Author: mir
Date: Tue Jun 29 16:27:03 2010
New Revision: 959021
URL: http://svn.apache.org/viewvc?rev=959021&view=rev
Log:
CLEREZZA-248: added missing changes
Modified:
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.platform.content.representations/org.apache.clerezza.platform.content.representations.core/src/main/java/org/apache/clerezza/platform/content/representations/core/AlternativeRepresentationGenerator.java
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.platform.content.representations/org.apache.clerezza.platform.content.representations.core/src/main/java/org/apache/clerezza/platform/content/representations/core/ThumbnailService.java
Modified:
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.platform.content.representations/org.apache.clerezza.platform.content.representations.core/src/main/java/org/apache/clerezza/platform/content/representations/core/AlternativeRepresentationGenerator.java
URL:
http://svn.apache.org/viewvc/incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.platform.content.representations/org.apache.clerezza.platform.content.representations.core/src/main/java/org/apache/clerezza/platform/content/representations/core/AlternativeRepresentationGenerator.java?rev=959021&r1=959020&r2=959021&view=diff
==============================================================================
---
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.platform.content.representations/org.apache.clerezza.platform.content.representations.core/src/main/java/org/apache/clerezza/platform/content/representations/core/AlternativeRepresentationGenerator.java
(original)
+++
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.platform.content.representations/org.apache.clerezza.platform.content.representations.core/src/main/java/org/apache/clerezza/platform/content/representations/core/AlternativeRepresentationGenerator.java
Tue Jun 29 16:27:03 2010
@@ -25,6 +25,7 @@ import java.io.IOException;
import javax.imageio.ImageIO;
import javax.ws.rs.core.MediaType;
import org.apache.clerezza.platform.content.DiscobitsHandler;
+import org.apache.clerezza.platform.content.InfoDiscobit;
import org.apache.felix.scr.annotations.Component;
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
@@ -34,6 +35,7 @@ import org.apache.clerezza.utils.imagepr
import org.apache.clerezza.rdf.ontologies.DISCOBITS;
import org.apache.clerezza.rdf.utils.GraphNode;
import org.apache.clerezza.rdf.metadata.MetaDataGenerator;
+import org.apache.felix.scr.annotations.Services;
import org.osgi.service.component.ComponentContext;
import org.osgi.util.tracker.ServiceTracker;
@@ -47,7 +49,11 @@ import org.osgi.util.tracker.ServiceTrac
* @author mir
*/
@Component(metatype=true)
-...@service(MetaDataGenerator.class)
+...@services({
+ @Service(MetaDataGenerator.class),
+ @Service(AlternativeRepresentationGenerator.class)
+})
+
public class AlternativeRepresentationGenerator implements MetaDataGenerator {
private static class Resolution {
@@ -67,6 +73,17 @@ public class AlternativeRepresentationGe
height = new Integer(widthAndHeight[1]);
}
+ /**
+ * A Resolution with the specified width and height.
