Add new class >_<

1 files changed, 22 insertions, 0 deletions

diff --git a/container-search/src/main/java/com/yahoo/search/query/profile/CompoundNameChildCache.java b/container-search/src/main/java/com/yahoo/search/query/profile/CompoundNameChildCache.java
new file mode 100644
index 00000000000..bc23db3871e
--- /dev/null
+++ b/container-search/src/main/java/com/yahoo/search/query/profile/CompoundNameChildCache.java
@@ -0,0 +1,22 @@
+// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.search.query.profile;
+
+import com.yahoo.processing.request.CompoundName;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Cache for compound names created through {@link CompoundName#append(String)}.
+ *
+ * @author jonmv
+ */
+public final class CompoundNameChildCache {
+
+    private final Map<CompoundName, Map<String, CompoundName>> cache = new HashMap<>();
+
+    public CompoundName append(CompoundName prefix, String suffix) {
+        return cache.computeIfAbsent(prefix, __ -> new HashMap<>()).computeIfAbsent(suffix, prefix::append);
+    }
+
+}