--- a/src/luan/modules/lucene/PostgresBackup.java	Thu Nov 05 20:24:09 2020 -0700
+++ b/src/luan/modules/lucene/PostgresBackup.java	Sun Nov 08 16:50:59 2020 -0700
@@ -34,7 +34,7 @@
 	private final PreparedStatement updateStmt;
 	private final PreparedStatement deleteStmt;
 	private int trans = 0;
-	private final LuanToString luanToString = new LuanToString(null,null);
+	private final LuanToString luanToString;
 
 	PostgresBackup(Luan luan,LuanTable spec)
 		throws ClassNotFoundException, SQLException, LuanException
@@ -82,6 +82,7 @@
 			"delete from lucene where id=?"
 		);
 
+		luanToString = new LuanToString(luan,null,null);
 		luanToString.settingsInit.strict = true;
 		luanToString.settingsInit.numberTypes = true;
 	}
@@ -102,23 +103,23 @@
 		super.finalize();
 	}
 
-	void add(LuanTable doc) throws LuanException, SQLException {
-		Long id = (Long)doc.get("id");
+	void add(Luan luan,LuanTable doc) throws LuanException, SQLException {
+		Long id = (Long)doc.get(luan,"id");
 		String data = luanToString.toString(doc);
 		insertStmt.setLong(1,id);
 		insertStmt.setString(2,data);
 		insertStmt.executeUpdate();
 	}
 
-	void update(LuanTable doc) throws LuanException, SQLException {
-		Long id = (Long)doc.get("id");
+	void update(Luan luan,LuanTable doc) throws LuanException, SQLException {
+		Long id = (Long)doc.get(luan,"id");
 		String data = luanToString.toString(doc);
 		updateStmt.setString(1,data);
 		updateStmt.setLong(2,id);
 		int n = updateStmt.executeUpdate();
 		if( n==0 ) {
 			logger.error("update not found for id="+id+", trying add");
-			add(doc);
+			add(luan,doc);
 		} else if( n!=1 )
 			throw new RuntimeException();
 	}
@@ -158,12 +159,11 @@
 	void restoreLucene(LuceneIndex li)
 		throws LuanException, IOException, SQLException, ParseException
 	{
-		Luan luan = new Luan();
 		Statement stmt = con.createStatement();
 		ResultSet rs = stmt.executeQuery("select data from lucene");
 		while( rs.next() ) {
 			String data = rs.getString("data");
-			LuanTable doc = (LuanTable)LuanParser.parse(luan,data);
+			LuanTable doc = (LuanTable)LuanParser.parse(data);
 			li.restore(doc);
 		}
 		stmt.close();
@@ -172,7 +172,6 @@
 	final class Checker {
 		private final Connection con;
 		private final PreparedStatement pstmt;
-		private final Luan luan = new Luan();
 
 		Checker() throws SQLException {
 			con = newConnection();
@@ -205,7 +204,7 @@
 			if( !rs.next() )
 				return null;
 			String data = rs.getString("data");
-			LuanTable doc = (LuanTable)LuanParser.parse(luan,data);
+			LuanTable doc = (LuanTable)LuanParser.parse(data);
 			return doc;
 		}
 	}