org.mmbase.bridge.jsp.taglib.util
Class BasicBacking

java.lang.Object
  java.util.AbstractMap<String,Object>
      org.mmbase.bridge.jsp.taglib.util.BasicBacking

All Implemented Interfaces:

Map<String,Object>, Backing

Direct Known Subclasses:

CollectorBacking

public class BasicBacking
extends AbstractMap<String,Object>
implements Backing

A basic implementation for the backing of a ContextContainter. It uses a HashMap, but is also writes every entry to the temporary to the page-context, to make them available to JSP2's expression language, unless the 'ELIgnored' parameter of the MMBase taglib is true, or no pageContext is given in the constructor.

Since:

MMBase-1.8

Version:

$Id: BasicBacking.java 40228 2009-12-14 10:53:46Z michiel $

Author:

Michiel Meeuwissen

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>

Field Summary

protected boolean	isELIgnored
protected Set<String>	myPageContextKeys
protected Map<String,Object>	originalPageContextValues In this map we keep track of what should be in the page context when this backing is release()d.
protected PageContext	pageContext

Constructor Summary

BasicBacking(Map<String,Object> backing, boolean ignoreEL)

BasicBacking(PageContext pc, boolean ignoreEL)

Method Summary

void	clear()
boolean	containsKey(Object key)
boolean	containsOwnKey(String key) Whether this map contains the given key, but by its own, so not because of possible reflection of another structure (like the page context).
Set<Map.Entry<String,Object>>	entrySet()
Object	get(Object key)
Object	getOriginal(String key) Get the original value as stored in this Map, so without every wrapping which may have been done.
Map<String,Object>	getOriginalMap()
PageContext	getPageContext()
boolean	isELIgnored()
protected void	mirrorPut(String key, Object value)
protected void	mirrorPut(String key, Object value, boolean reset) Put the value also in the 'parent' of this backing.
void	pullPageContext(PageContext pc)
void	pushPageContext(PageContext pc) When the container gets used in a different page-context (e.g.
Object	put(String key, Object value)
Object	put(String key, Object value, boolean reset)
(package private) void	release()
Object	remove(Object key)
void	setJspVar(PageContext pc, String jspvar, int vartype, Object value)
String	toString()

Methods inherited from class java.util.AbstractMap

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

containsValue, equals, hashCode, isEmpty, keySet, putAll, size, values

Field Detail

originalPageContextValues

protected Map<String,Object> originalPageContextValues

In this map we keep track of what should be in the page context when this backing is release()d.

myPageContextKeys

protected Set<String> myPageContextKeys

isELIgnored

protected final boolean isELIgnored

pageContext

protected transient PageContext pageContext

Constructor Detail

BasicBacking

public BasicBacking(PageContext pc,
                    boolean ignoreEL)

Parameters:

pc - The page-context to which variables must be reflected or null if this must not happen.

BasicBacking

public BasicBacking(Map<String,Object> backing,
                    boolean ignoreEL)

Since:

MMBase-1.9

Method Detail

pushPageContext

public void pushPageContext(PageContext pc)

Description copied from interface: Backing

When the container gets used in a different page-context (e.g. because it was stored in the request or in the session), the new one must be pushed. And pulled again when ready.

Specified by:

pushPageContext in interface Backing

pullPageContext

public void pullPageContext(PageContext pc)

Specified by:

pullPageContext in interface Backing

See Also:

Backing.pushPageContext(PageContext)

getPageContext

public PageContext getPageContext()

Specified by:

getPageContext in interface Backing

setJspVar

public void setJspVar(PageContext pc,
                      String jspvar,
                      int vartype,
                      Object value)

Specified by:

setJspVar in interface Backing

entrySet

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

Specified by:

entrySet in interface Map<String,Object>

Specified by:

entrySet in class AbstractMap<String,Object>

mirrorPut

protected void mirrorPut(String key,
                         Object value,
                         boolean reset)

Put the value also in the 'parent' of this backing.

Parameters:

reset - If true (default it's false) allow the already existing value in the parent to be replaced.

Since:

MMBase-1.9.2

mirrorPut

protected void mirrorPut(String key,
                         Object value)

put

public Object put(String key,
                  Object value,
                  boolean reset)
           throws JspTagException

Throws:

JspTagException

put

public Object put(String key,
                  Object value)

Specified by:

put in interface Map<String,Object>

Overrides:

put in class AbstractMap<String,Object>

get

public Object get(Object key)

Specified by:

get in interface Map<String,Object>

Overrides:

get in class AbstractMap<String,Object>

remove

public Object remove(Object key)

Specified by:

remove in interface Map<String,Object>

Overrides:

remove in class AbstractMap<String,Object>

clear

public void clear()

Specified by:

clear in interface Map<String,Object>

Overrides:

clear in class AbstractMap<String,Object>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<String,Object>

Overrides:

containsKey in class AbstractMap<String,Object>

getOriginal

public Object getOriginal(String key)

Description copied from interface: Backing

Get the original value as stored in this Map, so without every wrapping which may have been done.

Specified by:

getOriginal in interface Backing

getOriginalMap

public Map<String,Object> getOriginalMap()

Specified by:

getOriginalMap in interface Backing

containsOwnKey

public boolean containsOwnKey(String key)

Description copied from interface: Backing

Whether this map contains the given key, but by its own, so not because of possible reflection of another structure (like the page context).

Specified by:

containsOwnKey in interface Backing

release

void release()

isELIgnored

public boolean isELIgnored()

Specified by:

isELIgnored in interface Backing

Since:

MMBase-1.9.1

toString

public String toString()

Overrides:

toString in class AbstractMap<String,Object>