+ *
+ * @param width
+ * @param height
+ */
+ public Resolution(int width, int height) {
+ this.width = width;
+ this.height = height;
+ }
+
public int getHeight() {
return height;
}
@@ -130,31 +147,52 @@ public class AlternativeRepresentationGe
return;
}
if (mediaType.getType().startsWith("image")) {
- try {
- isAltRepresentation.set(Boolean.TRUE);
- BufferedImage buffImage = ImageIO.read(new
ByteArrayInputStream(data));
- int imgWidth = buffImage.getWidth();
- int imgHeigth = buffImage.getHeight();
- for (Resolution resolution : resolutions) {
- if (imgWidth > resolution.getWidth() ||
- imgHeigth >
resolution.getHeight()){
- BufferedImage alternativeImage
= imageProcessor.makeAThumbnail(
- buffImage,
resolution.getWidth(), resolution.getHeight());
- byte[] alternativeImageBytes =
bufferedImage2ByteArray(alternativeImage, mediaType);
- DiscobitsHandler contentHandler
= (DiscobitsHandler)discobitTracker.getService();
- UriRef thumbnailUri =
createThumbnailUri((UriRef) node.getNode(), alternativeImage);
-
contentHandler.put(thumbnailUri, mediaType, alternativeImageBytes);
-
node.addProperty(DISCOBITS.thumbnail, thumbnailUri);
- }
+ generateAlternativeImages(data, mediaType, node);
+ }
+ }
+
+ public UriRef generateAlternativeImage(GraphNode infoBitNode, int
width, int height) {
+ try {
+ isAltRepresentation.set(Boolean.TRUE);
+ InfoDiscobit infoBit = new InfoDiscobit(infoBitNode);
+ BufferedImage buffImage = ImageIO.read(new
ByteArrayInputStream(infoBit.getData()));
+ return generateAlternativeImage(buffImage, new
Resolution(width, height),
+
MediaType.valueOf(infoBit.getContentType()), infoBitNode);
+ } catch (IOException ex) {
+ throw new RuntimeException(ex);
+ } finally {
+ isAltRepresentation.set(Boolean.FALSE);
+ }
+ }
+
+ private void generateAlternativeImages(byte[] data, MediaType
mediaType, GraphNode node) throws RuntimeException {
+ try {
+ isAltRepresentation.set(Boolean.TRUE);
+ BufferedImage buffImage = ImageIO.read(new
ByteArrayInputStream(data));
+ int imgWidth = buffImage.getWidth();
+ int imgHeigth = buffImage.getHeight();
+ for (Resolution resolution : resolutions) {
+ if (imgWidth > resolution.getWidth() ||
imgHeigth > resolution.getHeight()) {
+ generateAlternativeImage( buffImage,
resolution, mediaType, node);
}
- } catch (IOException ex) {
- throw new RuntimeException(ex);
- } finally {
- isAltRepresentation.set(Boolean.FALSE);
}
+ } catch (IOException ex) {
+ throw new RuntimeException(ex);
+ } finally {
+ isAltRepresentation.set(Boolean.FALSE);
}
}
+ private UriRef generateAlternativeImage(BufferedImage buffImage,
Resolution resolution, MediaType mediaType, GraphNode node) throws IOException {
+ BufferedImage alternativeImage =
imageProcessor.makeAThumbnail(buffImage, resolution.getWidth(),
resolution.getHeight());
+ byte[] alternativeImageBytes =
bufferedImage2ByteArray(alternativeImage, mediaType);
+ DiscobitsHandler contentHandler = (DiscobitsHandler)
discobitTracker.getService();
+ UriRef thumbnailUri = createThumbnailUri((UriRef)
node.getNode(), alternativeImage);
+ contentHandler.put(thumbnailUri, mediaType,
alternativeImageBytes);
+ node.addProperty(DISCOBITS.thumbnail, thumbnailUri);
+ return thumbnailUri;
+ }
+
private byte[] bufferedImage2ByteArray(BufferedImage image,
MediaType mediaType) throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
Modified:
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.platform.content.representations/org.apache.clerezza.platform.content.representations.core/src/main/java/org/apache/clerezza/platform/content/representations/core/ThumbnailService.java
URL:
http://svn.apache.org/viewvc/incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.platform.content.representations/org.apache.clerezza.platform.content.representations.core/src/main/java/org/apache/clerezza/platform/content/representations/core/ThumbnailService.java?rev=959021&r1=959020&r2=959021&view=diff
==============================================================================
---
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.platform.content.representations/org.apache.clerezza.platform.content.representations.core/src/main/java/org/apache/clerezza/platform/content/representations/core/ThumbnailService.java
(original)
+++
incubator/clerezza/trunk/org.apache.clerezza.parent/org.apache.clerezza.platform.content.representations/org.apache.clerezza.platform.content.representations.core/src/main/java/org/apache/clerezza/platform/content/representations/core/ThumbnailService.java
Tue Jun 29 16:27:03 2010
@@ -72,10 +72,13 @@ public class ThumbnailService implements
ContentGraphProvider cgProvider;
@Reference
PlatformConfig config;
+ @Reference
+ AlternativeRepresentationGenerator altRepGen;
+
private static final Logger log =
LoggerFactory.getLogger(ThumbnailService.class);
private BundleContext bundleContext;
private String STATICWEB_PATH =
"/org/apache/clerezza/web/resources/style/staticweb/";
- private String BASE_PATH = STATICWEB_PATH + "images/icons/mediatype/";
+ private String MEDIA_TYPE_BASE_PATH = STATICWEB_PATH +
"images/icons/mediatype/";
private Bundle cachedStyleBundle = null;
private Map<MediaType, String> mediaTypeIconUriCache =
Collections.synchronizedMap(new HashMap<MediaType,
String>());
@@ -97,9 +100,11 @@ public class ThumbnailService implements
* maximum width and height can optionally be specified over the query
parameters
* "width" and "height". If more than one acceptable thumbnail is
available
* then the thumbnail uri of the thumbnail with the highest resolution
- * (width * height) is returned. If no thumbnail is available then the
uri of
- * the icon representing the media type is returned. If also no media
type
- * icon is available the uri to default icon is returned.
