private DatasetSchema GetSchema(DataSet ds)
{
if (ds == null)
{
return(null);
}
DatasetSchema m = new DatasetSchema();
m.Info = new List <string>();
m.Name = ds.DataSetName;
foreach (DataTable t in ds.Tables)
{
foreach (DataColumn c in t.Columns)
{
m.Info.Add(t.TableName);
m.Info.Add(c.ColumnName);
m.Info.Add(c.DataType.ToString());
}
}
// FEATURE : serialize relations and constraints here
return(m);
}
private DataSet CreateDataset(Dictionary <string, object> reader, Dictionary <string, object> globalTypes)
{
DataSet ds = new DataSet();
ds.EnforceConstraints = false;
ds.BeginInit();
// read dataset schema here
var schema = reader["$schema"];
if (schema is string)
{
TextReader tr = new StringReader((string)schema);
ds.ReadXmlSchema(tr);
}
else
{
DatasetSchema ms = (DatasetSchema)ParseDictionary((Dictionary <string, object>)schema, globalTypes, typeof(DatasetSchema), null);
ds.DataSetName = ms.Name;
for (int i = 0; i < ms.Info.Count; i += 3)
{
if (ds.Tables.Contains(ms.Info[i]) == false)
{
ds.Tables.Add(ms.Info[i]);
}
ds.Tables[ms.Info[i]].Columns.Add(ms.Info[i + 1], Type.GetType(ms.Info[i + 2]));
}
}
foreach (KeyValuePair <string, object> pair in reader)
{
if (pair.Key == "$type" || pair.Key == "$schema")
{
continue;
}
List <object> rows = (List <object>)pair.Value;
if (rows == null)
{
continue;
}
DataTable dt = ds.Tables[pair.Key];
ReadDataTable(rows, dt);
}
ds.EndInit();
return(ds);
}