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Java Source Code / Java Documentation » Ajax » Laszlo 4.0.10 » org.openlaszlo.iv.flash.context 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.openlaszlo.iv.flash.context.Context
      org.openlaszlo.iv.flash.context.GraphContext
         org.openlaszlo.iv.flash.context.BeanContext

BeanContext
public class BeanContext extends GraphContext implements Map(Code)
A Context that provides access to a graph of objects (beans and collections) using Jexl (JSTL expression language + extenstions) syntax. Unlike the other contexts in JGen, this is not easily creatable from a datasource, and is intended to be used where JGen is embedded in another framework.
author:
   James Taylor


Field Summary
final public static  StringROOT_ITEM_KEY
    

Constructor Summary
public  BeanContext()
     Creates empty context.
public  BeanContext(Context context, Map values)
     Creates context from specified hashtable.

Method Summary
public  voidclear()
    
public  booleancontainsKey(Object key)
    
public  booleancontainsValue(Object value)
    
public  SetentrySet()
    
public  booleanequals(Object o)
    
public  Objectget(Object key)
    
public  StringgetValue(String path)
     Tries to resolve given string in this context as XPath expression, using JPath.
public  ListgetValueList(String path)
     Tries to resolve given string in this context as Jexl expression. If the path expression evaluates to a non-empty list, a list of contexts corresponding to each value in that list will be returned.
public  inthashCode()
    
public  booleanisEmpty()
    
public  SetkeySet()
    
public  Objectput(Object key, Object value)
    
public  voidputAll(Map t)
    
public  Objectremove(Object key)
    
public  intsize()
    
public  Collectionvalues()
    

Field Detail
ROOT_ITEM_KEY
final public static String ROOT_ITEM_KEY(Code)
Key used to store root object when building a context for a list item




Constructor Detail
BeanContext
public BeanContext()(Code)
Creates empty context.



BeanContext
public BeanContext(Context context, Map values)(Code)
Creates context from specified hashtable.
Parameters:
  context - parent context
Parameters:
  values - Map of initial values to populate context with




Method Detail
clear
public void clear()(Code)



containsKey
public boolean containsKey(Object key)(Code)



containsValue
public boolean containsValue(Object value)(Code)



entrySet
public Set entrySet()(Code)



equals
public boolean equals(Object o)(Code)



get
public Object get(Object key)(Code)



getValue
public String getValue(String path)(Code)
Tries to resolve given string in this context as XPath expression, using JPath. If the XPath expression selects an object, the result of evaluating its 'toString' method is returned, otherwise the path is passed along to the parent context (if defined).
Parameters:
  path - XPath/JPath expression String representation of result of xpath execution or resultfrom the parent or null



getValueList
public List getValueList(String path)(Code)
Tries to resolve given string in this context as Jexl expression. If the path expression evaluates to a non-empty list, a list of contexts corresponding to each value in that list will be returned. Otherwise the path is passed to the parent context. If there is no parent context, null is returned. The wrapping contexts will have the single element 'root' which is the object selected as a list item.
Parameters:
  path - Jexl expression List of objects (wrapped in BeanContext) selected by path orresult from the parent or null



hashCode
public int hashCode()(Code)



isEmpty
public boolean isEmpty()(Code)



keySet
public Set keySet()(Code)



put
public Object put(Object key, Object value)(Code)



putAll
public void putAll(Map t)(Code)



remove
public Object remove(Object key)(Code)



size
public int size()(Code)



values
public Collection values()(Code)



Methods inherited from org.openlaszlo.iv.flash.context.GraphContext
abstract public String getValue(String path)(Code)(Java Doc)
abstract public List getValueList(String path)(Code)(Java Doc)
protected List getValueListFromParent(String path)(Code)(Java Doc)
public static List sortValueList(List list, String sortby, boolean ascending)(Code)(Java Doc)

Methods inherited from org.openlaszlo.iv.flash.context.Context
public String apply(String s)(Code)(Java Doc)
public CommandContext getCommandContext()(Code)(Java Doc)
public Context getParent()(Code)(Java Doc)
abstract public String getValue(String name)(Code)(Java Doc)
protected String getValueFromParent(String expr)(Code)(Java Doc)
public void setParent(Context parent)(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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