xxl.mathematica.map.AssociationMap Maven / Gradle / Ivy

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package xxl.mathematica.map;

import io.vavr.Tuple;
import xxl.mathematica.Rule;

import java.util.List;
import java.util.Map;
import java.util.function.Function;

/**
 * 关联映射
 */
public class AssociationMap {
    /**
     * 根据键列表创建关联
     *
     * @param f
     * @param list
     * @param 
     * @param 
     * @return
     */
    public static  Map associationMap(Function f, List list) {
        return io.vavr.collection.List.ofAll(list)
                .toJavaMap(k -> Tuple.of(k, f.apply(k)));
    }

    /**
     * 根据旧的关联创建新的关联
     *
     * @param f
     * @param map
     * @param 
     * @param 
     * @param 
     * @param 
     * @return
     */
    public static  Map associationMap(Function, Rule> f, Map map) {
        return io.vavr.collection.HashMap.ofAll(map)
                .map((k1, v1) -> {
                    Rule res = f.apply(Rule.valueOf(k1, v1));
                    return Tuple.of(res.getKey(), res.getValue());
                })
                .toJavaMap();
    }
}