/// <summary>
/// Execute a ADO.NET operation on a command object using an Object Callback.
/// </summary>
/// <remarks>This allows for implementing arbitrary data access operations
/// on a single command within Spring's managed DB4o environment.</remarks>
/// <param name="callback">The delegate called with a command object.</param>
/// <returns>A result object returned by the action or null</returns>
public Object Execute(IDb4oCallback callback)
{
logger.Debug("Execute Callback");
// get a possibly existing connection
ObjectContainer container = Db4oUtils.GetConnection(DataSource);
object result;
try{
logger.Debug("DoInDb4o");
result = callback.DoInDb4o(container);
} catch (Exception e) {
logger.Error("Exception while executing in Db4o", e);
throw ConvertDb4oAccessException(e);
}
// dispose from the connection
Db4oUtils.DisposeConnection(container, DataSource);
return(result);
}
