org.apache.struts2.dispatcher
Class ApplicationMap

java.lang.Object
  java.util.AbstractMap
      org.apache.struts2.dispatcher.ApplicationMap

All Implemented Interfaces:

Serializable, Map

public class ApplicationMap
extends AbstractMap
implements Serializable

A simple implementation of the Map interface to handle a collection of attributes and init parameters in a ServletContext object. The entrySet() method enumerates over all servlet context attributes and init parameters and returns a collection of both. Note, this will occur lazily - only when the entry set is asked for.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Field Summary

private ServletContext	context
private Set<Object>	entries
private static long	serialVersionUID

Constructor Summary

ApplicationMap(ServletContext ctx)
Creates a new map object given the servlet context.

Method Summary

void	clear() Removes all entries from the Map and removes all attributes from the servlet context.
Set	entrySet() Creates a Set of all servlet context attributes as well as context init parameters.
Object	get(Object key) Returns the servlet context attribute or init parameter based on the given key.
Object	put(Object key, Object value) Sets a servlet context attribute given a attribute name and value.
Object	remove(Object key) Removes the specified servlet context attribute.

Methods inherited from class java.util.AbstractMap

clone, containsKey, containsValue, equals, hashCode, isEmpty, keySet, putAll, size, toString, values

Methods inherited from class java.lang.Object

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

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

context

private ServletContext context

entries

private Set<Object> entries

Constructor Detail

ApplicationMap

public ApplicationMap(ServletContext ctx)

Creates a new map object given the servlet context.

Parameters:

ctx - the servlet context

Method Detail

clear

public void clear()

Removes all entries from the Map and removes all attributes from the servlet context.

Specified by:

clear in interface Map

Overrides:

clear in class AbstractMap

entrySet

public Set entrySet()

Creates a Set of all servlet context attributes as well as context init parameters.

Specified by:

entrySet in interface Map

Specified by:

entrySet in class AbstractMap

Returns:

a Set of all servlet context attributes as well as context init parameters.

get

public Object get(Object key)

Returns the servlet context attribute or init parameter based on the given key. If the entry is not found, null is returned.

Specified by:

get in interface Map

Overrides:

get in class AbstractMap

Parameters:

key - the entry key.

Returns:

the servlet context attribute or init parameter or null if the entry is not found.

put

public Object put(Object key,
                  Object value)

Sets a servlet context attribute given a attribute name and value.

Specified by:

put in interface Map

Overrides:

put in class AbstractMap

Parameters:

key - the name of the attribute.

value - the value to set.

Returns:

the attribute that was just set.

remove

public Object remove(Object key)

Removes the specified servlet context attribute.

Specified by:

remove in interface Map

Overrides:

remove in class AbstractMap

Parameters:

key - the attribute to remove.

Returns:

the entry that was just removed.