README.md

In tomesch/elasticsearch: Simple Elasticsearch client for R

elasticsearch.R

(This project is no longer maintained, if you would like to take over feel free to send me an email)

Features (WIP)

Document APIs

• [x] Index
• [x] Get
• [x] Delete
• [x] Update
• [x] Multi-get
• [x] Bulk

Search APIs

• [x] Search

Indices APIs

• [x] Create index
• [x] Delete index
• [x] Indices Exists
• [x] Open / Close Index API

Installation

You will need the devtools package in order to install this package

install.packages("devtools")
library(devtools)
install_github("tomesch/elasticsearch")
library(elasticsearch)

Examples

For the following series of examples we will be using a simplifed version of the Unicode Character Database. The data is formated so that it can be directly indexed in Elasticsearch via a bulk query. You can download the database here.

Importing the data

# Read the database
requests = paste(readLines("/Users/tom/ucd.json"), collapse="\n")

# Create the client
es = ElasticsearchClient("http://localhost:9200")
# Index the data
bulk(es, requests)

CRUD operations

# Index a new document
index(es, "ucd", "characters", 1, body='{"cp": "9999", "na": "My new character", "age": "23", "blk": "ASCII"}')
# Get it
get(es, "ucd", "characters", 1)
# Update it
update(es, "ucd", "characters", 1, '{"doc" : { "age" : 24}}')
# Delete it
delete(es, "ucd", "characters", 1)

Search

# Search a character
search(es, body='{"query": {"match": {"na": "pile of poo"}}}')
# Run an aggregation
res = search(es, body='{"aggs" : {"blocks" : {"terms" : { "field" : "blk", "size": 0}}}}')
# And plot it
barplot(res$aggregations$blocks$buckets$doc_count)

tomesch/elasticsearch documentation built on May 31, 2019, 6:11 p.m.