root / trunk / extensions / extGeoProcessing / src / com / iver / cit / gvsig / geoprocess / spatialjoin / fmap / SpatialJoinGeoprocess.java @ 5628
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/*
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* Created on 28-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: SpatialJoinGeoprocess.java 5628 2006-06-02 18:21:28Z azabala $
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* $Log$
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* Revision 1.2 2006-06-02 18:21:28 azabala
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* *** empty log message ***
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*
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* Revision 1.1 2006/05/24 21:09:47 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 1.10 2006/05/08 15:38:05 azabala
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* added nn spatial join with rtree
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*
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* Revision 1.9 2006/05/02 18:57:33 azabala
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* added a new implementation of nearest neighbour finder, based in RTree spatial index
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*
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* Revision 1.8 2006/05/01 19:09:23 azabala
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* Intento de optimizar el spatial join por vecino mas proximo (no funciona)
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*
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* Revision 1.7 2006/03/21 19:29:36 azabala
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* *** empty log message ***
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*
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* Revision 1.6 2006/03/17 19:53:43 azabala
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* *** empty log message ***
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*
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* Revision 1.5 2006/03/15 18:34:31 azabala
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* *** empty log message ***
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*
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* Revision 1.4 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 1.3 2006/03/07 21:01:33 azabala
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* *** empty log message ***
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*
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* Revision 1.2 2006/03/06 19:48:39 azabala
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* *** empty log message ***
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*
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* Revision 1.1 2006/03/05 19:59:32 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.cit.gvsig.geoprocess.spatialjoin.fmap; |
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import java.util.Map; |
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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.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.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.fmap.spatialindex.INearestNeighbourFinder; |
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import com.iver.cit.gvsig.fmap.spatialindex.ISpatialIndex; |
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import com.iver.cit.gvsig.fmap.spatialindex.RTreeJsi; |
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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.GeoprocessException; |
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import com.iver.cit.gvsig.geoprocess.core.fmap.ITwoLayersGeoprocess; |
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import com.iver.cit.gvsig.geoprocess.core.fmap.XTypes; |
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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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* This geoprocess implements Spatial Join operation.
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* A spatial join is a join where the criteria to link
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* a feature of layer A to one (or many) features of layer B
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* is a spatial critera.<br>
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* We can do two types of spatial join:
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* <ul>
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* <li><b>Intersect spatial join (1->N).</b> Given a feature, looks for
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* all intersecting features, and apply a sumarization function
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* to all of them. The result is a feature where all numeric features
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* of layer B have been grouped by one or many sumarization functions.
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* </li>
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* <li><b>Nearest spatial join (1->N)</b>Given a feature, looks
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* for the nearest feature of layer B, and tooks its fields.
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* </li>
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* </ul>
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* @author azabala
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*
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*/
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public class SpatialJoinGeoprocess extends AbstractGeoprocess |
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implements ITwoLayersGeoprocess {
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/**
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* overlay layer
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*/
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private FLyrVect secondLayer;
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/**
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* Relates each numeric field of target layer with
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* many sumarization functions
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*/
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private Map fields_sumFunctions; |
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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 onlySecondLayerSelection = false; |
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/**
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* flag to apply a nearest spatial join (1 to 1 join) or a intersect spatial
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* join (1 to m join)
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*/
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private boolean nearestSpatialJoin = true; |
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/**
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* Visitor that will do the process
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*/
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private SpatialJoinVisitor visitor = null; |
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/**
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* It will process results of joined features
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*/
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private FeaturePersisterProcessor2 processor;
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public SpatialJoinGeoprocess(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.secondLayer = 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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/**
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* PRECONDITION: We must setResultLayerProperties before
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* to call setParameters.
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* FIXME
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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.onlySecondLayerSelection = secondLayerSelection.booleanValue();
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if(writer == null) |
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throw new GeoprocessException("Hay que hacer setResultLayerProperties antes de hacer setParameters en el spatial join"); |
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processor = |
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new FeaturePersisterProcessor2(writer);
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processor = new FeaturePersisterProcessor2(writer);
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Boolean nearest = (Boolean) params |
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.get("nearest");
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if (nearest != null) |
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this.nearestSpatialJoin = nearest.booleanValue();
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if(nearestSpatialJoin){
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try {
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// ISpatialIndex spatialIndex = secondLayer.getISpatialIndex();
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// if(spatialIndex != null &&
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// (spatialIndex instanceof INearestNeighbourFinder))
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// {
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visitor = new SpatiallyIndexedSpatialJoinVisitor(this.firstLayer, |
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this.secondLayer,
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processor); |
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// }else{
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//
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// visitor = new NearestSpatialJoinVisitor(this.firstLayer,
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// this.secondLayer,
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// processor);
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// }
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} catch (DriverException e) {
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throw new GeoprocessException("Error preparando el procesado de las capas a enlazar"); |
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} |
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}else{
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try {
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visitor = new IntersectSpatialJoinVisitor(this.firstLayer, |
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this.secondLayer,
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this.fields_sumFunctions,
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processor); |
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} catch (DriverException e) {
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throw new GeoprocessException("Error preparando el procesado de las capas a enlazar"); |
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} |
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} |
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visitor.setFeatureProcessor(processor); |
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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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"Spatial Join: capa de entrada a null");
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if (secondLayer == null) |
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throw new GeoprocessException("Spatial Join: 2? capa 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 spatial join sin especificar capa de resultados");
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} |
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try {
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int firstLayerType = firstLayer.getShapeType();
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int secondLayerType = secondLayer.getShapeType();
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if(firstLayerType == XTypes.POINT
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&& secondLayerType == XTypes.POINT |
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&& (!nearestSpatialJoin)){
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throw new GeoprocessException( |
