From 2d6244ebc7d721b860817ab9597758c182dc7292 Mon Sep 17 00:00:00 2001
From: vitaliyboyko <vitaliyboyko@i.ua>
Date: Tue, 15 May 2018 21:06:35 +0300
Subject: [PATCH 1/5] Removed InventoryCache dependency on Inventory

---
 .../Indexer/Source/SourceItemIndexer/CacheFlush.php         | 2 +-
 app/code/Magento/InventoryCache/composer.json               | 3 ---
 app/code/Magento/InventoryCache/etc/di.xml                  | 6 ------
 .../Model/ResourceModel/GetProductIdsBySourceItemIds.php    | 2 +-
 app/code/Magento/InventoryIndexer/etc/di.xml                | 6 ++++++
 5 files changed, 8 insertions(+), 11 deletions(-)
 rename app/code/Magento/{InventoryCache => InventoryIndexer}/Model/ResourceModel/GetProductIdsBySourceItemIds.php (97%)

diff --git a/app/code/Magento/InventoryCache/Plugin/InventoryIndexer/Indexer/Source/SourceItemIndexer/CacheFlush.php b/app/code/Magento/InventoryCache/Plugin/InventoryIndexer/Indexer/Source/SourceItemIndexer/CacheFlush.php
index 6b3fa13da92bd..5da92eb0d8bb4 100644
--- a/app/code/Magento/InventoryCache/Plugin/InventoryIndexer/Indexer/Source/SourceItemIndexer/CacheFlush.php
+++ b/app/code/Magento/InventoryCache/Plugin/InventoryIndexer/Indexer/Source/SourceItemIndexer/CacheFlush.php
@@ -8,7 +8,7 @@
 namespace Magento\InventoryCache\Plugin\InventoryIndexer\Indexer\Source\SourceItemIndexer;
 
 use Magento\InventoryCache\Model\FlushCacheByProductIds;
-use Magento\InventoryCache\Model\ResourceModel\GetProductIdsBySourceItemIds;
+use Magento\InventoryIndexer\Model\ResourceModel\GetProductIdsBySourceItemIds;
 use Magento\InventoryIndexer\Indexer\SourceItem\SourceItemIndexer;
 
 /**
diff --git a/app/code/Magento/InventoryCache/composer.json b/app/code/Magento/InventoryCache/composer.json
index 10943df36314b..211321cb38196 100644
--- a/app/code/Magento/InventoryCache/composer.json
+++ b/app/code/Magento/InventoryCache/composer.json
@@ -8,9 +8,6 @@
         "magento/module-inventory-catalog-api": "*",
         "magento/module-inventory-indexer": "*"
     },
-    "suggest": {
-        "magento/module-inventory": "*"
-    },
     "type": "magento2-module",
     "license": [
         "OSL-3.0",
diff --git a/app/code/Magento/InventoryCache/etc/di.xml b/app/code/Magento/InventoryCache/etc/di.xml
index 5c386c920d767..855c467f103de 100644
--- a/app/code/Magento/InventoryCache/etc/di.xml
+++ b/app/code/Magento/InventoryCache/etc/di.xml
@@ -12,10 +12,4 @@
     <type name="Magento\InventoryIndexer\Indexer\SourceItem\SourceItemIndexer">
         <plugin name="invalidate_products_cache" type="Magento\InventoryCache\Plugin\InventoryIndexer\Indexer\Source\SourceItemIndexer\CacheFlush"/>
     </type>
-    <type name="Magento\InventoryCache\Model\ResourceModel\GetProductIdsBySourceItemIds">
-        <arguments>
-            <argument name="tableNameSourceItem" xsi:type="const">Magento\Inventory\Model\ResourceModel\SourceItem::TABLE_NAME_SOURCE_ITEM</argument>
-            <argument name="sourceItemIdFieldName" xsi:type="const">Magento\Inventory\Model\ResourceModel\SourceItem::ID_FIELD_NAME</argument>
-        </arguments>
-    </type>
 </config>
diff --git a/app/code/Magento/InventoryCache/Model/ResourceModel/GetProductIdsBySourceItemIds.php b/app/code/Magento/InventoryIndexer/Model/ResourceModel/GetProductIdsBySourceItemIds.php
similarity index 97%
rename from app/code/Magento/InventoryCache/Model/ResourceModel/GetProductIdsBySourceItemIds.php
rename to app/code/Magento/InventoryIndexer/Model/ResourceModel/GetProductIdsBySourceItemIds.php
index 12e72e93762fa..ac1316c68548c 100644
--- a/app/code/Magento/InventoryCache/Model/ResourceModel/GetProductIdsBySourceItemIds.php
+++ b/app/code/Magento/InventoryIndexer/Model/ResourceModel/GetProductIdsBySourceItemIds.php
@@ -5,7 +5,7 @@
  */
 declare(strict_types=1);
 
