org.geotools.validation.spatial
Class LineNoSelfIntersectValidation

java.lang.Object
  org.geotools.validation.DefaultFeatureValidation
      org.geotools.validation.spatial.LineNoSelfIntersectValidation

All Implemented Interfaces:

FeatureValidation, Validation

public class LineNoSelfIntersectValidation

extends DefaultFeatureValidation

LineNoSelfIntersectFeatureValidation purpose.

Tests to see if a geometry crosses itself. It does not detect if a segment of a LineString doubles back on itself for one segment, then terminates. A different validation is needed to test overlapping. Uses JTS' crosses routine.

Example Use:

 LineNoSelfIntersectFeatureValidation x = new LineNoSelfIntersectFeatureValidation("noSelfIntersectRoads", "Tests to see if a 
 geometry intersects itself", new String[] {"road"});
 

Version:

$Id: LineNoSelfIntersectValidation.java 17704 2006-01-23 00:26:16Z desruisseaux $ - bowens: changed intersects to crosses

Author:

bowens, Refractions Research, Inc., $Author: jive $ (last modification)

Field Summary

Fields inherited from interface org.geotools.validation.Validation

ALL, PRIORITY_COMPLEX, PRIORITY_INVOLVED, PRIORITY_SIMPLE, PRIORITY_TRIVIAL

Constructor Summary

LineNoSelfIntersectValidation()
LineNoSelfIntersectFeatureValidation constructor.

Method Summary

int	getPriority() Override getPriority.
boolean	validate(Feature feature, FeatureType type, ValidationResults results) Override validate.

Methods inherited from class org.geotools.validation.DefaultFeatureValidation

getDefaultLineString, getDescription, getName, getTypeRef, getTypeRefs, setDescription, setName, setTypeRef

Methods inherited from class java.lang.Object

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

Constructor Detail

LineNoSelfIntersectValidation

public LineNoSelfIntersectValidation()

LineNoSelfIntersectFeatureValidation constructor.

Description

Method Detail

getPriority

public int getPriority()

Override getPriority.

Sets the priority level of this validation. This is set by the programmer and is a measure of the expense of this plugin

Specified by:

getPriority in interface Validation

Overrides:

getPriority in class DefaultFeatureValidation

Returns:

A made up priority for this validation.

See Also:

Validation.getPriority()

validate

public boolean validate(Feature feature,
                        FeatureType type,
                        ValidationResults results)

Override validate.

Tests to see if a geometry intersects itself. It does not detect if a segment of a LineString doubles back on itself for one segment, then terminates. A different validation is needed to test overlapping. Uses JTS' intersect routine.

Specified by:

validate in interface FeatureValidation

Overrides:

validate in class DefaultFeatureValidation

Parameters:

feature - The Feature to be validated.

type - The FeatureTypeInfo of the feature.

results - The storage for error messages.

Returns:

True if the feature does not self intersect.

See Also:

org.geotools.validation.FeatureValidation#validate(org.geotools.feature.Feature, org.geotools.feature.FeatureTypeInfo, org.geotools.validation.ValidationResults)