| gvSIG desktop 1

/*

 * Created on 07-sep-2007

 *

 * gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

 *

 * $Id: 

 * $Log: 

 *

 */

package org.gvsig.topology.topologyrules;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import org.apache.log4j.Logger;

import org.gvsig.topology.AbstractTopologyRule;

import org.gvsig.topology.IRuleWithClusterTolerance;

import org.gvsig.topology.ITopologyErrorContainer;

import org.gvsig.topology.ITopologyRule;

import org.gvsig.topology.Messages;

import org.gvsig.topology.Topology;

import org.gvsig.topology.TopologyRuleFactory;

import org.gvsig.topology.topologyrules.jtsisvalidrules.GeometryMustHaveValidCoordinates;

import org.gvsig.topology.topologyrules.jtsisvalidrules.GeometryMustNotHaveFewPoints;

import org.gvsig.topology.topologyrules.jtsisvalidrules.IGeometryMustBeClosed;

import org.gvsig.topology.topologyrules.jtsisvalidrules.MultiPolygonMustNotHaveNestedShells;

import org.gvsig.topology.topologyrules.jtsisvalidrules.PolygonHolesMustBeInShell;

import org.gvsig.topology.topologyrules.jtsisvalidrules.PolygonHolesMustNotBeNested;

import org.gvsig.topology.topologyrules.jtsisvalidrules.PolygonMustHaveConnectedInterior;

import org.gvsig.topology.topologyrules.jtsisvalidrules.PolygonMustNotHaveDuplicatedRings;

import org.gvsig.topology.topologyrules.jtsisvalidrules.PolygonMustNotHaveSelfIntersectedRings;

import com.hardcode.gdbms.driver.exceptions.ReadDriverException;

import com.iver.cit.gvsig.fmap.core.FShape;

import com.iver.cit.gvsig.fmap.core.IFeature;

import com.iver.cit.gvsig.fmap.layers.FLyrVect;

import com.iver.utiles.XMLEntity;

/**

 * Any validated geometry must be a right JTS geometry.

 * 

 * A JTS geometry to be valid must check:

 * <ul>

 * <li>Must pass IsValidOp.</li>

 * <li>Polygon's shells must not selfintersect.</li>

 * <li>Polygon's holes must not selfintersect.</li>

 * <li>Polygon's rings must be closed.</li>

 * <li>Polygon's with only three collinear points are not allowed

 *  (this is a collapsed polygon to a line)</li>

 * <li>Polygon's shell must have coordinates in CCW</li>

 * <li>Polygon's holes must have coordinates in CCCW</li>

 * <li>Polygon's holes must not touch in more than one point</li>

 * <li>Polygon's holes could not be null</li>

 * <li>Polygon's holes must be contained by polygon shell</li>

 * <li>If a polygon has its exterior ring to null, but it has a hole, probably

   the order of the coordinates must be inverted.</li>

   <li>A polygon must not have repeated holes</li>

   <li>A polyline cant have two equals points.

   </ul>

 *

 */

public class JtsValidRule extends AbstractTopologyRule implements IRuleWithClusterTolerance {

        private static String ruleName = Messages.getText("must_be_jts_valid");

        private static Logger logger = Logger.getLogger(JtsValidRule.class.getName());

        List<ITopologyRule> jtsRules = new ArrayList<ITopologyRule>();

        private double snapTolerance;

        public JtsValidRule(FLyrVect originLyr, double snapTolerance){

                this(null, originLyr, snapTolerance);

        }

        public JtsValidRule(){}

        public JtsValidRule(Topology topology, FLyrVect originLyr, double snapTolerance){

                super(topology, originLyr);

                setClusterTolerance(snapTolerance);

        }

        public void setOriginLyr(FLyrVect originLyr){

                super.setOriginLyr(originLyr);

                initialize();

        }

        public void setTopologyErrorContainer(ITopologyErrorContainer errorContainer){

                super.setTopologyErrorContainer(errorContainer);

                Iterator<ITopologyRule> iterator = jtsRules.iterator();

                while(iterator.hasNext()){

                        ITopologyRule rule = iterator.next();

                        rule.setTopologyErrorContainer(this.errorContainer);

                }

        }

        private void initialize() {

                try {

                        int shapeType = this.getOriginLyr().getShapeType();

                        switch(shapeType){

                        case FShape.POINT:

                        case FShape.TEXT:

                        case FShape.MULTIPOINT:

                                jtsRules.add(getValidCoordsRule());

                                break;

                        case FShape.ARC:

                        case FShape.CIRCLE:

                        case FShape.ELLIPSE:

                        case FShape.LINE:

                                jtsRules.add(getValidCoordsRule());

                                jtsRules.add(getFewPointsRule());

                                break;

                        case FShape.MULTI://If type is multi, it will have all rules

                                jtsRules.add(getValidCoordsRule());

                                jtsRules.add(getFewPointsRule());

                                jtsRules.add(getClosedRingsRule());

                                jtsRules.add(getHolesInShellRule());

                                jtsRules.add(getHolesNotNestedRule());

                                jtsRules.add(getIntersectingRingsRule());

                                jtsRules.add(getNestedShellsRule());

                                jtsRules.add(getNotDuplicatedRingsRule());

                                jtsRules.add(getSelfIntersectingRingRule());