-namespace Magento\InventoryCache\Model\ResourceModel;
+namespace Magento\InventoryIndexer\Model\ResourceModel;
 
 use Magento\Catalog\Api\Data\ProductInterface;
 use Magento\Framework\App\ResourceConnection;
diff --git a/app/code/Magento/InventoryIndexer/etc/di.xml b/app/code/Magento/InventoryIndexer/etc/di.xml
index 30aec2ce542af..21553eafea042 100644
--- a/app/code/Magento/InventoryIndexer/etc/di.xml
+++ b/app/code/Magento/InventoryIndexer/etc/di.xml
@@ -56,4 +56,10 @@
             <argument name="dimensionName" xsi:type="string">stock_</argument>
         </arguments>
     </type>
+    <type name="Magento\InventoryIndexer\Model\ResourceModel\GetProductIdsBySourceItemIds">
+        <arguments>
+            <argument name="tableNameSourceItem" xsi:type="const">Magento\Inventory\Model\ResourceModel\SourceItem::TABLE_NAME_SOURCE_ITEM</argument>
+            <argument name="sourceItemIdFieldName" xsi:type="const">Magento\Inventory\Model\ResourceModel\SourceItem::ID_FIELD_NAME</argument>
+        </arguments>
+    </type>
 </config>

From 7f0e4c1f1598f17ff49c26753468cf802fb0db16 Mon Sep 17 00:00:00 2001
From: vitaliyboyko <vitaliyboyko@i.ua>
Date: Wed, 16 May 2018 14:43:06 +0300
Subject: [PATCH 2/5] Declared missing dependency

---
 app/code/Magento/InventoryIndexer/composer.json | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/app/code/Magento/InventoryIndexer/composer.json b/app/code/Magento/InventoryIndexer/composer.json
index a28e391e6492c..d3811da430bcf 100644
--- a/app/code/Magento/InventoryIndexer/composer.json
+++ b/app/code/Magento/InventoryIndexer/composer.json
@@ -9,7 +9,8 @@
         "magento/module-inventory-api": "*",
         "magento/module-inventory-catalog-api": "*",
         "magento/module-inventory-sales-api": "*",
-        "magento/module-inventory-sales": "*"
+        "magento/module-inventory-sales": "*",
+        "magento/module-catalog": "*"
     },
     "type": "magento2-module",
     "license": [

From 389306c7f44e3655fe7b5c9b5cd1418abc92deff Mon Sep 17 00:00:00 2001
From: vitaliyboyko <vitaliyboyko@i.ua>
Date: Thu, 17 May 2018 19:31:01 +0300
Subject: [PATCH 3/5] Removed InventoryCache and InventoryIndexer dependencies
 on catalog

---
 .../ResourceModel/GetProductIdsByStockIds.php | 23 +++++++++++++++----
 app/code/Magento/InventoryCache/composer.json |  4 +++-
 app/code/Magento/InventoryCache/etc/di.xml    |  6 +++++
 .../GetProductIdsBySourceItemIds.php          | 13 ++++++++---
 .../Magento/InventoryIndexer/composer.json    |  4 +++-
 app/code/Magento/InventoryIndexer/etc/di.xml  |  1 +
 6 files changed, 42 insertions(+), 9 deletions(-)

diff --git a/app/code/Magento/InventoryCache/Model/ResourceModel/GetProductIdsByStockIds.php b/app/code/Magento/InventoryCache/Model/ResourceModel/GetProductIdsByStockIds.php
index e4a39b2f3a7f9..90fc28e454ca9 100644
--- a/app/code/Magento/InventoryCache/Model/ResourceModel/GetProductIdsByStockIds.php
+++ b/app/code/Magento/InventoryCache/Model/ResourceModel/GetProductIdsByStockIds.php
@@ -7,7 +7,6 @@
 
 namespace Magento\InventoryCache\Model\ResourceModel;
 
