Fix thumbnail issues

The issue is partly fixed by the following commits, which are already part of the v6.2 release:
IQSS#10269
IQSS#10258

Had to add "dataset.setUseGenericThumbnail(false);" line in the DatasetServiceBean to make it work.

Author: fintanorbert

src/main/java/edu/harvard/iq/dataverse/DatasetServiceBean.java

@@ -849,6 +849,7 @@ public Dataset setNonDatasetFileAsThumbnail(Dataset dataset, InputStream inputSt
         }
         dataset = DatasetUtil.persistDatasetLogoToStorageAndCreateThumbnails(dataset, inputStream);
         dataset.setThumbnailFile(null);
+        dataset.setUseGenericThumbnail(false);
         return merge(dataset);
     }
 

src/main/java/edu/harvard/iq/dataverse/ThumbnailServiceWrapper.java

@@ -13,6 +13,10 @@
 import java.util.HashMap;
 import java.util.Map;
 import java.util.logging.Logger;
+import edu.harvard.iq.dataverse.dataaccess.DataAccess;
+import edu.harvard.iq.dataverse.dataaccess.StorageIO;
+import edu.harvard.iq.dataverse.dataset.DatasetUtil;
+import java.io.IOException;
 
 import jakarta.ejb.EJB;
 import jakarta.enterprise.context.RequestScoped;
@@ -170,13 +174,25 @@ public String getDatasetCardImageAsUrl(Dataset dataset, Long versionId, boolean
 
         if (thumbnailFile == null) {
 
-            // We attempt to auto-select via the optimized, native query-based method
+            boolean hasDatasetLogo = false;
+            StorageIO<DvObject> storageIO = null;
+            try {
+                storageIO = DataAccess.getStorageIO(dataset);
+                if (storageIO.isAuxObjectCached(DatasetUtil.datasetLogoFilenameFinal)) {
+                    // If not, return null/use the default, otherwise pass the logo URL
+                    hasDatasetLogo = true;
+                }
+            } catch (IOException ioex) {
+                logger.warning("getDatasetCardImageAsUrl(): Failed to initialize dataset StorageIO for "
+                        + dataset.getStorageIdentifier() + " (" + ioex.getMessage() + ")");
+            }
+            // If no other logo we attempt to auto-select via the optimized, native
+            // query-based method
             // from the DatasetVersionService:
-            if (datasetVersionService.getThumbnailByVersionId(versionId) == null) {
+            if (!hasDatasetLogo && datasetVersionService.getThumbnailByVersionId(versionId) == null) {
                 return null;
             }
         }
-
         String url = SystemConfig.getDataverseSiteUrlStatic() + "/api/datasets/" + dataset.getId() + "/logo";
         logger.fine("getDatasetCardImageAsUrl: " + url);
         this.dvobjectThumbnailsMap.put(datasetId,url);

src/main/java/edu/harvard/iq/dataverse/dataset/DatasetUtil.java

@@ -464,7 +464,7 @@ public static InputStream getLogoAsInputStream(Dataset dataset) {
 
             try {
                 in = ImageThumbConverter.getImageThumbnailAsInputStream(thumbnailFile.getStorageIO(),
-                        ImageThumbConverter.DEFAULT_CARDIMAGE_SIZE).getInputStream();
+                        ImageThumbConverter.DEFAULT_DATASETLOGO_SIZE).getInputStream();
             } catch (IOException ioex) {
                 logger.warning("getLogo(): Failed to get logo from DataFile for " + dataset.getStorageIdentifier()
                         + " (" + ioex.getMessage() + ")");

src/main/webapp/resources/css/structure.css

@@ -484,7 +484,7 @@ span.search-term-match {font-weight: bold;}
 [id$='resultsTable'] div.card-title-icon-block span.label {vertical-align:15%}
 [id$='resultsTable'] div.card-preview-icon-block {width:48px; float:left; margin:4px 12px 6px 0;}
 [id$='resultsTable'] div.card-preview-icon-block a {display:block; height:48px; line-height:48px;}
-[id$='resultsTable'] div.card-preview-icon-block img {vertical-align:middle;}
+[id$='resultsTable'] div.card-preview-icon-block img {vertical-align:middle; max-width: 64px; max-height: 48px; padding-right: 10px;}
 [id$='resultsTable'] div.card-preview-icon-block span[class^='icon'],
 [id$='resultsTable'] div.card-preview-icon-block span[class^='glyphicon'] {font-size:2.8em;}