From c64c0c05c7435e4f968c9e8fc923f49b15ee873b Mon Sep 17 00:00:00 2001
From: Robbie Averill <robbie@silverstripe.com>
Date: Wed, 28 Feb 2018 09:30:17 +1300
Subject: [PATCH] Update doc block for withCommon to indicate an array of
 strings, shorten serialized cache key

---
 src/Search/Variants/SearchVariant.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Search/Variants/SearchVariant.php b/src/Search/Variants/SearchVariant.php
index 7214a3d..ea70abf 100644
--- a/src/Search/Variants/SearchVariant.php
+++ b/src/Search/Variants/SearchVariant.php
@@ -170,13 +170,13 @@ abstract class SearchVariant
      * Similar to {@link SearchVariant::with}, except will only use variants that apply to at least one of the classes
      * in the input array, where {@link SearchVariant::with} will run the query on the specific class you give it.
      *
-     * @param array $classes
+     * @param string[] $classes
      * @return SearchVariant_Caller
      */
     public static function withCommon(array $classes = [])
     {
         // Allow caching
-        $cacheKey = serialize($classes);
+        $cacheKey = sha1(serialize($classes));
         if (isset(self::$call_instances[$cacheKey])) {
             return self::$call_instances[$cacheKey];
         }