                        break;

                        case FShape.POLYGON://polygon geometries wont check for nested shells

                                jtsRules.add(getValidCoordsRule());

                                jtsRules.add(getFewPointsRule());

                                jtsRules.add(getClosedRingsRule());

                                jtsRules.add(getHolesInShellRule());

                                jtsRules.add(getHolesNotNestedRule());

                                jtsRules.add(getIntersectingRingsRule());

                                jtsRules.add(getNotDuplicatedRingsRule());

                                jtsRules.add(getSelfIntersectingRingRule());

                                break;

                        case FShape.NULL:

                                return;

                }

                } catch (ReadDriverException e) {

                        logger.error("Error initializing JTS valid rule. "+

                                        "Couldnt read shape type of layer", e);

                }

        }

        private GeometryMustHaveValidCoordinates getValidCoordsRule(){

                GeometryMustHaveValidCoordinates rule = new GeometryMustHaveValidCoordinates(topology, originLyr);

                rule.setTopologyErrorContainer(this.getTopologyErrorContainer());

                return rule;

        }

        private GeometryMustNotHaveFewPoints getFewPointsRule(){

                GeometryMustNotHaveFewPoints rule = new GeometryMustNotHaveFewPoints(topology, originLyr);

                rule.setTopologyErrorContainer(this.getTopologyErrorContainer());

                return rule;

        }

        private IGeometryMustBeClosed getClosedRingsRule(){

                IGeometryMustBeClosed rule = new IGeometryMustBeClosed(topology, originLyr, snapTolerance);

                rule.setTopologyErrorContainer(this.getTopologyErrorContainer());

                return rule;

        }

        private MultiPolygonMustNotHaveNestedShells getNestedShellsRule(){

                MultiPolygonMustNotHaveNestedShells rule = 

                        new MultiPolygonMustNotHaveNestedShells(topology, originLyr);

                rule.setTopologyErrorContainer(this.getTopologyErrorContainer());

                return rule;

        }

        private PolygonHolesMustBeInShell getHolesInShellRule(){

                PolygonHolesMustBeInShell rule = new PolygonHolesMustBeInShell(topology, originLyr, snapTolerance);

                rule.setTopologyErrorContainer(this.getTopologyErrorContainer());

                return rule;        

        }

        private PolygonHolesMustNotBeNested getHolesNotNestedRule(){

                PolygonHolesMustNotBeNested rule = new PolygonHolesMustNotBeNested(topology, originLyr);

                rule.setTopologyErrorContainer(this.getTopologyErrorContainer());

                return rule;

        }

        private PolygonMustNotHaveDuplicatedRings getNotDuplicatedRingsRule(){

                PolygonMustNotHaveDuplicatedRings rule = 

                        new PolygonMustNotHaveDuplicatedRings(topology, originLyr, snapTolerance);

                rule.setTopologyErrorContainer(this.getTopologyErrorContainer());

                return rule;

        }

        private PolygonMustHaveConnectedInterior getIntersectingRingsRule(){

                PolygonMustHaveConnectedInterior rule = new PolygonMustHaveConnectedInterior(topology, originLyr);

                rule.setTopologyErrorContainer(this.getTopologyErrorContainer());

                return rule;

        }

        private PolygonMustNotHaveSelfIntersectedRings getSelfIntersectingRingRule(){

                PolygonMustNotHaveSelfIntersectedRings rule = new PolygonMustNotHaveSelfIntersectedRings(topology, originLyr, snapTolerance);

                rule.setTopologyErrorContainer(this.getTopologyErrorContainer());

                return rule;

        }

        public void validateFeature(IFeature feature) {

                 Iterator<ITopologyRule> it = this.jtsRules.iterator();

                 while(it.hasNext()){

                         ITopologyRule rule = it.next();

                         rule.validateFeature(feature);

                 }

        }

        public String getName() {

                return ruleName;

        }

        /*

         * This rule accepts point, line and polygon layers.

         *  TODO Maybe must we check for getNumGeometries() > 0

         * for layer??

         * 

         * */

        public void checkPreconditions() {

        }

        public XMLEntity getXMLEntity(){

                XMLEntity xml = super.getXMLEntity();

                xml.putProperty("numberOfRules", jtsRules.size());

                Iterator<ITopologyRule> rulesIt = jtsRules.iterator();

                while(rulesIt.hasNext()){

                        ITopologyRule rule = rulesIt.next();

                        xml.addChild(rule.getXMLEntity());

                }

                return xml;

        }

        public void setXMLEntity(XMLEntity xml){

                super.setXMLEntity(xml);

                if(xml.contains("numberOfRules")){

                        int numberOfRules = xml.getIntProperty("numberOfRules");

                        for(int i = 0; i < numberOfRules; i++){

                                XMLEntity subRuleXML = xml.getChild(i);

                                //TODO Incluir llamada a RuleFactory y add(rule)

                                ITopologyRule rule = TopologyRuleFactory.createFromXML(topology, subRuleXML);

                                jtsRules.add(rule);

                        }//for

                }//if

        }

        public double getClusterTolerance() {

                return this.snapTolerance;

        }

        public void setClusterTolerance(double clusterTolerance) {

                this.snapTolerance = clusterTolerance;

                initialize();

        }

}