private void Initialize()
{
if (!this.disposed)
{
if (this.serviceProvider == IntPtr.Zero)
{
lock (this.serviceProviderStateLock)
{
if (!this.disposed && this.serviceProvider == IntPtr.Zero)
{
uint errorCode = ServiceInteropWrapper.CreateServiceProvider(
this.queryengineConfiguration,
out this.serviceProvider);
Exception exception = Marshal.GetExceptionForHR((int)errorCode);
if (exception != null)
{
throw exception;
}
}
}
}
}
else
{
throw new ObjectDisposedException(typeof(QueryPartitionProvider).Name);
}
}
internal static TryCatch <IntPtr> TryCreateServiceProvider(string queryEngineConfiguration)
{
try
{
IntPtr serviceProvider = IntPtr.Zero;
uint errorCode = ServiceInteropWrapper.CreateServiceProvider(
queryEngineConfiguration,
out serviceProvider);
Exception exception = Marshal.GetExceptionForHR((int)errorCode);
if (exception != null)
{
DefaultTrace.TraceWarning("QueryPartitionProvider.TryCreateServiceProvider failed with exception {0}", exception);
return(TryCatch <IntPtr> .FromException(exception));
}
return(TryCatch <IntPtr> .FromResult(serviceProvider));
}
catch (Exception ex)
{
DefaultTrace.TraceWarning("QueryPartitionProvider.TryCreateServiceProvider failed with exception {0}", ex);
return(TryCatch <IntPtr> .FromException(ex));
}
}
