kununu/elasticsearch

Purpose

This package aims to

1. reduce cognitive load when interacting with Elasticsearch by providing an intuitive query language with a fluent interface while staying very close to Elasticsearch terminology
2. make your project independent of the underlying client library

Quickstart

It does not take a lot to get you up and running with Elasticsearch. All that's required is a Repository which can be used to execute requests (e.g. to save a document, query for documents, etc.)

<?php
declare(strict_types=1);

use Elasticsearch\ClientBuilder;
use Kununu\Elasticsearch\Query\Criteria\Filter;
use Kununu\Elasticsearch\Query\Criteria\Search;
use Kununu\Elasticsearch\Query\Query;
use Kununu\Elasticsearch\Repository\Repository;

// create very minimal client
$client = ClientBuilder::create()->build();

// create a new repository and bind it to my_index/my_type
$repository = new Repository(
    $client,
    [
        'index' => 'my_index',
        'type' => 'my_type',
    ]
);

// persist a document
$repository->save(
    'the_document_id',
    [
        'field_a' => 'foobar',
        'field_b' => true,
        'field_c' => 42,
    ]
);

// query for documents
$repository->findByQuery(
    Query::create(
        Filter::create('field_c', 42, Operator::GREATER_THAN_EQUALS),
        Search::create(['field_a'], 'looking for foobar')
    )
);

// delete a document
$repository->delete('the_document_id');

Technical Concept

The key features of this package are:

• Repositories
• Queries
• IndexManager

Repositories

Very similar to Entity Repositories in Doctrine, a Repository in this package is a class which encapsulates Elasticsearch specific logic - for a specific index.

Repositories execute queries against the index (and type) they are bound to.

More explanation and examples

Queries

This package provides an abstracted query language which makes it easy to write even complicated queries without headache. It hides the complexity of Elasticsearch Query DSL for the most common use-cases while stying extensible for advanced ones.

Various methods of the RepositoryInterface require an object of type QueryInterface as input. Therefore, any implementation of this interface can be used together with Repositories.

This package contains two implementations of the QueryInterface:

• Query
• RawQuery

IndexManager

This package provides easy access to a few commonly used Elasticsearch index management features like creating indices and managing aliases.

More explanation and examples

Version Matrix

This package is developed against and used on very specific versions of Elasticsearch and the official elasticsearch-php library. Any other version may or may not work.

kununu/elasticsearch	elasticsearch/elasticsearch-php	Elasticsearch	PHP
2.x	6.5.x	6.4	>=7.2, <8.0
3.x	7.x	7.9	>=7.2, <8.0
4.x	7.x	7.9	>=8.0
5.x	7.x	7.9	>=8.0
6.x	7.x	7.9	>=8.0
7.x	7.x	7.9	>=8.1

See also https://github.com/elastic/elasticsearch-php#version-matrix

Contributing

Please see CONTRIBUTING for details.