I am following this blog post from Microsoft testing out DocumentDB.
I have created a collection and inserted 2 documents via different POCO classes on my application. It created the documents but I cannot filter them back into their respective POCO classes. I realized that I am querying all the collection so it is obviously retrieving all the documents stored inside that collection.
What is the best way to differentiate documents while querying so that I can query them separately by type?
I can add a type field to the document and can get by WHERE type="user" but I'm not sure that I cannot do SELECT * FROM users with users being a document type (if there is such a thing in DocumentDB), not a collection.
Here is how I am creating documents:
var user1= new User()
{
UserTypeId = 0,
UserName = "[email protected]",
Password = "12345",
PasswordSalt = "saltyPassword",
UserStatusId = 1,
ProfilePhotoKey = "KJSY"
};
await DocumentDBRepository<User>.CreateItemAsync(user1);
var client = new Client()
{
ClientName = "client1",
Secret = "rxPBsIVYya2Jg2ZHPNG8gL0P36TnutiBehvEFgk938M=",
Title = "Administration Front End Application",
ApplicationTypeId = 0,
Active = false,
RefreshTokenLifeTime = 60,
AllowedOrigin = "http://localhost:8080",
AllowedRoles = "admin"
};
await DocumentDBRepository<Client>.CreateItemAsync(client);
Document Db repository class
public static class DocumentDBRepository<T>
{
//Use the Database if it exists, if not create a new Database
private static Database ReadOrCreateDatabase()
{
var db = Client.CreateDatabaseQuery()
.Where(d => d.Id == DatabaseId)
.AsEnumerable()
.FirstOrDefault();
if (db == null)
{
db = Client.CreateDatabaseAsync(new Database { Id = DatabaseId }).Result;
}
return db;
}
//Use the DocumentCollection if it exists, if not create a new Collection
private static DocumentCollection ReadOrCreateCollection(string databaseLink)
{
var col = Client.CreateDocumentCollectionQuery(databaseLink)
.Where(c => c.Id == CollectionId)
.AsEnumerable()
.FirstOrDefault();
if (col == null)
{
var collectionSpec = new DocumentCollection { Id = CollectionId };
var requestOptions = new RequestOptions { OfferType = "S1" };
col = Client.CreateDocumentCollectionAsync(databaseLink, collectionSpec, requestOptions).Result;
}
return col;
}
//Expose the "database" value from configuration as a property for internal use
private static string databaseId;
private static String DatabaseId
{
get
{
if (string.IsNullOrEmpty(databaseId))
{
databaseId = ConfigurationManager.AppSettings["database"];
}
return databaseId;
}
}
//Expose the "collection" value from configuration as a property for internal use
private static string collectionId;
private static String CollectionId
{
get
{
if (string.IsNullOrEmpty(collectionId))
{
collectionId = ConfigurationManager.AppSettings["collection"];
}
return collectionId;
}
}
//Use the ReadOrCreateDatabase function to get a reference to the database.
private static Database database;
private static Database Database
{
get
{
if (database == null)
{
database = ReadOrCreateDatabase();
}
return database;
}
}
//Use the ReadOrCreateCollection function to get a reference to the collection.
private static DocumentCollection collection;
private static DocumentCollection Collection
{
get
{
if (collection == null)
{
collection = ReadOrCreateCollection(Database.SelfLink);
}
return collection;
}
}
//This property establishes a new connection to DocumentDB the first time it is used,
//and then reuses this instance for the duration of the application avoiding the
//overhead of instantiating a new instance of DocumentClient with each request
private static DocumentClient client;
private static DocumentClient Client
{
get
{
// change policy to ConnectionMode: Direct and ConnectionProtocol: TCP on publishing to AZURE
if (client == null)
{
string endpoint = ConfigurationManager.AppSettings["endpoint"];
string authKey = ConfigurationManager.AppSettings["authKey"];
Uri endpointUri = new Uri(endpoint);
client = new DocumentClient(endpointUri, authKey);
}
return client;
}
}
/* QUERY HELPERS */
public static IEnumerable<T> GetAllItems()
{
return Client.CreateDocumentQuery<T>(Collection.DocumentsLink)
.AsEnumerable();
}
public static IEnumerable<T> GetItems(Expression<Func<T, bool>> predicate)
{
return Client.CreateDocumentQuery<T>(Collection.DocumentsLink)
.Where(predicate)
.AsEnumerable();
}
public static async Task<Document> CreateItemAsync(T item)
{
return await Client.CreateDocumentAsync(Collection.SelfLink, item);
}
public static T GetItem(Expression<Func<T, bool>> predicate)
{
return Client.CreateDocumentQuery<T>(Collection.DocumentsLink)
.Where(predicate)
.AsEnumerable()
.FirstOrDefault();
}
public static async Task<Document> UpdateItemAsync(string id, T item)
{
Document doc = GetDocument(id);
return await Client.ReplaceDocumentAsync(doc.SelfLink, item);
}
private static Document GetDocument(string id)
{
return Client.CreateDocumentQuery(Collection.DocumentsLink)
.Where(d => d.Id == id)
.AsEnumerable()
.FirstOrDefault();
}
}
I am trying to get:
var q = DocumentDBRepository<User>.GetAllItems().ToList();
var t = DocumentDBRepository<Client>.GetAllItems().ToList();
q should contain only user documents those were created by
await DocumentDBRepository<User>.CreateItemAsync(user1);
and t should contain only client documents those were created by
await DocumentDBRepository<Client>.CreateItemAsync(client1);
