[Mono-bugs] [Bug 635995] New: Attempting to use Mono.Data.Sqlite on an Android 2.2 Emulator produces a DllNotFound exception

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Tue Aug 31 16:21:26 EDT 2010


https://bugzilla.novell.com/show_bug.cgi?id=635995

https://bugzilla.novell.com/show_bug.cgi?id=635995#c0


           Summary: Attempting to use Mono.Data.Sqlite on an Android 2.2
                    Emulator produces a DllNotFound exception
    Classification: Mono
           Product: MonoDroid
           Version: unspecified
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Class Libraries
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: hudson at alumni.unc.edu
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


Description of Problem:

Code using Mono.Data.Sqlite that runs under Windows produces a DllNotFound
exception on the Android emulator.

Steps to reproduce the problem:
1. Create a SqliteConnection
2. Call Open()

Actual Results:
Got exception:System.DllNotFoundExceptoin: sqlite3 at (wrapper
managed-to-native) Mono.Data.Sqlite. UnsafeNativeMethods: sqlite3_open_v2
(byte[],intptr&,int,intptr) at Mono.Data.Sqlite.SQLite3.Open


Expected Results:
Open database we can read & write.

How often does this happen? Repeatable


Additional Information:
We get pretty much the same exception on Windows if the DLL isn't present in
our running directory.

Simplified version of Javascript code that runs on Windows but catches an
exception on Android:

import Mono.Data.Sqlite;
import System.Data.ConnectionState;
var dbcon : SqliteConnection = null;

function OpenDB ()
{
  if (dbcon == null)
  {
    var connStrn : String = "URI=file:MyApp.db";
    dbcon = new SqliteConnection (connStrn);
  }
  if (dbcon != null)
  {
    try
    {
      dbcon.Open();
    }
    catch (e)
    {
      // tie into your error reporting framework here
    }
  }
}

>From #monodroid:
<kangaroo>: TomHudson: Sounds like a trivial bug
<kangaroo>: can you file it and I'll look at getting it fixed for the next
preview?
<kangaroo>: thanks
..
<kangaroo>: jonp: Its /system/lib/libsqlite.so

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