static public string Run(string[] args)
{
StringBuilder sb = new StringBuilder();
Storage storage = StorageFactory.Instance.CreateStorage();
storage.Open("testlinq.dbs");
QueryListener listener = new QueryListener();
storage.Listener = listener;
Database db = new Database(storage);
int n;
Customer customer1 = new Customer();
customer1.name = "Age Soft";
customer1.address = "MT, Freen Valley, 5";
customer1.phone = "111-1111";
customer1.contactPerson = "John Smith";
customer1.vip = true;
db.AddRecord(customer1);
Customer customer2 = new Customer();
customer2.name = "WebAlta";
customer2.address = "Moscow, Russia, Kolomenskay nab.,2";
customer2.phone = "222-22222";
customer2.contactPerson = "Piter Volokov";
db.AddRecord(customer2);
BugReport bug1 = new BugReport();
bug1.issuedBy = customer1;
bug1.priority = BugReport.Priority.Low;
bug1.description = "It doesn't work";
bug1.version = 1.03M;
db.AddRecord(bug1);
BugReport bug2 = new BugReport();
bug2.issuedBy = customer2;
bug2.priority = BugReport.Priority.High;
bug2.description = "Something is definitely wrong";
bug2.version = 2.01M;
db.AddRecord(bug2);
sb.AppendLine("Search customer by name");
n = 0;
foreach (Customer c in db.Select <Customer>(c => c.name == "WebAlta"))
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
sb.AppendLine("Locate customers issued high priority bugs for version 2.0");
n = 0;
var query1 = from bug in db.GetTable <BugReport>()
where bug.priority >= BugReport.Priority.High && bug.version >= 2.0M
orderby bug.priority
select bug.issuedBy;
foreach (var c in query1)
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
sb.AppendLine("Select customer by name and contact person");
n = 0;
string name = "Age Soft";
string person = "John Smith";
var query2 = from c in db.GetTable <Customer>()
where name == c.name && c.contactPerson == person
select c;
foreach (var c in query2)
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
name = "WebAlta";
person = "Piter Volokov";
n = 0;
foreach (var c in query2)
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
Debug.Assert(listener.nSeqSearches == 0);
sb.AppendLine("Select with index join");
n = 0;
foreach (BugReport bug in db.Select <BugReport>(bug => bug.issuedBy.name == "WebAlta" || bug.issuedBy.name == "Age Soft"))
{
sb.AppendLine(bug.ToString());
n += 1;
}
Debug.Assert(n == 2);
sb.AppendLine("Select with index prefix search");
n = 0;
foreach (Customer customer in db.Select <Customer>(customer => customer.phone == "222-22222" && customer.name.StartsWith("Web")))
{
sb.AppendLine(customer.ToString());
n += 1;
}
Debug.Assert(n == 1);
Debug.Assert(listener.nSeqSearches == 0);
sb.AppendLine("Select without search condition");
n = 0;
var query3 = from bug in db.GetTable <BugReport>()
orderby bug.priority
select bug;
foreach (var b in query3)
{
sb.AppendLine(b.ToString());
n += 1;
}
Debug.Assert(n == 2);
sb.AppendLine("Select using sequential search");
n = 0;
var query4 = from bug in db.GetTable <BugReport>()
where bug.version >= 2.0M
select bug;
foreach (var b in query4)
{
sb.AppendLine(b.ToString());
n += 1;
}
Debug.Assert(n == 1);
n = 0;
var query5 = from bug in db.GetTable <BugReport>()
where bug.issuedBy == customer1
select bug;
foreach (var b in query5)
{
sb.AppendLine(b.ToString());
n += 1;
}
Debug.Assert(n == 1);
n = 0;
List <Customer> customers = new List <Customer>();
customers.Add(customer1);
customers.Add(customer2);
var query6 = from bug in db.GetTable <BugReport>()
where customers.Contains(bug.issuedBy)
select bug;
foreach (var b in query6)
{
sb.AppendLine(b.ToString());
n += 1;
}
Debug.Assert(n == 2);
n = 0;
foreach (Customer c in db.Select <Customer>(c => c.name.CompareTo("A") >= 0))
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 2);
n = 0;
foreach (Customer c in db.Select <Customer>(c => String.Compare(c.name, "webalta", StringComparison.CurrentCultureIgnoreCase) == 0))
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
n = 0;
foreach (Customer c in db.Select <Customer>(c => c.vip))
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
n = 0;
foreach (Customer c in db.Select <Customer>(c => !c.vip))
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
Debug.Assert(listener.nSeqSearches == 1);
storage.Close();
return(sb.ToString());
