How to update multiple fields using java api elasticsearch script

Question

I am trying to update multiple value in index using Java Api through Elastic Search Script. But not able to update fields.

Sample code :-

1:

UpdateResponse response = request.setScript("ctx._source").setScriptParams(scriptParams).execute().actionGet();

2:

UpdateResponse response = request.setScript("ctx._source.").setScriptParams(scriptParams).execute().actionGet();

if I mentioned .(dot) in ("ctx._source.") getting illegalArgument Exception and if i do not use dot, not getting any exception but values not getting updated in Index. Can any one tell me the solutions to resolve this.

Answer 1

First of all, your script (ctx._source) doesn't do anything, as one of the commenters already pointed out. If you want to update, say, field "a", then you would need a script like:

ctx._source.a = "foobar"

This would assign the string "foobar" to field "a". You can do more than simple assignment, though. Check out the docs for more details and examples:

http://www.elasticsearch.org/guide/reference/api/update/

Updating multiple fields with one script is also possible. You can use semicolons to separate different MVEL instructions. E.g.:

ctx._source.a = "foo"; ctx._source.b = "bar"

Answer 2

In Elastic search have an Update Java API. Look at the following code

client.prepareUpdate("index","typw","1153")
            .addScriptParam("assignee", assign)
             .addScriptParam("newobject", responsearray)
            .setScript("ctx._source.assignee=assignee;ctx._source.responsearray=newobject ").execute().actionGet();

Here, assign variable contains object value and response array variable contains list of data.