org.apache.struts2.dispatcher

Class RequestMap

java.lang.Object

java.util.AbstractMap

org.apache.struts2.dispatcher.RequestMap

All Implemented Interfaces:

Serializable, Map

public class RequestMap
extends AbstractMap
implements Serializable

A simple implementation of the Map interface to handle a collection of request attributes.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

AbstractMap.SimpleEntry<K,V>, AbstractMap.SimpleImmutableEntry<K,V>

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

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
RequestMap(javax.servlet.http.HttpServletRequest request) Saves the request to use as the backing for getting and setting values

Method Summary

Methods

Modifier and Type	Method and Description
void	clear() Removes all attributes from the request as well as clears entries in this map.
Set	entrySet() Returns a Set of attributes from the http request.
Object	get(Object key) Returns the request attribute associated with the given key or null if it doesn't exist.
Object	put(Object key, Object value) Saves an attribute in the request.
Object	remove(Object key) Removes the specified request 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

Constructor Detail

RequestMap

public RequestMap(javax.servlet.http.HttpServletRequest request)

Saves the request to use as the backing for getting and setting values

Parameters:

request - the http servlet request.

Method Detail

clear

public void clear()

Removes all attributes from the request as well as clears entries in this map.

Specified by:

clear in interface Map

Overrides:

clear in class AbstractMap

entrySet

public Set entrySet()

Returns a Set of attributes from the http request.

Specified by:

entrySet in interface Map

Specified by:

entrySet in class AbstractMap

Returns:

a Set of attributes from the http request.

get

public Object get(Object key)

Returns the request attribute associated with the given key or null if it doesn't exist.

Specified by:

get in interface Map

Overrides:

get in class AbstractMap

Parameters:

key - the name of the request attribute.

Returns:

the request attribute or null if it doesn't exist.

put

public Object put(Object key,
         Object value)

Saves an attribute in the request.

Specified by:

put in interface Map

Overrides:

put in class AbstractMap

Parameters:

key - the name of the request attribute.

value - the value to set.

Returns:

the object that was just set.

remove

public Object remove(Object key)

Removes the specified request attribute.

Specified by:

remove in interface Map

Overrides:

remove in class AbstractMap

Parameters:

key - the name of the attribute to remove.

Returns:

the value that was removed or null if the value was not found (and hence, not removed).