alessandrobenedetti commented on code in PR #4259:
URL: https://github.com/apache/solr/pull/4259#discussion_r3101187673


##########
solr/modules/language-models/src/java/org/apache/solr/languagemodels/documentenrichment/store/ChatModelStore.java:
##########
@@ -0,0 +1,66 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.solr.languagemodels.documentenrichment.store;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import org.apache.solr.languagemodels.documentenrichment.model.SolrChatModel;
+
+/** Simple store to manage CRUD operations on the {@link SolrChatModel} */
+public class ChatModelStore {
+
+  private final Map<String, SolrChatModel> availableModels;
+
+  public ChatModelStore() {
+    availableModels = Collections.synchronizedMap(new LinkedHashMap<>());
+  }
+
+  public SolrChatModel getModel(String name) {
+    return availableModels.get(name);
+  }
+
+  public void clear() {
+    availableModels.clear();
+  }
+
+  public List<SolrChatModel> getModels() {
+    synchronized (availableModels) {
+      final List<SolrChatModel> availableModelsValues = new 
ArrayList<>(availableModels.values());
+      return Collections.unmodifiableList(availableModelsValues);
+    }
+  }
+
+  @Override
+  public String toString() {
+    return "ChatModelStore [availableModels=" + availableModels.keySet() + "]";
+  }
+
+  public SolrChatModel delete(String modelName) {
+    return availableModels.remove(modelName);
+  }
+
+  public void addModel(SolrChatModel modeldata) throws ChatModelException {
+    final String name = modeldata.getName();
+    if (availableModels.putIfAbsent(modeldata.getName(), modeldata) != null) {
+      throw new ChatModelException(
+          "model '" + name + "' already exists. Please use a different name");
+    }
+  }
+}

Review Comment:
   see above in regards of duplicated code



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