Integration of elasticsearch with neo4j database

Question

Am trying to use elasticsearch with my neo4j database for fast querying.I tried many sites but they are all old articles so i didn't get any clear idea. Steps I followed until now,

1. Installed neo4j
2. Installed elasticsearch
3. Copy pasted elastic search plugins into neo4j plugins folder

4. added this line into neo4j. properties file

   elasticsearch.host_name=http://localhost:9200
   

   elasticsearch.index_spec=people:Person(first_name,last_name), places:Place(name)

   Here my question is,

5. How elasticsearch and neo4j are integrated. Please clarify me on this.

I followed this ,

Link

Answer 1

You have to install Apoc procedures plugin (https://github.com/neo4j-contrib/neo4j-apoc-procedures). The documentation about ES integration is here : ES Integration with Apoc procedures

[edit]

• download and drop apoc.jar in plugins's Neo4j directory, regarding the targetted Neo4j version

• restart Neo4j

• in Neo4j Web browser, launch the following Cypher query to show all ES procedures:

  CALL apoc.help("apoc.es")

Sample query for logs:

CALL apoc.es.getRaw("localhost","_search?q=level:ERROR",null) 
YIELD value 
UNWIND value.hits.hits as hits
RETURN hits LIMIT 100

The recommanded way is to store the ES host in neo4j.conf by adding a key (after restart of Neo4j):

apoc.es.myKey.url=localhost

Then the query looks like:

CALL apoc.es.getRaw("myKey","_search?q=level:ERROR",null) 
YIELD value 
UNWIND value.hits.hits as hits
RETURN hits LIMIT 100