Interface DynamicPropertyHandler

All Known Implementing Classes:

HttpSessionHandler, MapDynamicPropertyHandler, PageContextHandler, PageScopeContextHandler, ServletContextHandler, ServletRequestHandler

public interface DynamicPropertyHandler

A generic mechanism for accessing collections of name/value pairs. Examples of such collections are HashMap, Properties, ServletContext. In order to add support for a new such collection type to JXPath, perform the following two steps:

1. Build an implementation of the DynamicPropertyHandler interface for the desired collection type.
2. Invoke the static method JXPathIntrospector.registerDynamicClass(class, handlerClass)

JXPath allows access to dynamic properties using these three formats:

• "myMap/myKey"
• "myMap[@name = 'myKey']"
• "myMap[name(.) = 'myKey']"

Version:

$Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $

Author:

Dmitri Plotnikov

Method Summary

Modifier and Type	Method	Description
Object	getProperty(Object object, String propertyName)	Returns the value of the specified dynamic property.
String[]	getPropertyNames(Object object)	Returns a list of dynamic property names for the supplied object.
void	setProperty(Object object, String propertyName, Object value)	Modifies the value of the specified dynamic property.

Method Details

getPropertyNames

String[] getPropertyNames(Object object)

Returns a list of dynamic property names for the supplied object.

Parameters:

object - to inspect

Returns:

String[]

getProperty

Object getProperty(Object object,
 String propertyName)

Returns the value of the specified dynamic property.

Parameters:

object - to search

propertyName - to retrieve

Returns:

Object

setProperty

void setProperty(Object object,
 String propertyName,
 Object value)

Modifies the value of the specified dynamic property.

Parameters:

object - to modify

propertyName - to modify

value - to set