public void Load() // В стандартном случае, задается null
{
offsetsCell.Clear();
if (!offsetsOnOffsetsCell.IsEmpty && offsetsOnOffsetsCell.Root.Count() != (long)Int32.MaxValue + Int32.MaxValue)
{
offsetsOnOffsetsCell.Clear();
}
if (offsetsOnOffsetsCell.IsEmpty)
{
offsetsOnOffsetsCell.Fill(new object[0]);
for (int i = Int32.MinValue; i < Int32.MaxValue; i++)
{
offsetsOnOffsetsCell.Root.AppendElement(long.MinValue);
}
offsetsOnOffsetsCell.Flush();
}
else
{
for (long i = 0; i < (long)Int32.MaxValue + Int32.MaxValue; i++)
{
offsetsOnOffsetsCell.Root.Element(i).Set(long.MinValue);
}
}
offsetsCell.Fill(new object[0]);
ArrayIntMax <bool> hashExists = new ArrayIntMax <bool>();
foreach (var rec in table.Root.Elements()) //.Where(ent => (bool)ent.Field(0).Get() == false) загрузка всех элементов за исключением уничтоженных
{
Tkey key = keyProducer(rec);
Int32 hash = hashProducer(key);
var offsetOnOffsetEntry = offsetsOnOffsetsCell.Root.Element((long)hash + (long)Int32.MaxValue);
if (hashExists[hash])
{
entryOffsetCell.offset = (long)offsetOnOffsetEntry.Get() + 8; //пропускаем первый.
int i = 1;
while ((long)entryOffsetCell.Get() != long.MinValue)
{
if (++i == CollisionMax)
{
throw new Exception(
"Достигнуо максимально допустимое количество ключей с одинаковым хэш-значением");
}
entryOffsetCell.offset += 8;
}
entryOffsetCell.Set(rec.offset);
}
else
{
hashExists[hash] = true;
offsetOnOffsetEntry.Set(offsetsCell.Root.AppendElement(rec.offset));
for (int i = 1; i < CollisionMax; i++)
{
offsetsCell.Root.AppendElement(long.MinValue);
}
}
}
offsetsCell.Flush();
}
public int GetCode(string name)
{
Open(true);
if (Count == 0)
{
return(Int32.MinValue);
}
long newMd5 = BitConverter.ToInt64(md5.ComputeHash(Encoding.UTF8.GetBytes(name)), 0);
if (Count == 0)
{
return(Int32.MinValue);
}
PaEntry ncEntry = nc_cell.Root.Element(0);
List <long> offsets;
object[] code_name;
if (collisionsByMD5.TryGetValue(newMd5, out offsets))
{
foreach (long offset in offsets)
{
ncEntry.offset = offset;
code_name = (object[])ncEntry.Get();
if ((string)code_name[1] == name)
{
return((int)code_name[0]);
}
}
return(int.MinValue);
}
long offsetUni;
if (!offsetByMd5.TryGetValue(newMd5, out offsetUni))
{
return(Int32.MinValue);
}
ncEntry.offset = offsetUni;
code_name = (object[])ncEntry.Get();
return((string)code_name[1] == name ? (int)code_name[0] : Int32.MinValue);
//for (;;index++)
//{
// var md5_offet=(object[])md5_index.Root.Element(index).Get();
// if ((long)md5_offet[0] != newD5) return Int32.MinValue;
// ncEntry.offset = (long) md5_offet[1];
// if ((string)ncEntry.Field(1).Get() == name)
// return (int)ncEntry.Field(0).Get();
//}
//return Int32.MinValue;
}
protected override void AddInIndex(PaEntry entry)
{
int node;
if (entry.Type.Vid == PTypeEnumeration.integer)
{
node = (int)entry.Get();
if (!searchIndex.ContainsKey(node))
{
searchIndex.Add(node, entry.offset);
}
}
else
{
node = (int)entry.Field(0).Get();
if (!searchIndex.ContainsKey(node))
{
searchIndex.Add(node, entry.offset);
}
foreach (var chiledEntry in entry.Field(1).Elements())
{
AddInIndex(chiledEntry);
}
}
}
public IEnumerable <PaEntry> GetAllByKey(long start, long number, Tkey key)
{
if (Table == null || Table.Count() == 0)
{
return(Enumerable.Empty <PaEntry>());
}
PaEntry entry = Table.Element(0);
PaEntry entry1 = entry;
int hkey = HalfProducer(key);
var qqq = index_cell.Root.Elements().Take(100).ToArray();
var candidates = index_cell.Root.BinarySearchAll(start, number, ent =>
{
object[] pair = (object[])ent.Get();
int hk = (int)pair[0];
int cmp = hk.CompareTo(hkey);
if (cmp != 0)
{
return(cmp);
}
long off = (long)pair[1];
entry.offset = off;
