Initial Repository Push

src/engine/workthreads/PurgeOprhans.java

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+// • ▌ ▄ ·.  ▄▄▄·  ▄▄ • ▪   ▄▄· ▄▄▄▄·  ▄▄▄·  ▐▄▄▄  ▄▄▄ .
+// ·██ ▐███▪▐█ ▀█ ▐█ ▀ ▪██ ▐█ ▌▪▐█ ▀█▪▐█ ▀█ •█▌ ▐█▐▌·
+// ▐█ ▌▐▌▐█·▄█▀▀█ ▄█ ▀█▄▐█·██ ▄▄▐█▀▀█▄▄█▀▀█ ▐█▐ ▐▌▐▀▀▀
+// ██ ██▌▐█▌▐█ ▪▐▌▐█▄▪▐█▐█▌▐███▌██▄▪▐█▐█ ▪▐▌██▐ █▌▐█▄▄▌
+// ▀▀  █▪▀▀▀ ▀  ▀ ·▀▀▀▀ ▀▀▀·▀▀▀ ·▀▀▀▀  ▀  ▀ ▀▀  █▪ ▀▀▀
+//      Magicbane Emulator Project © 2013 - 2022
+//                www.magicbane.com
+
+package engine.workthreads;
+
+import engine.db.archive.DataWarehouse;
+import org.pmw.tinylog.Logger;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.util.concurrent.atomic.LongAdder;
+
+/*
+ * This thread runs at bootstrap to ensure cleanup of
+ * orphaned items (deleted items).  God does this mess
+ * ever need to be refactored and re-use of item uuid's
+ * implemented.
+ */
+public class PurgeOprhans implements Runnable {
+
+    public static LongAdder recordsDeleted = new LongAdder();
+
+    public PurgeOprhans() {
+
+        recordsDeleted.reset();
+
+    }
+
+    public static void startPurgeThread() {
+
+        Thread purgeOrphans;
+        purgeOrphans = new Thread(new PurgeOprhans());
+
+        purgeOrphans.setName("purgeOrphans");
+        purgeOrphans.start();
+    }
+
+    public void run() {
+
+        // Member variable declaration
+
+        try (
+                Connection connection = DataWarehouse.connectionPool.getConnection();
+                PreparedStatement statement = connection.prepareStatement("SELECT * from `object` where `type` = 'item' AND `parent` IS NULL", ResultSet.TYPE_SCROLL_SENSITIVE, ResultSet.CONCUR_UPDATABLE);
+                ResultSet rs = statement.executeQuery()) {
+
+            while (rs.next()) {
+                rs.deleteRow();
+                recordsDeleted.increment();
+            }
+
+        } catch (Exception e) {
+            Logger.error( e.toString());
+        }
+
+        Logger.info("Thread is exiting with " + recordsDeleted.toString() + " items deleted");
+    }
+
+}