oleg-vlsk commented on code in PR #11425:
URL: https://github.com/apache/ignite/pull/11425#discussion_r1751887251


##########
modules/core/src/main/java/org/apache/ignite/internal/processors/query/running/SqlPlanKey.java:
##########
@@ -0,0 +1,95 @@
+/*
+ * 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.ignite.internal.processors.query.running;
+
+import org.apache.ignite.internal.util.typedef.F;
+
+/** SQL plan history entry key. */
+public class SqlPlanKey {
+    /** Plan. */
+    private final String plan;
+
+    /** Query. */
+    private final String qry;
+
+    /** Schema name. */
+    private final String schema;
+
+    /** Local query flag. */
+    private final boolean loc;
+
+    /** Pre-calculated hash code. */
+    private final int hash;
+
+    /**
+     * @param plan SQL Plan.
+     * @param qry Query.
+     * @param schema Schema name.
+     * @param loc Local query flag.
+     */
+    public SqlPlanKey(String plan, String qry, String schema, boolean loc) {
+        assert plan != null;
+        assert qry != null;
+        assert schema != null;
+
+        this.plan = plan;
+        this.qry = qry;
+        this.schema = schema;
+        this.loc = loc;
+
+        hash = 31 * (31 * plan.hashCode() + qry.hashCode() + 
schema.hashCode()) + (loc ? 1 : 0);

Review Comment:
   The `Objects.hash()` method has been implemented.



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