Remove several "loadArcanistProject()" methods

Summary:
Ref T3551. Releeph has old-style `loadX()` methods; get rid of one of them.

Differential has a couple of copies of this too, clean them up.

Test Plan:
  - Viewed various differential revisions (with and without projects).
  - Viewed and edited Releeph products.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T3551

Differential Revision: https://secure.phabricator.com/D8768

src/applications/differential/controller/DifferentialRevisionViewController.php

@@ -33,6 +33,7 @@ final class DifferentialRevisionViewController extends DifferentialController {
     $diffs = id(new DifferentialDiffQuery())
       ->setViewer($request->getUser())
       ->withRevisionIDs(array($this->revisionID))
+      ->needArcanistProjects(true)
       ->execute();
     $diffs = array_reverse($diffs, $preserve_keys = true);
 
@@ -61,8 +62,18 @@ final class DifferentialRevisionViewController extends DifferentialController {
       $diff_vs = null;
     }
 
-    $arc_project = $target->loadArcanistProject();
-    $repository = ($arc_project ? $arc_project->loadRepository() : null);
+    $repository = null;
+    $repository_phid = $target->getRepositoryPHID();
+    if ($repository_phid) {
+      if ($repository_phid == $revision->getRepositoryPHID()) {
+        $repository = $revision->getRepository();
+      } else {
+        $repository = id(new PhabricatorRepositoryQuery())
+          ->setViewer($user)
+          ->withPHIDs(array($repository_phid))
+          ->executeOne();
+      }
+    }
 
     list($changesets, $vs_map, $vs_changesets, $rendering_references) =
       $this->loadChangesetsAndVsMap(
@@ -219,6 +230,7 @@ final class DifferentialRevisionViewController extends DifferentialController {
       'whitespace',
       DifferentialChangesetParser::WHITESPACE_IGNORE_ALL);
 
+    $arc_project = $target->getArcanistProject();
     if ($arc_project) {
       list($symbol_indexes, $project_phids) = $this->buildSymbolIndexes(
         $arc_project,

src/applications/differential/storage/DifferentialDiff.php

@@ -95,27 +95,6 @@ final class DifferentialDiff
     return $name;
   }
 
-  public function loadArcanistProject() {
-    if (!$this->getArcanistProjectPHID()) {
-      return null;
-    }
-    return id(new PhabricatorRepositoryArcanistProject())->loadOneWhere(
-      'phid = %s',
-      $this->getArcanistProjectPHID());
-  }
-
-  public function getBackingVersionControlSystem() {
-    $arcanist_project = $this->loadArcanistProject();
-    if (!$arcanist_project) {
-      return null;
-    }
-    $repository = $arcanist_project->loadRepository();
-    if (!$repository) {
-      return null;
-    }
-    return $repository->getVersionControlSystem();
-  }
-
   public function save() {
     $this->openTransaction();
       $ret = parent::save();

src/applications/releeph/controller/project/ReleephProductEditController.php

@@ -15,6 +15,7 @@ final class ReleephProductEditController extends ReleephProductController {
     $product = id(new ReleephProjectQuery())
       ->setViewer($viewer)
       ->withIDs(array($this->productID))
+      ->needArcanistProjects(true)
       ->requireCapabilities(
         array(
           PhabricatorPolicyCapability::CAN_VIEW,
@@ -145,7 +146,7 @@ final class ReleephProductEditController extends ReleephProductController {
         id(new AphrontFormStaticControl())
           ->setLabel(pht('Arc Project'))
           ->setValue(
-            $product->loadArcanistProject()->getName()))
+            $product->getArcanistProject()->getName()))
       ->appendChild(
         id(new AphrontFormStaticControl())
           ->setLabel(pht('Releeph Project PHID'))

src/applications/releeph/controller/project/ReleephProductListController.php

@@ -53,7 +53,7 @@ final class ReleephProductListController extends ReleephController
           ),
           'r'.$repo->getCallsign()));
 
-      $arc = $product->loadArcanistProject();
+      $arc = $product->getArcanistProject();
       if ($arc) {
         $item->addAttribute($arc->getName());
       }

src/applications/releeph/query/ReleephProductSearchEngine.php

@@ -13,7 +13,8 @@ final class ReleephProductSearchEngine
 
   public function buildQueryFromSavedQuery(PhabricatorSavedQuery $saved) {
     $query = id(new ReleephProjectQuery())
-      ->setOrder(ReleephProjectQuery::ORDER_NAME);
+      ->setOrder(ReleephProjectQuery::ORDER_NAME)
+      ->needArcanistProjects(true);
 
     $active = $saved->getParameter('active');
     $value = idx($this->getActiveValues(), $active);

src/applications/releeph/query/ReleephProjectQuery.php

@@ -8,6 +8,7 @@ final class ReleephProjectQuery
   private $phids;
 
   private $needRepositories;
+  private $needArcanistProjects;
 
   private $order    = 'order-id';
   const ORDER_ID    = 'order-id';
@@ -33,6 +34,11 @@ final class ReleephProjectQuery
     return $this;
   }
 
+  public function needArcanistProjects($need) {
+    $this->needArcanistProjects = $need;
+    return $this;
+  }
+
   public function loadPage() {
     $table = new ReleephProject();
     $conn_r = $table->establishConnection('r');
@@ -71,6 +77,29 @@ final class ReleephProjectQuery
     return $projects;
   }
 
+  public function didFilterPage(array $products) {
+
+    if ($this->needArcanistProjects) {
+      $project_ids = array_filter(mpull($products, 'getArcanistProjectID'));
+      if ($project_ids) {
+        $projects = id(new PhabricatorRepositoryArcanistProject())
+          ->loadAllWhere('id IN (%Ld)', $project_ids);
+        $projects = mpull($projects, null, 'getID');
+      } else {
+        $projects = array();
+      }
+
+      foreach ($products as $product) {
+        $project_id = $product->getArcanistProjectID();
+        $project = idx($projects, $project_id);
+        $product->attachArcanistProject($project);
+      }
+    }
+
+    return $products;
+  }
+
+
   private function buildWhereClause(AphrontDatabaseConnection $conn_r) {
     $where = array();
 

src/applications/releeph/storage/ReleephProject.php

@@ -21,6 +21,7 @@ final class ReleephProject extends ReleephDAO
   protected $details = array();
 
   private $repository = self::ATTACHABLE;
+  private $arcanistProject = self::ATTACHABLE;
 
   public function getConfiguration() {
     return array(
@@ -53,11 +54,14 @@ final class ReleephProject extends ReleephDAO
     return $this;
   }
 
-  public function loadArcanistProject() {
-    return $this->loadOneRelative(
-      new PhabricatorRepositoryArcanistProject(),
-      'id',
-      'getArcanistProjectID');
+  public function getArcanistProject() {
+    return $this->assertAttached($this->arcanistProject);
+  }
+
+  public function attachArcanistProject(
+    PhabricatorRepositoryArcanistProject $arcanist_project = null) {
+    $this->arcanistProject = $arcanist_project;
+    return $this;
   }
 
   public function getPushers() {