return(((IComparable)KeyProducer((object[])entry.Get())).CompareTo(key));
}).ToArray();
return(candidates.Select(ent =>
{
entry1.offset = (long)ent.Field(1).Get();
return entry1;
}));
}
// Доступ к литералу по коду: читается все структурные значение литерала
internal object GetLiteralPValue(long ocode)
{
PaEntry entry = literals.Root.Element(0);
entry.offset = ocode;
return(entry.Get());
}
/// <summary>
/// Получение триплетов из диапазона, соответствующих заданному второму ключу
/// </summary>
/// <param name="dia">Диапазон в индексном массиве. Есть специальные требования к диапазону</param>
/// <param name="key2">Ключ2 по которому фильтруется результарующее множество</param>
/// <returns>Возвращает поток триплетов в объектной форме</returns>
public IEnumerable <object> GetAllInDiap(Diapason dia, Tkey key2)
{
if (dia.IsEmpty())
{
return(Enumerable.Empty <object>());
}
int hkey = Half2Producer(key2);
PaEntry entry = Table.Element(0);
var query1 = index_cell.Root.BinarySearchAll(dia.start, dia.numb, ent =>
{
object[] va = (object[])ent.Get();
int hk = (int)va[2];
int cmp = hk.CompareTo(hkey);
return(cmp);
}).Select(ent => ent.Get())
.Where(va => (int)((object[])va)[2] == hkey);
var query2 = index_cell.Root.ElementValues(dia.start, dia.numb)
.Where(va => (int)((object[])va)[2] == hkey);
IEnumerable <object> query = dia.numb > 30 ? query1 : query2;
return(query
.Select(va =>
{
long off = (long)((object[])va)[0];
entry.offset = off;
return entry.Get();
})
.Where(two => !(bool)((object[])two)[0] && Key2Producer(two).CompareTo(key2) == 0)
.Select(two => ((object[])((object[])two)[1])));
}
public IEnumerable <PaEntry> GetAllByLevel(Func <Tkey, int> LevelFunc)
{
//throw new Exception("GetAllByLevel dois not implemented in DinamicIndexUnique");
PaEntry[] dyna = new PaEntry[0];
if (_unique)
{
dyna = keyent.Where(pair => LevelFunc(pair.Key) == 0).Select(pair => pair.Value).ToArray();
}
else
{
dyna = keyents.Where(pair => LevelFunc(pair.Key) == 0).SelectMany(pair => pair.Value).ToArray();
}
if (Table.Count() == 0)
{
return(dyna);
}
PaEntry ent = Table.Element(0);
return(dyna.Concat(IndexArray.IndexCell.Root.BinarySearchAll(e =>
{
long off = (long)e.Get();
ent.offset = off;
Tkey k = KeyProducer(ent.Get());
return LevelFunc(k);
})));
}
// =============== Частные случаи =================
public PValue GetById(string id)
{
if (table.Count() == 0)
{
return(new PValue(null, Int64.MinValue, null));
}
PaEntry entry = table.Element(0);
PaEntry index_entry = index_cell.Root.BinarySearchFirst(ent =>
{
long off = (long)ent.Get();
entry.offset = off;
return(0 - id.CompareTo((string)entry.Field(i_field).Get()));
});
if (index_entry.offset == Int64.MinValue)
{
return(new PValue(null, Int64.MinValue, null));
}
long cell_offset = (long)index_entry.Get();
entry.offset = cell_offset;
var rec = entry.GetValue();
return(rec);
}
public IEnumerable <object> GetPersonsByName(string firstpartofname)
{
firstpartofname = firstpartofname.ToLower();
PaEntry entry = tab_person.Element(0);
var query = index_person_name.GetAllByLevel(s =>
{
string ss = s.ToLower();
if (ss.StartsWith(firstpartofname))
{
return(0);
}
return(ss.CompareTo(firstpartofname));
});
return(query
.Select(ent =>
{
//long off = (long)ent.Get();
//entry.offset = off;
return entry.Get();
})
.Cast <object[]>()
.Where(pair => !((bool)pair[0]))
.Select(pair => pair[1]));
}
public XElement GetItemByIdBasic(string id, bool addinverse)
{
PaEntry ent = id_index.GetFirst(id);
object[] item = (object[])ent.Get();
XElement res = new XElement("record", new XAttribute("id", item[1]), new XAttribute("type", item[2]),
((object[])item[3]).Cast <object[]>().Select(v3 =>
new XElement("field", new XAttribute("prop", v3[0]),
