private static void StoreData(IObjectContainer container)
{
Pilot john = new Pilot("John", 42);
Pilot joanna = new Pilot("Joanna", 45);
Pilot jenny = new Pilot("Jenny", 21);
Pilot rick = new Pilot("Rick", 33);
container.Store(new Car(john, "Ferrari"));
container.Store(new Car(joanna, "Mercedes"));
container.Store(new Car(jenny, "Volvo"));
container.Store(new Car(rick, "Fiat"));
}
private static void CompareWithStoredObject(IObjectContainer container)
{
Console.WriteLine("Compare with existing object");
// #example: Compare with existing object
Pilot pilot = container.Query <Pilot>()[0];
IQuery query = container.Query();
query.Constrain(typeof(Car));
// if the given object is stored, its compared by identity
query.Descend("pilot").Constrain(pilot);
IObjectSet carsOfPilot = query.Execute();
// #end example
ListResult(carsOfPilot);
}
private static void MixWithQueryByExample(IObjectContainer container)
{
Console.WriteLine("Mix with query by example");
// #example: Mix with query by example
IQuery query = container.Query();
query.Constrain(typeof(Car));
// if the given object is not stored,
// it will behave like query by example for the given object
Pilot examplePilot = new Pilot(null, 42);
query.Descend("pilot").Constrain(examplePilot);
IObjectSet carsOfPilot = query.Execute();
// #end example
ListResult(carsOfPilot);
}
public Car(Pilot pilot, string name)
{
this.pilot = pilot;
this.name = name;
}
public Car(Pilot pilot, string name)
{
this.pilot = pilot;
this.name = name;
}
public void Evaluate(ICandidate candidate)
{
Pilot pilot = (Pilot)candidate.GetObject();
candidate.Include(pilot.Age % 2 != 0);
}
private static void StoreData(IObjectContainer container)
{
Pilot john = new Pilot("John", 42);
Pilot joanna = new Pilot("Joanna", 45);
Pilot jenny = new Pilot("Jenny", 21);
Pilot rick = new Pilot("Rick", 33);
container.Store(new Car(john, "Ferrari"));
container.Store(new Car(joanna, "Mercedes"));
container.Store(new Car(jenny, "Volvo"));
container.Store(new Car(rick, "Fiat"));
BlogPost firstPost = new BlogPost("db4o", "Content about db4o");
firstPost.AddTags("db4o", ".net", "java", "database");
firstPost.AddMetaData("comment-feed-link", "localhost/rss");
firstPost.AddAuthors(new Author("John"), new Author("Jenny"), new Author("Joanna"));
container.Store(firstPost);
BlogPost secondPost = new BlogPost("cars", "Speedy cars");
secondPost.AddTags("cars", "fast");
secondPost.AddMetaData("comment-feed-link", "localhost/rss");
secondPost.AddMetaData("source", "www.wikipedia.org");
secondPost.AddAuthors(new Author("Joanna"), new Author("Jenny"));
container.Store(secondPost);
}
private static void MixWithQueryByExample(IObjectContainer container)
{
Console.WriteLine("Mix with query by example");
// #example: Mix with query by example
IQuery query = container.Query();
query.Constrain(typeof(Car));
// if the given object is not stored,
// it will behave like query by example for the given object
Pilot examplePilot = new Pilot(null, 42);
query.Descend("pilot").Constrain(examplePilot);
IObjectSet carsOfPilot = query.Execute();
// #end example
ListResult(carsOfPilot);
}