public Nametable32(Func <Stream> stream_gen)
{
PType tp_elem = new PTypeRecord(
new NamedType("code", new PType(PTypeEnumeration.integer)),
new NamedType("str", new PType(PTypeEnumeration.sstring)));
table = new UniversalSequenceBase(tp_elem, stream_gen());
str_offsets = new UniversalSequence <long>(new PType(PTypeEnumeration.longinteger), stream_gen());
Comparer <object> comp_str = Comparer <object> .Create(new Comparison <object>((object a, object b) =>
{
var aa = (string)((object[])a)[1];
var bb = (string)((object[])b)[1];
return(aa.CompareTo(bb));
}));
name_index = new IndexKey32CompImm(stream_gen, table,
ob => Hashfunctions.HashRot13((string)((object[])ob)[1]), comp_str);
dyna_index = new Dictionary <string, int>();
}
public TripleStoreInt32_(Func <Stream> stream_gen)
{
// Тип Object Variants
PType tp_ov = new PTypeUnion(
new NamedType("dummy", new PType(PTypeEnumeration.none)),
new NamedType("iri", new PType(PTypeEnumeration.integer)),
new NamedType("str", new PType(PTypeEnumeration.sstring)));
PType tp_triple = new PTypeRecord(
new NamedType("subj", new PType(PTypeEnumeration.integer)),
new NamedType("pred", new PType(PTypeEnumeration.integer)),
new NamedType("obj", tp_ov));
table = new UniversalSequenceBase(tp_triple, stream_gen());
s_index = new IndexKey32CompImm(stream_gen, table, ob => (int)((object[])ob)[0], null);
string selected_chars = "!\"#$%&\'()*+,-./0123456789:;<=>?@abcdefghjklmnopqrstuwxyz{|}~абвгдежзийклмнопрстуфхцчшщъыьэюяё";
Func <object, int> halfKeyFun = ob =>
{
object[] tri = (object[])ob;
object[] pair = (object[])tri[2];
int tg = (int)pair[0];
if (tg == 1) // iri
{
return(1 - (int)pair[1]);
}
else if (tg == 2) // str
{
string s = (string)pair[1];
int len = s.Length;
var chs = s.ToCharArray()
.Concat(Enumerable.Repeat(' ', len < 4 ? 4 - len : 0))
.Take(4)
.Select(ch =>
{
int ind = selected_chars.IndexOf(ch);
if (ind == -1)
{
ind = 0; // неизвестный символ помечается как '!'
}
return(ind);
}).ToArray();
return((chs[0] << 24) | (chs[1] << 16) | (chs[2] << 8) | chs[3]);
}
throw new Exception("Err: 292333");
};
Test_keyfun = halfKeyFun;
Comparer <object> comp = Comparer <object> .Create(new Comparison <object>((object a, object b) =>
{
object[] aa = (object[])((object[])a)[2];
object[] bb = (object[])((object[])b)[2];
int a1 = (int)aa[0];
int b1 = (int)bb[0];
int cmp = a1.CompareTo(b1);
if (cmp != 0)
{
return(cmp);
}
if (a1 == 1)
{
return(((int)aa[1]).CompareTo(((int)bb[1])));
}
return(((string)aa[1]).CompareTo(((string)bb[1])));
}));
o_index = new IndexKey32CompImm(stream_gen, table, halfKeyFun, comp);
}
public static void Main15()
{
string path = "../../../";
Random rnd = new Random();
int cnt = 0;
System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
Console.WriteLine("Start Main15");
Func <Stream> streamGen = () => new FileStream(path + "Databases/g" + (cnt++) + ".bin",
FileMode.OpenOrCreate, FileAccess.ReadWrite);
PType tp_person = new PTypeRecord(
new NamedType("id", new PType(PTypeEnumeration.integer)),
new NamedType("name", new PType(PTypeEnumeration.sstring)),
new NamedType("years", new PType(PTypeEnumeration.real)));
Comparer <object> comp_string = Comparer <object> .Create(new Comparison <object>((object a, object b) =>
{
var aa = (string)((object[])a)[1];
var bb = (string)((object[])b)[1];
return(aa.CompareTo(bb));
}));
UniversalSequenceBase table = new UniversalSequenceBase(tp_person, streamGen());
