static void _Nested_UpdateReaders_Employees( IKLink link )
{
var cmd = link.Update( x => x.Employees )
.Where( x => x.CountryId == "es" )
.Column( x => x.CountryId = "es#" );
DEBUG.IndentLine( "\n> Command => {0}", cmd );
foreach( var emp in cmd.ConvertBy( rec => {
EmployeeTable table = new EmployeeTable(); dynamic d = rec;
table.Id = d.Id;
table.FirstName = d.FirstName;
table.LastName = d.LastName;
table.CountryId = d.CountryId;
return table;
} ) ) DEBUG.WriteLine( "\n> Employee => {0}", emp );
cmd.Dispose();
DEBUG.Unindent();
}
public static void Nested_UpdateReaders( IKLink link )
{
Console.WriteLine( "\n===== Nested Updates..." );
KCommandRaw raw = link.Raw();
Console.WriteLine( "\n== SUSPENDING THE CONSTRAINTS..." );
raw.Set( "ALTER TABLE Countries NOCHECK CONSTRAINT ALL" ); raw.Execute();
raw.Set( "ALTER TABLE Employees NOCHECK CONSTRAINT ALL" ); raw.Execute();
var cmd = link.Update( x => x.Countries )
.Where( x => x.Id == "es" )
.Column( x => x.Id = "es#" );
Console.WriteLine( "\n> Command => {0}", cmd );
foreach( var ctry in cmd.ConvertBy( rec => {
CountryTable table = new CountryTable(); dynamic d = rec;
table.Id = d.Id;
table.Name = d.Name;
table.RegionId = d.RegionId;
_Nested_UpdateReaders_Employees( link );
return table;
} ) ) Console.WriteLine( "\n> Country => {0}", ctry );
cmd.Dispose();
Console.WriteLine( "\n== REACTIVATING THE CONSTRAINTS..." );
raw.Set( "ALTER TABLE Countries CHECK CONSTRAINT ALL" ); raw.Execute();
raw.Set( "ALTER TABLE Employees CHECK CONSTRAINT ALL" ); raw.Execute();
}
public static void Test_Scenario( IKLink link )
{
Console.WriteLine( "\n===== Cleaning the scenario ...[Enter]" ); Console.ReadLine();
link.Delete( x => x.Employees ).Execute();
link.Delete( x => x.Countries ).Execute();
link.Delete( x => x.Regions ).Execute();
Console.WriteLine( "\n===== Persisting the hierarchy through a leaf object...[Enter]" ); Console.ReadLine();
Region rEMEA = new Region() { Id = "200", Name = "EMEA" };
Region rNE = new Region() { Id = "210", Name = "North Europe", Parent = rEMEA };
Country cUK = new Country() { Id = "uk", Name = "United Kingdom", Region = rNE };
Employee eM = new Employee() { Id = "M", Country = cUK, FirstName = "M" };
Employee e007 = new Employee() { Id = "007", Country = cUK, FirstName = "James", LastName = "Bond", Manager = eM };
e007.BirthDate = new CalendarDate( 1940, 1, 1 );
e007.Active = true;
e007.JoinDate = new CalendarDate( 1965, 1, 1 );
e007.StartTime = new ClockTime( 8, 0, 0 );
e007.Photo = new byte[] { 0, 0, 7 };
e007 = link.Insert( e007 ).Execute();
Console.WriteLine( "\n>> Region EMEA: {0}", rEMEA );
Console.WriteLine( "\n>> Region North Europe: {0}", rNE );
Console.WriteLine( "\n>> Country UK: {0}", cUK );
Console.WriteLine( "\n>> Employee M: {0}", eM );
Console.WriteLine( "\n>> Employee 007: {0}", e007 );
Console.WriteLine( "\n===== Creating another set ...[Enter]" ); Console.ReadLine();
Region rAMS = new Region() { Id = "100", Name = "Americas" }; link.Insert( rAMS ).Execute();
Region rNA = new Region() { Id = "110", Name = "North America", Parent = rAMS }; link.Insert( rNA ).Execute();
Console.WriteLine( "\n> Inserted theatre: {0}", rAMS );
Country cUSA = new Country() { Id = "us", Name = "United States of America", Region = rNA };
Employee e009 = new Employee() { Id = "009", FirstName = "John", LastName = "Smith", Country = cUSA };
e009 = link.Insert( e009 ).Execute();
Console.WriteLine( "\n> Inserted spy: {0}", e009 );
Console.WriteLine( "\n===== An update with change in the key columns ...[Enter]" ); Console.ReadLine();
e009.Country = cUK; e009 = link.Update( e009 ).Execute();
cUSA.Employees.Remove( e009 ); link.Update( cUSA ).Execute();
Console.WriteLine( "\n> Updated spy: {0}", e009 );
Console.WriteLine( "\n>> UK Employees: {0}", TypeHelper.ToString( cUK.Employees ) );
Console.WriteLine( "\n>> USA Employees: {0}", TypeHelper.ToString( cUSA.Employees ) );
Console.WriteLine( "\n===== Removing by cascading deletion ...[Enter]" ); Console.ReadLine();
link.Delete( rEMEA ).Execute();
link.Delete( rAMS).Execute();
}
public static void Update_Enumerate( IKLink link )
{
Console.WriteLine( "\n===== Update enumerating the results..." );
var cmd = link.Update( x => x.Employees )
.Where( x => x.FirstName >= "E" )
.Column(
x => x.ManagerId = null,
x => x.LastName = x.LastName + "_1",
x => x.Photo = new byte[] { 99, 98, 97, 96 }
);
Console.WriteLine( "\n> Command => {0}", cmd );
foreach( var obj in cmd ) Console.WriteLine( "\n> Record => {0}", obj );
cmd.Dispose();
}
public static void Test_Update( IKLink link, Region reg )
{
Console.WriteLine( "\n===== Updating a region ..." ); Console.ReadLine();
reg.Name = "New Name";
reg = link.Update( reg ).Execute();
Console.WriteLine( "\n>> Updated Region: {0}", reg );
}