root / trunk / extensions / extGeoProcessing / src / com / iver / gvsig / geoprocessing / impl / difference / DifferenceGeoprocess.java @ 4447
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/*
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* Created on 22-feb-2006
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*
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* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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/* CVS MESSAGES:
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*
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* $Id: DifferenceGeoprocess.java 4447 2006-03-15 18:35:56Z azabala $
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* $Log$
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* Revision 1.6 2006-03-15 18:31:50 azabala
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* *** empty log message ***
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*
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* Revision 1.5 2006/03/14 18:32:46 fjp
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* Cambio con LayerDefinition para que sea compatible con la definici?n de tablas tambi?n.
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*
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* Revision 1.4 2006/03/07 21:01:33 azabala
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* *** empty log message ***
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*
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* Revision 1.3 2006/03/06 19:48:39 azabala
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* *** empty log message ***
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*
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* Revision 1.2 2006/03/05 19:57:58 azabala
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* *** empty log message ***
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*
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* Revision 1.1 2006/02/26 20:53:13 azabala
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* *** empty log message ***
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*
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*
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*/
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package com.iver.gvsig.geoprocessing.impl.difference; |
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import java.util.Map; |
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import com.hardcode.gdbms.engine.data.driver.DriverException; |
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import com.iver.cit.gvsig.fmap.core.IFeature; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.drivers.DriverIOException; |
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import com.iver.cit.gvsig.fmap.drivers.ILayerDefinition; |
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import com.iver.cit.gvsig.fmap.edition.EditionException; |
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import com.iver.cit.gvsig.fmap.layers.FBitSet; |
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import com.iver.cit.gvsig.fmap.layers.FLyrVect; |
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import com.iver.cit.gvsig.fmap.operations.CancellableMonitorable; |
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import com.iver.cit.gvsig.fmap.operations.DefaultCancellableMonitorable; |
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import com.iver.cit.gvsig.fmap.operations.strategies.Strategy; |
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import com.iver.cit.gvsig.fmap.operations.strategies.StrategyManager; |
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import com.iver.cit.gvsig.fmap.operations.strategies.VisitException; |
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import com.iver.gvsig.geoprocessing.impl.AbstractGeoprocess; |
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import com.iver.gvsig.geoprocessing.impl.jtsprocessors.FeaturePersisterProcessor2; |
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import com.iver.gvsig.geoprocessing.model.GeoprocessException; |
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import com.iver.gvsig.geoprocessing.model.IOverlayGeoprocess; |
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import com.iver.gvsig.geoprocessing.schemabuilder.DefinitionUtils; |
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import com.iver.gvsig.geoprocessing.schemabuilder.XTypes; |
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import com.iver.utiles.swing.threads.IMonitorableTask; |
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/**
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* This geoprocess computes diference geometries of two overlay polygon layers.
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* Difference of two geometries is the set of point of one geometry that the
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* other geometry doesnt have.
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* By analogy, this geoprocess computes difference geometries between vectorial
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* layers.