string.IsNullOrEmpty((string)v3[2])?null: new XAttribute(ONames.xmllang, v3[2]),
v3[1])),
((object[])item[4]).Cast <object[]>().Select(v2 =>
new XElement("direct", new XAttribute("prop", v2[0]),
v2[1])),
null);
if (addinverse)
{
var qu = inverse_index.GetAll(id).Select(en => en.Get()).Cast <object[]>()
.SelectMany(v5 => ((object[])v5[4]).Where(v2 => (string)((object[])v2)[1] == id).Select(v2 =>
new XElement("inverse",
new XAttribute("prop", ((object[])v2)[0]),
new XElement("record", new XAttribute("id", v5[1])))));
res.Add(qu);
}
return(res);
}
internal Literal DecodeDataCode(long lcode)
{
PaEntry lit_ent = literals.Root.Element(0);
lit_ent.offset = lcode;
return(new Literal((object[])lit_ent.Get()));
}
public static void Main1(string[] args)
{
System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
PType tp_rec = new PTypeRecord(
new NamedType("id", new PType(PTypeEnumeration.integer)),
new NamedType("name", new PType(PTypeEnumeration.sstring)),
new NamedType("age", new PType(PTypeEnumeration.integer)));
PaCell cell = new PaCell(new PTypeSequence(tp_rec), path + "people.pac", false);
PType tp_pair = new PTypeRecord(
new NamedType("id", new PType(PTypeEnumeration.integer)),
new NamedType("offset", new PType(PTypeEnumeration.longinteger)));
PaCell cell_index = new PaCell(new PTypeSequence(tp_pair), path + "people_index.pac", false);
int npersons = 1_000_000;
Random rnd = new Random();
Console.WriteLine("Start Task04: Main1");
// Загрузка данных
sw.Restart();
cell.Clear();
cell.Fill(new object[0]);
cell_index.Clear();
cell_index.Fill(new object[0]);
for (int i = 0; i < npersons; i++)
{
int code = npersons - i;
long offset = cell.Root.AppendElement(new object[] { code, "=" + code + "=", rnd.Next(120) });
cell_index.Root.AppendElement(new object[] { code, offset });
}
cell.Flush();
cell_index.Flush();
cell_index.Root.SortByKey <int>(pair => (int)((object[])pair)[0]);
sw.Stop();
Console.WriteLine($"load {npersons} records. duration {sw.ElapsedMilliseconds}");
// Поиск
int key = npersons * 2 / 3;
int ntests = 10000;
sw.Restart();
PaEntry entry = cell.Root.Element(0);
for (int j = 0; j < ntests; j++)
{
key = rnd.Next(npersons);
PaEntry en = cell_index.Root.BinarySearchFirst(ent => ((int)((object[])ent.Get())[0]).CompareTo(key));
object operson = entry.SetOffset((long)((object[])en.Get())[1]).Get();
//Console.WriteLine($"val={tp_rec.Interpret(operson)}");
}
sw.Stop();
Console.WriteLine($"getByKey {ntests} times. duration {sw.ElapsedMilliseconds}");
}
public XElement GetItemById(string id, XElement format)
{
PaEntry ent = id_index.GetFirst(id);
if (ent.offset == Int64.MinValue)
{
return(null);
}
object[] valu = (object[])ent.Get();
XElement record = GetItemF5(valu, format);
return(record);
}
public void Build()
{
index_cell.Clear();
index_cell.Fill(new object[0]);
if (Key1Producer == null)
{
throw new Exception("Err: Key1Producer not defined");
}
if (Key2Producer == null)
{
throw new Exception("Err: Key2Producer not defined");
}
Table.Scan((offset, o) =>
{
var k1 = Key1Producer(o);
var k2 = Key2Producer(o);
int hk2 = Half2Producer(k2);
index_cell.Root.AppendElement(new object[] { offset, k1, hk2 });
return(true);
});
index_cell.Flush();
PaEntry entry = Table.Element(0);
index_cell.Root.SortByKey <GroupElement>(ob =>
new GroupElement((int)((object[])ob)[1], (int)((object[])ob)[2], () =>
{
long off = (long)((object[])ob)[0];
entry.offset = off;
return(Key2Producer(entry.Get()));
}));
// BuildGroupsIndexSpecial:
groups_index.Clear();
groups_index.Fill(new object[0]);
int key1 = Int32.MinValue;
int i = 0; // Теоретически, здесь есть проблема в том, что элементы могут выдаватьс не по индексу.
