner.

      Specified by:
      containsKey in interface Map<K,V>

    • containsValue

      public boolean containsValue(Object value)
      Specified by:
      containsValue in interface Map<K,V>

    • entrySet

      public Set<Map.Entry<K,V>> entrySet()
      Specified by:
      entrySet in interface Map<K,V>

    • keySet

      public Set<K> keySet()
      Specified by:
      keySet in interface Map<K,V>

    • values

      public Collection<V> values()
      Specified by:
      values in interface Map<K,V>

    • putAll

      public void putAll(Map<? extends K,? extends V> m)

      If the specified map has case-variants of a String key, only the last case-variant found while iterating over the entrySet will be present in this object.

      Specified by:
      putAll in interface Map<K,V>

    • hashCode

      public int hashCode()
      Specified by:
      hashCode in interface Map<K,V>
      Overrides:
      hashCode in class Object

    • equals

      public boolean equals(Object obj)
      Specified by:
      equals in interface Map<K,V>
      Overrides:
      equals in class Object

    • asUnmodifiableMap

      public Map<K,V> asUnmodifiableMap()
      Return an unmodifiable map wrapping this CaseInsensitiveDictionaryMap.
      Returns:
      An unmodifiable map wrapping this CaseInsensitiveDictionaryMap.

    • asUnmodifiableDictionary

      public Dictionary<K,V> asUnmodifiableDictionary()
      Return an unmodifiable dictionary wrapping this CaseInsensitiveDictionaryMap.
      Returns:
      An unmodifiable dictionary wrapping this CaseInsensitiveDictionaryMap.

    • unmodifiableDictionary

      public static <K, V> Dictionary<K,V> unmodifiableDictionary(Dictionary<? extends K,? extends V> d)
      Return an unmodifiable dictionary wrapping the specified dictionary.
      Returns:
      An unmodifiable dictionary wrapping the specified dictionary.