svn-gvsig-desktop / tags / v1_1_Build_1010 / extensions / extGeoProcessing / src / com / iver / cit / gvsig / geoprocess / impl / buffer / fmap / BufferGeoprocess.java @ 12804
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/*
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* Created on 01-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: BufferGeoprocess.java 12804 2007-07-26 12:18:11Z $
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* $Log$
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* Revision 1.3.2.1 2007-07-12 09:27:16 azabala
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* optimizations in dissolution of buffered features (we dont use strategies to avoid reading of geometries already processed)
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*
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* Revision 1.3 2006/07/21 11:04:50 azabala
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* Unified createTask and process() methods
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*
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* Revision 1.2 2006/06/29 07:33:57 fjp
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* Cambios ISchemaManager y IFieldManager por terminar
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*
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* Revision 1.1 2006/06/20 18:20:45 azabala
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* first version in cvs
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*
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* Revision 1.2 2006/06/02 18:20:58 azabala
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* cuando el buffer es con dissolve se crea indice espacial para optimizar
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*
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* Revision 1.1 2006/05/24 21:14:41 azabala
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* primera version en cvs despues de refactoring orientado a crear un framework extensible de geoprocessing
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*
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* Revision 1.14 2006/05/01 19:18:09 azabala
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* revisi?n general del buffer (a?adidos anillos concentricos, buffers interiores y exteriores, etc)
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*
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* Revision 1.13 2006/03/23 21:02:58 azabala
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* *** empty log message ***
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*
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* Revision 1.12 2006/03/17 19:52:31 azabala
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* *** empty log message ***
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*
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* Revision 1.11 2006/03/14 19:35:13 azabala
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* *** empty log message ***
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*
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* Revision 1.10 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 1.9 2006/03/07 21:01:33 azabala
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* *** empty log message ***
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*
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* Revision 1.8 2006/03/06 19:48:39 azabala
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* *** empty log message ***
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*
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* Revision 1.7 2006/03/05 19:56:40 azabala
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* *** empty log message ***
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*
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* Revision 1.6 2006/02/17 16:04:50 azabala
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* *** empty log message ***
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*
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* Revision 1.5 2006/02/13 21:13:49 azabala
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* *** empty log message ***
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*
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* Revision 1.4 2006/02/13 18:38:03 azabala
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* *** empty log message ***
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*
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* Revision 1.3 2006/02/13 17:52:45 azabala
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* *** empty log message ***
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*
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* Revision 1.2 2006/02/12 21:02:44 azabala
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* *** empty log message ***
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*
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* Revision 1.1 2006/02/02 19:47:12 azabala
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* many refactorings
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*
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* Revision 1.1 2006/02/01 19:42:04 azabala
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* First version in CVS
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*
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*
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*/
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package com.iver.cit.gvsig.geoprocess.impl.buffer.fmap; |
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import java.io.File; |
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import java.io.IOException; |
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import java.util.Map; |
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import org.cresques.cts.ICoordTrans; |
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import org.cresques.cts.IProjection; |
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import com.iver.andami.PluginServices; |
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import com.iver.cit.gvsig.fmap.DriverException; |
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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.FieldDescription; |
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import com.iver.cit.gvsig.fmap.drivers.ILayerDefinition; |
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import com.iver.cit.gvsig.fmap.drivers.LayerDefinition; |
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import com.iver.cit.gvsig.fmap.drivers.SHPLayerDefinition; |
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import com.iver.cit.gvsig.fmap.drivers.shp.IndexedShpDriver; |
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import com.iver.cit.gvsig.fmap.edition.EditionException; |
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import com.iver.cit.gvsig.fmap.edition.writers.shp.ShpWriter; |
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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.layers.LayerFactory; |
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import com.iver.cit.gvsig.fmap.layers.ReadableVectorial; |
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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.cit.gvsig.geoprocess.core.fmap.AbstractGeoprocess; |
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import com.iver.cit.gvsig.geoprocess.core.fmap.FeaturePersisterProcessor2; |
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import com.iver.cit.gvsig.geoprocess.core.fmap.GeometryPersisterProcessor; |
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import com.iver.cit.gvsig.geoprocess.core.fmap.GeoprocessException; |
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import com.iver.cit.gvsig.geoprocess.core.fmap.IOneLayerGeoprocess; |
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import com.iver.cit.gvsig.geoprocess.core.fmap.XTypes; |
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import com.iver.cit.gvsig.geoprocess.impl.dissolve.fmap.AdjacencyDissolveVisitor; |
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import com.iver.cit.gvsig.geoprocess.impl.dissolve.fmap.DissolveVisitor; |
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import com.iver.utiles.swing.threads.CancellableMonitorable; |
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import com.iver.utiles.swing.threads.DefaultCancellableMonitorable; |
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import com.iver.utiles.swing.threads.IMonitorableTask; |
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/**
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* Geoprocess that computes a buffer area around each feature's geometry of the
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* input layer. <br>
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* All the points interior to this buffer area has to be at a distance inferior
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* to "buffer distance" to the original geometry. This buffer distance could be
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* constant, or it could be a function of the value of a feature attribute.<br>
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*
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* @author azabala
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*
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*/
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public class BufferGeoprocess extends AbstractGeoprocess implements |
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IOneLayerGeoprocess {
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/**
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* flag that represents buffer computing with one only buffer distance.
