/*
 * 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.selection.scoring.metric;

import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;

/**
 * Common interface to present metric values for different ML tasks.
 */
public interface MetricValues {
    /** Returns the pair of metric name and metric value. */
    public default Map<String, Double> toMap() {
        Map<String, Double> metricValues = new HashMap<>();
        for (Field field : getClass().getDeclaredFields())
            try {
                metricValues.put(field.getName(), field.getDouble(this));
            } catch (IllegalAccessException e) {
                e.printStackTrace();
            }
        return metricValues;
    }
}
