public void Remove(Column c) {
mItems.Remove(c);
}
public void Add(Column c) {
mItems.Add(c);
}
public ColumnDiff Compare(Column c) {
return new ColumnDiff(this, c);
}
public ColumnDiff(Column target, Column source) {
Source = source;
Target = target;
}
private static void LoadColumnsBase(IDataReader dr, List<Table> tables) {
Table table = null;
while (dr.Read()) {
var c = new Column {
Name = (string) dr["COLUMN_NAME"],
Type = (string) dr["DATA_TYPE"],
IsNullable = (string) dr["IS_NULLABLE"] == "YES",
Position = (int) dr["ORDINAL_POSITION"],
IsRowGuidCol = (string) dr["IS_ROW_GUID_COL"] == "YES",
Collation = dr["COLLATION_NAME"] == DBNull.Value ? string.Empty : dr["COLLATION_NAME"].ToString()
};
switch (c.Type) {
case "binary":
case "char":
case "nchar":
case "nvarchar":
case "varbinary":
case "varchar":
c.Length = (int) dr["CHARACTER_MAXIMUM_LENGTH"];
break;
case "decimal":
case "numeric":
c.Precision = (byte) dr["NUMERIC_PRECISION"];
c.Scale = (int) dr["NUMERIC_SCALE"];
break;
}
if (table == null || table.Name != (string) dr["TABLE_NAME"] || table.Owner != (string) dr["TABLE_SCHEMA"])
// only do a lookup if the table we have isn't already the relevant one
table = FindTableBase(tables, (string) dr["TABLE_NAME"], (string) dr["TABLE_SCHEMA"]);
table.Columns.Add(c);
}
}
public void TestImportAndExportIgnoringComputedData() {
var t = new Table("dbo", "Status");
t.Columns.Add(new Column("id", "int", false, null));
t.Columns.Add(new Column("code", "char", 1, false, null));
t.Columns.Add(new Column("description", "varchar", 20, false, null));
var computedCol = new Column("computed", "varchar", false, null);
computedCol.ComputedDefinition = "code + ' : ' + description";
t.Columns.Add(computedCol);
t.Columns.Find("id").Identity = new Identity(1, 1);
t.AddConstraint(new Constraint("PK_Status", "PRIMARY KEY", "id"));
var conn = TestHelper.GetConnString("TESTDB");
DBHelper.DropDb(conn);
DBHelper.CreateDb(conn);
SqlConnection.ClearAllPools();
DBHelper.ExecBatchSql(conn, t.ScriptCreate());
var dataIn =
@"1 R Ready
2 P Processing
3 F Frozen
";
var filename = Path.GetTempFileName();
var writer = File.AppendText(filename);
writer.Write(dataIn);
writer.Flush();
writer.Close();
try {
t.ImportData(conn, filename);
var sw = new StringWriter();
t.ExportData(conn, sw);
Assert.AreEqual(dataIn, sw.ToString());
} finally {
File.Delete(filename);
}
}
