public override G.IEnumerable <long> All(EvalEnv ee)
{
for (int i = 0; i < List.Length; i += 1)
{
yield return(List[i].Eval(ee).L);
}
}
public IdCopy(IdSet x, EvalEnv ee)
{
foreach (long id in x.All(ee))
{
Copy.Add(id);
}
}
public void ExecDelete(Exp where, bool[] used, EvalEnv ee)
{
Value [] tr = new Value[Cols.Count];
ee.Row = tr;
IdSet IdSet = where == null ? null : where.GetIdSet(this, ee);
if (IdSet == null)
{
IdSet = new UpTo(RowCount);
}
else
{
IdSet = new IdCopy(IdSet, ee); // Need to take a copy of the id values, as indexes may be updated.
}
foreach (long id in IdSet.All(ee))
{
if (Get(id, tr, null))
{
if (where == null || (where.Eval(ee).B))
{
Delete(id, tr);
}
}
}
}
public override G.IEnumerable <long> All(EvalEnv ee)
{
foreach (long id in Copy)
{
yield return(id);
}
}
// Higher level functions.
public long Insert(TableExpression te, int[] colIx, int idCol, EvalEnv ee)
{
var ins = new Inserter(this, colIx, idCol, te);
te.FetchTo(ins, ee);
return(ins.LastIdInserted);
}
public override G.IEnumerable <long> All(EvalEnv ee)
{
V = K.Eval(ee);
Type = K.Type;
foreach (IndexFileRecord r in F.From(Compare, Op <= Token.LessEqual /* Op == Token.Less || Op == Token.LessEqual */))
{
if (Op == Token.Equal)
{
switch (K.Type)
{
case DataType.Bigint: if (r.Col[0].L != V.L)
{
yield break;
}
break;
case DataType.Binary: if (Util.Compare((byte[])r.Col[0]._O, (byte[])V._O) != 0)
{
yield break;
}
break;
case DataType.String: if (((string)r.Col[0]._O) != (string)V._O)
{
yield break;
}
break;
default: throw new System.Exception("Type error");
}
}
yield return(r.Col[F.Inf.KeyCount - 1].L);
}
}
public override G.IEnumerable <long> All(EvalEnv ee)
{
for (int i = 1; i <= N; i += 1)
{
yield return(i);
}
}
public override G.IEnumerable <long> All(EvalEnv ee)
{
Value [] row = new Value[1];
foreach (bool b in TE.GetAll(row, new int[] { 0 }, ee))
{
yield return(row[0].L);
}
}
public override G.IEnumerable <long> All(EvalEnv ee)
{
G.SortedSet <long> copy = new G.SortedSet <long>();
foreach (long id in X.All(ee))
{
copy.Add(id);
}
foreach (long id in copy)
{
yield return(id);
}
}
public override G.IEnumerable <long> All(EvalEnv ee)
{
V = K(ee);
foreach (IndexFileRecord r in F.From(Compare, Op <= Token.LessEqual))
{
if (Op == Token.Equal && !Util.Equals(r.Col[0], V, Type))
{
yield break;
}
yield return(r.Col[F.Inf.KeyCount - 1].L);
}
}
public override G.IEnumerable <long> All(EvalEnv ee)
{
StoredTable t = S.Table;
G.List <Value[]> rows = t.Rows;
for (int i = 0; i < rows.Count; i += 1)
{
Value[] row = rows[i];
yield return(row[0].L);
}
}
public override G.IEnumerable <bool> GetAll(Value[] row, int [] cols, EvalEnv ee)
{
long n = RowCount;
for (long id = 1; id <= n; id += 1)
{
if (Get(id, row, cols))
{
yield return(true);
}
}
}
public void ExecUpdate(Assign[] a, Exp where, bool [] used, int idCol, EvalEnv ee)
{
Value [] tr = new Value[Cols.Count];
Value [] nr = new Value[Cols.Count]; // The new row.
ee.Row = tr;
IdSet IdSet = where == null ? null : where.GetIdSet(this, ee);
if (IdSet == null)
{
IdSet = new UpTo(RowCount);
}
else
{
IdSet = new IdCopy(IdSet, ee); // Need to take a copy of the id values if an index is used.
}
foreach (long id in IdSet.All(ee))
{
if (Get(id, tr, null))
{
for (int i = 0; i < nr.Length; i += 1)
{
nr[i] = tr[i];
}
if (where == null || (where.Eval(ee).B))
{
for (int i = 0; i < a.Length; i += 1)
{
int ix = a[i].Lhs.ColIx;
nr[ix] = a[i].Rhs.Eval(ee);
}
if (idCol >= 0 && nr[idCol].L != id)
{
Delete(id, tr);
Insert(nr, idCol);
}
else
{
Update(id, tr, nr);
}
}
}
}
}
public override G.IEnumerable <long> All(EvalEnv ee)
{
foreach (Value v in Values)
{
DataType t = Ix.Inf.Types[0];
int idCol = Ix.Inf.KeyCount - 1;
var start = new ValueStart(v, t);
foreach (IndexFileRecord r in Ix.From(start.Compare, false))
{
if (Util.Compare(v, r.Col[0], t) == 0)
{
yield return(r.Col[idCol].L);
}
else
{
break;
}
}
}
}
public void Delete(Exp.DB where, IdSet ids, EvalEnv ee)
{
Value [] tr = new Value[CI.Count];
ee.Row = tr;
if (ids == null)
{
ids = new UpTo(RowCount);
}
else
{
ids = new IdCopy(ids);
}
foreach (long id in ids.All(ee))
{
if (Get(id, tr, AllCols) && where (ee))
{
Delete(id, tr);
}
}
}
public override G.IEnumerable <long> All(EvalEnv ee)
{
Value v = X.Eval(ee);
yield return(v.L);
}
public void Update(int [] cols, Exp.DV [] dvs, Exp.DB where, int idCol, IdSet ids, EvalEnv ee)
{
Value [] tr = new Value[CI.Count]; // The old row.
Value [] nr = new Value[CI.Count]; // The new row.
ee.Row = tr;
if (ids == null)
{
ids = new UpTo(RowCount);
}
else
{
ids = new IdCopy(ids); // Need to take a copy of the id values if an index is used.
}
foreach (long id in ids.All(ee))
{
if (Get(id, tr, AllCols) && where (ee))
{
// Initialise new row as copy of old row.
for (int i = 0; i < nr.Length; i += 1)
{
nr[i] = tr[i];
}
// Update the new row.
for (int i = 0; i < cols.Length; i += 1)
{
nr[cols [i]] = dvs[i](ee);
}
if (idCol >= 0 && nr[idCol].L != id) // Row Id is changing.
{
Delete(id, tr);
Insert(nr, idCol);
}
else
{
Update(id, tr, nr);
}
}
}
}
public override G.IEnumerable <long> All(EvalEnv ee)
{
yield return(X(ee));
}
public TableExpressionIdSet(TableExpression te, EvalEnv ee)
{
te.FetchTo(S, ee);
}
public ExpListIdSet(Exp[] list, EvalEnv e)
{
List = list;
}
public abstract G.IEnumerable <long> All(EvalEnv ee);
