Mercurial > dive4elements > river
comparison flys-client/src/main/java/de/intevation/flys/client/server/GetArtifactServiceImpl.java @ 221:f03c34bec364
Added a new service to query an artifact description.
flys-client/trunk@1666 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Tue, 12 Apr 2011 07:56:33 +0000 |
| parents | |
| children | 924da6695800 |
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| 220:35094660f91a | 221:f03c34bec364 |
|---|---|
| 1 package de.intevation.flys.client.server; | |
| 2 | |
| 3 import org.w3c.dom.Document; | |
| 4 | |
| 5 import com.google.gwt.user.server.rpc.RemoteServiceServlet; | |
| 6 | |
| 7 import de.intevation.artifacts.common.ArtifactNamespaceContext; | |
| 8 import de.intevation.artifacts.common.utils.ClientProtocolUtils; | |
| 9 import de.intevation.artifacts.common.utils.XMLUtils; | |
| 10 | |
| 11 import de.intevation.artifacts.httpclient.exceptions.ConnectionException; | |
| 12 import de.intevation.artifacts.httpclient.http.HttpClient; | |
| 13 import de.intevation.artifacts.httpclient.http.HttpClientImpl; | |
| 14 import de.intevation.artifacts.httpclient.http.response.DocumentResponseHandler; | |
| 15 | |
| 16 import de.intevation.flys.client.shared.exceptions.ServerException; | |
| 17 import de.intevation.flys.client.shared.model.Artifact; | |
| 18 import de.intevation.flys.client.client.services.GetArtifactService; | |
| 19 | |
| 20 | |
| 21 /** | |
| 22 * This service provides a method that returns an artifact based on its | |
| 23 * identifier. | |
| 24 * | |
| 25 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> | |
| 26 */ | |
| 27 public class GetArtifactServiceImpl | |
| 28 extends RemoteServiceServlet | |
| 29 implements GetArtifactService | |
| 30 { | |
| 31 public static final String ERROR_DESCRIBE_ARTIFACT = | |
| 32 "error_describe_artifact"; | |
| 33 | |
| 34 public static final String XPATH_RESULT = "/art:result/text()"; | |
| 35 | |
| 36 public static final String OPERATION_FAILURE = "FAILED"; | |
| 37 | |
| 38 | |
| 39 public Artifact getArtifact(String serverUrl, String uuid, String hash) | |
| 40 throws ServerException | |
| 41 { | |
| 42 Document describe = ClientProtocolUtils.newDescribeDocument( | |
| 43 uuid, hash, true); | |
| 44 | |
| 45 HttpClient client = new HttpClientImpl(serverUrl); | |
| 46 | |
| 47 try { | |
| 48 Document description = (Document) client.describe( | |
| 49 new de.intevation.artifacts.httpclient.objects.Artifact( | |
| 50 uuid, hash), | |
| 51 describe, | |
| 52 new DocumentResponseHandler()); | |
| 53 | |
| 54 if (description == null) { | |
| 55 throw new ServerException(ERROR_DESCRIBE_ARTIFACT); | |
| 56 } | |
| 57 | |
| 58 String result = XMLUtils.xpathString( | |
| 59 description, | |
| 60 XPATH_RESULT, | |
| 61 ArtifactNamespaceContext.INSTANCE); | |
| 62 | |
| 63 if (result == null || !result.equals(OPERATION_FAILURE)) { | |
| 64 return (Artifact) new FLYSArtifactCreator().create(description); | |
| 65 } | |
| 66 } | |
| 67 catch (ConnectionException ce) { | |
| 68 System.err.println(ce.getLocalizedMessage()); | |
| 69 } | |
| 70 | |
| 71 throw new ServerException(ERROR_DESCRIBE_ARTIFACT); | |
| 72 } | |
| 73 } | |
| 74 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 : |