Identifier Generator using Hibernate

IdGenerator.java

package com.example.generator;

import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.exception.ExceptionUtils;
import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.id.Configurable;
import org.hibernate.id.IdentifierGenerator;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.type.Type;

import java.io.Serializable;
import java.util.Properties;

@Slf4j
public class IdGenerator implements IdentifierGenerator, Configurable {

    private String columnName;
    private String tableName;

    @Override
    public void configure(Type type, Properties parameters, ServiceRegistry serviceRegistry) {
        columnName = parameters.getProperty("column-name");
        tableName = parameters.getProperty("table-name");
    }

    @Override
    public Serializable generate(SharedSessionContractImplementor session, Object object) {
        String query = String.format("select max(%s) from %s", columnName, tableName);
        log.info("Querying {} from the last maximum number", tableName);
        try {
            int maxId = 1;
            var lastId = session.createNativeQuery(query, Integer.class).getSingleResult();

            if (lastId != null) {
                maxId = lastId + 1;
            }

            log.info("Maximum number for column {} --> {}", columnName, maxId);
            return maxId;
        } catch (HibernateException he) {
            log.error("Error occurred while generating next ID for [{}, {}]:\n{}", columnName, tableName, ExceptionUtils.getFullStackTrace(he));
        }

        return null;
    }
}