/// <summary>
/// Initialises a result of a successful query
/// </summary>
/// <param name="responseString">String (possibly an XML code) returned by the query</param>
public QueryResult(HttpFetcher fetcher, String responseString, Object tag)
{
this.fetcher = fetcher;
this.responseString = responseString;
this.exception = null;
this.tag = tag;
}
/// <summary>
/// Initialises a result of a query which ended with an exception
/// </summary>
/// <param name="exception">Exception which has occurred</param>
public QueryResult(HttpFetcher fetcher, Exception exception, Object tag)
{
this.fetcher = fetcher;
this.responseString = null;
this.exception = exception;
this.tag = tag;
}
private void HttpQueryExecutedCallback(HttpFetcher.QueryResult result)
{
FetchData fetchData = (FetchData)result.Tag;
List<RecentChange> changes = new List<RecentChange>();
if (result.WasSuccessful())
{
try
{
XmlReaderSettings xmlSettings = new XmlReaderSettings { IgnoreComments = true, IgnoreWhitespace = true };
XmlReader xmlReader = XmlReader.Create(new System.IO.StringReader(result.ResponseString), xmlSettings);
String listRootElement;
String listItemElement;
if (fetchData.isItWatchlistQuery)
{
listRootElement = "watchlist";
listItemElement = "item";
}
else
{
listRootElement = "recentchanges";
listItemElement = "rc";
}
if (!xmlReader.ReadToDescendant(listRootElement))
throw new Exception("MediaWiki API returned an error"); //TODO better exception
xmlReader.ReadToDescendant(listItemElement);
while (xmlReader.NodeType != XmlNodeType.EndElement)
{
RecentChange change = new RecentChange();
while (xmlReader.MoveToNextAttribute())
{
switch (xmlReader.Name)
{
case "title":
change.Title = xmlReader.Value;
break;
case "pageid":
change.PageId = xmlReader.ReadContentAsInt();
break;
case "revid":
change.RevId = xmlReader.ReadContentAsInt();
break;
case "old_revid":
change.OldRevId = xmlReader.ReadContentAsInt();
break;
case "user":
change.User = xmlReader.Value;
break;
case "timestamp":
change.Timestamp = xmlReader.ReadContentAsDateTime();
break;
case "comment":
change.Comment = xmlReader.Value;
break;
case "bot":
change.IsBot = true;
break;
case "minor":
change.IsMinor = true;
break;
case "new":
change.IsNew = true;
break;
}//switch
}//while xmlReader.MoveToNextAttribute()
changes.Add(change);
xmlReader.ReadToNextSibling(listItemElement);
}//while xmlReader.NodeType != XmlNodeType.EndElement
Result rcResult = new Result(this, changes, fetchData.callerData);
fetchData.callback(rcResult);
}//try
catch (Exception e)
{
Result rcResult = new Result(this, e, fetchData.callerData);
fetchData.callback(rcResult);
}
}//if
else
{
fetchData.callback(new Result(this, result.OccurredException, fetchData.callerData));
}
}