| gvSIG desktop 1

/*

 * Created on 12-may-2006

 *

 * 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: IDissolveCriteria.java 5412 2006-05-24 21:15:07Z azabala $

* $Log$

* Revision 1.1  2006-05-24 21:11:14  azabala

* primera version en cvs despues de refactoring orientado a crear un framework extensible de geoprocessing

*

*

*/

package com.iver.cit.gvsig.geoprocess.dissolve.fmap;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import java.util.Map;

import com.iver.cit.gvsig.fmap.DriverException;

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

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

import com.iver.cit.gvsig.fmap.drivers.FieldDescription;

import com.iver.cit.gvsig.fmap.drivers.ILayerDefinition;

import com.iver.cit.gvsig.fmap.drivers.SHPLayerDefinition;

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

import com.iver.cit.gvsig.geoprocess.core.fmap.DefinitionUtils;

import com.iver.cit.gvsig.geoprocess.core.fmap.SummarizationFunction;

import com.iver.cit.gvsig.geoprocess.core.fmap.XTypes;

/**

 * Implementations has the responsability of decide if Dissolver must

 * dissolve two features.

 * <br>

 * Because this decision could depend of one (or many) attribute values

 * of compared features, and resulting features of dissolve must have

 * all dissolving fields, implementations of this interface must have

 * the responsability of creating new resulting features of a dissolve.

 * @author azabala

 * 

 */

public interface IDissolveCriteria {

        /**

         * Returns if we must dissolve feature of index "featureindex1" with

         * feature of index "featureindex2"

         * @param featureIndex1

         * @param featureIndex2

         * @return

         */

        public boolean verifyIfDissolve(int featureIndex1, int featureIndex2);

        /**

         * Builds features from a dissolve operation.

         * @author azabala

         *

         */

        public interface IDissolvedFeatureBuilder {

                /**

                 * Create a new feature from geometry g, and the index of

                 * the 'seed' (first feature of the dissolve group) feature

                 * (useful for fetching dissolve fields value, etc.)

                 * @param g

                 * @param index

                 * @param fid

                 * @return

                 */

                public IFeature createFeature(IGeometry g, int index, int fid);

                /**

                 * 

                 * @param newGeometry

                 * @param sumarizedValues

                 * @param newFid

                 * @param index

                 * @return

                 */

                public IFeature createFeature(IGeometry newGeometry, 

                                List sumarizedValues, int newFid, int index);

        }

        public IDissolvedFeatureBuilder getFeatureBuilder();

        /**

         * Clear all state information about dissolving

         * (usually a criteria could cache dissolve information to 

         * avoid reading dissolve fields value always)

         *

         */

        public void clear();

        /**

         * Returns a LayerDefinition for the result layer of those

         * dissolve geoprocesses where this criteria applies.

         * 

         * @return

         */

        public ILayerDefinition createLayerDefinition(Map numFields_SumFunc);

}