svn-gvsig-desktop / tags / v1_0_2_Build_898 / extensions / extGeoProcessing / src / com / iver / cit / gvsig / geoprocess / core / fmap / AbstractGeoprocessFeatureVisitor.java @ 10513
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/*
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* Created on 06-jul-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: AbstractGeoprocessFeatureVisitor.java 6487 2006-07-21 09:08:57Z azabala $
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* $Log$
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* Revision 1.1 2006-07-21 09:08:15 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.core.fmap; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.edition.EditionException; |
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import com.iver.cit.gvsig.fmap.layers.FLayer; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.AlphanumericData; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.VectorialData; |
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import com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor; |
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import com.iver.cit.gvsig.fmap.operations.strategies.VisitException; |
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/**
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* Abstract base class to all feature visitor created
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* for geoprocessing.
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* @author azabala
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*
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*/
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public abstract class AbstractGeoprocessFeatureVisitor implements |
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FeatureVisitor {
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/**
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* processes visited features.
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*/
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FeatureProcessor featureProcessor; |
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/**
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* Constructor.
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* It receives a FeatureProcessor to process visited features
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* (usually to save them)
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* @param processor
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*/
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public AbstractGeoprocessFeatureVisitor(FeatureProcessor processor){
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this.featureProcessor = processor;
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} |
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public abstract void visit(IGeometry g, int index) throws VisitException; |
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public abstract String getProcessDescription(); |
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/**
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* finishes visitation by closing result layer writing.
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*/
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public void stop(FLayer layer) { |
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featureProcessor.finish(); |
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} |
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/**
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* to start the visit process, prepares result layer.
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*/
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public boolean start(FLayer layer) { |
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if (layer instanceof AlphanumericData && |
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layer instanceof VectorialData) {
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try {
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this.featureProcessor.start();
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}catch (EditionException e) {
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return false; |
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} |
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return true; |
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} |
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return false; |
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} |
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} |
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