-use Magento\Catalog\Api\Data\ProductInterface;
 use Magento\Framework\App\ResourceConnection;
 use Magento\Framework\EntityManager\MetadataPool;
 use Magento\InventoryCatalogApi\Api\DefaultStockProviderInterface;
@@ -44,25 +43,41 @@ class GetProductIdsByStockIds
      */
     private $indexStructure;
 
+    /**
+     * @var string
+     */
+    private $productSkuColumn;
+
+    /**
+     * @var string
+     */
+    private $productInterfaceClassName;
+
     /**
      * @param ResourceConnection $resource
      * @param MetadataPool $metadataPool
      * @param StockIndexTableNameResolverInterface $stockIndexTableNameResolver
      * @param DefaultStockProviderInterface $defaultStockProvider
      * @param IndexStructure $indexStructure
+     * @param $productSkuColumn
+     * @param $productInterfaceClassName
      */
     public function __construct(
         ResourceConnection $resource,
         MetadataPool $metadataPool,
         StockIndexTableNameResolverInterface $stockIndexTableNameResolver,
         DefaultStockProviderInterface $defaultStockProvider,
-        IndexStructure $indexStructure
+        IndexStructure $indexStructure,
+        $productSkuColumn,
+        $productInterfaceClassName
     ) {
         $this->resource = $resource;
         $this->metadataPool = $metadataPool;
         $this->defaultStockProvider = $defaultStockProvider;
         $this->indexStructure = $indexStructure;
         $this->stockIndexTableNameResolver = $stockIndexTableNameResolver;
+        $this->productSkuColumn = $productSkuColumn;
+        $this->productInterfaceClassName = $productInterfaceClassName;
     }
 
     /**
@@ -78,14 +93,14 @@ public function execute(array $stockIds): array
                 continue;
             }
             $stockIndexTableName = $this->stockIndexTableNameResolver->execute($stockId);
-            $entityMetadata = $this->metadataPool->getMetadata(ProductInterface::class);
+            $entityMetadata = $this->metadataPool->getMetadata($this->productInterfaceClassName);
             $linkField = $entityMetadata->getLinkField();
             $connection = $this->resource->getConnection();
             $sql = $connection->select()
                 ->from(['main' => $stockIndexTableName], [])
                 ->join(
                     ['product' => $this->resource->getTableName('catalog_product_entity')],
-                    'product.' . ProductInterface::SKU . '=main.' . ProductInterface::SKU,
+                    'product.' . $this->productSkuColumn . '=main.' . $this->productSkuColumn,
                     [$linkField]
                 );
 
diff --git a/app/code/Magento/InventoryCache/composer.json b/app/code/Magento/InventoryCache/composer.json
index 211321cb38196..43c12b4f9f42b 100644
--- a/app/code/Magento/InventoryCache/composer.json
+++ b/app/code/Magento/InventoryCache/composer.json
@@ -4,10 +4,12 @@
     "require": {
         "php": "~7.1.3||~7.2.0",
         "magento/framework": "*",
-        "magento/module-catalog": "*",
         "magento/module-inventory-catalog-api": "*",
         "magento/module-inventory-indexer": "*"
     },
+    "suggest": {
+        "magento/module-catalog": "*"
+    },
     "type": "magento2-module",
     "license": [
         "OSL-3.0",
diff --git a/app/code/Magento/InventoryCache/etc/di.xml b/app/code/Magento/InventoryCache/etc/di.xml
index 855c467f103de..5686c12a84ac7 100644
--- a/app/code/Magento/InventoryCache/etc/di.xml
+++ b/app/code/Magento/InventoryCache/etc/di.xml
@@ -12,4 +12,10 @@
     <type name="Magento\InventoryIndexer\Indexer\SourceItem\SourceItemIndexer">
         <plugin name="invalidate_products_cache" type="Magento\InventoryCache\Plugin\InventoryIndexer\Indexer\Source\SourceItemIndexer\CacheFlush"/>
     </type>
+    <type name="Magento\InventoryCache\Model\ResourceModel\GetProductIdsByStockIds">
+        <arguments>
+            <argument name="productSkuColumn" xsi:type="const">Magento\Catalog\Api\Data\ProductInterface::SKU</argument>
+            <argument name="productInterfaceClassName" xsi:type="const">Magento\Catalog\Api\Data\ProductInterface</argument>
+        </arguments>
+    </type>
 </config>
diff --git a/app/code/Magento/InventoryIndexer/Model/ResourceModel/GetProductIdsBySourceItemIds.php b/app/code/Magento/InventoryIndexer/Model/ResourceModel/GetProductIdsBySourceItemIds.php
index ac1316c68548c..70742195bd4b3 100644
--- a/app/code/Magento/InventoryIndexer/Model/ResourceModel/GetProductIdsBySourceItemIds.php
+++ b/app/code/Magento/InventoryIndexer/Model/ResourceModel/GetProductIdsBySourceItemIds.php
@@ -7,7 +7,6 @@
 
