public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
Dictionary<string, object> wholeDict = serializer.Deserialize<Dictionary<string, object>>(reader);
Dictionary<string, object> facetDict = JsonConvert.DeserializeObject<Dictionary<string, object>>(wholeDict.First().Value.ToString());
Dictionary<string, object> histoDict = JsonConvert.DeserializeObject<Dictionary<string, object>>(facetDict.GetString(AggregationTypeEnum.DateHistogram.ToString()));
DateHistogramAggregate agg = null;
string aggName = wholeDict.First().Key;
string field = histoDict.GetStringOrDefault(_FIELD);
Script script = histoDict.DeserializeObject<Script>();
DateIntervalEnum intervalType = DateIntervalEnum.Day;
string intervalValue = histoDict.GetString(_INTERVAL);
intervalType = DateIntervalEnum.Find(intervalValue);
if (intervalType != null)
{
if (!string.IsNullOrWhiteSpace(field) && script != null)
agg = new DateHistogramAggregate(aggName, field, script, intervalType);
else if (!string.IsNullOrWhiteSpace(field))
agg = new DateHistogramAggregate(aggName, field, intervalType);
else if(script != null)
agg = new DateHistogramAggregate(aggName, script, intervalType);
}
else
{
TimeValue timeValue = new TimeValue(intervalValue);
if (!string.IsNullOrWhiteSpace(field) && script != null)
agg = new DateHistogramAggregate(aggName, field, script, timeValue);
else if (!string.IsNullOrWhiteSpace(field))
agg = new DateHistogramAggregate(aggName, field, timeValue);
else if(script != null)
agg = new DateHistogramAggregate(aggName, script, timeValue);
}
if (agg == null)
throw new RequiredPropertyMissingException(_FIELD + "/" + Script.SCRIPT);
if (histoDict.ContainsKey(_POST_OFFSET))
agg.PostOffset = JsonConvert.DeserializeObject<TimeValue>(histoDict.GetString(_POST_OFFSET));
if (histoDict.ContainsKey(_PRE_OFFSET))
agg.PreOffset = JsonConvert.DeserializeObject<TimeValue>(histoDict.GetString(_PRE_OFFSET));
agg.PostZone = histoDict.GetTimeSpan(_POST_ZONE, _TIMESPAN_DEFAULT);
agg.PreZone = histoDict.GetTimeSpan(_PRE_ZONE, _TIMESPAN_DEFAULT);
agg.PreZoneAdjustLargeInterval = histoDict.GetBool(_PRE_ZONE_ADJUST_LARGE_INTERVAL, _PRE_ZONE_ADJUST_LARGE_INTERVAL_DEFAULT);
agg.TimeZone = histoDict.GetTimeSpan(_TIME_ZONE, _TIMESPAN_DEFAULT);
agg.MinimumDocumentCount = histoDict.GetInt32(_MINIMUM_DOCUMENT_COUNT, _MINIMUM_DOCUMENT_COUNT_DEFAULT);
if (histoDict.ContainsKey(_ORDER))
{
Dictionary<string, object> orderDict = JsonConvert.DeserializeObject<Dictionary<string, object>>(histoDict.GetString(_ORDER));
if (orderDict.Count != 1)
throw new Exception("The order parameter must be a dictionary of one key value pair.");
agg.SortValue = orderDict.First().Key;
agg.SortOrder = SortOrderEnum.Find(orderDict.First().Value.ToString());
}
return agg;
}
public void PASS_Create()
{
DateHistogramAggregate agg = new DateHistogramAggregate("name", "field", DateIntervalEnum.Day);
Assert.IsNotNull(agg);
Assert.AreEqual("name", agg.Name);
Assert.AreEqual("field", agg.Field);
Assert.AreEqual(DateIntervalEnum.Day, agg.ConstantInterval);
}
public void PASS_Serialize()
{
DateHistogramAggregate agg = new DateHistogramAggregate("name", "field", DateIntervalEnum.Day);
string json = JsonConvert.SerializeObject(agg);
Assert.IsNotNull(json);
string expectedJson = "{\"name\":{\"date_histogram\":{\"field\":\"field\",\"interval\":\"day\"}}}";
Assert.AreEqual(expectedJson, json);
}
