Simple full text search in ElasticSearch - lucene

Question

I'm trying to understand how ElasticSearch Query DSL works.
It would be a lot of help if anyone could give me an example how to perform a search like the following MySQL query:
SELECT * FROM products
WHERE shop_id = 1
AND MATCH(title, description) AGAINST ('test' IN BOOLEAN MODE)

Answer 1

Assuming that you indexed some documents containing at least the shop_id, title and description fields, something like the following example:
{
"shop_id" : "here goes your shop_id",
"title" : "here goes your title",
"description" : "here goes your description"
}
You can execute a multi match query against multiple fields, and give them a different weight (usually title is more important). You can also combine the query with a term filter on shop_id:
{
"query" : {
"multi_match" : {
"query" : "here goes your query",
"fields" : [ "title^2", "description" ]
},
"filter" : {
"term" : { "shop_id" : "here goes your shop id" }
}
}
You need to submit the query using the search API. Filters are used to reduce the set of documentsthe query is eecute against. Filters are faster since don't involve scoring and cached. In my example I applied a top level filter, which might be or not a good fit for you depending on what else you want to do next. If you want to make a facet, for instance, the filter would be ignored in the facet. Another way to add a filter, which would be taken into account while computing the facets as well, is the filtered query.