diff 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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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifact-database/src/main/java/de/intevation/artifactdatabase/rest/ArtifactOutResource.java	Thu Sep 10 15:49:17 2009 +0000
@@ -0,0 +1,100 @@
+package de.intevation.artifactdatabase.rest;
+
+import org.apache.log4j.Logger;
+
+import org.restlet.resource.Get;  
+import org.restlet.resource.ServerResource;
+
+import org.restlet.data.Request;
+import org.restlet.data.Response;
+import org.restlet.data.Status;
+import org.restlet.data.MediaType;
+
+import org.restlet.representation.Representation;
+import org.restlet.representation.EmptyRepresentation;
+
+import org.restlet.ext.xml.DomRepresentation;
+
+import de.intevation.artifactdatabase.XMLUtils;
+
+import de.intevation.artifacts.ArtifactNamespaceContext;
+import de.intevation.artifacts.ArtifactDatabase;
+import de.intevation.artifacts.Artifact;
+
+import org.w3c.dom.Document;
+
+import java.io.IOException;
+
+/**
+ * @author Sascha L. Teichmann (sascha.teichmann@intevation)
+ */
+public class ArtifactOutResource
+extends      ServerResource
+{
+    public static final String PATH = "/artifact/{uuid}/{type}";
+
+    public static final String XPATH_MIME_TYPE = "/action/out/mime-type/@value";
+
+    public static final MediaType DEFAULT_MIME_TYPE =
+        MediaType.APPLICATION_OCTET_STREAM;
+
+    private static Logger logger = Logger.getLogger(ArtifactOutResource.class);
+
+    @Get
+    public Representation represent() {
+
+        Request request = getRequest();
+
+        Representation requestRepr = request.getEntity();
+
+        Document inputDocument = null;
+        try {
+            DomRepresentation input = new DomRepresentation(requestRepr);
+            inputDocument = input.getDocument();
+        }
+        catch (IOException ioe) {
+            logger.error(ioe.getMessage());
+            Response response = getResponse();
+            response.setStatus(Status.CLIENT_ERROR_BAD_REQUEST, ioe);
+            return new EmptyRepresentation();
+        }
+
+        ArtifactDatabase db = (ArtifactDatabase)getContext()
+            .getAttributes().get("database");
+
+        String identifier = (String)request.getAttributes().get("uuid");
+
+        if (logger.isDebugEnabled()) {
+            logger.debug("looking for artifact id '" + identifier + "'");
+        }
+
+        Artifact artifact = db.getArtifact(identifier);
+
+        if (artifact == null) {
+            Response response = getResponse();
+            response.setStatus(
+                Status.CLIENT_ERROR_NOT_FOUND, ArtifactResource.NO_ARTIFACT_FOUND);
+            return new EmptyRepresentation();
+        }
+
+        String mimeTypeString = XMLUtils.xpathString(
+            inputDocument,
+            XPATH_MIME_TYPE,
+            ArtifactNamespaceContext.INSTANCE);
+
+        MediaType mimeType = DEFAULT_MIME_TYPE;
+
+        if (mimeTypeString != null && mimeTypeString.length() != 0) {
+            try {
+                mimeType = MediaType.valueOf(mimeTypeString);
+            }
+            catch (Exception e) {
+                logger.error(e.getLocalizedMessage());
+            }
+        }
+
+        return new OutRepresentation(
+            mimeType, artifact, inputDocument, db.getArtifactContext());
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:

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