private async Task <PersonVertex> AddDescendant(IVertex parent, string firstName, ICosmicGraphClient cosmic)
{
return(await cosmic.AddChildAsync("descendant", parent,
new PersonVertex
{
FirstName = firstName,
LastName = "Smith",
Label = $"{firstName} Smith"
}
));
}
public async Task ExecuteAsync(ICosmicGraphClient cosmic)
{
await cosmic.ClearEntireGraphAsync();
// fred...
var fred = await cosmic.AddVertexIfNotExistsAsync(
new PersonVertex
{
// explicit known id.
Id = Guid.Empty.ToString(),
Label = "Fred Smith",
FirstName = "Fred",
LastName = "Smith"
}
);
// has a dog.
var dog = await cosmic.AddChildAsync("owner", fred,
new DogVertex
{
Id = "Jarvis",
Label = "Jarvis",
Name = "Jarvis",
Escapable = "a'b",
SpecialChars = "Yüp"
}
);
// check can find dog by property when contains special characters.
var jarvisSpecialFound = await cosmic.GetVertexAtEdgePathAsync <DogVertex>(fred, new string[] { "owner" }, nameof(dog.SpecialChars), new string[] { "Yüp" });
// and a tail.
var tail = await cosmic.AddChildAsync("tail", dog,
new TailVertex
{
Name = "Primary Tail"
}
);
// find the tail.
var tailFromEdgePath = await cosmic.GetVertexAtEdgePathAsync <TailVertex>(
fred,
new string[] { "owner", "tail" }
);
// second gen.
await AddDescendant(fred, "Bob", cosmic);
await AddDescendant(fred, "Lynda", cosmic);
var sam = await AddDescendant(fred, "Sam", cosmic);
// third gen.
var charlie = await AddDescendant(sam, "Charlie", cosmic);
await AddDescendant(sam, "Timmy", cosmic);
// fourth gen.
var dash = await AddDescendant(charlie, "Dash", cosmic);
// find dash.
var personFromPropertyPath = await cosmic.GetVertexAtEdgePathAsync <PersonVertex>(
fred,
new string[] { "descendant" },
nameof(fred.FirstName),
new string[] { "Sam", "Charlie", "Dash" }
);
}
