public override Resultset Get(QueryContext queryContext, object[] parameters)
{
DataTable dt = RowType.CreateSchemaTable();
DataRow r = dt.NewRow();
r["ColumnName"] = "Stream";
r["ColumnOrdinal"] = 0;
r["DataType"] = typeof(System.Object);
dt.Rows.Add(r);
EnumeratorProcessingContext context = null;
if (FileName.IndexOfAny(new char[] { '?', '*' }) != -1)
context = new EnumeratorProcessingContext(null);
Resultset rs = new Resultset(new RowType(dt), context);
if (context == null)
{
Stream stm = new FileStream(FileName, FileMode.Open, FileAccess.Read);
Row row = rs.NewRow();
row.SetObject(0, stm);
rs.Enqueue(row);
}
else
{
MultiFile = true;
context.Iterator = SearchLoop(queryContext, rs);
}
return rs;
}
public override Resultset Get(QueryContext queryContext, object[] parameters)
{
Resultset rs1 = null;
Resultset rs2 = null;
Iterator.Invoke(new Action[] {
() => rs1 = ChildNodes[0].Get(queryContext, parameters),
() => rs2 = ChildNodes[1].Get(queryContext, parameters)
});
DataTable dt1 = rs1.RowType.GetSchemaTable();
DataTable dt2 = rs2.RowType.GetSchemaTable();
foreach (DataRow r2 in dt2.Select())
{
DataRow r1 = dt1.NewRow();
r1.ItemArray = r2.ItemArray;
dt1.Rows.Add(r1);
}
EnumeratorProcessingContext context = new EnumeratorProcessingContext(new Resultset[] { rs1, rs2 });
Resultset rs = new Resultset(new RowType(dt1), context);
context.Iterator = DataIterator(rs, rs1, rs2);
return rs;
}
public override Resultset Get(QueryContext queryContext, object[] parameters)
{
Resultset rs1 = ChildNodes[0].Get(queryContext, parameters);
if (rs1.Begin != null)
{
if (ChildNodes[0] is FlatFileAccessor &&
((FlatFileAccessor)ChildNodes[0]).MultiFile)
{
EnumeratorProcessingContext context = new EnumeratorProcessingContext(null);
Resultset rs = new Resultset(RowType.CreateContainerType(typeof(Resultset)), context);
context.Iterator = NextFile(rs, rs1, queryContext);
return rs;
}
else
{
string fileName;
Row row = rs1.Dequeue();
Stream stream = (Stream)row.GetObject(0);
return CreateResultset(stream, out fileName, queryContext);
}
}
else
return new Resultset(RowType.CreateContainerType(typeof(Resultset)), null);
}
