MAGETWO-88962: [UI Component] URL Input: Product Link

Author: irenelagno

app/code/Magento/Catalog/Model/ProductLink/Search.php

@@ -51,7 +51,10 @@ public function __construct(
      * @param int $limit
      * @return \Magento\Catalog\Model\ResourceModel\Product\Collection
      */
-    public function prepareCollection(string $searchKey, int $pageNum, int $limit
+    public function prepareCollection(
+        string $searchKey,
+        int $pageNum,
+        int $limit
     ): \Magento\Catalog\Model\ResourceModel\Product\Collection {
         $productCollection = $this->productCollectionFactory->create();
         $productCollection->addAttributeToSelect(ProductInterface::NAME);

app/code/Magento/Catalog/Ui/DataProvider/Product/AddSearchKeyConditionToCollection.php

@@ -22,12 +22,15 @@ class AddSearchKeyConditionToCollection implements AddFilterToCollectionInterfac
      *
      * @SuppressWarnings(PHPMD.UnusedFormalParameter)
      */
-    public function addFilter(Collection $collection, $field, $condition = null) {
+    public function addFilter(Collection $collection, $field, $condition = null) : void
+    {
         if (isset($condition['fulltext']) && !empty($condition['fulltext'])) {
             $collection->addFieldToFilter(
-                ProductInterface::NAME, $condition['fulltext']
+                ProductInterface::NAME,
+                $condition['fulltext']
             )->addFieldToFilter(
-                ProductInterface::SKU, $condition['fulltext']
+                ProductInterface::SKU,
+                $condition['fulltext']
             );
         }
     }

app/code/Magento/CatalogInventory/Model/Plugin/ProductSearch.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+declare(strict_types=1);
+
+namespace Magento\CatalogInventory\Model\Plugin;
+
+use Magento\CatalogInventory\Helper\Stock;
+use Magento\CatalogInventory\Model\Configuration;
+
+class ProductSearch
+{
+    /**
+     * @var Configuration
+     */
+    private $configuration;
+
+    /**
+     * @var Stock
+     */
+    private $stockHelper;
+
+    /**
+     * ProductLinks constructor.
+     *
+     * @param Configuration $configuration
+     * @param Stock $stockHelper
+     */
+    public function __construct(Configuration $configuration, Stock $stockHelper)
+    {
+        $this->configuration = $configuration;
+        $this->stockHelper = $stockHelper;
+    }
+
+    /**
+     * @param \Magento\Catalog\Model\ProductLink\Search $subject
+     * @param \Magento\Catalog\Model\ResourceModel\Product\Collection $collection
+     * @return \Magento\Catalog\Model\ResourceModel\Product\Collection
+     * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+     */
+    public function afterPrepareCollection(
+        \Magento\Catalog\Model\ProductLink\Search $subject,
+        \Magento\Catalog\Model\ResourceModel\Product\Collection $collection
+    ): \Magento\Catalog\Model\ResourceModel\Product\Collection {
+        $this->stockHelper->addIsInStockFilterToCollection($collection);
+        return $collection;
+    }
+}

app/code/Magento/CatalogInventory/etc/adminhtml/di.xml

@@ -39,4 +39,7 @@
             </argument>
         </arguments>
     </virtualType>
+    <type name="Magento\Catalog\Model\ProductLink\Search">
+        <plugin name="processOutOfStockProducts" type="Magento\CatalogInventory\Model\Plugin\ProductSearch"/>
+    </type>
 </config>