Application: gvSIG desktop » gvSIG raster

package org.gvsig.wmts.provider;

import java.io.IOException;

import java.net.ConnectException;

import java.net.URL;

import java.util.ArrayList;

import java.util.HashSet;

import java.util.Iterator;

import java.util.Set;

import org.cresques.cts.IProjection;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.gvsig.fmap.crs.CRSFactory;

import org.gvsig.fmap.dal.DataServerExplorer;

import org.gvsig.fmap.dal.DataServerExplorerParameters;

import org.gvsig.fmap.dal.DataStoreParameters;

import org.gvsig.fmap.dal.NewDataStoreParameters;

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

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

import org.gvsig.fmap.dal.spi.AbstractDataServerExplorer;

import org.gvsig.fmap.dal.spi.DataServerExplorerProviderServices;

import org.gvsig.raster.wmts.ogc.WMTSClient;

import org.gvsig.raster.wmts.ogc.WMTSOGCLocator;

import org.gvsig.raster.wmts.ogc.struct.WMTSLayer;

import org.gvsig.raster.wmts.ogc.struct.WMTSStyle;

import org.gvsig.raster.wmts.ogc.struct.WMTSTheme;

import org.gvsig.raster.wmts.ogc.struct.WMTSThemes;

public class WMTSRasterServerExplorer extends AbstractDataServerExplorer implements DataServerExplorerProvider {

    private static final Logger logger =

        LoggerFactory.getLogger(WMTSRasterServerExplorer.class);

    public static final String NAME = "WMTSRasterServerExplorer";

    private URL service = null;

    //WMS Parameters

    private WMTSClient wmtsClient = null;

    protected WMTSRasterServerExplorer(DataServerExplorerParameters parameters,

        DataServerExplorerProviderServices providerServices) throws InitializeException {

        super(parameters, providerServices);

        // TODO Auto-generated constructor stub

        boolean override = false;

        this.service = (URL)(parameters.getDynValue(WMTSRasterServerExplorerParameters.WMTS_SERVICE_PARAMETER_NAME));

        if (wmtsClient == null){

            try {

                WMTSOGCLocator.getManager().createWMTSClient(service.toString());

                wmtsClient = WMTSOGCLocator.getManager().createWMTSClient(service.toString());

//                wmtsClient.setForceChangeAxisOrder(getParameters().isLongitudeFirst());

                if (!wmtsClient.connect(override, null)) {

                    throw new ConnectException("Error connecting");

                }

//                if (status == null){

//                    status = wmtsClient.createStatus();

//                }

//

//                wmtsClient.getCapabilities(status, true, null);

            } catch (ConnectException e) {

                throw new InitializeException("Not possible to connect with " + service, e);

            } catch (IOException e) {

                throw new InitializeException("Not possible to connect with " + service, e);

            }

        }

    }

    @Override

    public String getProviderName() {

        return WMTSRasterProvider.NAME;

    }

    @Override

    public boolean canAdd() {

        return false;

    }

    @Override

    public boolean canAdd(String storeName) throws DataException {

        return false;

    }

    @Override

    public List<WMTSRasterProviderParameters> list() throws DataException {

        List<WMTSRasterProviderParameters> result = new ArrayList<WMTSRasterProviderParameters>();

        @SuppressWarnings("unchecked")

        WMTSThemes themes = wmtsClient.getLayerListAsThemes();

        List<WMTSLayer> wmtsLayers = new ArrayList<WMTSLayer>();

        for (int i = 0; i < themes.getChildCount(); i++) {

            WMTSTheme theme = themes.getChildren(i);

            wmtsLayers.add(theme.getLayer());

        }

        for (Iterator<WMTSLayer> iterator = wmtsLayers.iterator(); iterator.hasNext();) {

            WMTSLayer wmtsLayer = (WMTSLayer) iterator.next();

            WMTSRasterProviderParameters params =  new WMTSRasterProviderParameters();

            params.setService(this.service);

            params.setLayer(wmtsLayer.getTitle());

            @SuppressWarnings("unchecked")

            List<WMTSStyle> styles = wmtsLayer.getStyle();

            if (styles != null && styles.size() > 0) {

                params.setStyle(((WMTSStyle) (styles.get(0))).getIdentifier());

            }

            @SuppressWarnings("unchecked")

            List<String> formats = wmtsLayer.getFormat();

            if(formats!=null && formats.size()>0){

                params.setFormat((String)(formats.get(0)));

            }

            @SuppressWarnings("unchecked")

             List<String> infoFormats = wmtsLayer.getInfoFormat();

            if(infoFormats!=null && infoFormats.size()>0){

                params.setInfoFormat((String)infoFormats.get(0));

            }

            @SuppressWarnings("unchecked")

            List<String> allSrs = wmtsLayer.getSrsList();

            if(allSrs!=null && allSrs.size()>0){

                int i=0;

                while(i<allSrs.size()){

                    String srs = allSrs.get(i);

                    if(isValidSrs(srs)){

                        params.setCRS(srs);

                        IProjection crs=CRSFactory.getCRS(srs);

                        //FIXME: ?Qu? condiciones se deben cumplir para que este par?metro se deba poner a true?

//                        params.setXYAxisOrder(crs.isProjected());

//                        params.setXYAxisOrder(false);

                        break;

                    }

                    i++;

                }

                if(i>=allSrs.size()){

                    throw new IllegalArgumentException(this.getProviderName()

                            + ": The server does not provide any valid srs.'");

                }

            }

            result.add(params);

        }

        return result;

    }

    @Override

    public List<WMTSRasterProviderParameters> list(int mode) throws DataException {

        if(mode!=DataServerExplorer.MODE_RASTER){

            return null;

        }

        return list();

    }

    @Override

    public boolean add(String provider, NewDataStoreParameters parameters, boolean overwrite) throws DataException {

        return false;

    }

    @Override

    public void remove(DataStoreParameters parameters) throws DataException {

        throw new UnsupportedOperationException("Can't remove a WMTS provider.");

    }

    @Override

    public NewDataStoreParameters getAddParameters(String storeName) throws DataException {

        return null;

    }

    @Override

    public List<String> getDataStoreProviderNames() {

        List<String> x = new ArrayList<String>();

        x.add(WMTSRasterProvider.NAME);

        return x;

    }

     * @param params

     * @return list of available srs for the params

    @SuppressWarnings("unchecked")

    public List<String> getSrss(WMTSRasterProviderParameters params) {

        String layer = params.getLayer();

        Set<String> setSrs = new HashSet<String>();

        WMTSLayer wmtsLayer = wmtsClient.getLayer(layer);

        List<String> allSrs = wmtsLayer.getSrsList();

        for (Iterator<String> iterator2 = allSrs.iterator(); iterator2.hasNext();) {

            String srs = iterator2.next();

            if (isValidSrs(srs)) {

                setSrs.add(srs);

            }

        }

        return new ArrayList<String>(setSrs);

    }

    private boolean isValidSrs(String srs){

        try{

            IProjection crs=CRSFactory.getCRS(srs);

            if(crs!=null){

                return true;

            }

        }catch(Exception e){

            logger.info("Can't get crs from: '"+srs+"' code", e);

            return false;

        }

        return false;

    }