Re: [Springframework-developer] PropertyPathFactoryBean

[Dmitriy K. <dko...@ru...>]

FieldRetrievingFactoryBean looks great!

Dmitriy.




jürgen höller [werk3AT] wrote:

>Well, effectively we already *have* a built-in kind of expression language: BeanWrapper's property path evaluation capabilities, roughly following JSTL EL syntax. All that PropertyPathFactoryBean does is evaluate such BeanWrapper-style property paths on a given target bean.
> 
>I guess that's as convenient as you can get without the BeanFactory knowing about what's going on here (i.e. without the core factory knowing about expressions).
> 
>Regarding constants: Since 1.1 RC2, we have a FieldRetrievingFactoryBean which can be used to retrieve static fields:
>
>// standard definition for exposing a static field, specifying the "staticField" property
><bean id="myField" class="org.springframework.beans.factory.config.FieldRetrievingFactoryBean">
>   <property name="staticField"><value>java.sql.Connection.TRANSACTION_SERIALIZABLE</value></property>
></bean>
>
>// convenience version that specifies a static field pattern as bean name (since 1.1.2)
><bean id="java.sql.Connection.TRANSACTION_SERIALIZABLE" class="org.springframework.beans.factory.config.FieldRetrievingFactoryBean"/>
>
>If it's just about the odd constant in your XML bean definitions, this should be good enough. Of course, full-fledged scripting support *is* desirable for needs that go beyond that: for example, to specify entire bean definitions in scripts. I see those as two different goals, though.
>
>Juergen
>
>
>________________________________
>
>Von: spr...@li... im Auftrag von Rod Johnson
>Gesendet: Mo 04.10.2004 22:51
>An: spr...@li...
>Betreff: RE: [Springframework-developer] PropertyPathFactoryBean
>
>
>
>Have to say that this looks to me like it's making a case for an expression
>language instead of a FactoryBean.
>
>A similar requirement that would also be well addressed by OGNL/whatever:
>evaluating a constant. E.g. an AutowireCapableBeanFactory constant, which I
>recently had to configure via a property. It would be nice to be able to do
>that easily.
>
>Rgds
>Rod
>
>-----Original Message-----
>From: spr...@li...
>[mailto:spr...@li...] On Behalf Of
>Colin Sampaleanu
>Sent: 04 October 2004 18:32
>To: spr...@li...
>Subject: Re: [Springframework-developer] PropertyPathFactoryBean
>
>Good stuff. It overlaps of course with the mythical OGNL or expression
>support which keeps getting pushed back, but in the meantime provides some
>of the benefits for pretty little extra code...
>
>
>jürgen höller [werk3AT] wrote:
>
>  
>
>>I've just added a PropertyPathFactoryBean, following this suggestion:
>>
>>http://opensource.atlassian.com/projects/spring/browse/SPR-343
>>
>>
>>Usage examples:
>>
>>// target bean to be referenced by name <bean id="tb"
>>class="org.springframework.beans.TestBean" singleton="false">
>>  <property name="age"><value>10</value></property>
>>  <property name="spouse">
>>    <bean class="org.springframework.beans.TestBean">
>>      <property name="age"><value>11</value></property>
>>    </bean>
>>  </property>
>></bean>
>>
>>// will result in 12, which is the value of property 'age' of the
>>inner bean <bean id="propertyPath1"
>>    
>>
>class="org.springframework.beans.factory.config.PropertyPathFactoryBean">
>  
>
>>  <property name="targetObject">
>>    <bean class="org.springframework.beans.TestBean">
>>      <property name="age"><value>12</value></property>
>>    </bean>
>>  </property>
>>  <property name="propertyPath"><value>age</value></property>
>></bean>
>>
>>// will result in 11, which is the value of property 'spouse.age' of bean
>>    
>>
>'tb'
>  
>
>><bean id="propertyPath2"
>>    
>>
>class="org.springframework.beans.factory.config.PropertyPathFactoryBean">
>  
>
>>  <property name="targetBeanName"><value>tb</value></property>
>>  <property name="propertyPath"><value>spouse.age</value></property>
>></bean>
>>
>>// will result in 10, which is the value of property 'age' of bean 'tb'
>><bean id="tb.age"
>>class="org.springframework.beans.factory.config.PropertyPathFactoryBea
>>n"/>
>>
>>
>>The last one, interpreting the bean name as 'beanName.property' pattern, is
>>    
>>
>quite concise...
>  
>
>>    
>>
>
>
>
>
>-------------------------------------------------------
>This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use
>IT products in your business? Tell us what you think of them. Give us Your
>Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
>http://productguide.itmanagersjournal.com/guidepromo.tmpl
>_______________________________________________
>Springframework-developer mailing list
>Spr...@li...
>https://lists.sourceforge.net/lists/listinfo/springframework-developer
>
>
>
>
>
>-------------------------------------------------------
>This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
>Use IT products in your business? Tell us what you think of them. Give us
>Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
>http://productguide.itmanagersjournal.com/guidepromo.tmpl
>_______________________________________________
>Springframework-developer mailing list
>Spr...@li...
>https://lists.sourceforge.net/lists/listinfo/springframework-developer
>
>
>
>
>-------------------------------------------------------
>This SF.net email is sponsored by: IT Product Guide on ITManagersJournal
>Use IT products in your business? Tell us what you think of them. Give us
>Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more
>http://productguide.itmanagersjournal.com/guidepromo.tmpl
>_______________________________________________
>Springframework-developer mailing list
>Spr...@li...
>https://lists.sourceforge.net/lists/listinfo/springframework-developer
>  
>