public static Offset <LineItemKey> CreateLineItemKey(FlatBufferBuilder builder,
StringOffset prodCodeOffset = default(StringOffset),
int orderId = 0)
{
builder.StartObject(2);
LineItemKey.AddOrderId(builder, orderId);
LineItemKey.AddProdCode(builder, prodCodeOffset);
return(LineItemKey.EndLineItemKey(builder));
}
public static Offset <KdSoft.Lmdb.Tests.fbs.LineItemKey> CreateLineItemKey(FlatBufferBuilder builder,
StringOffset prod_codeOffset = default(StringOffset),
int order_id = 0)
{
builder.StartTable(2);
LineItemKey.AddOrderId(builder, order_id);
LineItemKey.AddProdCode(builder, prod_codeOffset);
return(LineItemKey.EndLineItemKey(builder));
}
public void SimpleStoreRetrieve()
{
var config = new DatabaseConfiguration(DatabaseOptions.Create);
Database dbase;
Statistics stats;
using (var tx = fixture.Env.BeginDatabaseTransaction(TransactionModes.None)) {
dbase = tx.OpenDatabase("TestDb3", config);
stats = dbase.GetStats(tx);
tx.Commit();
}
var buffer = fixture.Buffers.Acquire(1024);
try {
FlatBufferBuilder liBuilder = new FlatBufferBuilder(64);
FlatBufferBuilder liKeyBuilder = new FlatBufferBuilder(32);
// in FlatBuffers, each serializable item is backed by a byte buffer, the item itself is a struct
byte[] liBytes;
byte[] li2Bytes;
using (var tx = fixture.Env.BeginTransaction(TransactionModes.None)) {
var prodCode = liKeyBuilder.CreateString("GIN");
var lik = LineItemKey.CreateLineItemKey(liKeyBuilder, prodCode, 1);
liKeyBuilder.Finish(lik.Value);
prodCode = liBuilder.CreateString("GIN");
lik = LineItemKey.CreateLineItemKey(liBuilder, prodCode, 1);
var li = LineItem.CreateLineItem(liBuilder, lik, 24);
liBuilder.Finish(li.Value);
liBytes = liBuilder.SizedByteArray();
// lineItem points into the liBuilder's data buffer
var lineItem = LineItem.GetRootAsLineItem(liBuilder.DataBuffer);
var keySpan = liKeyBuilder.DataBuffer.ToSpan();
var dataSpan = liBuilder.DataBuffer.ToSpan();
dbase.Put(tx, keySpan, dataSpan, PutOptions.None);
liKeyBuilder.Clear();
liBuilder.Clear();
prodCode = liKeyBuilder.CreateString("WHISKY");
lik = LineItemKey.CreateLineItemKey(liKeyBuilder, prodCode, 2);
liKeyBuilder.Finish(lik.Value);
prodCode = liBuilder.CreateString("WHISKY");
lik = LineItemKey.CreateLineItemKey(liBuilder, prodCode, 2);
li = LineItem.CreateLineItem(liBuilder, lik, 32);
liBuilder.Finish(li.Value);
li2Bytes = liBuilder.SizedByteArray();
keySpan = liKeyBuilder.DataBuffer.ToSpan();
dataSpan = liBuilder.DataBuffer.ToSpan();
dbase.Put(tx, keySpan, dataSpan, PutOptions.None);
tx.Commit();
}
byte[] liOutBytes;
byte[] liOut2Bytes;
using (var tx = fixture.Env.BeginReadOnlyTransaction(TransactionModes.None)) {
liKeyBuilder.Clear();
var prodCode = liKeyBuilder.CreateString("GIN");
var lik = LineItemKey.CreateLineItemKey(liKeyBuilder, prodCode, 1);
liKeyBuilder.Finish(lik.Value);
var keySpan = liKeyBuilder.DataBuffer.ToSpan();
Assert.True(dbase.Get(tx, keySpan, out ReadOnlySpan <byte> dataSpan));
liOutBytes = dataSpan.ToArray();
// lineItemOut points into liOutBytes
var lineItemOut = LineItem.GetRootAsLineItem(new ByteBuffer(liOutBytes));
liKeyBuilder.Clear();
prodCode = liKeyBuilder.CreateString("WHISKY");
lik = LineItemKey.CreateLineItemKey(liKeyBuilder, prodCode, 2);
liKeyBuilder.Finish(lik.Value);
keySpan = liKeyBuilder.DataBuffer.ToSpan();
Assert.True(dbase.Get(tx, keySpan, out dataSpan));
liOut2Bytes = dataSpan.ToArray();
tx.Commit();
}
Assert.True(liBytes.SequenceEqual(liOutBytes));
Assert.True(li2Bytes.SequenceEqual(liOut2Bytes));
}
finally {
fixture.Buffers.Return(buffer);
using (var tx = fixture.Env.BeginDatabaseTransaction(TransactionModes.None)) {
dbase.Drop(tx);
tx.Commit();
}
}
}
public static LineItemKey GetRootAsLineItemKey(ByteBuffer _bb, LineItemKey obj)
{
return(obj.__assign(_bb.GetInt(_bb.Position) + _bb.Position, _bb));
}
