Hi, I'm trying to index multilevel nested content without any success. I'm able to break out the values one level down but as I have multi level nested content the second level writes out the JSON data as one string. Any help would much appreciated.

The code looks like this:

using Examine;
using Umbraco.Core;
using System.Linq;
using Newtonsoft.Json;
using System.Collections.Generic;
using Newtonsoft.Json.Linq;

namespace Custom.Controllers
{
    public static class StringExtensions
    {
        public static bool DetectIsJson(this string input)
        {
            input = input.Trim();

            if (input.StartsWith("{") && input.EndsWith("}"))
                return true;
            if (input.StartsWith("["))
                return input.EndsWith("]");
            else
                return false;
        }
    }

    public class ExamineJsonIndexer : ApplicationEventHandler
    {
        protected override void ApplicationStarted(UmbracoApplicationBase umbracoApplication, ApplicationContext applicationContext)
        {
            base.ApplicationStarted(umbracoApplication, applicationContext);

            // Declare the indexers that should index JSON properties
            var jsonIndexer = ExamineManager.Instance.IndexProviderCollection["KundUnikumContentIndexer"];

            if (jsonIndexer != null)
            {
                jsonIndexer.GatheringNodeData += (sender, e) =>
                {
                    // Extract JSON properties
                    var fieldKeys = e.Fields.Keys.ToArray();

                    foreach (var key in fieldKeys)
                    {
                        var value = e.Fields[key];

                        // Check if index field is JSON data
                        if (value.DetectIsJson())
                        {
                            IndexNestedObject(e.Fields, JsonConvert.DeserializeObject(value), key);
                        }
                    }
                };
            }
        }

        private void IndexNestedObject(Dictionary<string, string> fields, object obj, string prefix)
        {
            var objType = obj.GetType();

            if (objType == typeof(JObject))
            {
                var jObj = obj as JObject;

                if (jObj != null)
                {
                    foreach (var kvp in jObj)
                    {
                        var propKey = prefix + "___jobject___" + kvp.Key;
                        var valueType = kvp.Value.GetType();

                        if (typeof(JContainer).IsAssignableFrom(valueType))
                        {
                            IndexNestedObject(fields, kvp.Value, propKey);
                        }
                        else
                        {
                            fields.Add(propKey, kvp.Value.ToString().StripHtml());
                        }
                    }
                }
            }
            else if (objType == typeof(JArray))
            {
                var jArr = obj as JArray;

                if (jArr != null)
                {
                    for (var i = 0; i < jArr.Count; i++)
                    {
                        var itm = jArr[i];
                        var propKey = prefix + "_jarray_" + i;
                        var valueType = itm.GetType();

                        if (typeof(JContainer).IsAssignableFrom(valueType))
                        {
                            IndexNestedObject(fields, itm, propKey);
                        }
                        else
                        {
                            fields.Add(propKey, itm.ToString().StripHtml());
                        }
                    }
                }
            }
        }
    }
}