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3. Query builder

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Basem Khirat edited this page Jul 23, 2017 · 1 revision

Creating a new index

ES::create("my_index");
    
# or 
    
ES::index("my_index")->create();
Creating index with custom options (optional)
ES::index("my_index")->create(function($index){
        
    $index->shards(5)->replicas(1)->mapping([
        'my_type' => [
            'properties' => [
                'first_name' => [
                    'type' => 'string',
                ],
                'age' => [
                    'type' => 'integer'
                ]
            ]
        ]
    ])
    
});
    
# or
    
ES::create("my_index", function($index){
  
      $index->shards(5)->replicas(1)->mapping([
          'my_type' => [
              'properties' => [
                  'first_name' => [
                      'type' => 'string',
                  ],
                  'age' => [
                      'type' => 'integer'
                  ]
              ]
          ]
      ])
  
});

Dropping index

ES::drop("my_index");
    
# or
    
ES::index("my_index")->drop();

Running queries

$documents = ES::connection("default")
                ->index("my_index")
                ->type("my_type")
                ->get();    # return a collection of results

You can rewrite the above query to

$documents = ES::type("my_type")->get();    # return a collection of results

The query builder will use the default connection, index name in configuration file es.php.

Connection and index names in query overrides connection and index names in configuration file es.php.

Getting document by id
ES::type("my_type")->id(3)->first();
    
# or
    
ES::type("my_type")->_id(3)->first();
Sorting
ES::type("my_type")->orderBy("created_at", "desc")->get();
    
# Sorting with text search score
    
ES::type("my_type")->orderBy("_score")->get();
Limit and offset
ES::type("my_type")->take(10)->skip(5)->get();
Select only specific fields
ES::type("my_type")->select("title", "content")->take(10)->skip(5)->get();
Where clause
ES::type("my_type")->where("status", "published")->get();

# or

ES::type("my_type")->where("status", "=", "published")->get();
Where greater than
ES::type("my_type")->where("views", ">", 150)->get();
Where greater than or equal
ES::type("my_type")->where("views", ">=", 150)->get();
Where less than
ES::type("my_type")->where("views", "<", 150)->get();
Where less than or equal
ES::type("my_type")->where("views", "<=", 150)->get();
Where like
ES::type("my_type")->where("title", "like", "foo")->get();
Where field exists
ES::type("my_type")->where("hobbies", "exists", true)->get(); 

# or 

ES::type("my_type")->whereExists("hobbies", true)->get();
Where in clause
ES::type("my_type")->whereIn("id", [100, 150])->get();
Where between clause
ES::type("my_type")->whereBetween("id", 100, 150)->get();

# or 

ES::type("my_type")->whereBetween("id", [100, 150])->get();
Where not clause
ES::type("my_type")->whereNot("status", "published")->get(); 

# or

ES::type("my_type")->whereNot("status", "=", "published")->get();
Where not greater than
ES::type("my_type")->whereNot("views", ">", 150)->get();
Where not greater than or equal
ES::type("my_type")->whereNot("views", ">=", 150)->get();
Where not less than
ES::type("my_type")->whereNot("views", "<", 150)->get();
Where not less than or equal
ES::type("my_type")->whereNot("views", "<=", 150)->get();
Where not like
ES::type("my_type")->whereNot("title", "like", "foo")->get();
Where not field exists
ES::type("my_type")->whereNot("hobbies", "exists", true)->get(); 

# or

ES::type("my_type")->whereExists("hobbies", true)->get();
Where not in clause
ES::type("my_type")->whereNotIn("id", [100, 150])->get();
Where not between clause
ES::type("my_type")->whereNotBetween("id", 100, 150)->get();

# or

ES::type("my_type")->whereNotBetween("id", [100, 150])->get();
Search by a distance from a geo point
ES::type("my_type")->distance("location", ["lat" => -33.8688197, "lon" => 151.20929550000005], "10km")->get();

# or

ES::type("my_type")->distance("location", "-33.8688197,151.20929550000005", "10km")->get();

# or

ES::type("my_type")->distance("location", [151.20929550000005, -33.8688197], "10km")->get();
Search using array queries
ES::type("my_type")->body([
    "query" => [
         "bool" => [
             "must" => [
                 [ "match" => [ "address" => "mill" ] ],
                 [ "match" => [ "address" => "lane" ] ]
             ]
         ]
     ]
])->get();

# Note that you can mix between query builder and array queries.
# The query builder will will be merged with the array query.