 namespace Magento\InventoryIndexer\Model\ResourceModel;
 
-use Magento\Catalog\Api\Data\ProductInterface;
 use Magento\Framework\App\ResourceConnection;
 use Magento\Framework\EntityManager\MetadataPool;
 
@@ -36,6 +35,11 @@ class GetProductIdsBySourceItemIds
      */
     private $sourceItemIdFieldName;
 
+    /**
+     * @var string
+     */
+    private $productInterfaceClassName;
+
     /**
      * GetProductIdsByStockIds constructor.
      *
@@ -43,17 +47,20 @@ class GetProductIdsBySourceItemIds
      * @param MetadataPool $metadataPool
      * @param string $tableNameSourceItem
      * @param string $sourceItemIdFieldName
+     * @param $productInterfaceClassName
      */
     public function __construct(
         ResourceConnection $resource,
         MetadataPool $metadataPool,
         $tableNameSourceItem,
-        $sourceItemIdFieldName
+        $sourceItemIdFieldName,
+        $productInterfaceClassName
     ) {
         $this->resource = $resource;
         $this->metadataPool = $metadataPool;
         $this->tableNameSourceItem = $tableNameSourceItem;
         $this->sourceItemIdFieldName = $sourceItemIdFieldName;
+        $this->productInterfaceClassName = $productInterfaceClassName;
     }
 
     /**
@@ -65,7 +72,7 @@ public function __construct(
      */
     public function execute(array $sourceItemIds): array
     {
-        $productLinkField = $this->metadataPool->getMetadata(ProductInterface::class)->getLinkField();
+        $productLinkField = $this->metadataPool->getMetadata($this->productInterfaceClassName)->getLinkField();
         $connection = $this->resource->getConnection();
         $sourceItemTable = $this->resource->getTableName($this->tableNameSourceItem);
         $select = $connection->select()
diff --git a/app/code/Magento/InventoryIndexer/composer.json b/app/code/Magento/InventoryIndexer/composer.json
index d3811da430bcf..176ba4b03278a 100644
--- a/app/code/Magento/InventoryIndexer/composer.json
+++ b/app/code/Magento/InventoryIndexer/composer.json
@@ -9,7 +9,9 @@
         "magento/module-inventory-api": "*",
         "magento/module-inventory-catalog-api": "*",
         "magento/module-inventory-sales-api": "*",
-        "magento/module-inventory-sales": "*",
+        "magento/module-inventory-sales": "*"
+    },
+    "suggest": {
         "magento/module-catalog": "*"
     },
     "type": "magento2-module",
diff --git a/app/code/Magento/InventoryIndexer/etc/di.xml b/app/code/Magento/InventoryIndexer/etc/di.xml
index 21600cc7f0327..2a731cbe88086 100644
--- a/app/code/Magento/InventoryIndexer/etc/di.xml
+++ b/app/code/Magento/InventoryIndexer/etc/di.xml
@@ -60,6 +60,7 @@
         <arguments>
             <argument name="tableNameSourceItem" xsi:type="const">Magento\Inventory\Model\ResourceModel\SourceItem::TABLE_NAME_SOURCE_ITEM</argument>
             <argument name="sourceItemIdFieldName" xsi:type="const">Magento\Inventory\Model\ResourceModel\SourceItem::ID_FIELD_NAME</argument>
+            <argument name="productInterfaceClassName" xsi:type="const">Magento\Catalog\Api\Data\ProductInterface</argument>
         </arguments>
     </type>
 </config>