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*/
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public static final byte CONSTANT_DISTANCE_STRATEGY = 0; |
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/**
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* buffer computing with variable buffer distance in function of feature
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* attribute value
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*/
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public static final byte ATTRIBUTE_DISTANCE_STRATEGY = 1; |
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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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* the geoprocess will operate only with selected elements of layer, or with
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* all elements.<br>
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* By default, it work with all elements.
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*/
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private boolean bufferOnlySelection = false; |
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/**
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* this flag makes the process to dissolve or not geometries of the result
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* layer, to avoid intersections in a polygon layer. By default, is true.<br>
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*/
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private boolean dissolveBuffers = false; |
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/**
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* Iterates over input layer geometries to compute buffered geometries by
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* using a distance buffer function.
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*/
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private BufferVisitor bufferVisitor;
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/**
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* Constructor
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*
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* @param bufferLayer
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* layer to buffer
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*/
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public BufferGeoprocess(FLyrVect bufferLayer) {
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setFirstOperand(bufferLayer); |
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} |
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/**
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* Sets layer to buffer
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*/
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public void setFirstOperand(FLyrVect bufferLayer) { |
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this.firstLayer = bufferLayer;
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} |
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/**
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* Sets user entry params to this geoprocess. This params represents user
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* preferences (FLayer are not optional params)
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*/
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public void setParameters(Map params) throws GeoprocessException { |
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Boolean onlySelection = (Boolean) params.get("layer_selection"); |
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if (onlySelection != null) |
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bufferOnlySelection = onlySelection.booleanValue(); |
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Boolean dissolve = (Boolean) params.get("dissolve_buffers"); |
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if (dissolve != null) |
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dissolveBuffers = dissolve.booleanValue(); |
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Byte strategy_flat = (Byte) params.get("strategy_flag"); |
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if (strategy_flat != null |
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&& strategy_flat.byteValue() == ATTRIBUTE_DISTANCE_STRATEGY) {
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// must check attribute name not null
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String attributeName = (String) params.get("attr_name"); |
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if (attributeName != null) { |
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bufferVisitor = new AttributeBufferVisitor(attributeName);
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} else {
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throw new GeoprocessException( |
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"Buffer por atributo sin nombre de atributo");
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} |
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} else {
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// default, constant strategy
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// must check distance not null
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Double dist = (Double) params.get("buffer_distance"); |
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if (dist != null) { |
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double distance = dist.doubleValue();
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bufferVisitor = new ConstantDistanceBufferVisitor(distance);
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} else {
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throw new GeoprocessException( |
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"Buffer por dist constante sin distancia");
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} |
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}// else
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Byte capflag = (Byte) params.get("cap"); |
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if(capflag != null){ |
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bufferVisitor.setTypeOfCap(capflag.byteValue()); |
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} |
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Byte typePolFlag = (Byte) params.get("typePolBuffer"); |
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if(typePolFlag != null){ |
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bufferVisitor.setTypeOfBuffer(typePolFlag.byteValue()); |
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} |
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Integer numRingsFlag = (Integer) params.get("numRings"); |
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if(numRingsFlag != null){ |
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bufferVisitor.setNumberOfRadialBuffers(numRingsFlag.intValue()); |
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} |
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} |
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/**
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* Checks preconditions to this geoprocess (input layer mustnt be null), etc
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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("Buffer con capa de entrada 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 buffer sin especificar capa de resultados");
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} |
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} |
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/**
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* Computes buffer geoprocess, and saves results in solution layer.