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*
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* @author azabala
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*
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*/
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public class DifferenceGeoprocess extends AbstractGeoprocess |
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implements IOverlayGeoprocess {
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/**
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* overlay layer
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*/
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private FLyrVect overlayLayer;
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/**
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* Schema of the result layer
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*/
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private ILayerDefinition resultLayerDefinition;
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/**
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* flag to only clip selection of input layer
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*/
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private boolean onlyFirstLayerSelection = false; |
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/**
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* flag to only clip with selection of clipping layer
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*/
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private boolean onlyClipLayerSelection = false; |
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public DifferenceGeoprocess(FLyrVect inputLayer) {
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setFirstOperand(inputLayer); |
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} |
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public void setSecondOperand(FLyrVect overlayLayer) { |
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this.overlayLayer = overlayLayer;
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} |
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public void setFirstOperand(FLyrVect firstLayer) { |
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this.firstLayer = firstLayer;
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} |
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public void setParameters(Map params) throws GeoprocessException { |
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Boolean firstLayerSelection = (Boolean) params |
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.get("firstlayerselection");
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if (firstLayerSelection != null) |
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this.onlyFirstLayerSelection = firstLayerSelection.booleanValue();
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Boolean secondLayerSelection = (Boolean) params |
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.get("secondlayerselection");
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if (secondLayerSelection != null) |
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this.onlyClipLayerSelection = secondLayerSelection.booleanValue();
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} |
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public void checkPreconditions() throws GeoprocessException { |
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if (firstLayer == null) |
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throw new GeoprocessException( |
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"Interseccion: capa de entrada a null");
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if (overlayLayer == null) |
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throw new GeoprocessException("Interseccion: capa de union a null"); |
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if (this.writer == null || this.schemaManager == null) { |
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throw new GeoprocessException( |
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"Operacion de interseccion sin especificar capa de resultados");
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} |
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try {
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if (firstLayer.getShapeType() != XTypes.POLYGON) {
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throw new GeoprocessException( |
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"Primera capa de interseccion no es de pol?gonos");
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} |
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if (overlayLayer.getShapeType() != XTypes.POLYGON) {
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throw new GeoprocessException( |
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"Segunda capa de interseccion no es de pol?gonos");
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} |
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} catch (com.iver.cit.gvsig.fmap.DriverException e) {
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throw new GeoprocessException( |
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"Error al tratar de chequear si las capas a intersectar son de pol?gonos");
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} |
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} |
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//FIXME La unica diferencia entre este geoproceso y el intersection
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//es que usa visitors distintos
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//REDISE?AR TODOS LOS OVERLAYGEOPROCESS
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public void process() throws GeoprocessException { |
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try {
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//FIXME Sacar esto de aqu? y ponerlo fuera. Marcaremos como precondicion
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//que el esquema del geoproceso haya sido creado
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// Prepare the result
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this.schemaManager.createOrAlterSchema(createLayerDefinition());
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writer.preProcess(); |
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Strategy strategy = |
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StrategyManager.getStrategy(firstLayer); |
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FeaturePersisterProcessor2 featureProcessor = new FeaturePersisterProcessor2(
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writer); |
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Strategy overlayStrategy = |
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StrategyManager.getStrategy(overlayLayer); |
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DifferenceVisitor visitor = new DifferenceVisitor(overlayLayer,
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featureProcessor, overlayStrategy, onlyClipLayerSelection); |
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if (this.onlyFirstLayerSelection) { |
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strategy.process(visitor, this.firstLayer.getRecordset()
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.getSelection()); |
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} else {
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strategy.process(visitor); |
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} |
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} catch (EditionException e) {
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throw new GeoprocessException( |
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"Error al crear el esquema/fichero de la nueva capa");
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} catch (DriverException e) {
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throw new GeoprocessException( |
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"Error de driver al calcular el geoproceso interseccion");
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} catch (com.iver.cit.gvsig.fmap.DriverException e) {
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throw new GeoprocessException( |
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"Error de driver al calcular el geoproceso interseccion");
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} catch (VisitException e) {
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throw new GeoprocessException( |
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"Error al procesar el feature de una capa durante el geoproceso interseccion");
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} |
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} |
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public void cancel() { |
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try {
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schemaManager.drop(); |
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} catch (EditionException e) {
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// FIXME (debe lanzar una excepcion cancel)
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e.printStackTrace(); |
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} |
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} |
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public ILayerDefinition createLayerDefinition() {
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if (resultLayerDefinition == null) { |
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try {
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resultLayerDefinition = DefinitionUtils.mergeLayerDefinitions( |
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firstLayer, overlayLayer); |
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} catch (Exception e) { |
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// TODO Quizas createLayerDefinition deberia lanzar
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// una excepcion
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e.printStackTrace(); |
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} |
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} |
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return resultLayerDefinition;
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} |
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public FBitSet getOverlays(IGeometry firstLayerGeometry, int index) { |
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// TODO Auto-generated method stub
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return null; |
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} |
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public IFeature[] computeIntersection(IGeometry firsLayerGeometry, |
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int firstLayerFeatureIndex, IGeometry secondLayerGeometry,
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int secondLayerFeatureIndex) {
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// TODO Auto-generated method stub
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return null; |
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} |
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public IMonitorableTask createTask() {
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try {
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return new DifferenceMonitorableTask(); |
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} catch (DriverIOException e) {
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//FIXME Debe lanzar excepcion createTask ?
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return null; |
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} |
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} |
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/**
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* IMonitorableTask that allows to run diff geoprocess in background,
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* with cancelation requests.
