CODEWITHSUNDEEP
javamysqlsqlite
Greggg
Greggg

Reputation: 13

Error converting from MySQL to SQLite

It hasn't been too much trouble but there's an error I keep getting from an update from user clicking a button.

Originally in MySQL this was an enum('Y','N') value, but as SQLite doesnt use enums or booleans, I've decided to use an int with 1 and 0 respectively.

How can this be solved?

if(e.getSource()==boughtB){
    String cigName;
    cigName = Habanos2.selection;
    String humiString;
    int humino;

    Connection con = null;
    System.out.println(cigName);

    try{
        ResultSet humiRS1 = HabMenu.getGenericRS("select * from cigar where name = '"+cigName+"'"); 
        if(humiRS1.next()){
            humiString = humiRS1.getString("humi_no");

            humino = Integer.parseInt(humiString);
            System.out.println("humino"+humino);

            Class.forName("org.sqlite.JDBC").newInstance();

            con = DriverManager.getConnection("jdbc:sqlite:cigardb.db");
            Statement s = con.createStatement();
            humino++;
            String humiNoS = Integer.toString(humino);
            s.executeUpdate("update cigar set humi = 1 where name ='"+cigName+"'" );
            s.executeUpdate("update cigar set humi_no = "+humiNoS+"where name ='"+cigName+"'");

            Habanos2Frame.myHumi.setText("");
            ResultSet humiii = HabMenu.getGenericRS("select * from cigar where humi = 1");

It produces this error:

java.sql.SQLException: database locked at org.sqlite.DB.execute(DB.java:270) at org.sqlite.DB.executeUpdate(DB.java:281) mysql humi error humiNoS = at org.sqlite.Stmt.executeUpdate(Stmt.java:103) at cigarDiary.buttonBar$ButtonHandler.actionPerformed(buttonBar.java:207) at javax.swing.AbstractButton.fireActionPerformed(Unknown Source) at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source) at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)

Upvotes: 0

Views: 274

Answers (1)

Greggg
Greggg

Reputation: 13

Ok the way I solved this was by closing each ResultSet (rs.close) and Connection (con.close) after I was finished using it. This is something that MySql doesnt seem to mind but SQLite does. It wont allow you to perform an update while a resultset and its connection are stilll open.

Upvotes: 1

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