public void Shippers_UseCase()
{
using (
var db =
new OrmLiteConnectionFactory(
"User=SYSDBA;Password=masterkey;Database=ormlite-tests.fdb;DataSource=localhost;Dialect=3;charset=ISO8859_1;",
FirebirdDialect.Provider).Open())
{
const bool overwrite = false;
db.DropTable <Shipper>();
db.DropTable <ShipperType>();
db.CreateTables(overwrite, typeof(ShipperType), typeof(Shipper)); // ShipperType must be created first!
int trainsTypeId, planesTypeId;
//Playing with transactions
using (IDbTransaction dbTrans = db.BeginTransaction())
{
db.Insert(new ShipperType {
Name = "Trains"
});
trainsTypeId = (int)db.GetLastInsertId();
db.Insert(new ShipperType {
Name = "Planes"
});
planesTypeId = (int)db.GetLastInsertId();
dbTrans.Commit();
}
using (IDbTransaction dbTrans = db.BeginTransaction(IsolationLevel.ReadCommitted))
{
db.Insert(new ShipperType {
Name = "Automobiles"
});
Assert.That(db.Select <ShipperType>(), Has.Count.EqualTo(3));
dbTrans.Rollback();
}
Assert.That(db.Select <ShipperType>(), Has.Count.EqualTo(2));
//Performing standard Insert's and Selects
db.Insert(new Shipper {
CompanyName = "Trains R Us", Phone = "555-TRAINS", ShipperTypeId = trainsTypeId
});
db.Insert(new Shipper {
CompanyName = "Planes R Us", Phone = "555-PLANES", ShipperTypeId = planesTypeId
});
db.Insert(new Shipper {
CompanyName = "We do everything!", Phone = "555-UNICORNS", ShipperTypeId = planesTypeId
});
var trainsAreUs = db.First <Shipper>("\"Type\" = {0}", trainsTypeId);
Assert.That(trainsAreUs.CompanyName, Is.EqualTo("Trains R Us"));
Assert.That(db.Select <Shipper>("CompanyName = {0} OR Phone = {1}", "Trains R Us", "555-UNICORNS"),
Has.Count.EqualTo(2));
Assert.That(db.Select <Shipper>("\"Type\" = {0}", planesTypeId), Has.Count.EqualTo(2));
//Lets update a record
trainsAreUs.Phone = "666-TRAINS";
db.Update(trainsAreUs);
Assert.That(db.GetById <Shipper>(trainsAreUs.Id).Phone, Is.EqualTo("666-TRAINS"));
//Then make it dissappear
db.Delete(trainsAreUs);
Assert.That(db.GetByIdOrDefault <Shipper>(trainsAreUs.Id), Is.Null);
//And bring it back again
db.Insert(trainsAreUs);
//Performing custom queries
//Select only a subset from the table
var partialColumns = db.Select <SubsetOfShipper>(typeof(Shipper), "\"Type\" = {0}", planesTypeId);
Assert.That(partialColumns, Has.Count.EqualTo(2));
//Select into another POCO class that matches sql
var rows = db.Select <ShipperTypeCount>(
"SELECT \"Type\" as ShipperTypeId, COUNT(*) AS Total FROM ShippersT GROUP BY \"Type\" ORDER BY COUNT(*)");
Assert.That(rows, Has.Count.EqualTo(2));
Assert.That(rows[0].ShipperTypeId, Is.EqualTo(trainsTypeId));
Assert.That(rows[0].Total, Is.EqualTo(1));
Assert.That(rows[1].ShipperTypeId, Is.EqualTo(planesTypeId));
Assert.That(rows[1].Total, Is.EqualTo(2));
//And finally lets quickly clean up the mess we've made:
db.DeleteAll <Shipper>();
db.DeleteAll <ShipperType>();
Assert.That(db.Select <Shipper>(), Has.Count.EqualTo(0));
Assert.That(db.Select <ShipperType>(), Has.Count.EqualTo(0));
}
}
