Make fetching hits slightly faster

bin/generate_db.php

@@ -31,8 +31,10 @@ $classes = $metadatas;
 // );
 
 // $tool->getCreateDatabaseSQL();
-$queries =  $tool->getCreateSchemaSQL($classes);
+// $queries =  $tool->getCreateSchemaSQL($classes);
-// $queries =  $tool->getUpdateSchemaSql($classes);
+$queries =  $tool->getUpdateSchemaSql($classes);
+var_dump($queries);
+die()
 foreach($queries as $sql){ echo "$sql;\n"; }
 // updateSchema
 $tool->updateSchema($classes);

src/Models/Hit.php

@@ -9,7 +9,15 @@ use Doctrine\Common\Collections\ArrayCollection;
 /**
  * Hit of a target and the facial parameters at the moment of the hit
  *
- * @ORM\Table(name="hits")
+ * @ORM\Table(name="hits", indexes={
+ *          @Index(name="imgAnger", columns={"hasImage", "anger"}),
+ *          @Index(name="imgContempt", columns={"hasImage", "contempt"}),
+ *          @Index(name="imgDisgust", columns={"hasImage", "disgust"}),
+ *          @Index(name="imgFear", columns={"hasImage", "fear"}),
+ *          @Index(name="imgJoy", columns={"hasImage", "joy"}),
+ *          @Index(name="imgSadness", columns={"hasImage", "sadness"}),
+ *          @Index(name="imgSurprise", columns={"hasImage", "surprise"}),
+ *          })
  * @ORM\Entity
  * @ORM\Entity(repositoryClass="EmotionHero\Models\HitRepository")
  */

src/Models/HitRepository.php

@@ -39,7 +39,8 @@ class HitRepository extends EntityRepository
         }
 
         $query = $this->_em->createQuery(
-            "SELECT h, ABS(:score - h.emotions.$emotionField) as HIDDEN distance, RAND() AS HIDDEN lala FROM ".Hit::class." h WHERE h.hasImage = :has ORDER BY distance ASC, lala"
+                // add BETWEEN so we can use _some_ keying to improve performance.
+            "SELECT h, ABS(:score - h.emotions.$emotionField) as HIDDEN distance, RAND() AS HIDDEN lala FROM ".Hit::class." h WHERE h.hasImage = :has AND h.emotions.$emotionField BETWEEN :score - 5 AND :score + 5 ORDER BY distance ASC, lala"
          )
          ->setParameters([
              'score' => $score,