public Task RelationReverseQueryTest()
{
var hangzhou = new AVObject("City");
hangzhou["name"] = "杭州";
var wenzhou = new AVObject("City");
wenzhou["name"] = "温州";
var zhejiang = new AVObject("Province");
zhejiang.Set("name", "浙江");
return(AVObject.SaveAllAsync(new AVObject[] { hangzhou, wenzhou }).ContinueWith(t =>
{
var relation = zhejiang.GetRelation <AVObject>("includedCities");
relation.Add(hangzhou);
relation.Add(wenzhou);
return zhejiang.SaveAsync();
}).Unwrap().ContinueWith(s =>
{
var reverseQuery = hangzhou.GetRelationRevserseQuery <AVObject>("Province", "includedCities");
return reverseQuery.FindAsync();
}).Unwrap().ContinueWith(x =>
{
var provinces = x.Result;
Assert.IsTrue(provinces.Count() == 1);
return Task.FromResult(0);
}));
}
private async void SaveScores()
{
try
{
var studentId = (await app.Assist.GetStudentInfo()).StudentId;
var query = new AVQuery <AVObject>("CourseScore").WhereEqualTo("stuKey", studentId);
var objs = await query.FindAsync();
List <AVObject> saving = new List <AVObject>();
foreach (var score in Scores)
{
bool has = false;
var fullName = "[" + score.CourseId + "]" + score.CourseName;
foreach (var obj in objs)
{
if (Convert.ToString(obj["courseName"]) == fullName)
{
has = true;
break;
}
}
if (has)
{
continue;
}
if (Double.TryParse(score.Score1, out double dScore1) &&
Double.TryParse(score.Score2, out double dScore2))
{
var o = new AVObject("CourseScore")
{
["stuKey"] = studentId,
["courseName"] = fullName,
["term"] = score.Semester,
["score1"] = dScore1,
["score2"] = dScore2,
["score"] = score.Score
};
saving.Add(o);
}
}
await AVObject.SaveAllAsync(saving);
}
catch
{
}
}
/// <summary>
/// Saves all of the AVObjects in the enumeration. Equivalent to
/// calling
/// <see cref="AVObject.SaveAllAsync{T}(IEnumerable{T}, CancellationToken)"/>.
/// </summary>
/// <param name="objects">The objects to save.</param>
/// <param name="cancellationToken">The cancellation token.</param>
public static Task SaveAllAsync <T>(
this IEnumerable <T> objects, CancellationToken cancellationToken) where T : AVObject
{
return(AVObject.SaveAllAsync(objects, cancellationToken));
}
/// <summary>
/// Saves all of the AVObjects in the enumeration. Equivalent to
/// calling <see cref="AVObject.SaveAllAsync{T}(IEnumerable{T})"/>.
/// </summary>
/// <param name="objects">The objects to save.</param>
public static Task SaveAllAsync <T>(this IEnumerable <T> objects) where T : AVObject
{
return(AVObject.SaveAllAsync(objects));
}
