changeset 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 019b9f02d523
children 88972c6daa4f
files Changelog artifact-database/src/main/java/de/intevation/artifactdatabase/rest/ArtifactOutResource.java artifact-database/src/main/java/de/intevation/artifactdatabase/rest/ArtifactResource.java artifact-database/src/main/java/de/intevation/artifactdatabase/rest/OutRepresentation.java artifact-database/src/main/java/de/intevation/artifactdatabase/rest/RestApp.java
diffstat 5 files changed, 160 insertions(+), 6 deletions(-) [+]
line wrap: on
line diff
--- a/Changelog	Thu Sep 10 14:44:25 2009 +0000
+++ b/Changelog	Thu Sep 10 15:49:17 2009 +0000
@@ -1,3 +1,17 @@
+2009-09-10	Sascha L. Teichmann	<sascha.teichmann@intevation.de>
+
+	* artifact-database/src/main/java/de/intevation/artifactdatabase/rest/ArtifactOutResource.java:
+	New. Handler for 'out'. Reachable via HTTP GET '/artifact/{uuid}/{type}'.
+
+	* artifact-database/src/main/java/de/intevation/artifactdatabase/rest/OutRepresentation.java:
+	New. Special representation for out. TODO: use streaming API.
+
+	* artifact-database/src/main/java/de/intevation/artifactdatabase/rest/ArtifactResource.java:
+	Regrouped imports.
+
+	* artifact-database/src/main/java/de/intevation/artifactdatabase/rest/RestApp.java: Added
+	handler for 'out' to routing table.
+
 2009-09-10	Sascha L. Teichmann	<sascha.teichmann@intevation.de>
 
 	* artifact-database/src/main/java/de/intevation/artifactdatabase/rest/ArtifactResource.java:
--- /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:
--- a/artifact-database/src/main/java/de/intevation/artifactdatabase/rest/ArtifactResource.java	Thu Sep 10 14:44:25 2009 +0000
+++ b/artifact-database/src/main/java/de/intevation/artifactdatabase/rest/ArtifactResource.java	Thu Sep 10 15:49:17 2009 +0000
@@ -11,11 +11,11 @@
 
 import de.intevation.artifacts.ArtifactDatabase;
 import de.intevation.artifacts.Artifact;
+import de.intevation.artifacts.ArtifactNamespaceContext;
 
 import org.restlet.data.Request;
 import org.restlet.data.Response;
 import org.restlet.data.Status;
-
 import org.restlet.data.MediaType;
 
 import org.apache.log4j.Logger;
@@ -24,8 +24,6 @@
 
 import java.io.IOException;
 
-import de.intevation.artifacts.ArtifactNamespaceContext;
-
 import de.intevation.artifactdatabase.XMLUtils;
 
 /**
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifact-database/src/main/java/de/intevation/artifactdatabase/rest/OutRepresentation.java	Thu Sep 10 15:49:17 2009 +0000
@@ -0,0 +1,41 @@
+package de.intevation.artifactdatabase.rest;
+
+import org.restlet.representation.OutputRepresentation;
+
+import de.intevation.artifacts.Artifact;
+
+import org.restlet.data.MediaType;
+
+import java.io.OutputStream;
+import java.io.IOException;
+
+import org.w3c.dom.Document;
+
+/**
+ * @author Sascha L. Teichmann (sascha.teichmann@intevation)
+ */
+public class OutRepresentation
+extends      OutputRepresentation
+{
+    protected Artifact artifact;
+    protected Document document;
+    protected Object   context;
+
+    public OutRepresentation(
+        MediaType mediaType, 
+        Artifact  artifact, 
+        Document  document,
+        Object    context
+    ) {
+        super(mediaType);
+        this.artifact = artifact;
+        this.document = document;
+        this.context  = context;
+    }
+
+    public void write(OutputStream outputStream) throws IOException {
+        byte [] bytes = artifact.out(document, context);
+        outputStream.write(bytes);
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8:
--- a/artifact-database/src/main/java/de/intevation/artifactdatabase/rest/RestApp.java	Thu Sep 10 14:44:25 2009 +0000
+++ b/artifact-database/src/main/java/de/intevation/artifactdatabase/rest/RestApp.java	Thu Sep 10 15:49:17 2009 +0000
@@ -35,9 +35,10 @@
 
         Router router = new Router(context);
 
-        router.attach(FactoriesResource.PATH, FactoriesResource.class);
-        router.attach(CreateResource.PATH,    CreateResource.class);
-        router.attach(ArtifactResource.PATH,  ArtifactResource.class);
+        router.attach(FactoriesResource.PATH,   FactoriesResource.class);
+        router.attach(CreateResource.PATH,      CreateResource.class);
+        router.attach(ArtifactResource.PATH,    ArtifactResource.class);
+        router.attach(ArtifactOutResource.PATH, ArtifactOutResource.class);
 
         return router;
     }

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