Author: mir
Date: Mon Aug 30 16:09:20 2010
New Revision: 990842
URL: http://svn.apache.org/viewvc?rev=990842&view=rev
Log:
CLEREZZA-292: extended the thumbnail service to be usable as OSGi service
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
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=990842&r1=990841&r2=990842&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
Mon Aug 30 16:09:20 2010
@@ -18,7 +18,6 @@
*/
package org.apache.clerezza.platform.content.representations.core;
-import java.net.URI;
import java.net.URL;
import java.util.Collections;
import java.util.Enumeration;
@@ -29,7 +28,6 @@ import java.util.concurrent.locks.Lock;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.QueryParam;
-import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
@@ -49,6 +47,7 @@ import org.apache.felix.scr.annotations.
import org.apache.felix.scr.annotations.Property;
import org.apache.felix.scr.annotations.Reference;
import org.apache.felix.scr.annotations.Service;
+import org.apache.felix.scr.annotations.Services;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.BundleEvent;
@@ -64,10 +63,14 @@ import org.slf4j.LoggerFactory;
* @author mir
*/
@Component
-...@service(Object.class)
+...@services({
+ @Service(Object.class),
+ @Service(ThumbnailService.class)
+})
+
@Property(name = "javax.ws.rs", boolValue = true)
@Path("thumbnail-service")
-public class ThumbnailService implements BundleListener{
+public class ThumbnailService implements BundleListener {
@Reference
ContentGraphProvider cgProvider;
@@ -75,7 +78,6 @@ public class ThumbnailService implements
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/";
@@ -113,11 +115,15 @@ public class ThumbnailService implements
*/
@GET
public Response getThumbnailUri(@QueryParam("uri") UriRef infoBitUri,
- @QueryParam("width") Integer width,
@QueryParam("height") Integer height,
+ @QueryParam("width") Integer width,
@QueryParam("height") Integer height,
@Context UriInfo uriInfo) {
+ return RedirectUtil.createSeeOtherResponse(
+ getThumbnailUri(infoBitUri, width,
height).getUnicodeString(), uriInfo);
+ }
+
+ public UriRef getThumbnailUri(UriRef infoBitUri, Integer width,
Integer height) {
if ((width == null) && (height == null)) {
- throw new WebApplicationException(new
IllegalArgumentException("height and/or width must be specified"),
- Response.Status.BAD_REQUEST);
+ throw new IllegalArgumentException("height and/or width
must be specified");
}
if (width == null) {
width = Integer.MAX_VALUE;
@@ -126,46 +132,46 @@ public class ThumbnailService implements
height = Integer.MAX_VALUE;
}
GraphNode infoBitNode = new GraphNode(infoBitUri,
cgProvider.getContentGraph());
- UriRef thumbnailUri = getThumbnailUri(infoBitNode, width,
height);
- if (thumbnailUri != null) {
- return Response.seeOther(
-
URI.create((thumbnailUri).getUnicodeString())).build();
- }
-
- TypedLiteral mediaTypeLiteral = null;
- Lock readLock = infoBitNode.readLock();
- readLock.lock();
- try {
- Iterator<Resource> mediaTypes =
infoBitNode.getObjects(DISCOBITS.mediaType);
- if (mediaTypes.hasNext()) {
- mediaTypeLiteral = (TypedLiteral)
mediaTypes.next();
+ UriRef thumbnailUri = getGeneratedThumbnailUri(infoBitNode,
width, height);
+ if (thumbnailUri == null) {
+ TypedLiteral mediaTypeLiteral = null;
+ Lock readLock = infoBitNode.readLock();
+ readLock.lock();
+ try {
+ Iterator<Resource> mediaTypes =
infoBitNode.getObjects(DISCOBITS.mediaType);
+ if (mediaTypes.hasNext()) {
+ mediaTypeLiteral = (TypedLiteral)
mediaTypes.next();
+ }
+ } finally {
+ readLock.unlock();
}
- } finally {
- readLock.unlock();
- }
- if (mediaTypeLiteral != null) {
- MediaType mediaType =
MediaType.valueOf(LiteralFactory.getInstance().createObject(
- String.class, mediaTypeLiteral));
- // 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
+ if (mediaTypeLiteral != null) {
+ MediaType mediaType =
MediaType.valueOf(LiteralFactory.getInstance().createObject(
+ String.class,
mediaTypeLiteral));
+ // if the infoBit is an image, create a
thumbnail on the fly.
+ if (mediaType.getType().startsWith("image")) {
+ try {
+ thumbnailUri =
altRepGen.generateAlternativeImage(infoBitNode, width,
+ height);
+ } catch (Exception ex) {
+ // Was worth a try. eLets go on
+ }
+ }
+ if (thumbnailUri == null) {
+ String iconUri =
mediaTypeIconUriCache.get(mediaType);
+ if (iconUri == null) {
+ iconUri =
getMediaTypeIconUri(mediaType);
+
mediaTypeIconUriCache.put(mediaType, iconUri);
+ }
+ thumbnailUri = new UriRef(iconUri);
}
}
+ }
- String iconUri = mediaTypeIconUriCache.get(mediaType);
- if (iconUri == null) {
- iconUri = getMediaTypeIconUri(mediaType);
- mediaTypeIconUriCache.put(mediaType, iconUri);
- }
- return RedirectUtil.createSeeOtherResponse(iconUri,
uriInfo);
+ if (thumbnailUri == null) {
+ thumbnailUri = new
UriRef(getDefaultIconUrl(getStyleBundle()));
}
- return RedirectUtil.createSeeOtherResponse(
- getDefaultIconUrl(getStyleBundle()), uriInfo);
+ return thumbnailUri;
}
private String getMediaTypeIconUri(MediaType mediaType) {
@@ -206,7 +212,7 @@ public class ThumbnailService implements
return null;
}
- private UriRef getThumbnailUri(GraphNode infoBitNode,
+ private UriRef getGeneratedThumbnailUri(GraphNode infoBitNode,
Integer width, Integer height) {
if (isFittingImage(infoBitNode, width, height)) {
return (UriRef) infoBitNode.getNode();
@@ -282,7 +288,7 @@ public class ThumbnailService implements
Bundle[] bundles = bundleContext.getBundles();
for (Bundle bundle : bundles) {
URL staticWebPathURL = bundle.getEntry(STATICWEB_PATH);
- if (staticWebPathURL != null ) {
+ if (staticWebPathURL != null) {
cachedStyleBundle = bundle;
return bundle;
}
@@ -292,8 +298,8 @@ public class ThumbnailService implements
@Override
public synchronized void bundleChanged(BundleEvent be) {
- if (be.getType() == BundleEvent.UNINSTALLED &&
- be.getBundle().equals(cachedStyleBundle)) {
+ if (be.getType() == BundleEvent.UNINSTALLED
+ && be.getBundle().equals(cachedStyleBundle)) {
cachedStyleBundle = null;
cachedStyleBundle = getStyleBundle();
mediaTypeIconUriCache.clear();
