public async Task <bool> Exists(TableCreateDefinition def, ITransaction tran)
{
await foreach (RowHolder rh in pageListCollection.Iterate(tran))
{
PagePointerOffsetPair stringPointer = rh.GetField <PagePointerOffsetPair>(1);
if (def.TableName == new string(await stringHeap.Fetch(stringPointer, tran)))
{
return(true);
}
}
return(false);
}
public async Task <bool> Exists(ColumnCreateDefinition def, ITransaction tran)
{
await foreach (RowHolder rh in pageListCollection.Iterate(tran))
{
int tableId = rh.GetField <int>(MetadataColumn.TableIdColumnPos);
if (tableId == def.TableId)
{
PagePointerOffsetPair stringPointer = rh.GetField <PagePointerOffsetPair>(MetadataColumn.ColumnNameColumnPos);
if (def.ColumnName == new string(await stringHeap.Fetch(stringPointer, tran)))
{
return(true);
}
}
}
return(false);
}