Refactor to remove abstraction

src/engine/db/handlers/dbMineHandler.java

@@ -13,7 +13,12 @@ import engine.gameManager.DbManager;
 import engine.objects.Mine;
 import engine.objects.MineProduction;
 import engine.objects.Resource;
+import org.pmw.tinylog.Logger;
 
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
 import java.util.ArrayList;
 
 public class dbMineHandler extends dbHandlerBase {
@@ -29,68 +34,103 @@ public class dbMineHandler extends dbHandlerBase {
 			return null;
 
 		Mine mine = (Mine) DbManager.getFromCache(Enum.GameObjectType.Mine, id);
+
 		if (mine != null)
 			return mine;
 
-		prepareCallable("SELECT `obj_building`.*, `object`.`parent` FROM `object` INNER JOIN `obj_building` ON `obj_building`.`UID` = `object`.`UID` WHERE `object`.`UID` = ?;");
+		try (Connection connection = DbManager.getConnection();
+			 PreparedStatement preparedStatement = connection.prepareStatement("SELECT `obj_building`.*, `object`.`parent` FROM `object` INNER JOIN `obj_building` ON `obj_building`.`UID` = `object`.`UID` WHERE `object`.`UID` = ?;")) {
 
-		setLong(1, (long) id);
+			preparedStatement.setLong(1, id);
-		return (Mine) getObjectSingle(id);
 
+			ResultSet rs = preparedStatement.executeQuery();
+			mine = (Mine) getObjectFromRs(rs);
+
+		} catch (SQLException e) {
+			Logger.error(e);
+		}
+		return mine;
 	}
 
 	public ArrayList<Mine> GET_ALL_MINES_FOR_SERVER() {
-		prepareCallable("SELECT `obj_mine`.*, `object`.`parent` FROM `object` INNER JOIN `obj_mine` ON `obj_mine`.`UID` = `object`.`UID`");
+
-		return getObjectList();
+		ArrayList<Mine> mines = new ArrayList<>();
+
+		try (Connection connection = DbManager.getConnection();
+			 PreparedStatement preparedStatement = connection.prepareStatement("SELECT `obj_mine`.*, `object`.`parent` FROM `object` INNER JOIN `obj_mine` ON `obj_mine`.`UID` = `object`.`UID`")) {
+
+			ResultSet rs = preparedStatement.executeQuery();
+			mines = getObjectsFromRs(rs, 1000);
+
+		} catch (SQLException e) {
+			Logger.error(e);
+		}
+		return mines;
 	}
 
 	public boolean CHANGE_OWNER(Mine mine, int playerUID) {
-		prepareCallable("UPDATE `obj_mine` SET `mine_ownerUID`=? WHERE `UID`=?");
+
-		setInt(1, playerUID);
+		try (Connection connection = DbManager.getConnection();
-		setLong(2, (long) mine.getObjectUUID());
+			 PreparedStatement preparedStatement = connection.prepareStatement("UPDATE `obj_mine` SET `mine_ownerUID`=? WHERE `UID`=?")) {
-		return (executeUpdate() > 0);
+
+			preparedStatement.setInt(1, playerUID);
+			preparedStatement.setLong(2, mine.getObjectUUID());
+
+			return (preparedStatement.executeUpdate() > 0);
+
+		} catch (SQLException e) {
+			Logger.error(e);
+			return false;
+		}
 	}
 
 	public boolean CHANGE_RESOURCE(Mine mine, Resource resource) {
-		prepareCallable("UPDATE `obj_mine` SET `mine_resource`=? WHERE `UID`=?");
+
-		setString(1, resource.name());
+		try (Connection connection = DbManager.getConnection();
-		setLong(2, (long) mine.getObjectUUID());
+			 PreparedStatement preparedStatement = connection.prepareStatement("UPDATE `obj_mine` SET `mine_resource`=? WHERE `UID`=?")) {
-		return (executeUpdate() > 0);
+
+			preparedStatement.setString(1, resource.name());
+			preparedStatement.setLong(2, mine.getObjectUUID());
+
+			return (preparedStatement.executeUpdate() > 0);
+
+		} catch (SQLException e) {
+			Logger.error(e);
+			return false;
+		}
 	}
 
 	public boolean CHANGE_TYPE(Mine mine, MineProduction productionType) {
-		prepareCallable("UPDATE `obj_mine` SET `mine_type`=? WHERE `UID`=?");
+
-		setString(1, productionType.name());
+		try (Connection connection = DbManager.getConnection();
-		setLong(2, (long) mine.getObjectUUID());
+			 PreparedStatement preparedStatement = connection.prepareStatement("UPDATE `obj_mine` SET `mine_type`=? WHERE `UID`=?")) {
-		return (executeUpdate() > 0);
+
+			preparedStatement.setString(1, productionType.name());
+			preparedStatement.setLong(2, mine.getObjectUUID());
+
+			return (preparedStatement.executeUpdate() > 0);
+
+		} catch (SQLException e) {
+			Logger.error(e);
+			return false;
+		}
+
 	}
 
 	public boolean SET_FLAGS(Mine mine, int newFlags) {
-		prepareCallable("UPDATE `obj_mine` SET `flags`=? WHERE `UID`=?");
-		setInt(1, newFlags);
-		setLong(2, (long) mine.getObjectUUID());
-		return (executeUpdate() > 0);
-	}
 
-	public String SET_PROPERTY(final Mine m, String name, Object new_value) {
+		try (Connection connection = DbManager.getConnection();
-		prepareCallable("CALL mine_SETPROP(?,?,?)");
+			 PreparedStatement preparedStatement = connection.prepareStatement("UPDATE `obj_mine` SET `flags`=? WHERE `UID`=?")) {
-		setLong(1, (long) m.getObjectUUID());
-		setString(2, name);
-		setString(3, String.valueOf(new_value));
-		return getResult();
-	}
 
-	// Advance all the mine windows respective to the current day
+			preparedStatement.setInt(1, newFlags);
-	// at boot time.  This ensures that mines always go live
+			preparedStatement.setLong(2, mine.getObjectUUID());
-	// no matter what date in the database
 
-	public String SET_PROPERTY(final Mine m, String name, Object new_value, Object old_value) {
+			return (preparedStatement.executeUpdate() > 0);
-		prepareCallable("CALL mine_GETSETPROP(?,?,?,?)");
+
-		setLong(1, (long) m.getObjectUUID());
+		} catch (SQLException e) {
-		setString(2, name);
+			Logger.error(e);
-		setString(3, String.valueOf(new_value));
+			return false;
-		setString(4, String.valueOf(old_value));
+		}
-		return getResult();
 	}
 
 }