com.vividsolutions.jump.feature

Class FeatureUtil

java.lang.Object

com.vividsolutions.jump.feature.FeatureUtil

public class FeatureUtil
extends java.lang.Object

Useful utility functions for working with Features.

See Also:

Feature

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	FeatureUtil.IDComparator Compares two Features for order based on their feature ID.

Constructor Summary

Constructors

Constructor and Description
FeatureUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	areAllNonSpatialAttributesNull(Feature feature) Returns whether all attributes are null (other than the Geometry attribute, which is not checked)
static void	copyAttributes(Feature a, Feature b) Although Feature implements Cloneable, this method is useful when the two Features are implemented with different classes.
static int	nextID() Increments and returns the feature-ID counter
static Feature	toFeature(com.vividsolutions.jts.geom.Geometry g, FeatureSchema schema) Creates a new Feature from the given Geometry, with nominal values for the attributes.
static java.util.List	toGeometries(java.util.Collection features) Returns the n Geometries extracted from the given n Features

Methods inherited from class java.lang.Object

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

Constructor Detail

FeatureUtil

public FeatureUtil()

Method Detail

toFeature

public static Feature toFeature(com.vividsolutions.jts.geom.Geometry g,
                FeatureSchema schema)

Creates a new Feature from the given Geometry, with nominal values for the attributes.

The schema must have a attribute of type AttributeType.GEOMETRY.

Parameters:

g - the Geometry to convert

schema - metadata for the Feature to create

Returns:

a new Feature containing the Geometry and default values for the attributes

toGeometries

public static java.util.List toGeometries(java.util.Collection features)

Returns the n Geometries extracted from the given n Features

nextID

public static int nextID()

Increments and returns the feature-ID counter

See Also:

Feature.getID()

copyAttributes

public static void copyAttributes(Feature a,
                  Feature b)

Although Feature implements Cloneable, this method is useful when the two Features are implemented with different classes.

areAllNonSpatialAttributesNull

public static boolean areAllNonSpatialAttributesNull(Feature feature)

Returns whether all attributes are null (other than the Geometry attribute, which is not checked)