Mercurial > dive4elements > framework
comparison artifact-database/src/main/java/de/intevation/artifactdatabase/rest/ArtifactOutResource.java @ 29:22b03d5c84c5
Added REST out handler for artifacts reachable via HTTP GET '/artifact/{uuid}/{type}'.
artifacts/trunk@69 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
|---|---|
| date | Thu, 10 Sep 2009 15:49:17 +0000 |
| parents | |
| children | c2d53bd30ab8 |
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| 28:019b9f02d523 | 29:22b03d5c84c5 |
|---|---|
| 1 package de.intevation.artifactdatabase.rest; | |
| 2 | |
| 3 import org.apache.log4j.Logger; | |
| 4 | |
| 5 import org.restlet.resource.Get; | |
| 6 import org.restlet.resource.ServerResource; | |
| 7 | |
| 8 import org.restlet.data.Request; | |
| 9 import org.restlet.data.Response; | |
| 10 import org.restlet.data.Status; | |
| 11 import org.restlet.data.MediaType; | |
| 12 | |
| 13 import org.restlet.representation.Representation; | |
| 14 import org.restlet.representation.EmptyRepresentation; | |
| 15 | |
| 16 import org.restlet.ext.xml.DomRepresentation; | |
| 17 | |
| 18 import de.intevation.artifactdatabase.XMLUtils; | |
| 19 | |
| 20 import de.intevation.artifacts.ArtifactNamespaceContext; | |
| 21 import de.intevation.artifacts.ArtifactDatabase; | |
| 22 import de.intevation.artifacts.Artifact; | |
| 23 | |
| 24 import org.w3c.dom.Document; | |
| 25 | |
| 26 import java.io.IOException; | |
| 27 | |
| 28 /** | |
| 29 * @author Sascha L. Teichmann (sascha.teichmann@intevation) | |
| 30 */ | |
| 31 public class ArtifactOutResource | |
| 32 extends ServerResource | |
| 33 { | |
| 34 public static final String PATH = "/artifact/{uuid}/{type}"; | |
| 35 | |
| 36 public static final String XPATH_MIME_TYPE = "/action/out/mime-type/@value"; | |
| 37 | |
| 38 public static final MediaType DEFAULT_MIME_TYPE = | |
| 39 MediaType.APPLICATION_OCTET_STREAM; | |
| 40 | |
| 41 private static Logger logger = Logger.getLogger(ArtifactOutResource.class); | |
| 42 | |
| 43 @Get | |
| 44 public Representation represent() { | |
| 45 | |
| 46 Request request = getRequest(); | |
| 47 | |
| 48 Representation requestRepr = request.getEntity(); | |
| 49 | |
| 50 Document inputDocument = null; | |
| 51 try { | |
| 52 DomRepresentation input = new DomRepresentation(requestRepr); | |
| 53 inputDocument = input.getDocument(); | |
| 54 } | |
| 55 catch (IOException ioe) { | |
| 56 logger.error(ioe.getMessage()); | |
| 57 Response response = getResponse(); | |
| 58 response.setStatus(Status.CLIENT_ERROR_BAD_REQUEST, ioe); | |
| 59 return new EmptyRepresentation(); | |
| 60 } | |
| 61 | |
| 62 ArtifactDatabase db = (ArtifactDatabase)getContext() | |
| 63 .getAttributes().get("database"); | |
| 64 | |
| 65 String identifier = (String)request.getAttributes().get("uuid"); | |
| 66 | |
| 67 if (logger.isDebugEnabled()) { | |
| 68 logger.debug("looking for artifact id '" + identifier + "'"); | |
| 69 } | |
| 70 | |
| 71 Artifact artifact = db.getArtifact(identifier); | |
| 72 | |
| 73 if (artifact == null) { | |
| 74 Response response = getResponse(); | |
| 75 response.setStatus( | |
| 76 Status.CLIENT_ERROR_NOT_FOUND, ArtifactResource.NO_ARTIFACT_FOUND); | |
| 77 return new EmptyRepresentation(); | |
| 78 } | |
| 79 | |
| 80 String mimeTypeString = XMLUtils.xpathString( | |
| 81 inputDocument, | |
| 82 XPATH_MIME_TYPE, | |
| 83 ArtifactNamespaceContext.INSTANCE); | |
| 84 | |
| 85 MediaType mimeType = DEFAULT_MIME_TYPE; | |
| 86 | |
| 87 if (mimeTypeString != null && mimeTypeString.length() != 0) { | |
| 88 try { | |
| 89 mimeType = MediaType.valueOf(mimeTypeString); | |
| 90 } | |
| 91 catch (Exception e) { | |
| 92 logger.error(e.getLocalizedMessage()); | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 return new OutRepresentation( | |
| 97 mimeType, artifact, inputDocument, db.getArtifactContext()); | |
| 98 } | |
| 99 } | |
| 100 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8: |