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HefestoSql is an open-source Java library for creation of query with hibernate

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package io.github.robertomike.hefesto.utils;

import jakarta.persistence.criteria.From;
import jakarta.persistence.criteria.Path;

public class HibernateUtils {
    public static final String DOT_REGEX = "\\.";

    public static  Path getFieldFrom(From from, String field) {
        if (!field.contains(".")) {
            return from.get(field);
        }

        var split = field.split(DOT_REGEX);

        Path path = null;

        for (var o : split) {
            if (path == null) {
                path = from.get(o);
                continue;
            }
            path = path.get(o);
        }

        return path;
    }
}