public static void CLRDemo(SqlXml metadata)
{
// Deserialize the report
ReportSerializer serializer = new ReportSerializer();
XmlReader reader = metadata.CreateReader();
RDL.Report report = (RDL.Report)serializer.Deserialize(reader);
// Generate the table schema
DataTable table = GenerateSchema(report);
// Generate preview results
GeneratePreviewData(table, report);
if (!SqlContext.IsAvailable)
{
return;
}
SqlDataRecord record = TableRowToSqlDataRecord(table);
SqlContext.Pipe.SendResultsStart(record);
foreach (DataRow row in table.Rows)
{
record.SetValues(row.ItemArray);
SqlContext.Pipe.SendResultsRow(record);
}
SqlContext.Pipe.SendResultsEnd();
return;
}
/// <summary>
/// Generate the schema for the resultset
/// </summary>
/// <param name="metadata">The Metadata dataset</param>
/// <returns>DataTable with columns matching the metadata</returns>
private static DataTable GenerateSchema(RDL.Report report)
{
DataTable table = new DataTable();
// reference the main dataset
RDL.DataSet ds = report.DataSets[0];
foreach (RDL.Field f in ds.Fields)
{
table.Columns.Add(f.Name, f.TypeName);
}
return(table);
}
/// <summary>
/// Generate preview data
/// </summary>
/// <param name="results">An empty table to hold results</param>
/// <returns>DataTable with columns matching the metadata</returns>
private static void GeneratePreviewData(DataTable table, RDL.Report report)
{
Random rand = new Random();
for (int i = 0; i < MAX_PREVIEW_ROWS; i++)
{
DataRow row = table.NewRow();
for (int j = 0; j < table.Columns.Count; j++)
{
string fieldName = table.Columns[j].ColumnName;
// report column
switch (table.Columns[j].DataType.ToString())
{
case "System.String":
{
switch (table.Columns[j].ColumnName.ToLower())
{
case "entity": row[j] = table.Columns[j].ColumnName + " " + i % 2; break;
case "item": row[j] = table.Columns[j].ColumnName + " " + i % 2; break;
default: row[j] = table.Columns[j].ColumnName + "_" + i.ToString(); break;
}
break;
}
case "System.Decimal": row[j] = (i % 5 == 0 ? -1 : 1) * 100000 * rand.NextDouble(); break;
case "System.Double": row[j] = (i % 5 == 0 ? -1 : 1) * 100000 * rand.NextDouble(); break;
case "System.Int32": row[j] = (i % 5 == 0 ? -1 : 1) * rand.Next(10000); break;
}
}
table.Rows.Add(row);
}
}
