org.fao.geonet.kernel.harvest.harvester.webdav.WAFRemoteFile.java Source code

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Here is the source code for org.fao.geonet.kernel.harvest.harvester.webdav.WAFRemoteFile.java

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//=============================================================================
//===   Copyright (C) 2001-2012 Food and Agriculture Organization of the
//===   United Nations (FAO-UN), United Nations World Food Programme (WFP)
//===   and United Nations Environment Programme (UNEP)
//===
//===   This program is free software; you can redistribute it and/or modify
//===   it under the terms of the GNU General Public License as published by
//===   the Free Software Foundation; either version 2 of the License, or (at
//===   your option) any later version.
//===
//===   This program is distributed in the hope that it will be useful, but
//===   WITHOUT ANY WARRANTY; without even the implied warranty of
//===   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
//===   General Public License for more details.
//===
//===   You should have received a copy of the GNU General Public License
//===   along with this program; if not, write to the Free Software
//===   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
//===
//===   Contact: Jeroen Ticheler - FAO - Viale delle Terme di Caracalla 2,
//===   Rome - Italy. email: geonetwork@osgeo.org
//==============================================================================

package org.fao.geonet.kernel.harvest.harvester.webdav;

import jeeves.utils.PasswordUtil;
import jeeves.utils.Xml;
import org.apache.commons.httpclient.HttpException;
import org.apache.webdav.lib.WebdavResource;
import org.fao.geonet.constants.Geonet;
import org.fao.geonet.kernel.SchemaManager;
import org.fao.geonet.util.Sha1Encoder;
import org.jdom.Element;
import java.net.URL;
import java.util.HashMap;
import java.util.Map;

//=============================================================================

class WAFRemoteFile implements RemoteFile {

    public class WXS {
        public static final String WMS = "SERVICE=WMS";
        public static final String WCS = "SERVICE=WCS";
        public static final String WFS = "SERVICE=WFS";
        public static final String WPS = "SERVICE=WPS";
    }

    //---------------------------------------------------------------------------
    //---
    //--- Constructor
    //---
    //---------------------------------------------------------------------------

    public WAFRemoteFile(String path) {
        this.path = path;
    }

    //---------------------------------------------------------------------------
    //---
    //--- RemoteFile interface
    //---
    //---------------------------------------------------------------------------

    public Element getMetadata(SchemaManager schemaMan) throws Exception {
        try {
            String type = WAFRetriever.getFileType(this.path);
            if (type.equals(WAFRetriever.type_GetCapabilities))
                return getMdFromService(path, schemaMan);
            else if (type.equals(WAFRetriever.type_xml))
                return Xml.loadFile(new URL(path));
            else
                return null;
        } catch (HttpException x) {
            throw new Exception("HTTPException : " + x.getMessage());
        }
    }

    //---------------------------------------------------------------------------
    //---
    //--- Get Metadata from GetCapabilities file (Service)
    //---
    //---------------------------------------------------------------------------   

    private Element getMdFromService(String url, SchemaManager schemaMan) throws Exception {
        Element el = null;
        String styleSheet = getStyleSheet(url, schemaMan);
        if (styleSheet == null)
            return null;
        try {
            Element xml = Xml.loadFile(new URL(url));

            // md5 the full capabilities URL
            String uuid = Sha1Encoder.encodeString(url); // is the service identifier

            Map<String, String> param = new HashMap<String, String>();
            param.put("uuid", uuid);

            el = Xml.transform(xml, styleSheet, param);
        } catch (HttpException x) {
            // TODO Auto-generated catch block
            throw new Exception("HTTPException : " + x.getMessage());
        }
        return el;
    }

    private String getStyleSheet(String url, SchemaManager schemaMan) {
        String serviceType = getServiceType(url);
        if (serviceType == null)
            return null;
        String styleSheet = schemaMan.getSchemaDir(outputSchema) + Geonet.Path.CONVERT_STYLESHEETS
                + "/OGCWxSGetCapabilitiesto19119/" + "/OGC" + serviceType
                + "GetCapabilities-to-ISO19119_ISO19139.xsl";
        return styleSheet;
    }

    //---------------------------------------------------------------------------
    //---
    //--- Get Service Type
    //---
    //---------------------------------------------------------------------------

    private String getServiceType(String url) {
        if (url.toUpperCase().contains(WXS.WMS))
            return "WMS";
        else if (url.toUpperCase().contains(WXS.WCS))
            return "WCS";
        else if (url.toUpperCase().contains(WXS.WFS))
            return "WFS";
        else if (url.toUpperCase().contains(WXS.WPS))
            return "WPS";
        else
            return null;
    }

    //---------------------------------------------------------------------------

    public boolean isMoreRecentThan(String localChangeDate) {
        return true;
    }

    //---------------------------------------------------------------------------
    //---
    //--- Variables
    //---
    //---------------------------------------------------------------------------

    private String path;
    private static String outputSchema = "iso19139";

    public String getPath() {
        return path;
    }

    public String getChangeDate() {
        return null;
    }

}

//=============================================================================