3.2.4.2. 使用托管 Bean
托管给 Spring 的 bean 可以通过注入或者通过 AppBeans
类获取。作为使用 bean 的示例,看看 OrderService
bean 的实现,它将具体的执行代理给了 OrderWorker
bean 来做:
package com.sample.sales.core;
import com.haulmont.cuba.core.Persistence;
import com.sample.sales.entity.Order;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import javax.inject.Inject;
@Service(OrderService.NAME)
public class OrderServiceBean implements OrderService {
@Inject
protected Persistence persistence;
@Inject
protected OrderWorker orderWorker;
@Transactional
@Override
public BigDecimal calculateTotals(Order order) {
Order entity = persistence.getEntityManager().merge(order);
orderWorker.calculateTotals(entity);
}
}