}
static public string Run(string[] args)
{
StringBuilder sb = new StringBuilder();
Storage storage = StorageFactory.Instance.CreateStorage();
storage.Open("testlinq.dbs");
QueryListener listener = new QueryListener();
storage.Listener = listener;
Database db = new Database(storage);
int n;
Customer customer1 = new Customer();
customer1.name = "Age Soft";
customer1.address = "MT, Freen Valley, 5";
customer1.phone = "111-1111";
customer1.contactPerson = "John Smith";
customer1.vip = true;
db.AddRecord(customer1);
Customer customer2 = new Customer();
customer2.name = "WebAlta";
customer2.address = "Moscow, Russia, Kolomenskay nab.,2";
customer2.phone = "222-22222";
customer2.contactPerson = "Piter Volokov";
db.AddRecord(customer2);
BugReport bug1 = new BugReport();
bug1.issuedBy = customer1;
bug1.priority = BugReport.Priority.Low;
bug1.description = "It doesn't work";
bug1.version = 1.03M;
db.AddRecord(bug1);
BugReport bug2 = new BugReport();
bug2.issuedBy = customer2;
bug2.priority = BugReport.Priority.High;
bug2.description = "Something is definitely wrong";
bug2.version = 2.01M;
db.AddRecord(bug2);
sb.AppendLine("Search customer by name");
n = 0;
foreach (Customer c in db.Select<Customer>(c => c.name == "WebAlta"))
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
sb.AppendLine("Locate customers issued high priority bugs for version 2.0");
n = 0;
var query1 = from bug in db.GetTable<BugReport>()
where bug.priority >= BugReport.Priority.High && bug.version >= 2.0M
orderby bug.priority
select bug.issuedBy;
foreach (var c in query1)
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
sb.AppendLine("Select customer by name and contact person");
n = 0;
string name = "Age Soft";
string person = "John Smith";
var query2 = from c in db.GetTable<Customer>()
where name == c.name && c.contactPerson == person
select c;
foreach (var c in query2)
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
name = "WebAlta";
person = "Piter Volokov";
n = 0;
foreach (var c in query2)
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
Debug.Assert(listener.nSeqSearches == 0);
sb.AppendLine("Select with index join");
n = 0;
foreach (BugReport bug in db.Select<BugReport>(bug => bug.issuedBy.name == "WebAlta" || bug.issuedBy.name == "Age Soft"))
{
sb.AppendLine(bug.ToString());
n += 1;
}
Debug.Assert(n == 2);
sb.AppendLine("Select with index prefix search");
n = 0;
foreach (Customer customer in db.Select<Customer>(customer => customer.phone == "222-22222" && customer.name.StartsWith("Web")))
{
sb.AppendLine(customer.ToString());
n += 1;
}
Debug.Assert(n == 1);
Debug.Assert(listener.nSeqSearches == 0);
sb.AppendLine("Select without search condition");
n = 0;
var query3 = from bug in db.GetTable<BugReport>()
orderby bug.priority
select bug;
foreach (var b in query3)
{
sb.AppendLine(b.ToString());
n += 1;
}
Debug.Assert(n == 2);
sb.AppendLine("Select using sequential search");
n = 0;
var query4 = from bug in db.GetTable<BugReport>()
where bug.version >= 2.0M
select bug;
foreach (var b in query4)
{
sb.AppendLine(b.ToString());
n += 1;
}
Debug.Assert(n == 1);
n = 0;
var query5 = from bug in db.GetTable<BugReport>()
where bug.issuedBy == customer1
select bug;
foreach (var b in query5)
{
sb.AppendLine(b.ToString());
n += 1;
}
Debug.Assert(n == 1);
n = 0;
List<Customer> customers = new List<Customer>();
customers.Add(customer1);
customers.Add(customer2);
var query6 = from bug in db.GetTable<BugReport>()
where customers.Contains(bug.issuedBy)
select bug;
foreach (var b in query6)
{
sb.AppendLine(b.ToString());
n += 1;
}
Debug.Assert(n == 2);
n = 0;
foreach (Customer c in db.Select<Customer>(c => c.name.CompareTo("A") >= 0))
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 2);
n = 0;
foreach (Customer c in db.Select<Customer>(c => String.Compare(c.name, "webalta", StringComparison.CurrentCultureIgnoreCase) == 0))
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
n = 0;
foreach (Customer c in db.Select<Customer>(c => c.vip))
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
n = 0;
foreach (Customer c in db.Select<Customer>(c => !c.vip))
{
sb.AppendLine(c.ToString());
n += 1;
}
Debug.Assert(n == 1);
Debug.Assert(listener.nSeqSearches == 1);
storage.Close();
return sb.ToString();
}