handle cache clears from preference updates

Core/src/org/sleuthkit/autopsy/corecomponents/DataResultPanel.java

@@ -105,6 +105,7 @@ import org.sleuthkit.autopsy.mainui.datamodel.ViewsDAO.DeletedFileFetcher;
 import org.sleuthkit.autopsy.mainui.datamodel.DeletedContentSearchParams;
 import org.sleuthkit.autopsy.mainui.datamodel.ReportsDAO.ReportsFetcher;
 import org.sleuthkit.autopsy.mainui.datamodel.ReportsSearchParams;
+import org.sleuthkit.autopsy.mainui.datamodel.events.CacheClearEvent;
 import org.sleuthkit.autopsy.mainui.nodes.ChildNodeSelectionInfo;
 import org.sleuthkit.autopsy.mainui.nodes.SearchManager;
 
@@ -189,11 +190,20 @@ public class DataResultPanel extends javax.swing.JPanel implements DataResult, C
 
     private final PropertyChangeListener DAOListener = evt -> {
         SearchManager manager = this.searchResultManager;
-        if (manager != null && evt != null && evt.getNewValue() instanceof DAOAggregateEvent) {
+        if (manager != null && evt != null) {
+            if (evt.getNewValue() instanceof DAOAggregateEvent) {
                 DAOAggregateEvent daoAggrEvt = (DAOAggregateEvent) evt.getNewValue();
                 if (daoAggrEvt.getEvents().stream().anyMatch((daoEvt) -> manager.isRefreshRequired(daoEvt))) {
                     refreshSearchResultChildren();
                 }
+            } else if (evt.getNewValue() instanceof CacheClearEvent) {
+                try {
+                    this.searchResultManager = new SearchManager(this.searchResultManager.getDaoFetcher(), getPageSize());
+                    displaySearchResults(this.searchResultManager.getResults(), true);    
+                } catch (ExecutionException ex) {
+                    logger.log(Level.WARNING, "An exception occurred while handling cache clear event.", ex);
+                }
+            }
         }
     };
 

Core/src/org/sleuthkit/autopsy/mainui/datamodel/MainDAO.java

@@ -43,6 +43,7 @@ import org.sleuthkit.autopsy.casemodule.Case;
 import org.sleuthkit.autopsy.core.UserPreferences;
 import org.sleuthkit.autopsy.coreutils.Logger;
 import org.sleuthkit.autopsy.ingest.IngestManager;
+import org.sleuthkit.autopsy.mainui.datamodel.events.CacheClearEvent;
 import org.sleuthkit.autopsy.mainui.datamodel.events.TreeEvent;
 
 /**
@@ -276,6 +277,9 @@ public class MainDAO extends AbstractDAO {
     @Override
     void clearCaches() {
         allDAOs.forEach((subDAO) -> subDAO.clearCaches());
+        resultEventsManager.firePropertyChange("DATA_CLEAR", null, CacheClearEvent.getInstance());
+        treeEventsManager.firePropertyChange("TREE_CLEAR", null, CacheClearEvent.getInstance());
+
     }
 
     @Override

Core/src/org/sleuthkit/autopsy/mainui/datamodel/events/CacheClearEvent.java

@@ -0,0 +1,51 @@
+/*
+ * Autopsy Forensic Browser
+ *
+ * Copyright 2022 Basis Technology Corp.
+ * Contact: carrier <at> sleuthkit <dot> org
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.sleuthkit.autopsy.mainui.datamodel.events;
+
+/**
+ * Event fired when all dao caches cleared.
+ */
+public class CacheClearEvent {
+
+    private final static CacheClearEvent instance = new CacheClearEvent();
+    
+    /**
+     * @return Singleton instance of this class.
+     */
+    public static CacheClearEvent getInstance() {
+        return instance;
+    }
+    
+    private final String eventType = "CACHE_CLEAR";
+
+
+    private CacheClearEvent() {}
+    
+    /**
+     * @return The event type string.
+     */
+    public String getEventType() {
+        return eventType;
+    }
+    
+    
+    
+    
+    
+}