public MetadataRepository(DataSet schema)
{
RuntimeID = Guid.NewGuid();
VersionNumber = 0;
m_tablesLookup = new Dictionary <string, int>();
m_tables = new List <MetadataTable>();
m_isReadOnly = false;
//-- Fill the schema
//-------------------------------------
foreach (DataTable table in schema.Tables)
{
var columns = new List <MetadataColumn>();
foreach (DataColumn c in table.Columns)
{
columns.Add(new MetadataColumn(c.ColumnName, SttpValueTypeCodec.FromType(c.DataType)));
}
m_tables.Add(new MetadataTable(table.TableName, columns));
m_tablesLookup[table.TableName] = m_tables.Count - 1;
}
MetadataSchema = new List <MetadataSchemaTable>();
foreach (var table in m_tables)
{
var t = new MetadataSchemaTable();
t.TableName = table.TableName;
t.LastModifiedVersionNumber = table.LastModifiedVersionNumber;
foreach (var col in table.Columns)
{
t.Columns.Add(col);
}
MetadataSchema.Add(t);
}
}
public DataTable ToTable()
{
DataTable tbl = new DataTable();
foreach (var column in Columns)
{
tbl.Columns.Add(column.Name, SttpValueTypeCodec.ToType(column.TypeCode));
}
object[] list = new object[Columns.Count];
foreach (var row in Rows)
{
for (int x = 0; x < list.Length; x++)
{
list[x] = row[x].ToNativeType;
}
tbl.Rows.Add(list);
}
return(tbl);
}
public MetadataTable MergeDataSets(DbDataReader table, long newSequenceNumber)
{
List <MetadataRow> newRows = new List <MetadataRow>();
int fieldCount = table.FieldCount;
if (Columns.Count != fieldCount)
{
throw new Exception("Schema has changed, Cannot fill data set.");
}
for (var x = 0; x < fieldCount; x++)
{
if (Columns[x].Name != table.GetName(x))
{
throw new Exception("Schema has changed, Cannot fill data set.");
}
if (Columns[x].TypeCode != SttpValueTypeCodec.FromType(table.GetFieldType(x)))
{
throw new Exception("Schema has changed, Cannot fill data set.");
}
}
object[] row = new object[fieldCount];
while (table.Read())
{
if (table.GetValues(row) != fieldCount)
{
throw new Exception("Field count did not match");
}
List <CtpObject> values = new List <CtpObject>();
values.AddRange(row.Select(CtpObject.FromObject));
newRows.Add(new MetadataRow(values));
}
return(new MetadataTable(this, newRows, newSequenceNumber));
}
