public void UnregisterIndex(IIndexCommon index)
{
indexes.Remove(index);
}
public void RegisterIndex(IIndexCommon index)
{
indexes.Add(index);
}
public void RegisterIndex(IIndexCommon index)
{
indexes.Add(index);
}
public void UnregisterIndex(IIndexCommon index)
{
indexes.Remove(index);
}
public TableSimple(PType tp_elem, int[] indexcolumnnoms, Func <Stream> getstream)
{
this.tp_element = tp_elem;
this.getstream = getstream;
this.cnoms = indexcolumnnoms;
table = new TableView(getstream(), tp_elem);
if (tp_element.Vid != PTypeEnumeration.record)
{
throw new Exception("Err in TableRelational Indexes: Type of element is not record");
}
allindexes = new IIndexCommon[cnoms.Length];
PTypeRecord tp_r = (PTypeRecord)tp_element;
int i = 0;
foreach (int nom in cnoms)
{
if (nom < 0 || nom > tp_r.Fields.Length)
{
throw new Exception("Err in TableRelational Indexes: element number is out of range");
}
PType tp = tp_r.Fields[nom].Type;
if (tp.Vid == PTypeEnumeration.integer)
{
Func <object, int> keyproducer = v => (int)((object[])((object[])v)[1])[nom];
IndexKeyImmutable <int> ind_arr = new IndexKeyImmutable <int>(getstream())
{
Table = table,
KeyProducer = keyproducer,
Scale = null
};
ind_arr.Scale = new ScaleCell(getstream())
{
IndexCell = ind_arr.IndexCell
};
IndexDynamic <int, IndexKeyImmutable <int> > index = new IndexDynamic <int, IndexKeyImmutable <int> >(true, ind_arr);
allindexes[i] = index;
table.RegisterIndex(index);
}
else if (tp.Vid == PTypeEnumeration.sstring)
{
IndexHalfkeyImmutable <string> index_arr = new IndexHalfkeyImmutable <string>(getstream())
{
Table = table,
KeyProducer = v => (string)((object[])((object[])v)[1])[nom],
HalfProducer = v => Hashfunctions.HashRot13(v)
};
index_arr.Scale = new ScaleCell(getstream())
{
IndexCell = index_arr.IndexCell
};
IndexDynamic <string, IndexHalfkeyImmutable <string> > index =
new IndexDynamic <string, IndexHalfkeyImmutable <string> >(false, index_arr);
allindexes[i] = index;
table.RegisterIndex(index);
}
else
{
throw new Exception($"Err: vid {tp.Vid} is not implemented in TableRelational Indexes");
}
i++;
}
}
