From 7b9fc4c995e264a50f728d4ee8eafa596f26fb7b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maximilian=20Kr=C3=B6g?= <maximilian.kroeg@geocept.com>
Date: Tue, 28 Jun 2022 16:37:03 +0200
Subject: [PATCH] Do not refresh use time for tiles when collecting used source
 tiles

---
 src/ol/source/VectorTile.js |  5 +++--
 src/ol/structs/LRUCache.js  | 12 ++++++++++++
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/ol/source/VectorTile.js b/src/ol/source/VectorTile.js
index 608eda5674..72f64ccdf1 100644
--- a/src/ol/source/VectorTile.js
+++ b/src/ol/source/VectorTile.js
@@ -240,8 +240,9 @@ class VectorTile extends UrlTile {
     const tileCache = this.getTileCacheForProjection(projection);
     const usedSourceTiles = Object.keys(usedTiles).reduce((acc, key) => {
       const cacheKey = getCacheKeyForTileKey(key);
-      if (tileCache.containsKey(cacheKey)) {
-        const sourceTiles = tileCache.get(cacheKey).sourceTiles;
+      const tile = tileCache.peek(cacheKey);
+      if (tile) {
+        const sourceTiles = tile.sourceTiles;
         for (let i = 0, ii = sourceTiles.length; i < ii; ++i) {
           acc[sourceTiles[i].getKey()] = true;
         }
diff --git a/src/ol/structs/LRUCache.js b/src/ol/structs/LRUCache.js
index f8c7e01385..2db45384ec 100644
--- a/src/ol/structs/LRUCache.js
+++ b/src/ol/structs/LRUCache.js
@@ -214,6 +214,18 @@ class LRUCache {
     return this.newest_.key_;
   }
 
+  /**
+   * Return an entry without updating least recently used time.
+   * @param {string} key Key.
+   * @return {T} Value.
+   */
+  peek(key) {
+    if (!this.containsKey(key)) {
+      return undefined;
+    }
+    return this.entries_[key].value_;
+  }
+
   /**
    * @return {T} value Value.
    */