Package org.apache.commons.jxpath

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']"

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

getProperty

Object getProperty(Object object,
 String propertyName)

Returns the value of the specified dynamic property.

Parameters:

object - to search

propertyName - to retrieve

Returns:

Object

getPropertyNames

String[] getPropertyNames(Object object)

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

Parameters:

object - to inspect

Returns:

String[]

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