Regarding contains and exact match - Elastic Search

[chaitanya-nit]

I am trying to build a search engine based on bm25 retriever. I want to implement advanced search with this retriever. Advanced search has lot of features, but I want to implement only "Contains", "Does not contains" and "Exact Match". How to prepare such filters using elastic search document store?

I have implemented metadata filters.

Update:

I found a solution from the elastic search docs.

`from elasticsearch import Elasticsearch

create an instance of the Elasticsearch client

es = Elasticsearch()

define the query to search for documents containing a specific phrase

query = {
"query": {
"match_phrase": {
"text": "contains phrase"
}
}
}

execute the search and print the results

results = es.search(index="my_index", body=query)
print(results)
`

But when I search for "contains_phrase" through elastic_document_store.search() I am getting 0 results

[mayankjobanputra]

@chaitanya-nit I am a bit confused here. Are you using Haystack's ElasticSearch Document Store or your own? Because Haystack's ElasticSearch Document Store does not have search method.