org.apache.struts2.dispatcher

Class ApplicationMap

java.lang.Object

java.util.AbstractMap<String,Object>

org.apache.struts2.dispatcher.ApplicationMap

All Implemented Interfaces:

Serializable, Map<String,Object>

public class ApplicationMap
extends AbstractMap<String,Object>
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 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
ApplicationMap(javax.servlet.ServletContext ctx) Creates a new map object given the servlet context.

Method Summary

Modifier and Type	Method and Description
void	clear() Removes all entries from the Map and removes all attributes from the servlet context.
Set<Map.Entry<String,Object>>	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(String 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

Methods inherited from interface java.util.Map

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

Constructor Detail

ApplicationMap

public ApplicationMap(javax.servlet.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<String,Object>

Overrides:

clear in class AbstractMap<String,Object>

entrySet

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

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

Specified by:

entrySet in interface Map<String,Object>

Specified by:

entrySet in class AbstractMap<String,Object>

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<String,Object>

Overrides:

get in class AbstractMap<String,Object>

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(String key,
                  Object value)

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

Specified by:

put in interface Map<String,Object>

Overrides:

put in class AbstractMap<String,Object>

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<String,Object>

Overrides:

remove in class AbstractMap<String,Object>

Parameters:

key - the attribute to remove.

Returns:

the entry that was just removed.