view flys-client/src/main/java/de/intevation/flys/client/server/CSVExportServiceImpl.java @ 4241:49cb65d5932d

Improved the historical discharge calculation. The calculation now creates new HistoricalWQKms (new subclass of WQKms). Those WQKms are used to create new facets from (new) type 'HistoricalDischargeCurveFacet'. The chart generator is improved to support those facets.
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 24 Oct 2012 14:34:35 +0200
parents 1f2f08211a5f
children
line wrap: on
line source
package de.intevation.flys.client.server;

import java.util.ArrayList;
import java.util.List;

import java.io.Reader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.IOException;

import org.w3c.dom.Document;
import org.w3c.dom.Element;

import org.apache.log4j.Logger;

import com.google.gwt.user.server.rpc.RemoteServiceServlet;

import au.com.bytecode.opencsv.CSVReader;

import de.intevation.artifacts.common.ArtifactNamespaceContext;
import de.intevation.artifacts.common.utils.XMLUtils;

import de.intevation.artifacts.httpclient.http.HttpClient;
import de.intevation.artifacts.httpclient.http.HttpClientImpl;

import de.intevation.flys.client.shared.exceptions.ServerException;
import de.intevation.flys.client.client.services.CSVExportService;


/**
 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
 */
public class CSVExportServiceImpl
extends      RemoteServiceServlet
implements   CSVExportService
{
    private static final Logger logger =
        Logger.getLogger(CSVExportServiceImpl.class);


    public static final String ERROR_NO_EXPORT_FOUND =
        "error_no_export_found";

    public List<String[]> getCSV(
        String locale,
        String uuid,
        String name)
    throws ServerException
    {
        logger.info("CSVExportServiceImpl.getCSV");

        String url  = getServletContext().getInitParameter("server-url");

        Document requestDoc = XMLUtils.newDocument();

        XMLUtils.ElementCreator ec = new XMLUtils.ElementCreator(
            requestDoc,
            ArtifactNamespaceContext.NAMESPACE_URI,
            ArtifactNamespaceContext.NAMESPACE_PREFIX);

        Element action = ec.create("action");
        ec.addAttr(action, "type", "csv", true);
        ec.addAttr(action, "name", name, true);

        requestDoc.appendChild(action);

        HttpClient client = new HttpClientImpl(url, locale);

        try {
            InputStream in = client.collectionOut(requestDoc, uuid, "export");
            Reader reader       = new InputStreamReader (in, "UTF-8");
            CSVReader csvReader = new CSVReader (reader);

            List<String[]> lines = new ArrayList<String[]>();
            String[]       line  = null;

            while ((line = csvReader.readNext()) != null) {
                if (line != null) {
                    if (!line[0].startsWith("#") && line.length > 0) {
                        if (line[0].replace("'", "").length() > 0) {
                            lines.add(line);
                        }
                    }
                }
            }

            return lines;
        }
        catch (IOException ce) {
            logger.error(ce.getLocalizedMessage());
        }

        throw new ServerException(ERROR_NO_EXPORT_FOUND);
    }
}
// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :

http://dive4elements.wald.intevation.org