+ * (width * height) is returned. If no thumbnail is available and the
logged
+ * in user has the write permission for the content graph, then an
attempt is
+ * made to create the thumbnail on the fly. If this fails or the write
permission
+ * is missing, then the uri of the icon representing the media type is
returned.
+ * If also no media type icon is available the uri to default icon is
returned.
* @param infoBitUri the uri of the infoDiscoBit of which the thumbnail
uri should be returned
* @param height the maximum height that the thumbnail has
* @param width the maximum width that the thumbnail has
@@ -107,9 +112,8 @@ public class ThumbnailService implements
*/
@GET
public Response getThumbnailUri(@QueryParam("uri") UriRef infoBitUri,
- @QueryParam("width") Integer width,
- @QueryParam("height") Integer height,
- @Context UriInfo uriInfo) {
+ @QueryParam("width") Integer width,
@QueryParam("height") Integer height,
+ @Context UriInfo uriInfo) {
if ((width == null) && (height == null)) {
throw new WebApplicationException(new
IllegalArgumentException("height and/or width must be specified"),
Response.Status.BAD_REQUEST);
@@ -126,10 +130,23 @@ public class ThumbnailService implements
return Response.seeOther(
URI.create((thumbnailUri).getUnicodeString())).build();
}
+
+
Iterator<Resource> mediaTypes =
infoBitNode.getObjects(DISCOBITS.mediaType);
if (mediaTypes.hasNext()) {
MediaType mediaType =
MediaType.valueOf(LiteralFactory.getInstance().createObject(
String.class, (TypedLiteral)
mediaTypes.next()));
+ // if the infoBit is an image, create a thumbnail on
the fly.
+ if (mediaType.getType().startsWith("image")) {
+ try {
+ thumbnailUri =
altRepGen.generateAlternativeImage(infoBitNode, width,
+ height);
+ return
RedirectUtil.createSeeOtherResponse(thumbnailUri.getUnicodeString(), uriInfo);
+ } catch (Exception ex) {
+ // Was worth a try. eLets go on
+ }
+ }
+
String iconUri = mediaTypeIconUriCache.get(mediaType);
if (iconUri == null) {
iconUri = getMediaTypeIconUri(mediaType);
@@ -146,7 +163,7 @@ public class ThumbnailService implements
if (styleBundle == null) {
throw new RuntimeException("no style bundle found");
}
- String path = BASE_PATH + mediaType.getType() + "/";
+ String path = MEDIA_TYPE_BASE_PATH + mediaType.getType() + "/";
Enumeration entries = styleBundle.findEntries(path,
mediaType.getSubtype() + ".*", false);
String iconUri = createIconUri(entries);
@@ -162,7 +179,7 @@ public class ThumbnailService implements
}
private String getDefaultIconUrl(Bundle bundle) {
- Enumeration entries = bundle.findEntries(BASE_PATH, "any.*",
false);
+ Enumeration entries = bundle.findEntries(MEDIA_TYPE_BASE_PATH,
"any.*", false);
String iconUri = createIconUri(entries);
if (iconUri != null) {
return iconUri;
