gausssoft.collections
Class FilterMap

java.lang.Object
  |
  +--gausssoft.collections.FilterMap

All Implemented Interfaces:

Map, Serializable

public class FilterMap

extends Object

implements Map, Serializable

The FilterMap class contains another Map, which it uses as it's basic source of data, possibly transforming the data along the way or providing additional functionality.

Each method in this implementation calls the method with the same signature in the backing map.

This class can only be serialized if the backing sorted map is serializable.

Author:

Allan Crooks

See Also:

Map, Serialized Form

Inner classes inherited from class java.util.Map

Map.Entry

Field Summary

protected Map

root The backing set.

Constructor Summary

FilterMap(Map root)
Creates a new FilterMap.

Method Summary

void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set	entrySet()
boolean	equals(Object o)
Object	get(Object key)
int	hashCode()
boolean	isEmpty()
Set	keySet()
Object	put(Object key, Object value)
void	putAll(Map t)
Object	remove(Object key)
int	size()
String	toString()
Collection	values()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

root

protected Map root

The backing set.

Constructor Detail

FilterMap

public FilterMap(Map root)

Creates a new FilterMap.

Parameters:

map - The set to wrap this FilterSet around.

Throws:

NullPointerException - root is null.

Method Detail

size

public int size()

Specified by:

size in interface Map

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map

get

public Object get(Object key)

Specified by:

get in interface Map

put

public Object put(Object key,
                  Object value)

Specified by:

put in interface Map

remove

public Object remove(Object key)

Specified by:

remove in interface Map

putAll

public void putAll(Map t)

Specified by:

putAll in interface Map

clear

public void clear()

Specified by:

clear in interface Map

keySet

public Set keySet()

Specified by:

keySet in interface Map

values

public Collection values()

Specified by:

values in interface Map

entrySet

public Set entrySet()

Specified by:

entrySet in interface Map

equals

public boolean equals(Object o)

Specified by:

equals in interface Map

Overrides:

equals in class Object

hashCode

public int hashCode()

Specified by:

hashCode in interface Map

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object