/// <summary>
/// Inits this instance.
/// </summary>
public override void Init()
{
LookupUsersOptions options = this.OptionalProperties as LookupUsersOptions;
if (options == null)
{
throw new NullReferenceException("The optional parameters class is not valid for this command.");
}
if (options.UserIds.Count > 0)
{
this.RequestParameters.Add("user_id",
string.Join(",", options.UserIds.Where(id => id > 0).Select(id => id.ToString()).ToArray()));
}
if (options.ScreenNames.Count > 0)
{
this.RequestParameters.Add("screen_name", string.Join(",", options.ScreenNames.ToArray()));
}
if (options.IncludeEntities)
{
this.RequestParameters.Add("include_entities", "true");
}
}
public static void LookupUsers()
{
OAuthTokens tokens = Configuration.GetTokens();
LookupUsersOptions options = new LookupUsersOptions();
options.ScreenNames.Add("twitterapi");
options.ScreenNames.Add("digitallyborn");
options.ScreenNames.Add("trixtur");
options.ScreenNames.Add("twit_er_izer");
var result = TwitterUser.Lookup(tokens, options);
Assert.That(result.Result == RequestResult.Success);
Assert.IsNotNull(result.ResponseObject);
}
/// <summary>
/// Initializes a new instance of the <see cref="LookupUsersCommand"/> class.
/// </summary>
/// <param name="tokens">The tokens.</param>
/// <param name="options">The options.</param>
public LookupUsersCommand(OAuthTokens tokens, LookupUsersOptions options)
: base(HTTPVerb.GET, "users/lookup.json", tokens, options)
{
if (tokens == null)
{
throw new ArgumentNullException("tokens");
}
if (options == null)
{
throw new ArgumentNullException("options");
}
if (options.ScreenNames.Count == 0 && options.UserIds.Count == 0)
{
throw new ArgumentException("At least one screen name or user id must be specified.");
}
}
public static CommandResult LookUpUsers(object[] list, ListType listType, int UsersPerLookUp)
{
if (!IsInitiated)
{
return(CommandResult.NotInitiated);
}
LookupUsersOptions lookupOptions = new LookupUsersOptions();
//can lookup 100 ids at a time
for (int i = 0; i < list.Length; i += UsersPerLookUp)
{
if (listType == ListType.Ids)
{
lookupOptions.UserIds = new TwitterIdCollection(list.Skip(i).Take(UsersPerLookUp).Cast <decimal>().ToList <decimal>());
}
else if (listType == ListType.Screennames)
{
lookupOptions.ScreenNames = new Collection <string>(list.Skip(i).Take(UsersPerLookUp).Cast <string>().ToList <string>());
}
TwitterResponse <TwitterUserCollection> UserLookupResponse = null;
try
{
UserLookupResponse = TwitterUser.Lookup(Tokens, lookupOptions);
}
catch (TwitterizerException)
{
throw; //something is wrong with Twitterizer
}
catch (Exception ex)
{
//do nothing (and manually try again later)
Form.AppendLineToOutput("Failed. " + ex.Message, Color.DarkGreen);
}
if (UserLookupResponse.Result == RequestResult.Success && UserLookupResponse.ResponseObject != null)
{
//refactor this?
//SaveUsers(user, userLookupResponse.ResponseObject);
foreach (var user in UserLookupResponse.ResponseObject)
{
user.Status = null; //remove the user's latest tweet (this causes problems with FKs because
// the tweet's retweet, entities, places, etc. don't exist in the DB.
}
using (var scope = new System.Transactions.TransactionScope())
{
TwitterContext db = null;
try
{
db = new TwitterContext();
db.Configuration.AutoDetectChangesEnabled = false;
db.Configuration.ValidateOnSaveEnabled = false;
var LastUser = UserLookupResponse.ResponseObject.Last();
db.Users.AddRange(UserLookupResponse.ResponseObject);
db.SaveChanges(); //add up to 100 users
Form.AppendLineToOutput(string.Format("Added {0} users. Last user added is : {1} ({2})", UserLookupResponse.ResponseObject.Count, LastUser.ScreenName, LastUser.Id), Color.DarkGreen);
}
catch (System.Data.Entity.Infrastructure.DbUpdateException ex)
{
db = new TwitterContext();
db.Configuration.AutoDetectChangesEnabled = false;
db.Configuration.ValidateOnSaveEnabled = false;
Form.AppendLineToOutput(string.Format("Error with some users : {0}", ex.Message), Color.DarkGreen);
Form.AppendLineToOutput(string.Format("Continuing with remaining {0} users", list.Length - i), Color.DarkGreen);
}
catch (Exception ex)
{
Form.AppendLineToOutput(string.Format("Error : {0}", ex.Message), Color.DarkGreen);
//do nothing, really
TimeSpan _OneSecond = new TimeSpan(0, 0, 1);
System.Threading.Thread.Sleep(_OneSecond);
db = new TwitterContext(); //to clear the follower in the current context which caused the exception
db.Configuration.AutoDetectChangesEnabled = false;
db.Configuration.ValidateOnSaveEnabled = false;
}
finally
{
if (db != null)
{
db.Dispose();
}
}
scope.Complete();
}
}
else if (UserLookupResponse.Result == RequestResult.RateLimited)
{
WaitForRateLimitReset(UserLookupResponse);
Form.AppendLineToOutput("Resuming LookUpUsers command", Color.DarkGreen);
continue;
}
else
{
HandleTwitterizerError <TwitterUserCollection>(UserLookupResponse);
}
}
return(CommandResult.Success);
}
