1 files changed, 48 insertions, 0 deletions
diff --git a/gerrit-server/src/main/java/com/google/gerrit/server/cache/ConcurrentHashMapCache.java b/gerrit-server/src/main/java/com/google/gerrit/server/cache/ConcurrentHashMapCache.java
new file mode 100644
index 0000000000..bafdc49836
--- /dev/null
+++ b/gerrit-server/src/main/java/com/google/gerrit/server/cache/ConcurrentHashMapCache.java
@@ -0,0 +1,48 @@
+// Copyright (C) 2011 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.package com.google.gerrit.server.git;
+
+package com.google.gerrit.server.cache;
+
+import java.util.concurrent.ConcurrentHashMap;
+
+/**
+ * An infinitely sized cache backed by java.util.ConcurrentHashMap.
+ * <p>
+ * This cache type is only suitable for unit tests, as it has no upper limit on
+ * number of items held in the cache. No upper limit can result in memory leaks
+ * in production servers.
+ */
+public class ConcurrentHashMapCache<K, V> implements Cache<K, V> {
+  private final ConcurrentHashMap<K, V> map = new ConcurrentHashMap<K, V>();
+
+  @Override
+  public V get(K key) {
+    return map.get(key);
+  }
+
+  @Override
+  public void put(K key, V value) {
+    map.put(key, value);
+  }
+
+  @Override
+  public void remove(K key) {
+    map.remove(key);
+  }
+
+  @Override
+  public void removeAll() {
+    map.clear();
+  }
+}