Package org.restlet.util

Class WrapperMap<K,V>

java.lang.Object
org.restlet.util.WrapperMap<K,V>
All Implemented Interfaces:
Map<K,V>
public class WrapperMap<K,V> extends Object implements Map<K,V>
Map wrapper. Modifiable map that delegates all methods to a wrapped map. This allows an easy subclassing.
Author:
Jerome Louvel
See Also:

  • Constructor Details

    • WrapperMap

      public WrapperMap()
      Constructor.

    • WrapperMap

      public WrapperMap(Map<K,V> delegate)
      Constructor.
      Parameters:
      delegate - The delegate list.

  • Method Details

    • clear

      public void clear()
      Removes all mappings from this Map.
      Specified by:
      clear in interface Map<K,V>

    • containsKey

      public boolean containsKey(Object key)
      Returns true if this map contains a mapping for the specified key.
      Specified by:
      containsKey in interface Map<K,V>
      Parameters:
      key - The key to look up.
      Returns:
      True if this map contains a mapping for the specified key.

    • containsValue

      public boolean containsValue(Object value)
      Returns true if this map maps one or more keys to the specified value.
      Specified by:
      containsValue in interface Map<K,V>
      Parameters:
      value - The value to look up
      Returns:
      True if this map maps one or more keys to the specified value.

    • entrySet

      public Set<Map.Entry<K,V>> entrySet()
      Returns a set view of the mappings contained in this map.
      Specified by:
      entrySet in interface Map<K,V>
      Returns:
      A set view of the mappings contained in this map.

    • equals

      public boolean equals(Object o)
      Compares the specified object with this map for equality.
      Specified by:
      equals in interface Map<K,V>
      Overrides:
      equals in class Object
      Parameters:
      o - Object to be compared for equality with this map.
      Returns:
      True if the specified object is equal to this map.

    • get

      public V get(Object key)
      Returns the value to which this map maps the specified key.
      Specified by:
      get in interface Map<K,V>
      Parameters:
      key - Key whose associated value is to be returned.
      Returns:
      The value to which this map maps the specified key, or null if the map contains no mapping for this key.

    • getDelegate

      protected Map<K,V> getDelegate()
      Returns the delegate list.
      Returns:
      The delegate list.

    • hashCode

      public int hashCode()
      Returns the hash code value for this map.
      Specified by:
      hashCode in interface Map<K,V>
      Overrides:
      hashCode in class Object
      Returns:
      The hash code value for this map.

    • isEmpty

      public boolean isEmpty()
      Returns true if this map contains no key-value mappings.
      Specified by:
      isEmpty in interface Map<K,V>
      Returns:
      True if this map contains no key-value mappings.

    • keySet

      public Set<K> keySet()
      Returns a set view of the keys contained in this map.
      Specified by:
      keySet in interface Map<K,V>
      Returns:
      A set view of the keys contained in this map.

    • put

      public V put(K key, V value)
      Associates the specified value with the specified key in this map (optional operation).
      Specified by:
      put in interface Map<K,V>
      Parameters:
      key - Key with which the specified value is to be associated.
      value - Value to be associated with the specified key.
      Returns:
      The previous value associated with specified key, or null if there was no mapping for key. A null return can also indicate that the map previously associated null with the specified key, if the implementation supports null values.

    • putAll

      public void putAll(Map<? extends K,? extends V> t)
      Copies all of the mappings from the specified map to this map (optional operation).
      Specified by:
      putAll in interface Map<K,V>
      Parameters:
      t - Mappings to be stored in this map.

    • remove

      public V remove(Object key)
      Removes the mapping for this key from this map if it is present (optional operation).
      Specified by:
      remove in interface Map<K,V>
      Parameters:
      key - Key whose mapping is to be removed from the map.
      Returns:
      The previous value associated with specified key, or null if there was no mapping for key.

    • size

      public int size()
      Returns the number of key-value mappings in this map.
      Specified by:
      size in interface Map<K,V>
      Returns:
      The number of key-value mappings in this map.

    • values

      public Collection<V> values()
      Returns a collection view of the values contained in this map.
      Specified by:
      values in interface Map<K,V>
      Returns:
      A collection view of the values contained in this map.