ES::type("my_type")->body([

	"_source" => ["content"]
	
	"query" => [
	     "bool" => [
	         "must" => [
	             [ "match" => [ "address" => "mill" ] ]
	         ]
	     ]
	],
	   
	"sort" => [
		"_score"
	]
     
])->select("name")->orderBy("created_at", "desc")->take(10)->skip(5)->get();

# The result query will be
/*
Array
(
    [index] => my_index
    [type] => my_type
    [body] => Array
        (
            [_source] => Array
                (
                    [0] => content
                    [1] => name
                )
            [query] => Array
                (
                    [bool] => Array
                        (
                            [must] => Array
                                (
                                    [0] => Array
                                        (
                                            [match] => Array
                                                (
                                                    [address] => mill
                                                )
                                        )
                                )
                        )
                )
            [sort] => Array
                (
                    [0] => _score
                    [1] => Array
                        (
                            [created_at] => desc
                        )
                )
        )
    [from] => 5
    [size] => 10
    [client] => Array
        (
            [ignore] => Array
                (
                )
        )
)
*/
Search the entire document
ES::type("my_type")->search("hello")->get();
    
# search with Boost = 2
    
ES::type("my_type")->search("hello", 2)->get();

# search within specific fields with different weights

ES::type("my_type")->search("hello", function($search){
	$search->boost(2)->fields(["title" => 2, "content" => 1])
})->get();
Return only first record
ES::type("my_type")->search("hello")->first();
Return only count
ES::type("my_type")->search("hello")->count();
Scan-and-Scroll queries
# These queries are suitable for large amount of data. 
# A scrolled search allows you to do an initial search and to keep pulling batches of results
# from Elasticsearch until there are no more results left.
# It’s a bit like a cursor in a traditional database
    
$documents = ES::type("my_type")->search("hello")
                 ->scroll("2m")
                 ->take(1000)
                 ->get();

# Response will contain a hashed code `scroll_id` will be used to get the next result by running

$documents = ES::type("my_type")->search("hello")
                 ->scroll("2m")
                 ->scrollID("DnF1ZXJ5VGhlbkZldGNoBQAAAAAAAAFMFlJQOEtTdnJIUklhcU1FX2VqS0EwZncAAAAAAAABSxZSUDhLU3ZySFJJYXFNRV9laktBMGZ3AAAAAAAAAU4WUlA4S1N2ckhSSWFxTUVfZWpLQTBmdwAAAAAAAAFPFlJQOEtTdnJIUklhcU1FX2VqS0EwZncAAAAAAAABTRZSUDhLU3ZySFJJYXFNRV9laktBMGZ3")
                 ->get();

# And so on ...
# Note that you don't need to write the query parameters in every scroll. All you need the `scroll_id` and query scroll time.
    
# To clear `scroll_id` 
  
ES::type("my_type")->scrollID("DnF1ZXJ5VGhlbkZldGNoBQAAAAAAAAFMFlJQOEtTdnJIUklhcU1FX2VqS0EwZncAAAAAAAABSxZSUDhLU3ZySFJJYXFNRV9laktBMGZ3AAAAAAAAAU4WUlA4S1N2ckhSSWFxTUVfZWpLQTBmdwAAAAAAAAFPFlJQOEtTdnJIUklhcU1FX2VqS0EwZncAAAAAAAABTRZSUDhLU3ZySFJJYXFNRV9laktBMGZ3")
        ->clear();
Paginate results with 5 records per page
$documents = ES::type("my_type")->search("hello")->paginate(5);
    
# Getting pagination links
    
$documents->links();

# Bootstrap 4 pagination

$documents->links("bootstrap-4");

# Simple bootstrap 4 pagination

$documents->links("simple-bootstrap-4");

# Simple pagination

$documents->links("simple-default");

These are all pagination methods you may use:

$documents->count()
$documents->currentPage()
$documents->firstItem()
$documents->hasMorePages()
$documents->lastItem()
$documents->lastPage()
$documents->nextPageUrl()
$documents->perPage()
$documents->previousPageUrl()
$documents->total()
$documents->url($page)
Getting the query array without execution
ES::type("my_type")->search("hello")->where("views", ">", 150)->query();
Getting the original elasticsearch response
ES::type("my_type")->search("hello")->where("views", ">", 150)->response();
Ignoring bad HTTP response
ES::type("my_type")->ignore(404, 500)->id(5)->first();
Query Caching (Laravel & Lumen)

Package comes with a built-in caching layer based on laravel cache.

