Call getUniquePath in constructor

Core/src/org/sleuthkit/autopsy/datamodel/AbstractAbstractFileNode.java

@@ -95,6 +95,16 @@ public abstract class AbstractAbstractFileNode<T extends AbstractFile> extends A
             }
         }
         
+        try {
+            //See JIRA-5971
+            //Attempt to cache file path during construction of this UI component.
+            this.content.getUniquePath();
+        } catch (TskCoreException ex) {
+            logger.log(Level.SEVERE, String.format("Failed attempt to cache the "
+                            + "unique path of the abstract file instance. Name: %s (objID=%d)", 
+                            this.content.getName(), this.content.getId()), ex);
+        }
+
         if (UserPreferences.displayTranslatedFileNames()) {
             backgroundTasksPool.submit(new TranslationTask(
                     new WeakReference<>(this), weakPcl));

Core/src/org/sleuthkit/autopsy/datamodel/BlackboardArtifactNode.java

@@ -194,6 +194,16 @@ public class BlackboardArtifactNode extends AbstractContentNode<BlackboardArtifa
         for (Content lookupContent : this.getLookup().lookupAll(Content.class)) {
             if ((lookupContent != null) && (!(lookupContent instanceof BlackboardArtifact))) {
                 this.associated = lookupContent;
+                
+                try {
+                    //See JIRA-5971
+                    //Attempt to cache file path during construction of this UI component.
+                    this.associated.getUniquePath();
+                } catch (TskCoreException ex) {
+                    logger.log(Level.SEVERE, String.format("Failed attempt to cache the "
+                            + "unique path of the associated content instance. Name: %s (objID=%d)", 
+                            this.associated.getName(), this.associated.getId()), ex);
+                }
                 break;
             }
         }