public byte[] QueuePopFront(string alias)
{
using (var content = new qdb_buffer(_handle))
{
var error = qdb_api.qdb_queue_pop_front(_handle, alias, out content.Pointer, out content.Size);
QdbExceptionThrower.ThrowIfNeeded(error);
return content.GetBytes();
}
}
public byte[] BlobGetAndRemove(string alias)
{
using (var content = new qdb_buffer(_handle))
{
var error = qdb_api.qdb_get_and_remove(_handle, alias, out content.Pointer, out content.Size);
QdbExceptionThrower.ThrowIfNeeded(error);
return content.GetBytes();
}
}
public byte[] BlobGetAndUpdate(string alias, byte[] content, DateTime? expiryTime)
{
using (var oldContent = new qdb_buffer(_handle))
{
var error = qdb_api.qdb_get_and_update(_handle, alias,
content, (IntPtr)content.LongLength,
qdb_time.FromOptionalDateTime(expiryTime),
out oldContent.Pointer, out oldContent.Size);
QdbExceptionThrower.ThrowIfNeeded(error);
return oldContent.GetBytes();
}
}
public byte[] BlobCompareAndSwap(string alias, byte[] content, byte[] comparand, DateTime? expiryTime)
{
using (var oldContent = new qdb_buffer(_handle))
{
var error = qdb_api.qdb_compare_and_swap(_handle, alias,
content, (IntPtr)content.LongLength,
comparand, (IntPtr)comparand.LongLength,
qdb_time.FromOptionalDateTime(expiryTime),
out oldContent.Pointer, out oldContent.Size);
switch (error)
{
case qdb_error.qdb_e_ok:
return null;
case qdb_error.qdb_e_unmatched_content:
return oldContent.GetBytes();
default:
throw QdbExceptionFactory.Create(error);
}
}
}
