OpenSearch:Exemple de code pour implémenter les requêtes de défilement

export ALIBABA_CLOUD_ACCESS_KEY_ID=<access_key_id>
export ALIBABA_CLOUD_ACCESS_KEY_SECRET=<access_key_secret>

<?php
// Import the autoloader.
require_once("../OpenSearch/Autoloader/Autoloader.php");
use OpenSearch\Client\OpenSearchClient;

// Read credentials from environment variables.
// Set these variables before running the code. See "Set up environment variables".
$accessKeyId = getenv('ALIBABA_CLOUD_ACCESS_KEY_ID');
$secret = getenv('ALIBABA_CLOUD_ACCESS_KEY_SECRET');

// The API endpoint for your region. Find this on the application details page in the OpenSearch console.
$endPoint = '<region endPoint>';

// The name of your OpenSearch application.
$appName = '<app name>';

// The name of your drop-down suggestion model.
$suggestName = '<suggest name>';

// Enable debug mode to log request and response details.
$options = array('debug' => true);

// Create the client.
$client = new OpenSearchClient($accessKeyId, $secret, $endPoint, $options);

<?php
header("Content-Type:text/html;charset=utf-8");

// Import the configuration file created in the previous step.
require_once("Config.inc.php");
use OpenSearch\Client\SearchClient;
use OpenSearch\Util\SearchParamsBuilder;

$searchClient = new SearchClient($client);

// Build the initial query parameters.
$params = new SearchParamsBuilder();

// Number of documents to return per scroll batch. No offset is required.
$params->setHits(1);

// The name of your OpenSearch application.
$params->setAppName('The application name');

// The search query.
$params->setQuery("name: 'Search'");

// Response format. Supported values: JSON, FULLJSON.
$params->setFormat("fulljson");

// Sort by the primary key (INT type, ascending).
// Sorting by the primary key prevents duplicate results when data is updated during the scroll.
$params->addSort('id', SearchParamsBuilder::SORT_INCREASE);

// Filter condition.
$params->setFilter('id>0');

// Fields to include in the response.
$params->setFetchFields(array('id', 'name', 'phone', 'int_arr', 'literal_arr', 'float_arr', 'cate_id'));

// Stage 1: Submit the initial query.
// Set the scroll expiry to 3 minutes. The first query does not require a scroll ID.
// The response returns a scroll_id for subsequent queries and viewtotal (total matching documents).
$params->setScrollExpire('3m');
$ret = $searchClient->execute($params->build())->result;

// Stage 2: Retrieve subsequent batches using the scroll ID from each previous response.
// viewtotal is the total number of matching documents returned by the initial query.
for ($i = 0; $i < json_decode($ret)->result->viewtotal; $i++) {
    // Pass the scroll ID from the previous response.
    $params->setScrollId(json_decode($ret)->result->scroll_id);

    // Fetch the next batch.
    $ret = $searchClient->execute($params->build())->result;

    // Display the results.
    print_r($ret . '<br/><br/>');
}

Paramètres clés