foreach (object[] va in index_cell.Root.ElementValues())
{
int k1 = (int)va[1];
if (k1 > key1)
{
groups_index.Root.AppendElement(i);
key1 = k1;
}
i++;
}
groups_index.Flush();
//CreateGroupDictionary();
CreateDiscaleDictionary();
}
// Сортировка по дополнительному индексу. Предполагается, что по первичному индексу сортировка уже произведена
public void AdditionalIndex(int second_field)
{
long start = 0;
object current_prime_value = null;
if (table.Count() == 0)
{
return;
}
PaEntry tab_entry = table.Element(0); // Нулевой элемент таблицы
PType second_type = tab_entry.Field(second_field).Type;
long llen = index_cell.Root.Count();
if (llen == 0)
{
return;
}
PaEntry ent = index_cell.Root.Element(0);
PType tel = ent.Type;
int size = tel.HeadSize;
long offset = ent.offset;
for (long ii = 0; ii < llen; ii++)
{
ent.offset = offset;
offset += size;
long tab_offset = (long)ent.Get();
tab_entry.offset = tab_offset;
object prime_value = tab_entry.Field(i_field).Get();
int cmp;
if (current_prime_value == null)
{
current_prime_value = prime_value;
start = ii;
}
else if ((cmp = ((IComparable)prime_value).CompareTo(current_prime_value)) != 0 || ii == llen - 1) // Смена значения первичного ключа
{
long number = ii - start + (cmp == 0 && ii == llen - 1? 1 : 0);
if (number > 1)
{ // нужно сделать сортировку по вторичному ключу
index_cell.Root.SortByKey <string>(start, number, (object v) =>
{
tab_entry.offset = (long)v;
return((string)tab_entry.Field(second_field).Get());
}, null); // Дефолтный компаратор???
}
current_prime_value = prime_value;
start = ii;
}
}
}
// Получение потока всех элементов в отсортированном виде
// Альтернатива - выдача всех записей из таблицы Table
public IEnumerable <object> GetAll()
{
PaEntry entry = Table.Element(0);
return(index_cell.Root.ElementValues()
.Select(va =>
{
long off = (long)((object[])va)[0];
entry.offset = off;
return entry.Get();
})
.Where(two => !(bool)((object[])two)[0]) // Проверка на неуничтоженность
.Select(two => ((object[])((object[])two)[1])));
}
public void CreateDiscaleDictionary()
{
gr_discale = new Dictionary <int, Tuple <Diapason, ScaleInMemory> >();
if (Table.Count() == 0)
{
return;
}
PaEntry entry = Table.Element(0);
long start0 = -1;
long start = -1;
int key = -1;
long sta = -1, num = -1, nscale = -1;
foreach (int ind in groups_index.Root.ElementValues())
{
start = ind;
long off = (long)index_cell.Root.Element(ind).Field(0).Get();
entry.offset = off;
if (key != -1)
{
sta = start0;
num = start - start0;
nscale = num / 32;
ScaleInMemory sim = new ScaleInMemory(index_cell.Root, sta, num, ob => (int)((object[])ob)[2], (int)nscale);
sim.Build();
gr_discale.Add(key, new Tuple <Diapason, ScaleInMemory>(
new Diapason()
{
start = sta, numb = num
}, sim));
}
key = Key1Producer(entry.Get());
start0 = start;
}
sta = start0;
num = index_cell.Root.Count() - start0;
nscale = num / 32;
ScaleInMemory sim0 = new ScaleInMemory(index_cell.Root, sta, num, ob => (int)((object[])ob)[2], (int)nscale);
sim0.Build();
gr_discale.Add(key, new Tuple <Diapason, ScaleInMemory>(
new Diapason()
{
start = sta, numb = num
}, sim0));
}
public XElement GetItemByIdBasic(string id, bool addinverse)
{
PaEntry ent = id_index.GetFirst(id);
object[] item = (object[])ent.Get();
XElement res = new XElement("record", new XAttribute("id", item[1]), new XAttribute("type", item[2]),
