Package org.openjump.sigle.utilities.geom

Class FeatureCollectionUtil

java.lang.Object

org.openjump.sigle.utilities.geom.FeatureCollectionUtil

public class FeatureCollectionUtil
extends Object

This class can check if a FeatureCollection has only one Geometry Type and in this case, return this Geometry Type.

Version:

2005-08-10

Author:

Erwan Bocher, Olivier Bedel, Giuseppe Aruta [2020-07-22] added two method to valid and to union by attribute a FeatureCollection

Constructor Summary

Constructors

Constructor	Description
FeatureCollectionUtil()

Method Summary

Modifier and Type	Method	Description
static ArrayList	getAttributesList(FeatureCollection fc)
static int	getFeatureCollectionDimension(FeatureCollection fc)
static void	unionByAttributeValue(FeatureCollection featureCollection, String attributeName)	Merge features and their geometries in the FeatureCollection given when the given attribute name contains identical values
static void	validFeatureCollection(FeatureCollection fc)	Method to make valid all the geometries of a FeatureCollection using the class MakeValidOp.

Methods inherited from class java.lang.Object

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

Constructor Detail

FeatureCollectionUtil

public FeatureCollectionUtil()

Method Detail

getFeatureCollectionDimension

public static int getFeatureCollectionDimension(FeatureCollection fc)

getAttributesList

public static ArrayList getAttributesList(FeatureCollection fc)

validFeatureCollection

public static void validFeatureCollection(FeatureCollection fc)

Method to make valid all the geometries of a FeatureCollection using the class MakeValidOp. A geometry is not valid if it is not simple: This condition occurs when any of the following conditions are true: Incorrect ring orientation (polygon), self-intersection rings (polygon) self-intersection path (polyline), unclosed ring (polygon) (see also https://desktop.arcgis.com/en/arcmap/latest/extensions/data-reviewer/finding-invalid-geometry.htm for the complete list). This method should be applied before merging features via because not simple geometries will be not processed

Parameters:

FeatureCollection - fc

unionByAttributeValue

public static void unionByAttributeValue(FeatureCollection featureCollection,
                                         String attributeName)
                                  throws Exception

Merge features and their geometries in the FeatureCollection given when the given attribute name contains identical values

Parameters:

featureCollection - feature collection

attributeName - attribute name

Throws:

Exception - if an Exception occurred