如何在resources.groovy中创建一个带有抽象父bean的bean

Question

尝试在resources.groovy中创建一个bean，相当于XML:中的bean

<bean id="txProxyTemplate" abstract="true"
    class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">
    <property name="transactionManager" ref="transactionManager" />
    <property name="target" ref="genericHibernateDAO" />
    <property name="transactionAttributes">
        <props>
            <prop key="save*">PROPAGATION_REQUIRED</prop>
            <!--prop key="analyze">PROPAGATION_REQUIRED</prop -->
            <prop key="validate">PROPAGATION_REQUIRED</prop>
            <prop key="remove*">PROPAGATION_REQUIRED</prop>
            <prop key="create*">PROPAGATION_REQUIRED</prop>
            <prop key="delete*">PROPAGATION_REQUIRED</prop>
            <prop key="add*">PROPAGATION_REQUIRED</prop>
            <prop key="clear*">PROPAGATION_REQUIRED</prop>
            <prop key="set*">PROPAGATION_REQUIRED</prop>
            <prop key="reinitialize">PROPAGATION_REQUIRED</prop>
            <prop key="zap*">PROPAGATION_REQUIRED</prop>
            <prop key="turn*">PROPAGATION_REQUIRED</prop>
            <prop key="*">PROPAGATION_REQUIRED</prop>
        </props>
    </property>
</bean>

然后是第二个bean，它使用这个抽象bean作为其父bean：

<bean id="myCoolService" parent="txProxyTemplate">
    <property name="target">
        <bean
            class="com.fourgablesguy.myapp.MyCoolService">
        </bean>
    </property>
</bean>

到目前为止，这就是我在resources.groovy:中所拥有的

import org.springframework.transaction.interceptor.TransactionProxyFactoryBean
import com.fourgablesguy.myapp.MyCoolService
beans = {
    txProxyTemplate(TransactionProxyFactoryBean) {
        transactionManager = ref('transactionManager')
        target = ref ('genericHibernateDAO')
        transactionAttributes = [
            "save*":"PROPAGATION_REQUIRED",
            "validate":"PROPAGATION_REQUIRED",
            "remove*":"PROPAGATION_REQUIRED",
            "create*":"PROPAGATION_REQUIRED",
            "delete*":"PROPAGATION_REQUIRED",
            "add*":"PROPAGATION_REQUIRED",
            "clear*":"PROPAGATION_REQUIRED",
            "set*":"PROPAGATION_REQUIRED",
            "reinitialize":"PROPAGATION_REQUIRED",
            "zap*":"PROPAGATION_REQUIRED",
            "turn*":"PROPAGATION_REQUIRED",
            "*":"PROPAGATION_REQUIRED"
        ]
    }
    myCoolService(MyCoolService) {
    }
}

只是不知道如何将txProxyTemplate bean设置为抽象的，并将myCoolServicebean设置为将txProxeTemplate bean作为父级，将myCool Servicebean作为目标。

Answer 1

这在文档中有部分描述，请参阅http://grails.org/doc/latest/guide/spring.html

通常，您可以通过省略bean的类来使其抽象，但在这种情况下，由于您想要指定类，但只将其用作父bean，因此需要显式设置abstract属性。要使另一个bean将其用作其父bean，请设置parent属性：

import org.springframework.transaction.interceptor.TransactionProxyFactoryBean
import com.fourgablesguy.myapp.MyCoolService
beans = {
   txProxyTemplate(TransactionProxyFactoryBean) { bean ->
      bean.abstract = true
      transactionManager = ref('transactionManager')
      target = ref('genericHibernateDAO')
      transactionAttributes = [
         "save*":"PROPAGATION_REQUIRED",
         "validate":"PROPAGATION_REQUIRED",
         "remove*":"PROPAGATION_REQUIRED",
         "create*":"PROPAGATION_REQUIRED",
         "delete*":"PROPAGATION_REQUIRED",
         "add*":"PROPAGATION_REQUIRED",
         "clear*":"PROPAGATION_REQUIRED",
         "set*":"PROPAGATION_REQUIRED",
         "reinitialize":"PROPAGATION_REQUIRED",
         "zap*":"PROPAGATION_REQUIRED",
         "turn*":"PROPAGATION_REQUIRED",
         "*":"PROPAGATION_REQUIRED"
      ]
   }
   myCoolService(MyCoolService) { bean ->
      bean.parent = ref('txProxyTemplate')
   }
}

编辑：重新阅读你的bean defs后，看起来这是你真正需要的：

myCoolService { bean ->
   bean.parent = ref('txProxyTemplate')
   target = { MyCoolService s ->
      // props for the inner bean
   }
}