((object[])item[3]).Cast <object[]>().Select(v3 =>
new XElement("field", new XAttribute("prop", v3[0]),
string.IsNullOrEmpty((string)v3[2]) ? null : new XAttribute(ONames.xmllang, v3[2]),
v3[1])),
((object[])item[4]).Cast <object[]>().Select(v2 =>
new XElement("direct", new XAttribute("prop", v2[0]),
v2[1])),
null);
if (addinverse)
{
//var qu = inverse_index.GetAll(id)
// .Select(pair =>
// {
// return new XElement("inverse", new XAttribute("prop", pair.stri),
// new XElement("record", new XAttribute("id", pair.entr.Field(1).Get())));
// });
//res.Add(qu);
string predicate = null;
XElement inverse = null;
foreach (var qq in inverse_index.GetAll(id))
{
string pred = qq.stri;
if (pred != predicate)
{
res.Add(inverse);
inverse = new XElement("inverse", new XAttribute("prop", pred));
predicate = pred;
}
string idd = (string)qq.entr.Field(1).Get();
inverse.Add(new XElement("record", new XAttribute("id", idd)));
}
res.Add(inverse);
}
return(res);
}
protected virtual void AddInIndex(PaEntry entry)
{
int node;
if (entry.Type.Vid == PTypeEnumeration.integer)
{
node = (int)entry.Get();
searchIndex.Add(node, entry.offset);
}
else
{
node = (int)entry.Field(0).Get();
searchIndex.Add(node, entry.offset);
foreach (var chiledEntry in entry.Field(1).Elements())
{
AddInIndex(chiledEntry);
}
}
}
public IEnumerable <object> GetAllInDiap(Diapason dia)
{
if (dia.IsEmpty())
{
return(Enumerable.Empty <object>());
}
PaEntry entry = Table.Element(0);
var query2 = index_cell.Root.ElementValues(dia.start, dia.numb)
.Select(va =>
{
long off = (long)((object[])va)[0];
entry.offset = off;
return(entry.Get());
})
.Where(two => !(bool)((object[])two)[0])
.Select(two => ((object[])((object[])two)[1]));
return(query2);
}
public string GetName(int code)
{
Open(true);
if (Count == 0)
{
return(string.Empty);
}
if (code == int.MinValue)
{
return(string.Empty);
}
if (Count <= code)
{
return(string.Empty);
}
ncEntry = encodedCell.Root.Element(0);
ncEntry.offset = (long)c_index.Root.Element(code).Get();
return(staticFreqEncoding.Decode(((object[])ncEntry.Get()).Cast <byte>().ToArray()));
}
public PaEntry GetFirst(Func <PaEntry, int> elementDepth)
{
if (table.Count() == 0)
{
return(new PaEntry(null, Int64.MinValue, null));
}
PaEntry entry = table.Element(0);
PaEntry entry_in_index = index_cell.Root.BinarySearchFirst(ent =>
{
long off = (long)ent.Get();
entry.offset = off;
return(elementDepth(entry.Field(i_field)));
});
if (entry_in_index.offset == Int64.MinValue)
{
return(entry_in_index); // не найден
}
entry.offset = (long)entry_in_index.Get();
return(entry);
}
protected override void AddInIndex(PaEntry entry)
{
int node;
if (entry.Type.Vid == PTypeEnumeration.integer)
{
node = (int) entry.Get();
if (!searchIndex.ContainsKey(node))
searchIndex.Add(node, entry.offset);
}
else
{
node = (int) entry.Field(0).Get();
if (!searchIndex.ContainsKey(node))
searchIndex.Add(node, entry.offset);
foreach (var chiledEntry in entry.Field(1).Elements())
{
AddInIndex(chiledEntry);
}
}
}
private Dictionary <Tkey, List <PaEntry> > keyents = new Dictionary <Tkey, List <PaEntry> >(); // стандартно
public void OnAppendElement(PaEntry entry)
{
Tkey key = KeyProducer(entry.Get());
if (_unique)
{
keyent.Add(key, entry); // Надо бы что-то проверить...
