[GitHub] avplatonov commented on a change in pull request #5881: IGNITE-10834: Add NamedVector into ML module.

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avplatonov commented on a change in pull request #5881: IGNITE-10834: Add NamedVector into ML module.
URL: https://github.com/apache/ignite/pull/5881#discussion_r250078353
 
 

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 File path: modules/ml/src/main/java/org/apache/ignite/ml/math/primitives/vector/impl/DelegatingNamedVector.java
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 @@ -0,0 +1,78 @@
+/*
+ * 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.ml.math.primitives.vector.impl;
+
+import java.util.Collections;
+import java.util.Map;
+import java.util.Objects;
+import java.util.Set;
+import org.apache.ignite.ml.math.primitives.vector.NamedVector;
+import org.apache.ignite.ml.math.primitives.vector.Vector;
+import org.omg.CORBA.NamedValue;
+
+/**
+ * Delegating named vector that delegates all operations to underlying vector and adds implementation of
+ * {@link NamedValue} functionality using embedded map that maps string index on real integer index.
+ */
+public class DelegatingNamedVector extends DelegatingVector implements NamedVector {
 
 Review comment:
   I don't like that vector operations hide real type of result - sum of NamedVectors will be Vector. Moreover, there is no checks of keys equality for different NamedVectors. Maybe we need generics?)) 

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