ingo@32: package de.intevation.flys.client.server;
ingo@32: 
ingo@32: import org.w3c.dom.Document;
ingo@32: 
ingo@32: import com.google.gwt.user.server.rpc.RemoteServiceServlet;
ingo@32: 
ingo@32: import de.intevation.artifacts.common.ArtifactNamespaceContext;
ingo@32: import de.intevation.artifacts.common.utils.ClientProtocolUtils;
ingo@32: import de.intevation.artifacts.common.utils.XMLUtils;
ingo@32: 
ingo@32: import de.intevation.artifacts.httpclient.exceptions.ConnectionException;
ingo@32: import de.intevation.artifacts.httpclient.http.HttpClient;
ingo@32: import de.intevation.artifacts.httpclient.http.HttpClientImpl;
ingo@32: import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler;
ingo@32: 
ingo@32: import de.intevation.flys.client.shared.model.Artifact;
ingo@32: import de.intevation.flys.client.client.services.AdvanceService;
ingo@32: 
ingo@32: 
ingo@32: /**
ingo@32:  * This interface provides artifact specific operation ADVANCE.
ingo@32:  *
ingo@32:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@32:  */
ingo@32: public class AdvanceServiceImpl
ingo@32: extends      RemoteServiceServlet
ingo@32: implements   AdvanceService
ingo@32: {
ingo@32:     public static final String XPATH_RESULT = "/art:result/text()";
ingo@32: 
ingo@32:     public static final String OPERATION_FAILURE = "FAILED";
ingo@32: 
ingo@32: 
ingo@32:     public Artifact advance(String serverUrl, Artifact artifact, String target){
ingo@32:         Document advance = ClientProtocolUtils.newAdvanceDocument(
ingo@32:             artifact.getUuid(),
ingo@32:             artifact.getHash(),
ingo@32:             target);
ingo@32: 
ingo@32:         HttpClient client = new HttpClientImpl(serverUrl);
ingo@32: 
ingo@32:         try {
ingo@32:             Document description = (Document) client.advance(
ingo@32:                 new de.intevation.artifacts.httpclient.objects.Artifact(
ingo@32:                     artifact.getUuid(),
ingo@32:                     artifact.getHash()),
ingo@32:                 advance,
ingo@32:                 new DocumentResponseHandler());
ingo@32: 
ingo@32:             if (description == null) {
ingo@32:                 return null;
ingo@32:             }
ingo@32: 
ingo@32:             String result = XMLUtils.xpathString(
ingo@32:                 description,
ingo@32:                 XPATH_RESULT,
ingo@32:                 ArtifactNamespaceContext.INSTANCE);
ingo@32: 
ingo@32:             if (result == null || !result.equals(OPERATION_FAILURE)) {
ingo@32:                 return (Artifact) new FLYSArtifactCreator().create(description);
ingo@32:             }
ingo@32:         }
ingo@32:         catch (ConnectionException ce) {
ingo@32:             System.err.println(ce.getLocalizedMessage());
ingo@32:         }
ingo@32: 
ingo@32:         return null;
ingo@32:     }
ingo@32: }
ingo@32: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :