Modernize FeedQuery a little bit

Summary: Ref T12762. Updates some conventions and methods. This has no (meaningful) behavioral changes.

Test Plan:
  - Grepped for `setFilterPHIDs()`.
  - Viewed main feed, user feed, project feed.
  - Called `feed.query`.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T12762

Differential Revision: https://secure.phabricator.com/D18027

src/applications/feed/conduit/FeedQueryConduitAPIMethod.php

@@ -67,16 +67,16 @@ final class FeedQueryConduitAPIMethod extends FeedConduitAPIMethod {
     if (!$limit) {
       $limit = $this->getDefaultLimit();
     }
-    $filter_phids = $request->getValue('filterPHIDs');
-    if (!$filter_phids) {
-      $filter_phids = array();
-    }
 
     $query = id(new PhabricatorFeedQuery())
       ->setLimit($limit)
-      ->setFilterPHIDs($filter_phids)
       ->setViewer($user);
 
+    $filter_phids = $request->getValue('filterPHIDs');
+    if ($filter_phids) {
+      $query->withFilterPHIDs($filter_phids);
+    }
+
     $after = $request->getValue('after');
     if (strlen($after)) {
       $query->setAfterID($after);

src/applications/feed/query/PhabricatorFeedQuery.php

@@ -6,7 +6,7 @@ final class PhabricatorFeedQuery
   private $filterPHIDs;
   private $chronologicalKeys;
 
-  public function setFilterPHIDs(array $phids) {
+  public function withFilterPHIDs(array $phids) {
     $this->filterPHIDs = $phids;
     return $this;
   }
@@ -16,50 +16,46 @@ final class PhabricatorFeedQuery
     return $this;
   }
 
+  public function newResultObject() {
+    return new PhabricatorFeedStoryData();
+  }
+
   protected function loadPage() {
-    $story_table = new PhabricatorFeedStoryData();
-    $conn = $story_table->establishConnection('r');
-
-    $data = queryfx_all(
-      $conn,
-      'SELECT story.* FROM %T story %Q %Q %Q %Q %Q',
-      $story_table->getTableName(),
-      $this->buildJoinClause($conn),
-      $this->buildWhereClause($conn),
-      $this->buildGroupClause($conn),
-      $this->buildOrderClause($conn),
-      $this->buildLimitClause($conn));
-
-    return $data;
+    // NOTE: We return raw rows from this method, which is a little unusual.
+    return $this->loadStandardPageRows($this->newResultObject());
   }
 
   protected function willFilterPage(array $data) {
     return PhabricatorFeedStory::loadAllFromRows($data, $this->getViewer());
   }
 
-  protected function buildJoinClause(AphrontDatabaseConnection $conn_r) {
+  protected function buildJoinClauseParts(AphrontDatabaseConnection $conn) {
+    $joins = parent::buildJoinClauseParts($conn);
+
     // NOTE: We perform this join unconditionally (even if we have no filter
     // PHIDs) to omit rows which have no story references. These story data
     // rows are notifications or realtime alerts.
 
     $ref_table = new PhabricatorFeedStoryReference();
-    return qsprintf(
-      $conn_r,
+    $joins[] = qsprintf(
+      $conn,
       'JOIN %T ref ON ref.chronologicalKey = story.chronologicalKey',
       $ref_table->getTableName());
+
+    return $joins;
   }
 
-  protected function buildWhereClause(AphrontDatabaseConnection $conn_r) {
-    $where = array();
+  protected function buildWhereClauseParts(AphrontDatabaseConnection $conn) {
+    $where = parent::buildWhereClauseParts($conn);
 
-    if ($this->filterPHIDs) {
+    if ($this->filterPHIDs !== null) {
       $where[] = qsprintf(
-        $conn_r,
+        $conn,
         'ref.objectPHID IN (%Ls)',
         $this->filterPHIDs);
     }
 
-    if ($this->chronologicalKeys) {
+    if ($this->chronologicalKeys !== null) {
       // NOTE: We want to use integers in the query so we can take advantage
       // of keys, but can't use %d on 32-bit systems. Make sure all the keys
       // are integers and then format them raw.
@@ -73,21 +69,19 @@ final class PhabricatorFeedQuery
       }
 
       $where[] = qsprintf(
-        $conn_r,
+        $conn,
         'ref.chronologicalKey IN (%Q)',
         implode(', ', $keys));
     }
 
-    $where[] = $this->buildPagingClause($conn_r);
-
-    return $this->formatWhereClause($where);
+    return $where;
   }
 
-  protected function buildGroupClause(AphrontDatabaseConnection $conn_r) {
-    if ($this->filterPHIDs) {
-      return qsprintf($conn_r, 'GROUP BY ref.chronologicalKey');
+  protected function buildGroupClause(AphrontDatabaseConnection $conn) {
+    if ($this->filterPHIDs !== null) {
+      return qsprintf($conn, 'GROUP BY ref.chronologicalKey');
     } else {
-      return qsprintf($conn_r, 'GROUP BY story.chronologicalKey');
+      return qsprintf($conn, 'GROUP BY story.chronologicalKey');
     }
   }
 
@@ -120,6 +114,10 @@ final class PhabricatorFeedQuery
     return $item['chronologicalKey'];
   }
 
+  protected function getPrimaryTableAlias() {
+    return 'story';
+  }
+
   public function getQueryApplicationClass() {
     return 'PhabricatorFeedApplication';
   }

src/applications/feed/query/PhabricatorFeedSearchEngine.php

@@ -56,7 +56,7 @@ final class PhabricatorFeedSearchEngine
 
     $phids = array_mergev($phids);
     if ($phids) {
-      $query->setFilterPHIDs($phids);
+      $query->withFilterPHIDs($phids);
     }
 
     return $query;

src/applications/people/controller/PhabricatorPeopleProfileViewController.php

@@ -229,7 +229,7 @@ final class PhabricatorPeopleProfileViewController
     $viewer) {
 
     $query = new PhabricatorFeedQuery();
-    $query->setFilterPHIDs(
+    $query->withFilterPHIDs(
       array(
         $user->getPHID(),
       ));

src/applications/project/controller/PhabricatorProjectProfileController.php

@@ -73,7 +73,7 @@ final class PhabricatorProjectProfileController
 
     $stories = id(new PhabricatorFeedQuery())
       ->setViewer($viewer)
-      ->setFilterPHIDs(
+      ->withFilterPHIDs(
         array(
           $project->getPHID(),
         ))