From f62c06cac48b248f77c325c8fb6f82f92e1bb6b1 Mon Sep 17 00:00:00 2001
From: Jan-Willem Gmelig Meyling <jan-willem@youngmediaexperts.nl>
Date: Thu, 31 Dec 2020 17:18:44 +0100
Subject: [PATCH] [#2218] Store cached templates weakly

Fixes #2218
---
 .../main/java/com/querydsl/core/types/TemplateFactory.java    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/querydsl-core/src/main/java/com/querydsl/core/types/TemplateFactory.java b/querydsl-core/src/main/java/com/querydsl/core/types/TemplateFactory.java
index 3f661948f..4fec91ca4 100644
--- a/querydsl-core/src/main/java/com/querydsl/core/types/TemplateFactory.java
+++ b/querydsl-core/src/main/java/com/querydsl/core/types/TemplateFactory.java
@@ -23,7 +23,7 @@ import java.util.HashMap;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
-import java.util.concurrent.ConcurrentHashMap;
+import java.util.WeakHashMap;
 import java.util.function.Function;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -58,7 +58,7 @@ public class TemplateFactory {
             + "([slu%]?%?)"
             + "\\}");
 
-    private final Map<String,Template> cache = new ConcurrentHashMap<String,Template>();
+    private final Map<String, Template> cache = Collections.synchronizedMap(new WeakHashMap<>());;
 
     private final char escape;