Topic on User talk:ValterVB

Hi Valter, thanks for your note on the portal. Can you please point me to a simple example to fetch an entity using page name and finding its QID? thanks, ~~~~

Premise: I have created this framework to elaborate many items.

Below you can see 3 examples:

1. Find single item using only Wikidata API
2. Find multiple item using only Wikidata API
3. Find multiple item using only Wikipedia API

If something isn't clear ask me.

/// <summary> Find single item from wiki and page using only Wikidata </summary>
private void button39_Click(object sender, EventArgs e)
{
	Site WD = new Site("https://www.wikidata.org", user, password); //Login
	string strJson=WD.LoadWD("enwiki", "Douglas Adams"); //Search page "Douglas Adams" in english wikipedia
	Entities EntityList = new Entities();
	EntityList = JsonConvert.DeserializeObject<Entities>(strJson, new DatavalueConverter()); //create a collection of entity: only one in this case

	Entity entity = EntityList.entities.Values.First(); //extract the first and only item
	string id = entity.id; //extract Q number
	string label=entity.labels["en"].value; //extract english label
	string description = entity.descriptions["en"].value; //extract english description

	txtMessage.Text = 
		"Qnumber: " + id + Environment.NewLine + 
		"Label: " + label + Environment.NewLine + 
		"Description: " + description;
}

/// <summary> Find a list of item from wiki and page using only Wikidata </summary>
private void button39_Click(object sender, EventArgs e)
{
	Site WD = new Site("https://www.wikidata.org", user, password); //Login
	string strJson=WD.LoadWD("enwiki", "Douglas Adams|Italy|Jimmy Wales"); //Search page "Douglas Adams" in english wikipedia
	Entities EntityList = new Entities();
	EntityList = JsonConvert.DeserializeObject<Entities>(strJson, new DatavalueConverter()); //create a collection of entity: three in this case

	if (EntityList.entities != null)
	{
		foreach (Entity entity in EntityList.entities.Values) //loop on each entity
		{
			string id = entity.id; //extract Q number
			string label = entity.labels["en"].value; //extract english label
			string description = entity.descriptions["en"].value; //extract english description
			txtMessage.AppendText(
				"Qnumber: " + id + " - " +
				"Label: " + label + " - " +
				"Description: " + description + Environment.NewLine);
		}
	}
}

/// <summary> Find a list of item from wiki and page using only Wikipedia </summary>
private void button39_Click(object sender, EventArgs e)
{
	Site WP = new Site("https://en.wikipedia.org", user, password); //Login
	string strJson = WP.LoadWP("Douglas Adams|Italy|Jimmy Wales");
	Pages pages = new Pages();
	pages = JsonConvert.DeserializeObject<Pages>(strJson);
	foreach (Page page in pages.query.pages.Values) //loop on each page
	{
		txtMessage.AppendText(page.title + " = " + page.item + Environment.NewLine);
	}
}

That worked! Thank you very much for the example. Is it possible to package the entire library into a single DLL? Right now I am having to include all the classes (site, pages, utilities etc). I am also having to include the change namespace on the classes.

I havent time to do it now, maybe in future...

Understood, no problem.

One more request, can you provide me with sample code on how to create a new item like Q60204555 with all its statements and interwiki links?

You can skip this one. I have decided to batch add items using Quickstatements.

OK, but if you want, you can see this page The example is for edit one item, if you wan create a new item you must copy only from // Edit entity to the end and change last row in WD.EditEntity("", Sitelinks, Aliases, Descriptions, Aliases, Claims, "BOT:Test"); BOT:Test is the object of the edit.

Hi Valter, the getentities requires that a enwiki link is present. How do I retrieve wikidata items that do not have an interwiki link for enwiki using just the text and language?

I solved the above by creating a search class that can work with wbsearchentities.

    public class Searchinfo

    {

        public string search { get; set; }

    }

    public class Matches

    {

        public string type { get; set; }

        public string language { get; set; }

        public string text { get; set; }

    }

    public class Search

    {

        public string repository { get; set; }

        public string id { get; set; }

        public string concepturi { get; set; }

        public string title { get; set; }

        public int pageid { get; set; }

        public string url { get; set; }

        public string label { get; set; }

        public string description { get; set; }

        public Matches match { get; set; }

    }

    public class Searches

    {

        public Searchinfo searchinfo { get; set; }

        public List<Search> search { get; set; }

        public int success { get; set; }

    }

    public string SearchWD(string lang, string pages)

    {

            string post = "";

            post = string.Format("action=wbsearchentities&format=json&language={0}&search={1}", WebUtility.UrlEncode(lang), WebUtility.UrlEncode(pages));

            return PostRequest(_url + _api, post);

    }

Yes, this is a possible solution but wasn't implemented in my BOT because I've never needed it. I had implemented the simple search:

private void button39_Click(object sender, EventArgs e)
{
	Site WD = new Site("https://www.wikidata.org", user, password); //Login
	var res = ListGenerator.ListFromSearch(WD, "Torino", "0"); //Return a tuple  res.count=n° of items res.list=item separated by pipe
	if (res.count != 0)
	{
		txtMessage.Text = "Numebr of items: " + res.count.ToString() + Environment.NewLine;
		txtMessage.AppendText(res.list); //list of items to be passed to  LoadWD
	}
}