Package org.geotools.filter.expression

Interface PropertyAccessorFactory

All Known Implementing Classes:

DirectPropertyAccessorFactory, FeaturePropertyAccessorFactory, JSONNodePropertyAccessorFactory, MapPropertyAccessorFactory, NullPropertyAccessorFactory, SimpleFeaturePropertyAccessorFactory, ThisPropertyAccessorFactory, XmlXPathPropertyAccessorFactory

public interface PropertyAccessorFactory

Factory used to create instances of PropertyAccessor

Author:

Justin Deoliveira, The Open Planning Project

Field Summary

Fields

Modifier and Type	Field	Description
static int	DEFAULT_PRIORITY	The numeric value for the default priority.
static int	HIGHEST_PRIORITY	The numeric value for highest priority.
static int	LOWEST_PRIORITY	The numeric value for lowest priority.
static Hints.Key	NAMESPACE_CONTEXT	Hints key used to pass namespace context to createPropertyAccessor(Class, String, Class, Hints) in the form of a NamespaceSupport instance with the prefix/namespaceURI mappings

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

Field Detail

HIGHEST_PRIORITY

static final int HIGHEST_PRIORITY

The numeric value for highest priority.

See Also:

Constant Field Values

LOWEST_PRIORITY

static final int LOWEST_PRIORITY

The numeric value for lowest priority.

See Also:

Constant Field Values

DEFAULT_PRIORITY

static final int DEFAULT_PRIORITY

The numeric value for the default priority.

See Also:

Constant Field Values

NAMESPACE_CONTEXT

static final Hints.Key NAMESPACE_CONTEXT

Hints key used to pass namespace context to createPropertyAccessor(Class, String, Class, Hints) in the form of a NamespaceSupport instance with the prefix/namespaceURI mappings

Method Detail

createPropertyAccessor

PropertyAccessor createPropertyAccessor(Class<?> type,
                                        String xpath,
                                        Class<?> target,
                                        Hints hints)

Creates a property accessor for a particular class.

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

default int getPriority()

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.

Returns:

the priority of this property accessor