gnu.trove.decorator

Class TObjectFloatMapDecorator<K>

  • All Implemented Interfaces:
    Externalizable, Serializable, Cloneable, Map<K,Float> 

    public class TObjectFloatMapDecorator<K>
extends AbstractMap<K,Float>
implements Map<K,Float>, Externalizable, Cloneable
    Wrapper class to make a TObjectFloatMap conform to the java.util.Map API. This class simply decorates an underlying TObjectFloatMap and translates the Object-based APIs into their Trove primitive analogs.

    Note that wrapping and unwrapping primitive values is extremely inefficient. If possible, users of this class should override the appropriate methods in this class and use a table of canonical values.

    Created: Mon Sep 23 22:07:40 PDT 2002
    See Also:
    Serialized Form

    • Constructor Detail

      • TObjectFloatMapDecorator

        public TObjectFloatMapDecorator()
        FOR EXTERNALIZATION ONLY!!

      • TObjectFloatMapDecorator

        public TObjectFloatMapDecorator(TObjectFloatMap<K> map)
        Creates a wrapper that decorates the specified primitive map.
        Parameters:
        map - the TObjectFloatMap to wrap.

    • Method Detail

      • getMap

        public TObjectFloatMap<K> getMap()
        Returns a reference to the map wrapped by this decorator.
        Returns:
        the wrapped TObjectFloatMap instance.

      • put

        public Float put(K key,
                 Float value)
        Inserts a key/value pair into the map.
        Specified by:
        put in interface  Map<K,Float>
        Overrides:
        put in class  AbstractMap<K,Float>
        Parameters:
        key - an Object value
        value - an Float value
        Returns:
        the previous value associated with key, or Integer(0) if none was found.

      • get

        public Float get(Object key)
        Retrieves the value for key
        Specified by:
        get in interface  Map<K,Float>
        Overrides:
        get in class  AbstractMap<K,Float>
        Parameters:
        key - an Object value
        Returns:
        the value of key or null if no such mapping exists.

      • clear

        public void clear()
        Empties the map.

      • remove

        public Float remove(Object key)
        Deletes a key/value pair from the map.
        Specified by:
        remove in interface  Map<K,Float>
        Overrides:
        remove in class  AbstractMap<K,Float>
        Parameters:
        key - an Object value
        Returns:
        the removed value, or Integer(0) if it was not found in the map

      • containsKey

        public boolean containsKey(Object key)
        Checks for the present of key in the keys of the map.
        Specified by:
        containsKey in interface  Map<K,Float>
        Overrides:
        containsKey in class  AbstractMap<K,Float>
        Parameters:
        key - an Object value
        Returns:
        a boolean value

      • size

        public int size()
        Returns the number of entries in the map.
        Specified by:
        size in interface  Map<K,Float>
        Overrides:
        size in class  AbstractMap<K,Float>
        Returns:
        the map's size.

      • isEmpty

        public boolean isEmpty()
        Indicates whether map has any entries.
        Specified by:
        isEmpty in interface  Map<K,Float>
        Overrides:
        isEmpty in class  AbstractMap<K,Float>
        Returns:
        true if the map is empty

      • putAll

        public void putAll(Map<? extends K,? extends Float> map)
        Copies the key/value mappings in map into this map. Note that this will be a deep copy, as storage is by primitive value.
        Specified by:
        putAll in interface  Map<K,Float>
        Overrides:
        putAll in class  AbstractMap<K,Float>
        Parameters:
        map - a Map value

      • wrapValue

        protected Float wrapValue(float k)
        Wraps a value
        Parameters:
        k - value in the underlying map
        Returns:
        an Object representation of the value

      • unwrapValue

        protected float unwrapValue(Object value)
        Unwraps a value
        Parameters:
        value - wrapped value
        Returns:
        an unwrapped representation of the value