ES::type("my_type")->search("hello")->remember(10)->get();
	
# Specify a custom cache key

ES::type("my_type")->search("hello")->remember(10, "last_documents")->get();
	
# Caching using other available driver
	
ES::type("my_type")->search("hello")->cacheDriver("redis")->remember(10, "last_documents")->get();
	
# Caching with cache key prefix
	
ES::type("my_type")->search("hello")->cacheDriver("redis")->cachePrefix("docs")->remember(10, "last_documents")->get();
Executing elasticsearch raw queries
ES::raw()->search([
    "index" => "my_index",
    "type"  => "my_type",
    "body" => [
        "query" => [
            "bool" => [
                "must" => [
                    [ "match" => [ "address" => "mill" ] ],
                    [ "match" => [ "address" => "lane" ] ]
                ]
            ]
        ]
    ]
]);
Insert a new document
ES::type("my_type")->id(3)->insert([
    "title" => "Test document",
    "content" => "Sample content"
]);
     
# A new document will be inserted with _id = 3.
  
# [id is optional] if not specified, a unique hash key will be generated.
Bulk insert a multiple of documents at once.
# Main query

ES::index("my_index")->type("my_type")->bulk(function ($bulk){

    # Sub queries

	$bulk->index("my_index_1")->type("my_type_1")->id(10)->insert(["title" => "Test document 1","content" => "Sample content 1"]);
	$bulk->index("my_index_2")->id(11)->insert(["title" => "Test document 2","content" => "Sample content 2"]);
	$bulk->id(12)->insert(["title" => "Test document 3", "content" => "Sample content 3"]);
	
});

# Notes from the above query:

# As index and type names are required for insertion, Index and type names are extendable. This means that: 

# If index() is not specified in subquery:
# -- The builder will get index name from the main query.
# -- if index is not specified in main query, the builder will get index name from configuration file.

# And

# If type() is not specified in subquery:
# -- The builder will get type name from the main query.

# you can use old bulk code style using multidimensional array of [id => data] pairs
 
ES::type("my_type")->bulk([
 
	10 => [
		"title" => "Test document 1",
		"content" => "Sample content 1"
	],
	 
	11 => [
		"title" => "Test document 2",
		"content" => "Sample content 2"
	]
 
]);
 
# The two given documents will be inserted with its associated ids
Update an existing document
ES::type("my_type")->id(3)->update([
   "title" => "Test document",
   "content" => "sample content"
]);
    
# Document has _id = 3 will be updated.
    
# [id is required]
# Bulk update

ES::type("my_type")->bulk(function ($bulk){
    $bulk->id(10)->update(["title" => "Test document 1","content" => "Sample content 1"]);
    $bulk->id(11)->update(["title" => "Test document 2","content" => "Sample content 2"]);
});
Incrementing field
ES::type("my_type")->id(3)->increment("views");
    
# Document has _id = 3 will be incremented by 1.
    
ES::type("my_type")->id(3)->increment("views", 3);
    
# Document has _id = 3 will be incremented by 3.

# [id is required]
Decrementing field
ES::type("my_type")->id(3)->decrement("views");
    
# Document has _id = 3 will be decremented by 1.
    
ES::type("my_type")->id(3)->decrement("views", 3);
    
# Document has _id = 3 will be decremented by 3.

# [id is required]
Update using script
# increment field by script
    
ES::type("my_type")->id(3)->script(
    "ctx._source.$field += params.count",
    ["count" => 1]
);
    
# add php tag to tags array list
    
ES::type("my_type")->id(3)->script(
    "ctx._source.tags.add(params.tag)",
    ["tag" => "php"]
);
    
# delete the doc if the tags field contain mongodb, otherwise it does nothing (noop)
    
ES::type("my_type")->id(3)->script(
    "if (ctx._source.tags.contains(params.tag)) { ctx.op = 'delete' } else { ctx.op = 'none' }",
    ["tag" => "mongodb"]
);
Delete a document
ES::type("my_type")->id(3)->delete();
    
# Document has _id = 3 will be deleted.
    
# [id is required]
# Bulk delete

ES::type("my_type")->bulk(function ($bulk){
    $bulk->id(10)->delete();
    $bulk->id(11)->delete();
});
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