使用TransportClient更新Java中存储在ElasticSearch中的数据

Question

I'm trying to update data in Elastic Search in my Java program with TranportClient class. I know I can UPDATE in this way :

   XContentBuilder builder = XContentFactory.jsonBuilder().startObject()
       .field("source.ivarId", source.ivarId)
       .field("source.channel", source.channel)
       .field("source.bacId", source.bacId).endObject();
   UpdateResponse response = client.prepareUpdate(_index, _type, _id).setDoc(builder.string()).get();

while source is my user-defined class which contains 3 fields : ivarId , channel and bacId .

But I want to know is there any method that could do the same thing, but using another more efficient and easier way, so that I don't need to assign each field inside a class? For example, can I do like this?

   XContentBuilder builder = XContentFactory.jsonBuilder().startObject()
       .field("source", source).endObject();
   UpdateResponse response = client.prepareUpdate(_index, _type, _id).setDoc(builder.string()).get();

I tried the latter method, and I got this exception :

MapperParsingException[object mapping for [source] tried to parse field [source] as object, but found a concrete value]

I'm using Java 1.8.0.121 , and both versions of ElasticSearch and TransportClient are 5.1 . Thanks!

Answer 1

The answer is much more easier than I thought.

Gson gson = new Gson();
String sourceJsonString = gson.toJson(updateContent);
UpdateResponse response = client
    .prepareUpdate(_index, "logs", id).setDoc(sourceJsonString).get();

updateContent is the object that contained new data, just to transform it to Json string, then use that to update, done.