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POHow to enforce foreign keys using Xerial SQLite JDBC?
 

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  1. POHow to enforce foreign keys using Xerial SQLite JDBC?
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    <p>According to their release notes, the <a href="http://www.xerial.org/trac/Xerial/wiki/SQLiteJDBC" rel="nofollow noreferrer">Xerial SQLite JDBC</a> driver supports foreign keys since version 3.6.20.1. I have tried some time now to get a foreign key constraint to be enforced, but to no avail. Here is what I came up with:</p> <pre><code>public static void main(String[] args) throws ClassNotFoundException, SQLException { Class.forName("org.sqlite.JDBC"); SQLiteConfig config = new SQLiteConfig(); config.enforceForeignKeys(true); Connection connection = DriverManager.getConnection("jdbc:sqlite::memory:", config.toProperties()); connection.createStatement().executeUpdate( "CREATE TABLE artist(" + "artistid INTEGER PRIMARY KEY, " + "artistname TEXT);"); connection.createStatement().executeUpdate( "CREATE TABLE track("+ "trackid INTEGER," + "trackname TEXT," + "trackartist INTEGER," + "FOREIGN KEY(trackartist) REFERENCES artist(artistid)" + ");"); connection.createStatement().executeUpdate( "INSERT INTO track VALUES(14, 'Mr. Bojangles', 3)"); } </code></pre> <p>The table definitions are taken directly from the sample in the <a href="http://www.sqlite.org/foreignkeys.html" rel="nofollow noreferrer">SQLite documentation</a>. This is supposed to fail, but it doesn't. I also checked, and it really inserts the tuple (no ignore or something like that).</p> <p>Does anyone have any experience with that, or knows how to make it work?</p> <p><strong>Update</strong></p> <p>I got a <a href="http://code.google.com/p/xerial/source/browse/src/test/java/org/sqlite/ConnectionTest.java?repo=sqlite#68" rel="nofollow noreferrer">testcase from Xerial</a> that runs for them but fails for me. So there is nothing wrong with the code, but probably the setup. I run on Mac OS and this comes with SQLite 3.6.12 (no foreign keys) installed. Is it possible that their library uses this? How can I check this? If so, how can I make it use another version?</p>
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