From 1f9dd5e8ac69a31b9e3e2ad30a51e494d28e8b42 Mon Sep 17 00:00:00 2001
From: vitaliyboyko <vitaliyboyko@i.ua>
Date: Thu, 17 May 2018 21:07:16 +0300
Subject: [PATCH 4/5] Fixed arguments types

---
 app/code/Magento/InventoryCache/etc/di.xml   | 2 +-
 app/code/Magento/InventoryIndexer/etc/di.xml | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/app/code/Magento/InventoryCache/etc/di.xml b/app/code/Magento/InventoryCache/etc/di.xml
index 5686c12a84ac7..87e50b7697e02 100644
--- a/app/code/Magento/InventoryCache/etc/di.xml
+++ b/app/code/Magento/InventoryCache/etc/di.xml
@@ -15,7 +15,7 @@
     <type name="Magento\InventoryCache\Model\ResourceModel\GetProductIdsByStockIds">
         <arguments>
             <argument name="productSkuColumn" xsi:type="const">Magento\Catalog\Api\Data\ProductInterface::SKU</argument>
-            <argument name="productInterfaceClassName" xsi:type="const">Magento\Catalog\Api\Data\ProductInterface</argument>
+            <argument name="productInterfaceClassName" xsi:type="string">Magento\Catalog\Api\Data\ProductInterface</argument>
         </arguments>
     </type>
 </config>
diff --git a/app/code/Magento/InventoryIndexer/etc/di.xml b/app/code/Magento/InventoryIndexer/etc/di.xml
index 2a731cbe88086..46b93f86d868f 100644
--- a/app/code/Magento/InventoryIndexer/etc/di.xml
+++ b/app/code/Magento/InventoryIndexer/etc/di.xml
@@ -60,7 +60,7 @@
         <arguments>
             <argument name="tableNameSourceItem" xsi:type="const">Magento\Inventory\Model\ResourceModel\SourceItem::TABLE_NAME_SOURCE_ITEM</argument>
             <argument name="sourceItemIdFieldName" xsi:type="const">Magento\Inventory\Model\ResourceModel\SourceItem::ID_FIELD_NAME</argument>
-            <argument name="productInterfaceClassName" xsi:type="const">Magento\Catalog\Api\Data\ProductInterface</argument>
+            <argument name="productInterfaceClassName" xsi:type="string">Magento\Catalog\Api\Data\ProductInterface</argument>
         </arguments>
     </type>
 </config>

From ab39b56aa50241c4dfa5c321b01c9f1e66d5dace Mon Sep 17 00:00:00 2001
From: vitaliyboyko <vitaliyboyko@i.ua>
Date: Sat, 19 May 2018 12:51:11 +0300
Subject: [PATCH 5/5] Fixed static test checks issues

---
 .../InventoryCache/Model/FlushCacheByProductIds.php | 13 ++++++++++---
 .../Model/ResourceModel/GetProductIdsByStockIds.php |  8 ++++----
 app/code/Magento/InventoryCache/etc/di.xml          |  5 +++++
 .../ResourceModel/GetProductIdsBySourceItemIds.php  |  8 ++++----
 4 files changed, 23 insertions(+), 11 deletions(-)

diff --git a/app/code/Magento/InventoryCache/Model/FlushCacheByProductIds.php b/app/code/Magento/InventoryCache/Model/FlushCacheByProductIds.php
index 580b0853e95cf..7ce14dfdac7e2 100644
--- a/app/code/Magento/InventoryCache/Model/FlushCacheByProductIds.php
+++ b/app/code/Magento/InventoryCache/Model/FlushCacheByProductIds.php
@@ -7,7 +7,6 @@
 
 namespace Magento\InventoryCache\Model;
 
-use Magento\Catalog\Model\Product;
 use Magento\Framework\EntityManager\EventManager;
 use Magento\Framework\Indexer\CacheContext;
 
@@ -26,16 +25,24 @@ class FlushCacheByProductIds
      */
     private $eventManager;
 