}
else
{
List <PaEntry> entset;
if (keyents.TryGetValue(key, out entset))
{
entset.Add(entry);
}
else
{
keyents.Add(key, Enumerable.Repeat <PaEntry>(entry, 1).ToList());
}
}
}
public IEnumerable <PaEntry> GetAllByKey(long start, long number, Tkey key)
{
if (Table == null || Table.Count() == 0)
{
return(Enumerable.Empty <PaEntry>());
}
PaEntry entry = Table.Element(0);
PaEntry entry1 = entry;
var query = index_cell.Root.BinarySearchAll(start, number, ent =>
{
long off = (long)ent.Get();
entry.offset = off;
return(KeyProducer((object[])entry.Get()).CompareTo(key));
});
return(query.Select(ent =>
{
entry1.offset = (long)ent.Get();
return entry1;
}));
}
internal IEnumerable <Literal> GetDataBySubjPred0(int subj, int pred)
{
var rec_ent = tree_fix.Root.BinarySearchFirst(ent => ((int)ent.Field(0).Get()).CompareTo(subj));
if (rec_ent.IsEmpty)
{
return(Enumerable.Empty <Literal>());
}
var fields = (object[])rec_ent.Field(1).Get();
PaEntry lit_ent = literals.Root.Element(0);
var offsets = fields.Where(pair => (int)((object[])pair)[0] == pred)
.Select(pair => (long)((object[])pair)[1]);
var lits = offsets.Select(off =>
{
lit_ent.offset = off;
object[] pair = (object[])lit_ent.Get();
return(new Literal(pair));
});
return(lits);
}
internal IEnumerable <Literal> GetDataBySubjPred1(int subj, int pred)
{
record rec;
if (!codeRec.TryGetValue(subj, out rec))
{
return(Enumerable.Empty <Literal>());
}
var offsets = rec.fields
.Where(pair => pair.Key == pred)
.Select(pair => pair.Value);
PaEntry lit_ent = literals.Root.Element(0);
var lits = offsets.Select(off =>
{
lit_ent.offset = off;
object[] pair = (object[])lit_ent.Get();
return(new Literal(pair));
});
return(lits);
}
public IEnumerable <PaEntry> GetAllByKey2(long start, long number, Tkey key)
{
if (Table == null || Table.Count() == 0)
{
return(Enumerable.Empty <PaEntry>());
}
PaEntry entry = Table.Element(0);
PaEntry entry1 = entry;
int hkey = HalfProducer(key);
var entries = index_cell.Root.ElementValues(start, number)
.Cast <object[]>()
.TakeWhile(va => (int)va[0] <= hkey)
.Where(va => (int)va[0] == hkey)
.Select(va => { long off = (long)va[1]; entry.offset = off; return(entry); })
.Where(va =>
{
var ka = KeyProducer(entry.Get());
return(ka.CompareTo(key) == 0);
});
return(entries);
}
public XElement GetPortraitByIdIn(int id, string type)
{
PaEntry entry = PaEntry.Empty;
if (type == "person")
{
entry = index_persons_id.GetFirstByKey0(id);
}
else if (type == "photo-doc")
{
entry = index_photo_docs_id.GetFirstByKey0(id);
}
if (entry.IsEmpty)
{
return(null);
}
object[] val = (object[])entry.Get();
var res = new XElement("record", new XAttribute("id", id), new XAttribute("type", type),
new XElement("field", new XAttribute("prop", "name"), (string)val[1]),
null);
if (type == "person")
{
foreach (PaEntry ent in index_reflection_reflected.GetAllByKey(id))
{
object[] reflect_obj = (object[])ent.Get();
int cod = (int)reflect_obj[3];
XElement port = GetPortraitByIdIn(cod, "photo-doc");
res.Add(new XElement("inverse", new XAttribute("prop", "reflected"),
new XElement("record", new XAttribute("id", reflect_obj[0]),
new XElement("field", new XAttribute("prop", "ground"), reflect_obj[1]),
new XElement("direct", new XAttribute("prop", "in-doc"), port),
null)));
}
}
return(res);
}
public void Compress(PaCell dtriplets, PredicatesCoding predicatesCoding)
