If you use some sort of factory class to create or return connections to the database, you can individually set connections to be read-only:
public Connection getReadOnlyConnection() {
// Alternatively this could come from a connection pool:
final Connection conn = DriverManager.getConnection("jdbc:sqlite:sample.db");
conn.setReadOnly(true);
return conn;
}
If you're using a connection pool, then you may also want to provide a method for getting writeable connections too:
public Connection getWriteableConnection() {
final Connection conn = getPooledConnection(); // I'm assuming this method exists!
conn.setReadOnly(false);
return conn;
}
You could also provide just a single getConnection(boolean readOnly)
method and simply pass the parameter through to the setReadOnly(boolean)
call. I prefer the separate methods personally, as it makes your intent much clearer.
Alternatively, some databases like Oracle provide a read only mode that can be enabled. SQLite doesn't provide one, but you can emulate it by simply setting the actual database files (including directories) to read only on the filesystem itself.
Another way of doing it is as follows (credit goes to deadlock for the below code):
public Connection getReadOnlyConnection() {
SQLiteConfig config = new SQLiteConfig();
config.setReadOnly(true);
Connection conn = DriverManager.getConnection("jdbc:sqlite:sample.db",
config.toProperties());
}