MAGETWO-87785: Creation of attribute with new input type via API

Author: irenelagno

app/code/Magento/Catalog/Api/Data/ProductAttributeInterface.php

@@ -32,4 +32,9 @@ interface ProductAttributeInterface extends \Magento\Catalog\Api\Data\EavAttribu
     const CODE_TIER_PRICE_FIELD_VALUE_TYPE = 'value_type';
     const CODE_SEO_FIELD_META_DESCRIPTION = 'meta_description';
     const CODE_WEIGHT = 'weight';
+
+    /**
+     * @return \Magento\Eav\Api\Data\AttributeExtensionInterface
+     */
+    public function getExtensionAttributes();
 }

app/code/Magento/Catalog/Model/ResourceModel/Eav/Attribute.php

@@ -21,7 +21,6 @@
  * @method int setSearchWeight(int $value)
  * @method bool getIsUsedForPriceRules()
  * @method int setIsUsedForPriceRules(int $value)
- * @method \Magento\Eav\Api\Data\AttributeExtensionInterface getExtensionAttributes()
  *
  * @author      Magento Core Team <core@magentocommerce.com>
  * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
@@ -80,6 +79,11 @@ class Attribute extends \Magento\Eav\Model\Entity\Attribute implements
      */
     protected $_indexerEavProcessor;
 
+    /**
+     * @var \Magento\Eav\Api\Data\AttributeExtensionFactory
+     */
+    private $eavAttributeFactory;
+
     /**
      * @param \Magento\Framework\Model\Context $context
      * @param \Magento\Framework\Registry $registry
@@ -129,12 +133,15 @@ public function __construct(
         LockValidatorInterface $lockValidator,
         \Magento\Framework\Model\ResourceModel\AbstractResource $resource = null,
         \Magento\Framework\Data\Collection\AbstractDb $resourceCollection = null,
+        \Magento\Eav\Api\Data\AttributeExtensionFactory $eavAttributeFactory = null,
         array $data = []
     ) {
         $this->_indexerEavProcessor = $indexerEavProcessor;
         $this->_productFlatIndexerProcessor = $productFlatIndexerProcessor;
         $this->_productFlatIndexerHelper = $productFlatIndexerHelper;
         $this->attrLockValidator = $lockValidator;
+        $this->eavAttributeFactory = $eavAttributeFactory ?: \Magento\Framework\App\ObjectManager::getInstance()
+            ->get(\Magento\Eav\Api\Data\AttributeExtensionFactory::class);
         parent::__construct(
             $context,
             $registry,
@@ -887,4 +894,18 @@ public function setIsFilterableInGrid($isFilterableInGrid)
         $this->setData(self::IS_FILTERABLE_IN_GRID, $isFilterableInGrid);
         return $this;
     }
+
+    /**
+     * @return \Magento\Eav\Api\Data\AttributeExtensionInterface
+     */
+    public function getExtensionAttributes()
+    {
+        $extensionAttributes = $this->_getExtensionAttributes();
+        if (null === $extensionAttributes) {
+            /** @var \Magento\Eav\Api\Data\AttributeExtensionInterface $extensionAttributes */
+            $extensionAttributes = $this->eavAttributeFactory->create();
+            $this->setExtensionAttributes($extensionAttributes);
+        }
+        return $extensionAttributes;
+    }
 }

app/code/Magento/Eav/Api/Data/AttributeInterface.php

@@ -307,4 +307,14 @@ public function setValidationRules(array $validationRules = null);
      * @return \Magento\Eav\Api\Data\AttributeExtensionInterface|null
      */
     public function getExtensionAttributes();
+
+    /**
+     * Set an extension attributes object
+     *
+     * @param \Magento\Eav\Api\Data\AttributeExtensionInterface $extensionAttributes
+     * @return $this
+     */
+    public function setExtensionAttributes(
+        \Magento\Eav\Api\Data\AttributeExtensionInterface $extensionAttributes
+    );
 }

app/code/Magento/Eav/Model/Entity/Attribute.php

@@ -15,7 +15,6 @@
  *
  * @api
  * @method \Magento\Eav\Model\Entity\Attribute setOption($value)
- * @method \Magento\Eav\Api\Data\AttributeExtensionInterface getExtensionAttributes()
  * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  * @since 100.0.2
  */