/// <summary>
/// Bury an element of an array of entities in Storage based on a NeoStorageKey (NPC Level 4)
/// </summary>
/// <param name="vau">vau</param>
/// <param name="index">index</param>
/// <returns>NeoCounter</returns>
public static NeoCounter BuryElement(NeoVersionedAppUser vau, byte[] domain, int index)
{
if (NeoVersionedAppUser.IsNull(vau)) // TODO - create NeoEntityModel.EntityState.BADKEY?
{
return(NeoCounter.Null());
}
Neo.SmartContract.Framework.Services.Neo.StorageContext ctx = Neo.SmartContract.Framework.Services.Neo.Storage.CurrentContext;
NeoStorageKey nsk = NeoStorageKey.New(vau, domain, _bClassName);
//byte[] bkey;
NeoCounter e;
byte[] bsta = Neo.SmartContract.Framework.Services.Neo.Storage.Get(ctx, NeoStorageKey.StorageKey(nsk, index, _bSTA));
if (NeoTrace.RUNTIME)
{
TraceRuntime("Bury(vau,index).NeoCounter.bsta", bsta.Length, bsta);
}
if (bsta.Length == 0)
{
e = NeoCounter.Missing();
}
else // not MISSING - bury it
{
e = NeoCounter.Tombstone(); // TODO - should Bury() preserve the exist field values or re-initialize them? Preserve is cheaper but not as private
Neo.SmartContract.Framework.Services.Neo.Storage.Put(ctx, NeoStorageKey.StorageKey(nsk, index, _bSTA), e._state.AsBigInteger());
Neo.SmartContract.Framework.Services.Neo.Storage.Put(ctx, NeoStorageKey.StorageKey(nsk, index, _bCurrentNumber), e._currentNumber); // NPCLevel4EBuryElement_cs.txt
} // Template: NPCLevel4Part2_cs.txt
if (NeoTrace.RUNTIME)
{
LogExt("Bury(vau,i).NeoCounter", e);
}
return(e);
}
