org.apache.struts2.dispatcher

Class RequestMap

java.lang.Object

java.util.AbstractMap<String,Object>

org.apache.struts2.dispatcher.RequestMap

All Implemented Interfaces:

Serializable, Map<String,Object>

public class RequestMap
extends AbstractMap<String,Object>
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

Modifier and Type	Method and Description
void	clear() Removes all attributes from the request as well as clears entries in this map.
Set<Map.Entry<String,Object>>	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(String 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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

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<String,Object>

Overrides:

clear in class AbstractMap<String,Object>

entrySet

public Set<Map.Entry<String,Object>> entrySet()

Returns a Set of attributes from the http request.

Specified by:

entrySet in interface Map<String,Object>

Specified by:

entrySet in class AbstractMap<String,Object>

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<String,Object>

Overrides:

get in class AbstractMap<String,Object>

Parameters:

key - the name of the request attribute.

Returns:

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

put

public Object put(String key,
                  Object value)

Saves an attribute in the request.

Specified by:

put in interface Map<String,Object>

Overrides:

put in class AbstractMap<String,Object>

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<String,Object>

Overrides:

remove in class AbstractMap<String,Object>

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).