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*
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*/
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public void process() throws GeoprocessException { |
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try {
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createTask().run(); |
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} catch (Exception e) { |
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throw new GeoprocessException("Error durante la ejecuci?n del buffer", e); |
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} |
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} |
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/**
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* Creates a temp layer with the file referenced by writer.
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* It is useful when you want to dissolve buffers, to avoid working
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* with intermediate results in memory.
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* @return
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* @throws IOException
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* @throws DriverException
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*/
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public FLyrVect createTempLayer() throws IOException, DriverException { |
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FLyrVect solution = null;
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String fileName = ((ShpWriter) writer).getShpPath();
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File file = new File(fileName); |
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IProjection proj = firstLayer.getProjection(); |
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IndexedShpDriver driver = new IndexedShpDriver();
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driver.open(file); |
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driver.initialize(); |
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solution = (FLyrVect) LayerFactory.createLayer(fileName, driver, file, |
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proj); |
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return solution;
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} |
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private void computeAndDissolveBuffer(Strategy strategy, |
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CancellableMonitorable cancel) throws EditionException,
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DriverException, VisitException, IOException {
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ShpWriter mainWriter = (ShpWriter) writer; |
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writer = new ShpWriter();
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String temp = System.getProperty("java.io.tmpdir") + "/buffer" |
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+ System.currentTimeMillis() + ".shp"; |
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File newFile = new File(temp); |
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((ShpWriter) writer).setFile(newFile); |
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((ShpWriter) writer) |
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.initialize((LayerDefinition) resultLayerDefinition); |
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((SHPLayerDefinition) resultLayerDefinition).setFile(newFile); |
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schemaManager.createSchema(resultLayerDefinition); |
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bufferVisitor.setBufferProcessor(new GeometryPersisterProcessor(
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resultLayerDefinition, schemaManager, writer)); |
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computeOnlyBuffers(strategy, cancel); |
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FLyrVect tempLayer = createTempLayer(); |
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writer = mainWriter; |
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FeaturePersisterProcessor2 processor = new FeaturePersisterProcessor2(
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writer); |
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AdjacencyDissolveVisitor dissolveVisitor = |
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new AdjacencyDissolveVisitor(null, processor); |
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Strategy secondPassStrategy = StrategyManager.getStrategy(tempLayer); |
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dissolveVisitor.setStrategy(secondPassStrategy); |
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long t0 = System.currentTimeMillis(); |
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secondPassStrategy.process(dissolveVisitor, cancel); |
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long t1 = System.currentTimeMillis(); |
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System.out.println((t1-t0)+" en dissolver los buffers"); |
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} |
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/**
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* Computes buffers of input layer, and saves them with the
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* actual writer.
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* @param strategy
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* @param cancel
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* @throws EditionException
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* @throws DriverException
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* @throws VisitException
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*/
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private void computeOnlyBuffers(Strategy strategy, |
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CancellableMonitorable cancel) throws EditionException,
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DriverException, VisitException {
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bufferVisitor.setBufferProcessor(new GeometryPersisterProcessor(
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this.resultLayerDefinition, this.schemaManager, this.writer)); |
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if (bufferOnlySelection) {
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strategy.process(bufferVisitor, firstLayer.getRecordset() |
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.getSelection(), cancel); |
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} else {
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strategy.process(bufferVisitor, cancel); |
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} |
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} |
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/**
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* Creates a LayerDefinition in function of:
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* a) input layer
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* b) user selections
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* c) buffer geoprocess itselt operation
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*
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* Users of this geoprocess may construct a Writer from this LayerDefinition
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* (for example, to save to shp ShpWriter needs a File and a LayerDefinition
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* -to create this file with the proper schema-)
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*
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* FIXME
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* We cant call this method before setParams(Map params). Launch a exception
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*
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* ILayerDefinition wont be the same for dissolved buffers layers
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*
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*/
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public ILayerDefinition createLayerDefinition() {
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// In a buffer geoprocess we only well have a geometry
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// and a FID
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if (resultLayerDefinition == null) { |
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// if(dissolveBuffers){
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// resultLayerDefinition = createDissolvedBuffersDefinition();
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// }else{
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if(bufferVisitor.getTypeOfBuffer() == BufferVisitor.BUFFER_INSIDE_OUTSIDE_POLY){
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resultLayerDefinition = createPositiveAndNegativeBufferDefinition(); |
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}else{
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resultLayerDefinition = createPositiveOrNegativeBufferDefinition(); |
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} |
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// }
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} |
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return resultLayerDefinition;
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} |
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/**
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* Auxilar method to create a layer definition for buffer's process which
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* needs to create only internal or external buffers.
