Package org.geotools.filter.expression

Class NullPropertyAccessorFactory

Object

NullPropertyAccessorFactory

All Implemented Interfaces:

PropertyAccessorFactory

public class NullPropertyAccessorFactory
extends Object
implements PropertyAccessorFactory

This class supports the use of Expression/NIL for referring to a 'null' value.

Author:

Niels Charlier, Curtin University Of Technology

Field Summary

Fields inherited from interface PropertyAccessorFactory

DEFAULT_PRIORITY, HIGHEST_PRIORITY, LOWEST_PRIORITY, NAMESPACE_CONTEXT

Constructor Summary

Constructors

Constructor	Description
NullPropertyAccessorFactory()

Method Summary

Modifier and Type	Method	Description
PropertyAccessor	createPropertyAccessor(Class type, String xpath, Class target, Hints hints)	Creates a property accessor for a particular class.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface PropertyAccessorFactory

getPriority

Constructor Details

NullPropertyAccessorFactory

public NullPropertyAccessorFactory()

Method Details

createPropertyAccessor

public PropertyAccessor createPropertyAccessor(Class type,
 String xpath,
 Class target,
 Hints hints)

Description copied from interface: PropertyAccessorFactory

Creates a property accessor for a particular class.

Specified by:

createPropertyAccessor in interface PropertyAccessorFactory

Parameters:

type - The type of object to be accessed.

xpath - The xpath expression to evaluate.

target - The kind of result we are expecting (ie Geometry)

hints - Hints to be used when creatign the accessor.

Returns:

The property accessor, or null if this factory cannot create an accessor for the specified type.