--- a/src/luan/modules/lucene/PostgresBackup.java	Mon Sep 02 22:23:12 2019 -0600
+++ b/src/luan/modules/lucene/PostgresBackup.java	Tue Sep 03 22:12:53 2019 -0600
@@ -1,12 +1,16 @@
 package luan.modules.lucene;
 
+import java.io.IOException;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.Statement;
 import java.sql.PreparedStatement;
 import java.sql.SQLException;
+import java.sql.ResultSet;
 import java.util.Properties;
+import luan.Luan;
 import luan.LuanTable;
+import luan.LuanFunction;
 import luan.LuanException;
 import luan.modules.parsers.LuanToString;
 import luan.lib.logging.Logger;
@@ -34,6 +38,8 @@
 	private final PreparedStatement updateStmt;
 	private final PreparedStatement deleteStmt;
 	private int trans = 0;
+	private final LuanToString luanToString = new LuanToString();
+	private final LuanTable env = new LuanTable(new Luan());
 
 	private PostgresBackup()
 		throws ClassNotFoundException, SQLException
@@ -71,6 +77,10 @@
 		deleteStmt = con.prepareStatement(
 			"delete from lucene where id=?"
 		);
+
+		luanToString.strict = true;
+		luanToString.numberTypes = true;
+		LuanToString.addNumberTypes(env);
 	}
 
 	void close() {
@@ -95,7 +105,7 @@
 	void add(long id,LuanTable doc) throws LuanException {
 		try {
 //logger.info("getAutoCommit="+con.getAutoCommit());
-			String data = LuanToString.toString(doc,true);
+			String data = luanToString.toString(doc);
 			insertStmt.setLong(1,id);
 			insertStmt.setString(2,data);
 			insertStmt.executeUpdate();
@@ -106,7 +116,7 @@
 
 	void update(long id,LuanTable doc) throws LuanException {
 		try {
-			String data = LuanToString.toString(doc,true);
+			String data = luanToString.toString(doc);
 			updateStmt.setString(1,data);
 			updateStmt.setLong(2,id);
 			int n = updateStmt.executeUpdate();
@@ -177,4 +187,45 @@
 		}
 	}
 
+	private final Luan luanEval = new Luan();
+
+	private Object eval(String s) throws LuanException {
+		LuanFunction fn = env.luan().load( "return "+s, "PostgresBackup", env );
+		return fn.call();
+	}
+
+	void restoreLucene(LuceneIndex li)
+		throws LuanException, IOException
+	{
+		try {
+			Statement stmt = con.createStatement();
+			ResultSet rs = stmt.executeQuery("select data from lucene");
+			while( rs.next() ) {
+				String data = rs.getString("data");
+				LuanTable doc = (LuanTable)eval(data);
+				li.restore(doc);
+			}
+			stmt.close();
+		} catch(SQLException e) {
+			logger.error("restoreLucene failed",e);
+			throw new RuntimeException(e);
+		}
+	}
+
+	long maxId()
+		throws LuanException, IOException
+	{
+		try {
+			Statement stmt = con.createStatement();
+			ResultSet rs = stmt.executeQuery("select max(id) as m from lucene");
+			rs.next();
+			long m = rs.getLong("m");
+			stmt.close();
+			return m;
+		} catch(SQLException e) {
+			logger.error("maxId failed",e);
+			throw new RuntimeException(e);
+		}
+	}
+
 }