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* @return
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*/
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protected ILayerDefinition createPositiveOrNegativeBufferDefinition(){
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ILayerDefinition resultLayerDefinition = new SHPLayerDefinition();
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resultLayerDefinition.setShapeType(XTypes.POLYGON); |
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FieldDescription[] fields = new FieldDescription[2]; |
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fields[0] = new FieldDescription(); |
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fields[0].setFieldLength(10); |
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fields[0].setFieldName("FID"); |
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fields[0].setFieldType(XTypes.BIGINT);
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fields[1] = new FieldDescription(); |
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fields[1].setFieldLength(10); |
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fields[1].setFieldDecimalCount(4); |
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fields[1].setFieldName("DIST"); |
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fields[1].setFieldType(XTypes.DOUBLE);
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resultLayerDefinition.setFieldsDesc(fields); |
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return resultLayerDefinition;
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} |
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|
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/**
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* Auxilar method to create a layer definition for buffer's process which
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* needs to create internal and external buffers.
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* @return
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*/
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protected ILayerDefinition createPositiveAndNegativeBufferDefinition(){
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ILayerDefinition resultLayerDefinition = new SHPLayerDefinition();
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resultLayerDefinition.setShapeType(XTypes.POLYGON); |
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FieldDescription[] fields = new FieldDescription[3]; |
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fields[0] = new FieldDescription(); |
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fields[0].setFieldLength(10); |
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fields[0].setFieldName("FID"); |
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fields[0].setFieldType(XTypes.BIGINT);
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fields[1] = new FieldDescription(); |
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fields[1].setFieldLength(10); |
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fields[1].setFieldDecimalCount(4); |
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fields[1].setFieldName("FROM"); |
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fields[1].setFieldType(XTypes.DOUBLE);
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fields[2] = new FieldDescription(); |
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fields[2].setFieldLength(10); |
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fields[2].setFieldDecimalCount(4); |
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fields[2].setFieldName("TO"); |
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fields[2].setFieldType(XTypes.DOUBLE);
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| 454 |
|
| 455 |
resultLayerDefinition.setFieldsDesc(fields); |
| 456 |
return resultLayerDefinition;
