Application: gvSIG desktop » gvSIG tools: Catalog

import java.util.HashSet;

import java.util.List;

import org.gvsig.app.gui.wizards.WizardListener;

import org.gvsig.app.gui.wizards.WizardListenerSupport;

import org.gvsig.catalog.gui.LoaderWizardPanel;

import org.gvsig.fmap.dal.coverage.exception.ConnectException;

import org.gvsig.fmap.dal.exception.ValidateDataParametersException;

import org.gvsig.raster.wcs.app.wcsclient.gui.panel.WCSParamsPanel;

import org.gvsig.raster.wcs.io.WCSLayerNode;

import org.gvsig.raster.wcs.io.WCSProvider;

import org.gvsig.raster.wcs.io.WCSServerExplorer;

import org.gvsig.raster.wcs.io.WCSServerExplorerParameters;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

	private Logger logger = LoggerFactory.getLogger(WCSLayerLoader.class);

	private WCSServerExplorer explorer;

	private WCSParamsPanel wcsParamsPanel;

	public static final String FIELD_FORMAT = "format";

	public static final String FIELD_NAME = "name";

	public static final String FIELD_SRSSTR = "srsstr";

	public static final String FIELD_URI = "uri";

	public static final String FIELD_ONLINERESOURC = "onlineresources";

	public static final String FIELD_WIDTH = "width";

	public static final String FIELD_HEIGHT = "height";

	public static final String FIELD_PARAM = "parameter";

	public WCSLayerLoader(Resource resource) {

		super(resource);

	}	

	protected boolean hasSpecificLayer() {        

		return true;

	}

	protected String getLayerName() {      

		return getResource().getName();

	} 

	protected DataStoreParameters createDataStoreParameters()

			throws InitializeException, ProviderNotRegisteredException {

		DataStoreParameters dataStoreParameters = DATA_MANAGER.createStoreParameters("Wcs Store");

		if(getResource() != null){

			dataStoreParameters.setDynValue(FIELD_NAME, getLayerName());

			dataStoreParameters.setDynValue(FIELD_ONLINERESOURC, createOnlineResources());

		}

		if(parseQuery(dataStoreParameters, getResource().getLinkage())){

			return dataStoreParameters;

		}

		return null;

	}

	protected Map createOnlineResources() {

		Map args = new HashMap();

		args.put("GepCoverage", getResource().getLinkage());      

		return args;

	}

	protected String extensionPointName() {

		return "OGC:WCS";

	}

	/**

	 * Builds a coverage starting from a full GetCoverage URL.

	 * (Using this is not a regular function)

	 */

	private boolean parseQuery(DataStoreParameters dataStoreParameters, String link){

		String host = null;

		String queryString = null;

		int index = link.indexOf("?");

		if (index > 0){        

			host = link.substring(0, index);

			queryString = link.substring(index+1);

		}else{

			host = link;

			queryString = "";

		}

		if(link.indexOf('?') > -1){

			queryString = link.substring(link.indexOf('?')+1);

			dataStoreParameters.setDynValue(FIELD_URI, link.substring(0,link.indexOf('?')));

			String[] params = queryString.split("&");

			for (int i = 0; i < params.length; i++) {

				if (params[i]!= null){

					String[] nameValue = params[i].split("=");

					if(nameValue.length == 2){

						String param = nameValue[0].toUpperCase();

						if (param.equals("CRS")){

							dataStoreParameters.setDynValue(FIELD_SRSSTR, nameValue[1]);

						}else if (param.equals("FORMAT")){

							dataStoreParameters.setDynValue(FIELD_FORMAT, nameValue[1]);

						}else if (param.equals("WIDTH")){

							dataStoreParameters.setDynValue(FIELD_WIDTH, nameValue[1]);

						}else if (param.equals("HEIGHT")){

							dataStoreParameters.setDynValue(FIELD_HEIGHT, nameValue[1]);

						}else if (param.equals("BANDS")){

							dataStoreParameters.setDynValue(FIELD_PARAM, nameValue[1]);

						}                   

					}

				}

			}  

		}else{

			dataStoreParameters.setDynValue(FIELD_URI, link);

			try {

				WCSServerExplorerParameters explorerParams;

				explorerParams = (WCSServerExplorerParameters) DATA_MANAGER.createServerExplorerParameters(WCSProvider.NAME);

				explorerParams.setHost(host);

				explorer = (WCSServerExplorer) DATA_MANAGER.createServerExplorer(explorerParams);

				explorer.connect(null);

				deleteRepitedValues();

				if(!getParams(dataStoreParameters, link)){

					return false;

				}

			} catch (ValidateDataParametersException e) {

				// TODO Auto-generated catch block

				e.printStackTrace();

				return false;

			} catch (InitializeException e) {

				// TODO Auto-generated catch block

				e.printStackTrace();

				return false;

			} catch (ProviderNotRegisteredException e) {

				// TODO Auto-generated catch block

				e.printStackTrace();

				return false;

			} catch (ConnectException e) {

				// TODO Auto-generated catch block

				e.printStackTrace();

			}

		}

		return true;

	}	

	private void deleteRepitedValues() {

		for(int i=0; i<explorer.getCoverageList().length; i++){

			WCSLayerNode layer = explorer.getCoverageList()[i];

			deleteDuplicatedStringsFromList(layer.getFormats());

			deleteDuplicatedStringsFromList(layer.getInterpolationMethods());

			deleteDuplicatedStringsFromList(layer.getSRSs());

		}

	}

	private void deleteDuplicatedStringsFromList(List list){

		HashSet hs = new HashSet();

		hs.addAll(list);

		list.clear();

		list.addAll(hs);

	}

	private boolean getParams(DataStoreParameters dataStoreParameters, String link) {

		try{

			wcsParamsPanel = new WCSParamsPanel();

			wcsParamsPanel.setListenerSupport(new WizardListenerSupport());

			wcsParamsPanel.setWizardData(explorer);

			LoaderWizardPanel panel = new LoaderWizardPanel(wcsParamsPanel, dataStoreParameters);

			return panel.showWizardOnDialog();

		}catch(NoClassDefFoundError e1){

			logger.info("No est? instalada la extensi?n de raster");

			return false;

		}

	}

	protected String getErrorMessage() {

		return Messages.getText("wcsError") + ".\n" +

				Messages.getText("link") + ": " + 

				getResource().getLinkage();		

	}

	protected String getWindowMessage() {

		return Messages.getText("wcsLoad");

	}