Prefix Query and Nested Object exists condition

Elastic Stack Elasticsearch
1

Hi

I have my index defined as

"person": {
"firstName": { "type": "string"},
"lastName": { "type": "string" },
"email": {
"type": "nested",
"properties": {
"address": {"type": "string" }

This is like one person can have zero to many email address.

I would like to write a query which will do a prefix match of either first name, last name, or email, and should have at least one email address for the matching person first name or last name.

I know how to apply exist query condition, but not able to apply filter with should clause on first name or last name...

{
"query" : {
"nested" : {
"path" : "email",
"query" : { "match_all" : { } },
"filter" : {
"exists" : { "field" : "email.address" }
}
}
}
}

eg:

  1. firstName: "jack" lastName: "John" with no email should bring zero rows..when searchText is "jac"..even though this is matching firstname using prefix condition.

  2. firstName: "andrew", lastName: "John" with an email: andrew.john@example.com
    should bring the above row..when searchText is "and"

Using elasticsearch 2.3.4.. Appreciate any direction to this