view flys-client/src/main/java/de/intevation/flys/client/server/DoCollectionAction.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 ab8eb2f544f2
children
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package de.intevation.flys.client.server;

import org.w3c.dom.Document;

import org.apache.log4j.Logger;

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

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

import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
import de.intevation.artifacts.httpclient.http.HttpClient;
import de.intevation.artifacts.httpclient.http.HttpClientImpl;
import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler;

import de.intevation.flys.client.shared.exceptions.ServerException;
import de.intevation.flys.client.shared.model.Collection;


/**
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class DoCollectionAction extends RemoteServiceServlet {

    private static final Logger logger =
        Logger.getLogger(DoCollectionAction.class);


    public static final String XPATH_RESULT      = "/art:result/text()";
    public static final String OPERATION_FAILURE = "FAILED";
    public static final String FAILURE_EXCEPTION = "collection_action_failed";


    protected void doAction(Collection c, Document action, String url)
    throws    ServerException
    {
        logger.info("DoCollectionAction.doAction");

        HttpClient client = new HttpClientImpl(url);

        try {
            Document res  = (Document) client.doCollectionAction(
                action, c.identifier(),
                new DocumentResponseHandler());

            String result = XMLUtils.xpathString(
                res,
                XPATH_RESULT,
                ArtifactNamespaceContext.INSTANCE);

            if (result == null || result.equals(OPERATION_FAILURE)) {
                logger.error("Operation failed.");
                throw new ServerException(FAILURE_EXCEPTION);
            }
        }
        catch (ConnectionException ce) {
            logger.error(ce, ce);
            throw new ServerException(FAILURE_EXCEPTION);
        }
    }
}

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