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"No est? permitido el spatial join M:N entre puntos");
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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 la geometria de las capas a enlazar espacialmente");
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} |
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} |
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public void process() throws GeoprocessException { |
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Strategy strategy = |
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StrategyManager.getStrategy(firstLayer); |
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Strategy secondLyrStrategy = |
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StrategyManager.getStrategy(secondLayer); |
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visitor.setCancelableStrategy(secondLyrStrategy); |
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visitor.setOnlySecondLyrSelection(onlySecondLayerSelection); |
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try {
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if(this.onlyFirstLayerSelection){ |
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strategy.process(visitor, |
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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 (DriverException e) {
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throw new GeoprocessException("Error al acceder a los datos durante un spatial join"); |
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} catch (VisitException e) {
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throw new GeoprocessException("Error al procesar los datos durante un spatial join"); |
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} |
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} |
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//FIXME to throw an edition exception in
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//schema manager
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public void cancel() { |
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try {
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this.schemaManager.drop();
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} catch (EditionException e) {
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e.printStackTrace(); |
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} |
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} |
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/**
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* FIXME Lanzar una excepcion si esto se llama antes
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* que el setParameters (esto me lo aseguro obligando a meter
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* los datos en el constructor)
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*
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* FIXME A?adir, en las relaciones 1-N, el n?mero de features
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* que participan en la relaci?n de la parte de N
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*/
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public ILayerDefinition createLayerDefinition() {
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ILayerDefinition solution = null;
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try {
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solution = visitor.getResultLayerDefinition(); |
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} catch (GeoprocessException e) {
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} |
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return solution;
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} |
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public Map getFields_sumFunctions() { |
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return fields_sumFunctions;
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} |
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public void setFields_sumFunctions(Map fields_sumFunctions) { |
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this.fields_sumFunctions = fields_sumFunctions;
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} |
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public IMonitorableTask createTask() {
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try {
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return new SpatialJoinMonitorableTask(); |
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} catch (Exception e) { |
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return null; |
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} |
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} |
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class SpatialJoinMonitorableTask implements IMonitorableTask { |
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private CancellableMonitorable cancelMonitor = null; |
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String SPJOIN_MESSAGE = PluginServices.getText(this, "Mensaje_enlace_espacial"); |
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String SPJOIN_NOTE = PluginServices.getText(this, "Mensaje_procesando_enlace_espacial"); |
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String OF = PluginServices.getText(this, "De"); |
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private boolean finished = false; |
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SpatialJoinMonitorableTask() throws DriverIOException, DriverException {
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initialize(); |
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} |
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void initialize() throws DriverIOException, DriverException { |
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cancelMonitor = createCancelMonitor(); |
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} |
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private CancellableMonitorable createCancelMonitor()
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throws DriverIOException, DriverException {
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DefaultCancellableMonitorable monitor = new
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DefaultCancellableMonitorable(); |
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monitor.setInitialStep(0);
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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 += (2 * selection.cardinality());
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} else {
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numSteps += 2 * 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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return SPJOIN_MESSAGE;
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} |
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public String getNote() { |
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return SPJOIN_NOTE + " " + |
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getCurrentStep() + " "+
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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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SpatialJoinGeoprocess.this.cancel(); |
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} |
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public void run() throws GeoprocessException { |
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ISpatialIndex oldSptIdx = null;
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if(nearestSpatialJoin){
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oldSptIdx = secondLayer.getISpatialIndex(); |
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if(oldSptIdx == null || ! (oldSptIdx instanceof INearestNeighbourFinder)){ |
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RTreeJsi newSptIdx = new RTreeJsi();
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newSptIdx.create(); |
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ReadableVectorial source = secondLayer.getSource(); |
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try {
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int numFeatures = source.getShapeCount();
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for(int i = 0; i < numFeatures; i++){ |
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IGeometry geometry = source.getShape(i); |
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newSptIdx.insert(geometry.getBounds2D(), i); |
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} |
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} catch (DriverIOException e) {
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throw new GeoprocessException("Error intentando indexar para busqueda por mas proximo"); |
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} |
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secondLayer.setISpatialIndex(newSptIdx); |
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}//if oldSptIdx
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}//if nearest
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if(visitor instanceof SpatiallyIndexedSpatialJoinVisitor) |
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{
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//here checks for Nearest Neighbour capabilitie
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((SpatiallyIndexedSpatialJoinVisitor)visitor).initialize(); |
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} |
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Strategy strategy = |
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StrategyManager.getStrategy(firstLayer); |
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Strategy secondLyrStrategy = |
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StrategyManager.getStrategy(secondLayer); |
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visitor.setCancelableStrategy(secondLyrStrategy); |
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visitor.setOnlySecondLyrSelection(onlySecondLayerSelection); |
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try {
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if(onlyFirstLayerSelection){
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strategy.process(visitor, |
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firstLayer.getRecordset(). |
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getSelection(), |
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cancelMonitor); |
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}else{
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strategy.process(visitor, cancelMonitor); |
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} |
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// If we changed spatial index to allow Nearest Neighbour queries,
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//recover the old spatial index
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if(oldSptIdx != null) |
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secondLayer.setISpatialIndex(oldSptIdx); |
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} catch (DriverException e) {
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throw new GeoprocessException("Error al acceder a los datos durante un spatial join"); |
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} catch (VisitException e) {
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throw new GeoprocessException("Error al procesar los datos durante un spatial join"); |
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} |
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finally{
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finished = true;
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} |
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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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|
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public boolean isCanceled() { |
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return cancelMonitor.isCanceled();
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} |
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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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|
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|
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} |