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QueryAdapter

QueryAdapter is a powerful Laravel package that provides an intuitive abstraction layer for interacting with Elasticsearch indices. It includes a set of query builders designed for searching, aggregating, and suggesting data, while offering essential utilities for efficient index management. This package enables developers to work with Elasticsearch in a structured and efficient way, eliminating the complexity of low-level queries.

Installation

To get started, install the package via Composer:

composer require opsource/query-adapter

Usage

Setting Up

Before using the QueryAdapter package, ensure that your Elasticsearch client is properly configured. The package relies on ElasticClient to manage all Elasticsearch communications, ensuring smooth data indexing and retrieval.

Interacting with Indices

The InteractsWithIndex trait offers powerful methods to manage and query Elasticsearch indices efficiently.

Bulk Insert

Insert multiple documents into an Elasticsearch index in a single operation for improved performance:

$data = [
    ['index' => ['_id' => 1]],
    ['name' => 'Product A', 'price' => 100],
    ['index' => ['_id' => 2]],
    ['name' => 'Product B', 'price' => 200],
];

$result = $this->bulk($data);

Fetch Index Information

Retrieve detailed information about a specific index, including settings and mappings:

$indexInfo = $this->catIndices('my_index');

Delete an Index

Remove an index when it is no longer needed:

$result = $this->indicesDelete('my_index');

Create a New Index with Custom Settings

Define and create a new Elasticsearch index with custom settings:

$settings = [
    'settings' => [
        'number_of_shards' => 1,
        'number_of_replicas' => 1
    ]
];

$result = $this->indicesIndex('my_new_index', $settings);

Refresh an Index

Make recent operations visible to search queries:

$result = $this->indicesRefresh();

Querying Data

QueryAdapter simplifies querying with its builder-based approach.

Search Query

Perform a basic search query:

$query = $this->query()->match('name', 'Product A')->get();

Index Class Example

Create an index class similar to an Eloquent model:

use Ensi\LaravelElasticQuery\ElasticIndex;

class ProductsIndex extends ElasticIndex
{
    protected string $name = 'test_products';
    protected string $indicator = 'product_id';
}

Set a unique document attribute name for $indicator, which is used as an additional sort in search_after.

Query Example

Perform a search with complex filters and sorting:

$searchQuery = ProductsIndex::queryEngine();

$hits = $searchQuery
             ->where('rating', '>=', 5)
             ->whereDoesntHave('offers', fn(BoolQuery $queryEngine) => $queryEngine->where('seller_id', 10)->where('active', false))
             ->sortBy('rating', 'desc')
             ->sortByNested('offers', fn(SortableQuery $queryEngine) => $queryEngine->where('active', true)->sortBy('price', mode: 'min'))
             ->take(25)
             ->get();

Filtering

$searchQuery->where('field', 'value');
$searchQuery->where('field', '>', 'value'); // Operators: `=`, `!=`, `>`, `<`, `>=`, `<=`
$searchQuery->whereNot('field', 'value'); // Equivalent to `where('field', '!=', 'value')`
$searchQuery->whereIn('field', ['value1', 'value2']);
$searchQuery->whereNotIn('field', ['value1', 'value2']);
$searchQuery->whereNull('field');
$searchQuery->whereNotNull('field');

Nested Queries

$searchQuery->whereHas('nested_field', fn(BoolQuery $subQuery) => $subQuery->where('field_in_nested', 'value'));
$searchQuery->whereDoesntHave('nested_field', function (BoolQuery $subQuery) {
    $subQuery->whereHas('nested_field', fn(BoolQuery $subQuery2) => $subQuery2->whereNot('field', 'value'));
});

nested_field must have nested type. Subqueries can only use subdocument fields.

Full-Text Search

$searchQuery->whereMatch('field_one', 'queryEngine string');
$searchQuery->whereMultiMatch(['field_one^3', 'field_two'], 'queryEngine string', MatchType::MOST_FIELDS);

Sorting

$searchQuery->sortBy('field', SortOrder::DESC, SortMode::MAX, MissingValuesMode::FIRST);
$searchQuery->sortByNested('nested_field', fn(SortableQuery $subQuery) => $subQuery->where('field_in_nested', 'value')->sortBy('field'));

Use dedicated sort methods for each sort type:

$searchQuery->minSortBy('field', 'asc');
$searchQuery->maxSortBy('field', 'asc');
$searchQuery->avgSortBy('field', 'asc');
$searchQuery->sumSortBy('field', 'asc');
$searchQuery->medianSortBy('field', 'asc');

Pagination

Offset Pagination

$page = $searchQuery->paginate(15, 45);

Cursor Pagination

$page = $searchQuery->cursorPaginate(10);
$pageNext = $searchQuery->cursorPaginate(10, $page->next);

Aggregation

Create aggregation queries:

$aggQuery = ProductsIndex::aggregate();

$aggs = $aggQuery
            ->where('active', true)
            ->terms('codes', 'code')
            ->count('product_count', 'product_id')
            ->nested(
                'offers',
                fn(AggregationsBuilder $builder) => $builder->where('seller_id', 10)->minmax('price', 'price')
            );

Aggregate Types

$aggQuery->terms('agg_name', 'field', 25);
$aggQuery->minmax('agg_name', 'field');
$aggQuery->count('agg_name', 'field');

Suggesting

Create suggest queries for autocomplete or typo correction:

$sugQuery = ProductsIndex::suggest();
$suggests = $sugQuery->phrase('suggestName', 'name.trigram')->text('glves')->size(1)->shardSize(3)->get();

Suggester Types

Term Suggester:

$aggQuery->term('suggestName', 'name.trigram')->text('glves')->get();

Phrase Suggester:

$aggQuery->phrase('suggestName', 'name.trigram')->text('glves')->get();

CLI Commands

engine:make

Generates various engine components:

php artisan engine:make {type} [--model=] [--module=] [--index=] [--force] [--facade] [--job]

engine:make-facade

Generates a facade for a search engine model.

engine:make-directive

Creates a directive class for a search engine model.

Query Log

Enable query logging to track executed queries:

ElasticQuery::enableQueryLog();
$records = ElasticQuery::getQueryLog();
ElasticQuery::disableQueryLog();

Environment Variables

Configure the following environment variables:

ELASTICSEARCH_HOSTS=https://localhost:9200
ELASTICSEARCH_RETRIES=2
ELASTICSEARCH_USERNAME=admin
ELASTICSEARCH_PASSWORD=admin
ELASTICSEARCH_SSL_VERIFICATION=true

Elasticsearch Version Compatibility

Separate releases are created for Elasticsearch 7 and 8. Development for each version occurs in corresponding branches.

Contributing

See CONTRIBUTING for details.

License

MIT License. See LICENSE.md for more information.

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