Just like you can do below I would like to be able to do equivalent for request or session attribute in a webflow.

i.e something like:
<action-state id="criteria.view">
<export scope="request"
bean="productTypeActions"
method="loadAll"/>


Code:
You could use a MethodInvokingFactoryBean for this&#58; 

<bean class="org.springframework.web.context.support.ServletContextAttributeExporter"> 
  <property name="attributes"> 
    <map> 
      <entry key="myScAttr"> 
        <bean class="org.springframework.beans.factory.config.MethodInvokingFactoryBean"> 
          <property name="targetObject"><ref bean="objectDao/></property> 
          <property name="targetMethod"><value>getProperty</value></property> 
        </bean> 
      </entry> 
    </map> 
  </property> 
</bean>