public void Lookup()
{
string projectId = _fixture.ProjectId;
string namespaceId = _fixture.NamespaceId;
// Snippet: Lookup(Key[])
DatastoreDb db = DatastoreDb.Create(projectId, namespaceId);
KeyFactory keyFactory = db.CreateKeyFactory("message");
Entity message = new Entity {
Key = keyFactory.CreateIncompleteKey(), ["text"] = "Original"
};
db.Insert(message);
using (DatastoreTransaction transaction = db.BeginTransaction())
{
// Look the message up at the start of the transaction
Entity fetched1 = transaction.Lookup(message.Key);
Console.WriteLine((string)fetched1["text"]); // "Original"
// Update the message outside the transaction
message["text"] = "Updated";
db.Update(message);
// Look up the message up again. We are guaranteed not to see the
// update because it occurred after the start of the transaction.
Entity fetched2 = transaction.Lookup(message.Key);
Console.WriteLine((string)fetched2["text"]); // Still "Original"
}
// End snippet
}
public void Update()
{
string projectId = _fixture.ProjectId;
string namespaceId = _fixture.NamespaceId;
// Snippet: Update(Entity, CallSettings)
DatastoreDb db = DatastoreDb.Create(projectId, namespaceId);
KeyFactory keyFactory = db.CreateKeyFactory("book");
Entity book = new Entity
{
Key = keyFactory.CreateIncompleteKey(),
["author"] = "Harper Lee",
["title"] = "Tequila Mockingbird",
["publication_date"] = new DateTime(1960, 7, 11, 0, 0, 0, DateTimeKind.Utc),
["genres"] = new[] { "Southern drama", "Courtroom drama", "Bildungsroman" }
};
db.Insert(book);
// Correct the typo in memory
book["title"] = "To Kill a Mockingbird";
// Then update the entity in Datastore
db.Update(book);
// End snippet
var fetched = db.Lookup(book.Key);
Assert.Equal("To Kill a Mockingbird", (string)fetched["title"]);
}
//Main function
static void Main()
{
KeyFactory _keyFactory = _db.CreateKeyFactory(entity_kind);
//Use this code to CREATE a new KIND and KEY
/*Entity task = new Entity()
* {
* Key = _db.CreateKeyFactory(entity_kind).CreateKey(entity_key),
* ["UpdatedDate"] = currentDateTimeTimestampUTC
* };
*
* //Insert the new Entity to Datastore
* task.Key = _db.Insert(task);*/
//Use this code to update a specific KIND and KEY
Entity _sampleTask = new Entity()
{
Key = _keyFactory.CreateKey(entity_key),
};
_sampleTask["UpdatedDate"] = currentDateTimeTimestampUTC;
_db.Update(_sampleTask);
Console.WriteLine("Application was executed!");
}
public void TestUpdate()
{
_db.Upsert(_sampleTask);
// [START update]
_sampleTask["priority"] = 5;
_db.Update(_sampleTask);
// [END update]
Assert.Equal(_sampleTask, _db.Lookup(_sampleTask.Key));
}
public void Update(Item item)
{
_db.Update(item.ToEntity());
}
public void Update(Book book)
{
_db.Update(book.ToEntity());
}
public void Update(ImageMetaDeta image)
{
_db.Update(image.ToEntity());
}
public void Update(Place place)
{
_db.Update(place.ToEntity());
}
public void UpdateOwner(Owner owner)
{
db.Update(owner.ToEntity());
}
public long Update(T item)
{
_db.Update(item.ToEntity(_db.CreateKeyFactory(_kind)));
return(item.Id);
}
public void Update(Player player)
{
_db.Update(player.ToEntity());
}
public void Update(Movie movie)
{
_db.Update(movie.ToEntity());
}
public void UpdateDatastore(Entity aEntity)
{
datastore.Update(aEntity);
}
public void Update(Team team)
{
_db.Update(team.ToEntity());
}
public void Update(Book book)
{
_db.Update(book);
}