|
| 457 |
} |
| 458 |
|
| 459 |
/**
|
| 460 |
* Creates a CancelableMonitorable instance to monitor and cancels
|
| 461 |
* ITask's buffer creation.
|
| 462 |
* @return
|
| 463 |
*/
|
| 464 |
private DefaultCancellableMonitorable createCancelMonitor() {
|
| 465 |
DefaultCancellableMonitorable monitor = new DefaultCancellableMonitorable();
|
| 466 |
monitor.setInitialStep(0);
|
| 467 |
if (this.bufferOnlySelection) { |
| 468 |
FBitSet selection = null;
|
| 469 |
try {
|
| 470 |
selection = firstLayer.getRecordset().getSelection(); |
| 471 |
} catch (DriverException e) {
|
| 472 |
// TODO Auto-generated catch block
|
| 473 |
e.printStackTrace(); |
| 474 |
} |
| 475 |
int numSelected = selection.cardinality();
|
| 476 |
monitor.setFinalStep(numSelected); |
| 477 |
} else {
|
| 478 |
try {
|
| 479 |
monitor.setFinalStep(firstLayer.getSource().getShapeCount()); |
| 480 |
} catch (DriverIOException e) {
|
| 481 |
e.printStackTrace(); |
| 482 |
} |
| 483 |
} |
| 484 |
if (!dissolveBuffers) {
|
| 485 |
// if we dont look for adjacents, is a determinated
|
| 486 |
// task (we know how many steps we are going to do
|
| 487 |
monitor.setDeterminatedProcess(true);
|
| 488 |
|
| 489 |
} else {
|
| 490 |
monitor.setDeterminatedProcess(false);
|
| 491 |
}// if dissolvebuffer
|
| 492 |
return monitor;
|
| 493 |
} |
| 494 |
|
| 495 |
public IMonitorableTask createTask() {
|
| 496 |
/*
|
| 497 |
* Allows to monitor and cancel the task
|
| 498 |
*/
|
| 499 |
final CancellableMonitorable cancelMonitor = createCancelMonitor();
|
| 500 |
/*
|
| 501 |
* Main Message for reporting buffer geoprocess
|
| 502 |
*/
|
| 503 |
final String message = PluginServices.getText(this, "Mensaje_buffer"); |
| 504 |
/*
|
| 505 |
* Message for report individual step of buffer computation
|
| 506 |
*/
|
| 507 |
final String note = PluginServices.getText(this, |
| 508 |
"Mensaje_procesando_buffer");
|
| 509 |
/*
|
| 510 |
* Message for report individual step of dissolving of buffers
|
| 511 |
*/
|
| 512 |
final String note2 = PluginServices.getText(this, |
| 513 |
"Mensaje_procesando_buffer2");
|
| 514 |
/*
|
| 515 |
* Concatenation string
|
| 516 |
*/
|
| 517 |
final String of = PluginServices.getText(this, "De"); |
| 518 |
|
| 519 |
return new IMonitorableTask() { |
| 520 |
DissolveVisitor dissolveVisitor; |
| 521 |
|
| 522 |
private boolean finished = false; |
| 523 |
String currentNote = note;
|
| 524 |
|
| 525 |
public int getInitialStep() { |
| 526 |
return cancelMonitor.getInitialStep();
|
| 527 |
} |
| 528 |
|
| 529 |
public int getFinishStep() { |
| 530 |
return cancelMonitor.getFinalStep();
|
| 531 |
} |
| 532 |
|
| 533 |
public int getCurrentStep() { |
| 534 |
if(currentNote == note2)
|
| 535 |
return dissolveVisitor.getDissolvedGeometries().cardinality();
|
| 536 |
else
|
| 537 |
return cancelMonitor.getCurrentStep();
|
| 538 |
} |
| 539 |
|
| 540 |
public String getStatusMessage() { |
| 541 |
return message;
|
| 542 |
} |
| 543 |
|
| 544 |
public String getNote() { |
| 545 |
return currentNote + ": " + getCurrentStep() + " " + of + " " |
| 546 |
+ getFinishStep(); |
| 547 |
} |
| 548 |
|
| 549 |
public void cancel() { |
| 550 |
((DefaultCancellableMonitorable) cancelMonitor) |
| 551 |
.setCanceled(true);
|
| 552 |
BufferGeoprocess.this.cancel(); |
| 553 |
} |
| 554 |
|
| 555 |
public void run() { |
| 556 |
|
| 557 |
Strategy strategy = StrategyManager.getStrategy(firstLayer); |
| 558 |
resultLayerDefinition = createLayerDefinition(); |
| 559 |
try {
|
| 560 |
if (dissolveBuffers) {
|
| 561 |
//computeAndDissolveBuffer(strategy, cancelMonitor);
|
| 562 |
ShpWriter mainWriter = (ShpWriter) writer; |
| 563 |
writer = new ShpWriter();
|
| 564 |
String temp = System.getProperty("java.io.tmpdir") + |
| 565 |
"/buffer" +
|
| 566 |
System.currentTimeMillis() +
|
| 567 |
".shp";
|
| 568 |
File newFile = new File(temp); |
| 569 |
((ShpWriter) writer).setFile(newFile); |
| 570 |
