/// <summary>
/// Fetches the query result of next page
/// </summary>
/// <remarks>
/// Same as calling KiiBucket.Query(KiiQuery) with NextKiiQuery
/// </remarks>
/// <returns>
/// The next query result.
/// </returns>
/// <param name='callback'>
/// Callback.
/// </param>
public void GetNextQueryResult(KiiQueryCallback <T> callback)
{
if (!HasNext)
{
if (callback != null)
{
callback(null, new InvalidOperationException("End of the page. no more results."));
}
return;
}
KiiQuery query = NextKiiQuery;
if (mBucket is KiiBucket)
{
mBucket.Query(query, callback);
// } else if (mBucket is KiiFileBucket) {
// KiiFileBucket bucket = (KiiFileBucket) mBucket;
// return (KiiQueryResult<T>) bucket.query(query, mIsTrashed);
}
else
{
if (callback != null)
{
callback(null, new SystemException("Unexpected error! " + mBucket.GetType().ToString()));
}
return;
}
}
private void ExecQuery(KiiQuery query, KiiHttpClientFactory factory, KiiQueryCallback <KiiObject> callback)
{
Utils.CheckInitialize(false);
KiiHttpClient client = factory.Create(QueryUrl, Kii.AppId, Kii.AppKey, KiiHttpMethod.POST);
KiiCloudEngine.SetAuthBearer(client);
client.ContentType = "application/vnd.kii.QueryRequest+json";
if (query == null)
{
query = new KiiQuery(null);
}
// send request
client.SendRequest(query.ToString(), (ApiResponse response, Exception e) =>
{
if (e != null)
{
if (callback != null)
{
callback(null, e);
}
return;
}
// parse response
KiiQueryResult <KiiObject> queryResult = null;
try
{
JsonObject obj = new JsonObject(response.Body);
JsonArray array = obj.GetJsonArray("results");
String nextPaginationKey = obj.OptString("nextPaginationKey");
queryResult = new KiiQueryResult <KiiObject>(query, nextPaginationKey, this, false);
for (int i = 0; i < array.Length(); i++)
{
JsonObject entry = array.GetJsonObject(i);
KiiObject kiiObject = new KiiObject(mParent, mBucketName, entry);
queryResult.Add(kiiObject);
}
}
catch (JsonException e2)
{
if (callback != null)
{
callback(null, new IllegalKiiBaseObjectFormatException(e2.Message));
}
return;
}
if (callback != null)
{
callback(queryResult, null);
}
});
}
public void Test_0102_query_next()
{
// set response
client.AddResponse(200, "{" +
"\"queryDescription\" : \"WHERE ( 1 = 1 )\"," +
"\"results\":[" +
"{\"_id\":\"497fd6ff-9178-42ec-b6ec-14bce7b5c7c9\",\"name\":\"Nick\",\"age\":18," +
"\"_created\":1334505527480,\"_modified\":1334505527480,\"_owner\":\"789399f7-7552-47a8-a524-b9119056edd9\",\"_version\":1}" +
"]," +
"\"nextPaginationKey\":\"abcd\"" +
"}");
KiiBucket bucket = Kii.Bucket("test");
KiiQuery query = new KiiQuery();
bool done = false;
int calledCount = 0;
KiiQueryCallback <KiiObject> callback = null;
callback = (KiiQueryResult <KiiObject> result, Exception e) =>
{
++calledCount;
if (calledCount == 1)
{
// first result
Assert.AreEqual(1, result.Count);
Assert.IsTrue(result.HasNext);
Assert.AreEqual("Nick", result[0]["name"]);
// set response
this.SetDefaultQueryResult();
result.GetNextQueryResult(callback);
}
else
{
Assert.AreEqual(1, result.Count);
Assert.IsFalse(result.HasNext);
Assert.AreEqual("John Smith", result[0]["name"]);
done = true;
}
};
bucket.Query(query, callback);
Assert.IsTrue(done);
}
/// <summary>
/// Query KiiObjects in this bucket.
/// </summary>
/// <remarks>
/// Query KiiObjects in this bucket with conditions given by argument.
/// </remarks>
/// <param name='query'>
/// Query conditions.
/// </param>
/// <param name='callback'>
/// Callback.
/// </param>
/// <returns>
/// List of KiiObject. If number of result is big, please call GetNextQueryResult()
/// </returns>
public void Query(KiiQuery query, KiiQueryCallback <KiiObject> callback)
{
ExecQuery(query, Kii.AsyncHttpClientFactory, callback);
}
