import java.io.Serializable;
import java.util.List;

public interface CommonService {

    public <T extends Serializable> T save(T model);

    public <T extends Serializable> void saveOrUpdate(T model);
    
    public <T extends Serializable> void update(T model);
    
    public <T extends Serializable> void merge(T model);
    
    public <T extends Serializable> void delete(T model);

    public <T extends Serializable, PK extends Serializable> void delete(Class<T> entityClass, PK id);

    public <T extends Serializable, PK extends Serializable> T get(Class<T> entityClass, PK id);
    
    public <T extends Serializable> List<T> listAll(Class<T> entityClass);
}

import java.io.Serializable;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service("commonService")
@Transactional
public class CommonServiceImpl implements CommonService {

	@Autowired
    @Qualifier("commonDao")
    private CommonDao commonDao;
	
	@Override
	@Transactional(rollbackFor=MyException.class)
	public <T extends Serializable> T save(T model) {

		T t = this.commonDao.save(model);
		return t;
	}

	@Override
	public <T extends Serializable> void saveOrUpdate(T model) {

		this.commonDao.saveOrUpdate(model);
	}

	@Override
	public <T extends Serializable> void update(T model) {

		this.commonDao.update(model);
	}

	@Override
	public <T extends Serializable> void merge(T model) {

		this.commonDao.merge(model);
	}

	@Override
	public <T extends Serializable> void delete(T model) {

		this.commonDao.delete(model);
	}

	@Override
	public <T extends Serializable, PK extends Serializable> void delete(
			Class<T> entityClass, PK id) {

		this.commonDao.delete(entityClass, id);
	}

	@Override
	public <T extends Serializable, PK extends Serializable> T get(
			Class<T> entityClass, PK id) {
		
		return this.commonDao.get(entityClass, id);
	}

	@Override
	public <T extends Serializable> List<T> listAll(Class<T> entityClass) {

		return this.commonDao.listAll(entityClass);
	}

}