Defining the DAO implementations

The following DAO implementations will inherit the core CRUD operations from GenericDaoImpl and add their own class-specific methods as defined in the implemented interface. Each method will use the @Transactional annotation to define the appropriate transactional behavior.

The CompanyDaoImpl class

The full listing for our CompanyDaoImpl class is as follows:

package com.gieman.tttracker.dao;

import com.gieman.tttracker.domain.Company;
import java.util.List;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

@Repository("companyDao")
@Transactional
public class CompanyDaoImpl extends GenericDaoImpl<Company, Integer> 
    implements CompanyDao {

    public CompanyDaoImpl() {
        super(Company.class);
    }

    @Override
    @Transactional(readOnly = true, propagation = Propagation.SUPPORTS)
    public List<Company...