Fix Smile-SA#14 - First implementation of the search API with ES.

src/module-elasticsuite-core/Model/Search.php

@@ -0,0 +1,149 @@
+<?php
+/**
+ * DISCLAIMER
+ * Do not edit or add to this file if you wish to upgrade Smile Elastic Suite to newer
+ * versions in the future.
+ *
+ * @category  Smile
+ * @package   Smile\ElasticsuiteCore
+ * @author    Romain Ruaud <romain.ruaud@smile.fr>
+ * @copyright 2016 Smile
+ * @license   Open Software License ("OSL") v. 3.0
+ */
+
+namespace Smile\ElasticSuiteCore\Model;
+
+/**
+ * SearchInterface implementation using elasticsuite.
+ *
+ * @category Smile
+ * @package  Smile\ElasticsuiteCore
+ * @author   Romain Ruaud <romain.ruaud@smile.fr>
+ */
+class Search implements \Magento\Framework\Api\Search\SearchInterface
+{
+    /**
+     * @var \Smile\ElasticsuiteCore\Search\Request\Builder
+     */
+    private $requestBuilder;
+
+    /**
+     * @var \Magento\Framework\App\ScopeResolverInterface
+     */
+    private $scopeResolver;
+
+    /**
+     * @var \Magento\Search\Model\SearchEngine
+     */
+    private $searchEngine;
+
+    /**
+     * @var \Magento\Framework\Search\SearchResponseBuilder
+     */
+    private $searchResponseBuilder;
+
+    /**
+     * Constructor.
+     *
+     * @param \Magento\Framework\App\ScopeResolverInterface   $scopeResolver
+     * @param \Magento\Search\Model\SearchEngine              $searchEngine
+     * @param \Smile\ElasticsuiteCore\Search\Request\Builder  $requestBuilder
+     * @param \Magento\Framework\Search\SearchResponseBuilder $searchResponseBuilder
+     */
+    public function __construct(
+        \Magento\Framework\App\ScopeResolverInterface $scopeResolver,
+        \Magento\Search\Model\SearchEngine $searchEngine,
+        \Smile\ElasticsuiteCore\Search\Request\Builder $requestBuilder,
+        \Magento\Framework\Search\SearchResponseBuilder $searchResponseBuilder
+    ) {
+            $this->requestBuilder = $requestBuilder;
+            $this->scopeResolver  = $scopeResolver;
+            $this->searchEngine = $searchEngine;
+            $this->searchResponseBuilder = $searchResponseBuilder;
+    }
+
+
+    /**
+     * Execute search.
+     *
+     * @param \Magento\Framework\Api\Search\SearchCriteriaInterface $searchCriteria Search criteria.
+     *
+     * @return \Magento\Framework\Api\Search\SearchResultInterface
+     */
+    public function search(\Magento\Framework\Api\Search\SearchCriteriaInterface $searchCriteria)
+    {
+        $searchRequest  = $this->getSearchRequest($searchCriteria);
+        $searchResponse = $this->searchEngine->search($searchRequest);
+        $searchResult   = $this->searchResponseBuilder->build($searchResponse);
+
+        $totalCount = $searchResponse->count();
+        $searchResult->setTotalCount($totalCount);
+        $searchResult->setSearchCriteria($searchCriteria);
+
+        return $searchResult;
+    }
+
+    /**
+     *
+     * @param \Magento\Framework\Api\Search\SearchCriteriaInterface $searchCriteria
+     *
+     * @return \Smile\ElasticsuiteCore\Search\RequestInterface
+     */
+    private function getSearchRequest(\Magento\Framework\Api\Search\SearchCriteriaInterface $searchCriteria)
+    {
+        $request = $this->requestBuilder->create(
+            $this->scopeResolver->getScope()->getId(),
+            $searchCriteria->getRequestName(),
+            max(0, $searchCriteria->getPageSize() * ($searchCriteria->getCurrentPage() - 1)),
+            $searchCriteria->getPageSize(),
+            $this->getFulltextQuery($searchCriteria),
+            $this->getSortOrders($searchCriteria),
+            $this->getFilters($searchCriteria)
+        );
+
+        return $request;
+    }
+
+    /**
+     *
+     * @param \Magento\Framework\Api\Search\SearchCriteriaInterface $searchCriteria
+     *
+     * @return NULL|string
+     */
+    private function getFulltextQuery(\Magento\Framework\Api\Search\SearchCriteriaInterface $searchCriteria)
+    {
+        $fulltextQuery = null;
+
+        foreach ($searchCriteria->getFilterGroups() as $filterGroup) {
+            foreach ($filterGroup->getFilters() as $filter) {
+                if ($filter->getField() === 'search_term') {
+                    $fulltextQuery = $filter->getValue();
+                }
+            }
+        }
+
+        return $fulltextQuery;
+    }
+
+    /**
+     *
+     * @param \Magento\Framework\Api\Search\SearchCriteriaInterface $searchCriteria
+     */
+    private function getSortOrders(\Magento\Framework\Api\Search\SearchCriteriaInterface $searchCriteria)
+    {
+        $sort = [];
+        //@todo
+        return $sort;
+    }
+
+    /**
+     *
+     * @param \Magento\Framework\Api\Search\SearchCriteriaInterface $searchCriteria
+     */
+    private function getFilters(\Magento\Framework\Api\Search\SearchCriteriaInterface $searchCriteria)
+    {
+        $filters = [];
+        //@todo
+        return $filters;
+    }
+}

src/module-elasticsuite-core/Search/Adapter/Elasticsuite/Request/Query/Builder/Boolean.php

@@ -58,7 +58,13 @@ public function buildQuery(QueryInterface $query)
             $searchQuery['_cache'] = true;
         }
 
-        return ['bool' => $searchQuery];
+        $query = ['bool' => $searchQuery];
+
+        if (empty($searchQuery['must']) && empty($searchQuery['should']) && empty($searchQuery['must_not'])) {
+            $query = ['match_all' => new \stdClass()];
+        }
+
+        return $query;
     }
 
     /**

src/module-elasticsuite-core/etc/di.xml

@@ -55,6 +55,10 @@
 
     <preference for="Smile\ElasticsuiteCore\Api\Search\SpellcheckerInterface"
                 type="Smile\ElasticsuiteCore\Search\Adapter\Elasticsuite\Spellchecker" />
+
+
+    <preference for="Magento\Search\Api\SearchInterface"
+                type="Smile\ElasticsuiteCore\Model\Search" />
 
     <type name="Smile\ElasticsuiteCore\Search\Request\Query\QueryFactory">
         <arguments>