+    /**
+     * @var string
+     */
+    private $productCacheTag;
+
     /**
      * @param CacheContext $cacheContext
      * @param EventManager $eventManager
+     * @param string $productCacheTag
      */
     public function __construct(
         CacheContext $cacheContext,
-        EventManager $eventManager
+        EventManager $eventManager,
+        string $productCacheTag
     ) {
         $this->cacheContext = $cacheContext;
         $this->eventManager = $eventManager;
+        $this->productCacheTag = $productCacheTag;
     }
 
     /**
@@ -47,7 +54,7 @@ public function __construct(
     public function execute(array $productIds)
     {
         if ($productIds) {
-            $this->cacheContext->registerEntities(Product::CACHE_TAG, $productIds);
+            $this->cacheContext->registerEntities($this->productCacheTag, $productIds);
             $this->eventManager->dispatch('clean_cache_by_tags', ['object' => $this->cacheContext]);
         }
     }
diff --git a/app/code/Magento/InventoryCache/Model/ResourceModel/GetProductIdsByStockIds.php b/app/code/Magento/InventoryCache/Model/ResourceModel/GetProductIdsByStockIds.php
index 90fc28e454ca9..b95baaa77607a 100644
--- a/app/code/Magento/InventoryCache/Model/ResourceModel/GetProductIdsByStockIds.php
+++ b/app/code/Magento/InventoryCache/Model/ResourceModel/GetProductIdsByStockIds.php
@@ -59,8 +59,8 @@ class GetProductIdsByStockIds
      * @param StockIndexTableNameResolverInterface $stockIndexTableNameResolver
      * @param DefaultStockProviderInterface $defaultStockProvider
      * @param IndexStructure $indexStructure
-     * @param $productSkuColumn
-     * @param $productInterfaceClassName
+     * @param string $productSkuColumn
+     * @param string $productInterfaceClassName
      */
     public function __construct(
         ResourceConnection $resource,
@@ -68,8 +68,8 @@ public function __construct(
         StockIndexTableNameResolverInterface $stockIndexTableNameResolver,
         DefaultStockProviderInterface $defaultStockProvider,
         IndexStructure $indexStructure,
-        $productSkuColumn,
-        $productInterfaceClassName
+        string $productSkuColumn,
+        string $productInterfaceClassName
     ) {
         $this->resource = $resource;
         $this->metadataPool = $metadataPool;
diff --git a/app/code/Magento/InventoryCache/etc/di.xml b/app/code/Magento/InventoryCache/etc/di.xml
index 87e50b7697e02..e13424af444f7 100644
--- a/app/code/Magento/InventoryCache/etc/di.xml
+++ b/app/code/Magento/InventoryCache/etc/di.xml
@@ -18,4 +18,9 @@
             <argument name="productInterfaceClassName" xsi:type="string">Magento\Catalog\Api\Data\ProductInterface</argument>
         </arguments>
     </type>
+    <type name="Magento\InventoryCache\Model\FlushCacheByProductIds">
+        <arguments>
+            <argument name="productCacheTag" xsi:type="const">Magento\Catalog\Model\Product::CACHE_TAG</argument>
+        </arguments>
+    </type>
 </config>
diff --git a/app/code/Magento/InventoryIndexer/Model/ResourceModel/GetProductIdsBySourceItemIds.php b/app/code/Magento/InventoryIndexer/Model/ResourceModel/GetProductIdsBySourceItemIds.php
index 70742195bd4b3..fc8cc717bce78 100644
--- a/app/code/Magento/InventoryIndexer/Model/ResourceModel/GetProductIdsBySourceItemIds.php
+++ b/app/code/Magento/InventoryIndexer/Model/ResourceModel/GetProductIdsBySourceItemIds.php
@@ -47,14 +47,14 @@ class GetProductIdsBySourceItemIds
      * @param MetadataPool $metadataPool
      * @param string $tableNameSourceItem
      * @param string $sourceItemIdFieldName
-     * @param $productInterfaceClassName
+     * @param string $productInterfaceClassName
      */
     public function __construct(
         ResourceConnection $resource,
         MetadataPool $metadataPool,
-        $tableNameSourceItem,
-        $sourceItemIdFieldName,
-        $productInterfaceClassName
+        string $tableNameSourceItem,
+        string $sourceItemIdFieldName,
+        string $productInterfaceClassName
     ) {
         $this->resource = $resource;
         $this->metadataPool = $metadataPool;