((ShpWriter) writer).initialize( |
| 571 |
(LayerDefinition) resultLayerDefinition); |
| 572 |
((SHPLayerDefinition) resultLayerDefinition).setFile(newFile); |
| 573 |
schemaManager.createSchema(resultLayerDefinition); |
| 574 |
bufferVisitor.setBufferProcessor(new GeometryPersisterProcessor(
|
| 575 |
resultLayerDefinition, schemaManager, writer)); |
| 576 |
computeOnlyBuffers(strategy, cancelMonitor); |
| 577 |
|
| 578 |
//dissolving buffers
|
| 579 |
cancelMonitor.setCurrentStep(0);
|
| 580 |
FLyrVect tempLayer = createTempLayer(); |
| 581 |
tempLayer.createSpatialIndex(); |
| 582 |
cancelMonitor.setFinalStep(tempLayer.getSource().getShapeCount()); |
| 583 |
writer = mainWriter; |
| 584 |
FeaturePersisterProcessor2 processor = new FeaturePersisterProcessor2(
|
| 585 |
writer); |
| 586 |
// AdjacencyDissolveVisitor dissolveVisitor =
|
| 587 |
// new AdjacencyDissolveVisitor(null, processor);
|
| 588 |
dissolveVisitor = |
| 589 |
createDissolveVisitor(processor); |
| 590 |
currentNote = note2; |
| 591 |
|
| 592 |
|
| 593 |
Strategy secondPassStrategy = StrategyManager.getStrategy(tempLayer); |
| 594 |
dissolveVisitor.setStrategy(secondPassStrategy); |
| 595 |
if(dissolveVisitor instanceof AdjacencyDissolveVisitor){ |
| 596 |
((AdjacencyDissolveVisitor)dissolveVisitor).setCancelMonitor(cancelMonitor); |
| 597 |
} |
| 598 |
// secondPassStrategy.process(dissolveVisitor, cancelMonitor);
|
| 599 |
|
| 600 |
|
| 601 |
ReadableVectorial source = tempLayer.getSource(); |
| 602 |
ICoordTrans ct = tempLayer.getCoordTrans(); |
| 603 |
|
| 604 |
if(dissolveVisitor.start(tempLayer)){
|
| 605 |
source.start(); |
| 606 |
for (int i = 0; i < source.getShapeCount(); i++) { |
| 607 |
if(cancelMonitor.isCanceled()){
|
| 608 |
source.stop(); |
| 609 |
return;
|
| 610 |
} |
| 611 |
if(dissolveVisitor.getDissolvedGeometries().get(i))
|
| 612 |
continue;
|
| 613 |
IGeometry geom = source.getShape(i); |
| 614 |
if (ct != null) { |
| 615 |
geom.reProject(ct); |
| 616 |
} |
| 617 |
dissolveVisitor.visit(geom, i); |
| 618 |
}//for
|
| 619 |
source.stop(); |
| 620 |
} |
| 621 |
dissolveVisitor.stop(tempLayer); |
| 622 |
|
| 623 |
} else {
|
| 624 |
computeOnlyBuffers(strategy, cancelMonitor); |
| 625 |
} |
| 626 |
finished = true;
|
| 627 |
} catch (Exception e) { |
| 628 |
e.printStackTrace(); |
| 629 |
finished = true;
|
| 630 |
} |
| 631 |
} |
| 632 |
|
| 633 |
/**
|
| 634 |
* Creates a DissolveVisitor to dissolve computed buffers.
|
| 635 |
* If we only computed a ring buffer, dissolve
|
| 636 |
* criteria will be adjacency.
|
| 637 |
* If we computed many buffers, dissolve criteria will be
|
| 638 |
* adjacency and alphanumeric (value of FROM-TO or DISTANCE fields of the
|
| 639 |
* buffer geometry)
|
| 640 |
* @return
|
| 641 |
*/
|
| 642 |
private DissolveVisitor createDissolveVisitor(FeaturePersisterProcessor2 processor) {
|
| 643 |
//int numBuffers = bufferVisitor.getNumberOfRadialBuffers();
|
| 644 |
//if(numBuffers == 1){
|
| 645 |
return new AdjacencyDissolveVisitor(null,processor); |
| 646 |
//}
|
| 647 |
/*DOCUMENTAR ESTE CASO
|
| 648 |
else{
|
| 649 |
//Esto no funciona bien. Para dissolver buffers
|
| 650 |
//con varios rings, da errores topol?gicos.
|
| 651 |
|
| 652 |
//La ?nica soluci?n es calcular 1? la uni?n, luego
|
| 653 |
//y luego los multirings
|
| 654 |
|
| 655 |
if(bufferVisitor.getTypeOfBuffer() == BufferVisitor.BUFFER_INSIDE_OUTSIDE_POLY){
|
| 656 |
return new DissolveVisitor("FROM", processor);
|
| 657 |
}else{
|
| 658 |
return new DissolveVisitor("DIST", processor);
|
| 659 |
}
|
| 660 |
}
|
| 661 |
*/
|
| 662 |
} |
| 663 |
|
| 664 |
public boolean isDefined() { |
| 665 |
return cancelMonitor.isDeterminatedProcess();
|
| 666 |
} |
| 667 |
|
| 668 |
public boolean isCanceled() { |
| 669 |
return cancelMonitor.isCanceled();
|
| 670 |
} |
| 671 |
|
| 672 |
public boolean isFinished() { |
| 673 |
return finished;
|
| 674 |
} |
| 675 |
}; |
| 676 |
} |
| 677 |
} |