EnumeratedMap

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org.apache.commons.el
Class EnumeratedMap

java.lang.Object
  org.apache.commons.el.EnumeratedMap

All Implemented Interfaces:: java.util.Map

public abstract class EnumeratedMap
extends java.lang.Object
implements java.util.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 $

Nested Class Summary

Nested classes inherited from class java.util.Map

java.util.Map.Entry

Field Summary

(package private) java.util.Map mMap


Constructor Summary

EnumeratedMap()


Method Summary

void clear()
          Remove all entries from this Map (optional operation).

boolean containsKey(java.lang.Object pKey)
          Returns true if this contains a mapping for the given key.

boolean containsValue(java.lang.Object pValue)
          Returns true if this contains at least one mapping with the given value.

(package private) java.util.Map convertToMap()
          Converts to a Map

java.util.Set entrySet()
          Returns a set view of the mappings in this Map.

abstract java.util.Enumeration enumerateKeys()
          Returns an enumeration of the keys

java.lang.Object get(java.lang.Object pKey)
          Returns the value mapped by the given key.

java.util.Map getAsMap()
          Converts the MapSource to a Map.

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

boolean isEmpty()
          Returns true if the map contains no mappings.

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

java.util.Set keySet()
          Returns a set view of the keys in this Map.

java.lang.Object put(java.lang.Object pKey, java.lang.Object pValue)
          Associates the given key to the given value (optional operation).

void putAll(java.util.Map pMap)
          Copies all entries of the given map to this one (optional operation).

java.lang.Object remove(java.lang.Object pKey)
          Removes the mapping for this key if present (optional operation).

int size()
          Returns the number of key-value mappings in the map.

java.util.Collection values()
          Returns a collection (or bag) view of the values in this Map.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Map

equals, hashCode

Field Detail

mMap

java.util.Map mMap

Constructor Detail

EnumeratedMap

public EnumeratedMap()

Method Detail