IndexKey32CompImm id_index = new IndexKey32CompImm(streamGen, table, ob => (int)((object[])ob)[0], null);
//IndexKey32CompImm namehash_index = new IndexKey32CompImm(streamGen, table,
// ob => Hashfunctions.HashRot13((string)((object[])ob)[1]), null);
//IndexKey32CompImm namehash_index_full = new IndexKey32CompImm(streamGen, table,
// ob => Hashfunctions.HashRot13((string)((object[])ob)[1]), comp_string);
IndexViewImmutable nameview_index = new IndexViewImmutable(streamGen, table, comp_string, path + "Databases/", 50_000_000);
int nelements = 1_000_000;
Console.WriteLine($" nelements={nelements}");
// Загрузка
bool toload = true;
if (toload)
{
sw.Restart();
var dataflow = Enumerable.Range(0, nelements)
.Select(nom => new object[] { nelements - nom - 1, "" + (nelements - nom - 1),
rnd.NextDouble() * 100D });
table.Clear();
foreach (object[] element in dataflow)
{
table.AppendElement(element);
}
table.Flush();
id_index.Build();
//namehash_index.Build();
//namehash_index_full.Build();
nameview_index.Build();
sw.Stop();
Console.WriteLine($"Indexes ok. duration={sw.ElapsedMilliseconds}");
}
else
{
sw.Restart();
table.Refresh();
id_index.Refresh();
//namehash_index.Refresh();
//namehash_index_full.Refresh();
nameview_index.Refresh();
sw.Stop();
Console.WriteLine($"refresh {nelements} ok. duration={sw.ElapsedMilliseconds}");
}
int id = nelements * 2 / 3;
int nprobe = 1000;
int total = 0;
var query1 = id_index.GetAllBySample(new object[] { id, null, -1.0D });
foreach (var obj in query1)
{
Console.WriteLine(tp_person.Interpret(obj));
}
sw.Restart();
for (int i = 0; i < nprobe; i++)
{
id = rnd.Next(nelements);
total += id_index.GetAllBySample(new object[] { id, null, -1.0D }).Count();
}
sw.Stop();
Console.WriteLine($"GetById {nprobe} probes. duration={sw.ElapsedMilliseconds}");
// Работаем с именами
string name = "" + (nelements * 2 / 3);
//var query2 = namehash_index.GetAllBySample(new object[] { -1, name, -1.0D });
//foreach (var obj in query2) Console.WriteLine(tp_person.Interpret(obj));
//total = 0;
//sw.Restart();
//for (int i = 0; i < nprobe; i++)
//{
// name = "" + rnd.Next(nelements);
// total += namehash_index.GetAllBySample(new object[] { -1, name, -1.0D }).Count();
//}
//sw.Stop();
//Console.WriteLine($"GetByNameHash {nprobe} probes. duration={sw.ElapsedMilliseconds} total={total}");
// Работаем с именами и компаратором
//name = "" + (nelements / 3);
//var query3 = namehash_index_full.GetAllBySample(new object[] { -1, name, -1.0D });
//foreach (var obj in query3) Console.WriteLine(tp_person.Interpret(obj));
//total = 0;
//sw.Restart();
//for (int i = 0; i < nprobe; i++)
//{
// name = "" + rnd.Next(nelements);
// total += namehash_index_full.GetAllBySample(new object[] { -1, name, -1.0D }).Count();
//}
//sw.Stop();
//Console.WriteLine($"GetByNameHash Full {nprobe} probes. duration={sw.ElapsedMilliseconds} total={total}");
// Работаем с view индексом
name = "" + (nelements * 2 / 3);
var query4 = nameview_index.SearchAll(new object[] { -1, name, -1.0D });
foreach (var obj in query4)
{
Console.WriteLine(tp_person.Interpret(obj));
}
nprobe = 1000;
total = 0;
sw.Restart();
for (int i = 0; i < nprobe; i++)
{
name = "" + rnd.Next(nelements);
total += nameview_index.SearchAll(new object[] { -1, name, -1.0D }).Count();
}
sw.Stop();
Console.WriteLine($"IndexView search for {nprobe} probes. duration={sw.ElapsedMilliseconds} total={total}");
}