Class EnumeratedMap

java.lang.Object
org.apache.commons.el.EnumeratedMap
All Implemented Interfaces:
Map

public abstract class EnumeratedMap extends Object implements Map

This is a Map implementation driven by a data source that only provides an enumeration of keys and a getValue(key) method. This class must be subclassed to implement those methods.

Some of the methods may incur a performance penalty that involves enumerating the entire data source. In these cases, the Map will try to save the results of that enumeration, but only if the underlying data source is immutable.

Version:
$Change: 181177 $$DateTime: 2001/06/26 08:45:09 $$Author: luehe $
Author:
Nathan Abramson - Art Technology Group
  • Field Details

    • mMap

      Map mMap
  • Constructor Details

    • EnumeratedMap

      public EnumeratedMap()
  • Method Details

    • clear

      public void clear()
      Specified by:
      clear in interface Map
    • containsKey

      public boolean containsKey(Object pKey)
      Specified by:
      containsKey in interface Map
    • containsValue

      public boolean containsValue(Object pValue)
      Specified by:
      containsValue in interface Map
    • entrySet

      public Set entrySet()
      Specified by:
      entrySet in interface Map
    • get

      public Object get(Object pKey)
      Specified by:
      get in interface Map
    • isEmpty

      public boolean isEmpty()
      Specified by:
      isEmpty in interface Map
    • keySet

      public Set keySet()
      Specified by:
      keySet in interface Map
    • put

      public Object put(Object pKey, Object pValue)
      Specified by:
      put in interface Map
    • putAll

      public void putAll(Map pMap)
      Specified by:
      putAll in interface Map
    • remove

      public Object remove(Object pKey)
      Specified by:
      remove in interface Map
    • size

      public int size()
      Specified by:
      size in interface Map
    • values

      public Collection values()
      Specified by:
      values in interface Map
    • enumerateKeys

      public abstract Enumeration enumerateKeys()
      Returns an enumeration of the keys
    • isMutable

      public abstract boolean isMutable()
      Returns true if it is possible for this data source to change
    • getValue

      public abstract Object getValue(Object pKey)
      Returns the value associated with the given key, or null if not found.
    • getAsMap

      public Map getAsMap()
      Converts the MapSource to a Map. If the map is not mutable, this is cached
    • convertToMap

      Map convertToMap()
      Converts to a Map