Package org.geotools.data.complex.expression

Class FeaturePropertyAccessorFactory

Object

FeaturePropertyAccessorFactory

All Implemented Interfaces:

PropertyAccessorFactory

public class FeaturePropertyAccessorFactory
extends Object
implements PropertyAccessorFactory

Creates a namespace aware property accessor for ISO Features.

The created accessor handles a small subset of xpath expressions, a non-nested "name" which corresponds to a feature attribute, and "@id", corresponding to the feature id.

THe property accessor may be run against org.geotools.feature.Feature, or against org.geotools.feature.FeatureType. In the former case the feature property value is returned, in the latter a descriptor is returned (in case of "@" attributes, a Name is returned or null if the attribute doesn't exist - can be used to validate an x-path!) .

Author:

Justin Deoliveira (The Open Planning Project), Gabriel Roldan (Axios Engineering)

Field Summary

Fields inherited from interface PropertyAccessorFactory

DEFAULT_PRIORITY, HIGHEST_PRIORITY, LOWEST_PRIORITY, NAMESPACE_CONTEXT

Constructor Summary

Constructors

Constructor	Description
FeaturePropertyAccessorFactory()

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.
int	getPriority()	Return the priority associated with this property accessor.

Methods inherited from class Object

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

Constructor Details

FeaturePropertyAccessorFactory

public FeaturePropertyAccessorFactory()

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.

getPriority

public int getPriority()

Description copied from interface: PropertyAccessorFactory

Return the priority associated with this property accessor. By default, a priority value within the range of the lowest and highest priorities will be returned. The more generic a property accessor is, the lower its priority should be.

Specified by:

getPriority in interface PropertyAccessorFactory

Returns:

the priority of this property accessor