I'm using nodejs/express for a webapp and storing data in elastic search. I would like to put something like the user profile in elastic search, and when I pull it out call methods on it. I'm used to Java/C# so I would expect to do something like
var user = new User(elasticSearchResult)
user.getUserRoles()
The constructor would parse the data and the class would contain all the methods I need.
you need this https://www.npmjs.com/package/elasticsearch Then you can create function for that User class as
User.getUserRoles = function(){
client.search({
index: ....,
type: ....
body: {
query: {
....
}
}
}).then(function (resp) {
//Handle records return here
}, function (err) {
//handle error here
});
I ended up using this for my user class
var proto = User.prototype;
function User(){}
proto.setRoles = function(roles) {
this.roles = roles;
};
proto.fromJson = function(json) {
if(json._source) { // From ElasticSearch query
this.roles = json._source.roles;
}
};
exports.User = User;
And in my calling class
var user = new UserClass.User();
db.searchForUser(user.email, function(err, success) {
if (success.hits.total == 1) {
var userFromDb = success.hits.hits[0];
user.fromJson(userFromDb);
return done(null, user);
}
});
and if anyone is wondering, here is my searchForUser method
exports.searchForUser = function (email, callback) {
var qryObj = {
"query": {
"bool": {
"must": [
{
"match": {
"email": email
}
}
]
}
}
};
client.search ({index:'myindex', type:'user', body: qryObj}, callback);
};