From ce044817c7ba0aea27c3fd8e496635d94d20a755 Mon Sep 17 00:00:00 2001
From: Paul Yang <TeBoring@users.noreply.github.com>
Date: Thu, 7 Jun 2018 18:16:44 -0700
Subject: Use legacy name in php runtime (#4741)

* Use legacy name in php runtime

Old generated code cannot work with new runtime, because the new runtime
assumes new class name for nested message. For details see #4738.

* Remove unused method
---
 php/src/Google/Protobuf/Internal/MapField.php | 25 ++++++++++++++++++++++++-
 1 file changed, 24 insertions(+), 1 deletion(-)

(limited to 'php/src/Google/Protobuf/Internal/MapField.php')

diff --git a/php/src/Google/Protobuf/Internal/MapField.php b/php/src/Google/Protobuf/Internal/MapField.php
index 38736dad..f7d7b710 100644
--- a/php/src/Google/Protobuf/Internal/MapField.php
+++ b/php/src/Google/Protobuf/Internal/MapField.php
@@ -58,7 +58,11 @@ class MapField implements \ArrayAccess, \IteratorAggregate, \Countable
     /**
      * @ignore
      */
-    private $value_klass;
+    private $klass;
+    /**
+     * @ignore
+     */
+    private $legacy_klass;
 
     /**
      * Constructs an instance of MapField.
@@ -75,6 +79,17 @@ class MapField implements \ArrayAccess, \IteratorAggregate, \Countable
         $this->key_type = $key_type;
         $this->value_type = $value_type;
         $this->klass = $klass;
+
+        if ($this->value_type == GPBType::MESSAGE) {
+            $pool = DescriptorPool::getGeneratedPool();
+            $desc = $pool->getDescriptorByClassName($klass);
+            if ($desc == NULL) {
+                new $klass;  // No msg class instance has been created before.
+                $desc = $pool->getDescriptorByClassName($klass);
+            }
+            $this->klass = $desc->getClass();
+            $this->legacy_klass = $desc->getLegacyClass();
+        }
     }
 
     /**
@@ -101,6 +116,14 @@ class MapField implements \ArrayAccess, \IteratorAggregate, \Countable
         return $this->klass;
     }
 
+    /**
+     * @ignore
+     */
+    public function getLegacyValueClass()
+    {
+        return $this->legacy_klass;
+    }
+
     /**
      * Return the element at the given key.
      *
-- 
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