svn-gvsig-desktop / branches / v2_0_0_prep / extensions / extCatalog / src / org / gvsig / catalog / loaders / WCSLayerLoader.java @ 29625
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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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package org.gvsig.catalog.loaders; |
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import java.io.IOException; |
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import java.util.Map; |
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import java.util.TreeMap; |
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import org.gvsig.catalog.schemas.Resource; |
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import org.gvsig.fmap.mapcontext.layers.FLayer; |
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import org.gvsig.i18n.Messages; |
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import org.gvsig.tools.extensionpoint.ExtensionPoint; |
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import org.gvsig.utils.extensionPointsOld.ExtensionPointsSingleton; |
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/**
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* This class is used to load a WCS layer in gvSIG
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*
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* @author Jorge Piera Llodra (piera_jor@gva.es)
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*/
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public class WCSLayerLoader extends GvSigLayerLoader{ |
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public WCSLayerLoader(Resource resource) {
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super(resource);
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} |
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/**
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* This method loads a WSC layer from a full URL
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* @param link
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* @throws LayerLoaderException
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*/
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public void loadLayer() throws LayerLoaderException { |
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String link = getResource().getLinkage();
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String name = getResource().getName();
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try {
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FLayer flayer = createWCSLayer(link,name); |
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addLayerToView(flayer); |
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} catch (IOException e) { |
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throw new LayerLoaderException(e.getMessage(),getWindowMessage()); |
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} |
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} |
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private FLayer createWCSLayer(String link,String name) throws IOException, LayerLoaderException { |
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Map args = initFromQueryString(link,name);
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ExtensionPoint extensionPoint = (ExtensionPoint)ExtensionPointsSingleton.getInstance().get("CatalogLayers");
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try {
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return (FLayer)extensionPoint.create("OGC:WCS", args ); |
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} catch(Exception e) { |
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throw new LayerLoaderException(getErrorMessage(),getWindowMessage()); |
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} |
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} |
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/**
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* Builds a coverage starting from a full GetCoverage URL.
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* (Using this is not a regular function)
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*/
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private TreeMap initFromQueryString(String link,String name){ |
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String host = null; |
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String queryString = null; |
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if (link.compareTo("?")==0){ |
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host = link.substring(0,link.indexOf('?')); |
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queryString = link.substring(link.indexOf('?')+1); |
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}else{
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host = link; |
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queryString = "";
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} |
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queryString = link.substring(link.indexOf('?')+1); |
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TreeMap map = new TreeMap(); |
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String[] params = queryString.split("&"); |
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for (int i = 0; i < params.length; i++) { |
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if (params[i]!= null){ |
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String[] nameValue = params[i].split("="); |
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if (nameValue.length == 1){ |
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map.put(nameValue[0].toUpperCase(), ""); |
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}else if(nameValue.length == 2){ |
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map.put(nameValue[0].toUpperCase(), nameValue[1]); |
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} |
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} |
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} |
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map.put("HOST",link);
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if ((name != null) && (!name.equals(""))){ |
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map.put("COVERAGE",name);
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} |
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return map;
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} |
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/*
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* (non-Javadoc)
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* @see es.gva.cit.gvsig.catalogClient.loaders.LayerLoader#getErrorMessage()
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*/
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protected String getErrorMessage() { |
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return Messages.getText("wcsError") + ".\n" + |
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Messages.getText("link") + ": " + |
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getResource().getLinkage(); |
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} |
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/*
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* (non-Javadoc)
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* @see es.gva.cit.gvsig.catalogClient.loaders.LayerLoader#getWindowMessage()
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*/
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protected String getWindowMessage() { |
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return Messages.getText("wcsLoad"); |
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} |
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} |