{
stringsArhive.WriteCell();
PaEntry paEntry = stringsCell.Root.Element(0);
foreach (var dtripletElement in dtriplets.Root.Elements())
{
int predicateCode = (int)dtripletElement.Field(1).Get();
if (predicatesCoding.LiteralVid[predicateCode] == LiteralVidEnumeration.text)
{
PaEntry offsetElement = dtripletElement.Field(2);
long offset = (long)offsetElement.Get();
paEntry.offset = offset;
object[] stri_lang = (object[])paEntry.Get();
offsetElement.Set(
StringsArchedCell.Root.AppendElement(new object[] {
Enumerable.Cast <object>(stringsArhive.Compress((string)stri_lang[0])).ToArray(),
Enumerable.Cast <object>(stringsArhive.Compress((string)stri_lang[01])).ToArray()
}));
}
}
StringsArchedCell.Flush();
}
public static void Main(string[] args)
{
Random rnd = new Random();
string path = @"..\..\..\Databases\";
PType tp_oprops = new PTypeSequence(new PTypeRecord(
new NamedType("subject", new PType(PTypeEnumeration.integer)),
new NamedType("predicate", new PType(PTypeEnumeration.integer)),
new NamedType("object", new PType(PTypeEnumeration.integer))));
PType tp_subject_index = new PTypeSequence(new PType(PTypeEnumeration.longinteger));
PaCell oprops = new PaCell(tp_oprops, path + "opreps.pac", false);
PaCell subject_index = new PaCell(tp_subject_index, path + "subj_ind.pac", false);
Console.WriteLine("Start");
DateTime tt0 = DateTime.Now;
bool toload = true;
if (toload)
{
oprops.Clear();
subject_index.Clear();
oprops.Fill(new object[0]);
subject_index.Fill(new object[0]);
for (int i = 0; i < 100000000; i++)
{
object[] valu = new object[] { rnd.Next(), rnd.Next(), 999 };
long offset = oprops.Root.AppendElement(valu);
subject_index.Root.AppendElement(offset);
if (i % 1000000 == 0)
{
Console.Write(" " + i);
}
}
Console.WriteLine();
int[][] samples =
{
new int[] { 777, 21 },
new int[] { 777, 19 },
new int[] { 777, 22 },
new int[] { 7777777, 21 },
new int[] { 777, 18 }
};
foreach (int[] sa in samples)
{
object[] valu = new object[] { sa[0], sa[1], 999 };
long offset = oprops.Root.AppendElement(valu);
subject_index.Root.AppendElement(offset);
}
oprops.Flush();
subject_index.Flush();
Console.WriteLine("Loading ok. duration=" + (DateTime.Now - tt0).Ticks / 10000L); tt0 = DateTime.Now;
PaEntry.bufferBytes = 400000000;
PaEntry oentry = oprops.Root.Element(0);
//subject_index.Root.SortByKey<int>(off =>
//{
// oentry.offset = (long)off;
// return (int)oentry.Field(0).Get();
//});
subject_index.Root.SortByKey <PairInt>(off =>
{
oentry.offset = (long)off;
object[] triple = (object[])oentry.Get();
return(new PairInt()
{
first = (int)triple[0], second = (int)triple[1]
});
});
Console.WriteLine("Sort ok. duration=" + (DateTime.Now - tt0).Ticks / 10000L); tt0 = DateTime.Now;
}
PaEntry oentry2 = oprops.Root.Element(0);
var query = subject_index.Root.BinarySearchAll(ent =>
{
long off = (long)ent.Get();
oentry2.offset = off;
int sub = (int)oentry2.Field(0).Get();
return(sub.CompareTo(777));
});
Console.WriteLine("BinarySearch ok. duration=" + (DateTime.Now - tt0).Ticks / 10000L); tt0 = DateTime.Now;
foreach (var ent in query)
{
oentry2.offset = (long)ent.Get();
object[] valu = (object[])oentry2.Get();
Console.WriteLine("{0} {1} {2}", valu[0], valu[1], valu[2]);
}
Console.WriteLine("Finish. duration=" + (DateTime.Now - tt0).Ticks / 10000L); tt0 = DateTime.Now;
}