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*
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* @author azabala
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*
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*/
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class DifferenceMonitorableTask implements IMonitorableTask { |
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private CancellableMonitorable cancelMonitor = null; |
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// FIXME INTERNACIONALIZAR ESTO
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String DIFFERENCE_MESSAGE = "Computing differences: "; |
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private boolean finished = false; |
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DifferenceMonitorableTask() throws DriverIOException {
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initialize(); |
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} |
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void initialize() throws DriverIOException { |
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cancelMonitor = createCancelMonitor(); |
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} |
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private CancellableMonitorable createCancelMonitor()
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throws DriverIOException {
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DefaultCancellableMonitorable monitor = new
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DefaultCancellableMonitorable(); |
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monitor.setInitialStep(0);
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//Really its undeterminated, but so we must to process all
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//elements of first layer (or selection) we are going to
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//consideer determinated
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monitor.setDeterminatedProcess(true);
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int numSteps = 0; |
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if (onlyFirstLayerSelection) {
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FBitSet selection = firstLayer.getRecordset().getSelection(); |
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numSteps = selection.cardinality(); |
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} else {
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numSteps = firstLayer.getSource().getShapeCount(); |
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} |
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monitor.setFinalStep(numSteps); |
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return monitor;
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} |
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public int getInitialStep() { |
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return cancelMonitor.getInitialStep();
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} |
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public int getFinishStep() { |
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return cancelMonitor.getFinalStep();
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} |
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public int getCurrentStep() { |
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return cancelMonitor.getCurrentStep();
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} |
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public String getStatusMessage() { |
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// FIXME Cambiar esto por un mecanismo de eventos,
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// de forma que la tarea lo que tenga sea un escuchador
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// que cambie el mensaje de estado segun los eventos
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// de tareas que se est?n realizando
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return "Difference Geoprocess..."; |
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} |
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public String getNote() { |
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// FIXME Cambiar esto por un mecanismo de eventos,
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// de forma que la tarea lo que tenga sea un escuchador
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// que cambie el mensaje de estado segun los eventos
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// de tareas que se est?n realizando
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return DIFFERENCE_MESSAGE + getCurrentStep() + "of " + getFinishStep(); |
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} |
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public void cancel() { |
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((DefaultCancellableMonitorable) cancelMonitor).setCanceled(true);
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} |
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public void run() throws GeoprocessException { |
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try {
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//FIXME Sacar esto de aqu? y ponerlo fuera. Marcaremos como precondicion
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//que el esquema del geoproceso haya sido creado
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// Prepare the result
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schemaManager.createOrAlterSchema(createLayerDefinition()); |
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writer.preProcess(); |
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Strategy strategy = |
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StrategyManager.getStrategy(firstLayer); |
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FeaturePersisterProcessor2 featureProcessor = |
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new FeaturePersisterProcessor2(writer);
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Strategy overlayStrategy = |
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StrategyManager.getStrategy(overlayLayer); |
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DifferenceVisitor visitor = new DifferenceVisitor(overlayLayer,
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featureProcessor, overlayStrategy, onlyClipLayerSelection); |
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if (onlyFirstLayerSelection) {
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strategy.process(visitor, firstLayer.getRecordset() |
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.getSelection(), cancelMonitor); |
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} else {
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strategy.process(visitor, cancelMonitor); |
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} |
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} catch (EditionException e) {
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throw new GeoprocessException( |
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"Error al crear el esquema/fichero de la nueva capa");
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} catch (DriverException e) {
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throw new GeoprocessException( |
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"Error de driver al calcular el geoproceso interseccion");
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} catch (com.iver.cit.gvsig.fmap.DriverException e) {
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throw new GeoprocessException( |
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"Error de driver al calcular el geoproceso interseccion");
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} catch (VisitException e) {
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throw new GeoprocessException( |
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"Error al procesar el feature de una capa durante el geoproceso interseccion");
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}finally{
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finished = true;
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} |
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} |
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public boolean isDefined() { |
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return cancelMonitor.isDeterminatedProcess();
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} |
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public boolean isCanceled() { |
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return cancelMonitor.isCanceled();
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} |
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public boolean isFinished() { |
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return finished;
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} |
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} |
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} |