//////////////////////////////////////////////////////////////////////////////
public static Obj Copy(ColumnBase[] columns, bool flipCols)
{
int totalSize = 0;
for (int i = 0; i < columns.Length; i++)
{
totalSize += columns[i].count;
}
if (totalSize == 0)
{
return(EmptyRelObj.singleton);
}
Obj[] objs1 = new Obj[totalSize];
Obj[] objs2 = new Obj[totalSize];
int next = 0;
for (int i = 0; i < columns.Length; i++)
{
ColumnBase col = columns[i];
if (col is IntColumn)
{
IntColumn intCol = (IntColumn)col;
IntColumn.Iter it = intCol.GetIter();
while (!it.Done())
{
objs1[next] = intCol.mapper(it.GetIdx());
objs2[next] = IntObj.Get(it.GetValue());
next++;
it.Next();
}
}
else if (col is FloatColumn)
{
FloatColumn floatCol = (FloatColumn)col;
FloatColumn.Iter it = floatCol.GetIter();
while (!it.Done())
{
objs1[next] = floatCol.mapper(it.GetIdx());
objs2[next] = new FloatObj(it.GetValue());
next++;
it.Next();
}
}
else
{
ObjColumn objCol = (ObjColumn)col;
ObjColumn.Iter it = objCol.GetIter();
while (!it.Done())
{
objs1[next] = objCol.mapper(it.GetIdx());
objs2[next] = it.GetValue();
next++;
it.Next();
}
}
}
Debug.Assert(next == totalSize);
if (flipCols)
{
Obj[] tmp = objs1;
objs1 = objs2;
objs2 = tmp;
}
return(Builder.CreateBinRel(objs1, objs2));
}
//////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////
public static void Write(DataWriter writer, int fieldSymbId, ColumnBase[] columns, bool flipCols, int indentation, bool indentFirstLine, bool writeSeparator)
{
string baseWs = new string(Array.Repeat(' ', indentation));
string entryWs = new string(Array.Repeat(' ', indentation + 2));
int count = 0;
for (int i = 0; i < columns.Length; i++)
{
count += columns[i].Size();
}
if (indentFirstLine)
{
writer.Write(baseWs);
}
writer.Write(SymbObj.IdxToStr(fieldSymbId));
writer.Write(": [");
if (count > 0)
{
writer.Write("\n");
int written = 0;
for (int i = 0; i < columns.Length; i++)
{
ColumnBase col = columns[i];
SurrObjMapper mapper = col.mapper;
if (col is IntColumn)
{
IntColumn intCol = (IntColumn)col;
IntColumn.Iter it = intCol.GetIter();
while (!it.Done())
{
writer.Write(entryWs);
Obj key = mapper(it.GetIdx());
long value = it.GetValue();
if (flipCols)
{
writer.Write(value);
writer.Write(", ");
ObjPrinter.PrintNoFlush(key, writer);
written++;
writer.Write(written == 1 | written < count ? ";\n" : "\n");
}
else
{
ObjPrinter.PrintNoFlush(key, writer);
writer.Write(" -> ");
writer.Write(value);
written++;
writer.Write(written < count ? ",\n" : "\n");
}
it.Next();
}
}
else if (col is FloatColumn)
{
FloatColumn floatCol = (FloatColumn)col;
FloatColumn.Iter it = floatCol.GetIter();
while (!it.Done())
{
writer.Write(entryWs);
Obj key = mapper(it.GetIdx());
double value = it.GetValue();
if (flipCols)
{
writer.Write(FloatObjPrinter.Print(value));
writer.Write(", ");
ObjPrinter.PrintNoFlush(key, writer);
written++;
writer.Write(written == 1 | written < count ? ";\n" : "\n");
}
else
{
ObjPrinter.PrintNoFlush(key, writer);
writer.Write(" -> ");
writer.Write(FloatObjPrinter.Print(value));
written++;
writer.Write(written < count ? ",\n" : "\n");
}
it.Next();
}
}
else
{
ObjColumn objCol = (ObjColumn)col;
ObjColumn.Iter it = objCol.GetIter();
while (!it.Done())
{
writer.Write(entryWs);
Obj key = mapper(it.GetIdx());
Obj value = it.GetValue();
if (flipCols)
{
ObjPrinter.PrintNoFlush(value, writer);
writer.Write(", ");
ObjPrinter.PrintNoFlush(key, writer);
written++;
writer.Write(written == 1 | written < count ? ";\n" : "\n");
}
else
{
ObjPrinter.PrintNoFlush(key, writer);
writer.Write(" -> ");
ObjPrinter.PrintNoFlush(value, writer);
written++;
writer.Write(written < count ? ",\n" : "\n");
}
it.Next();
}
}
}
Debug.Assert(written == count);
writer.Write(baseWs);
}
writer.Write(writeSeparator ? "],\n" : "]\n");
}