FW: [grails-user] What's the proper way to invoke super.beforeInsert() for a Domain class?

[Matthew.Lachman]

I asked this question on the Grails user list but perhaps it's more of a
Groovy question.  How to I invoke a super class's closure that has the
same name as "this" class's closure?

-----Original Message-----
From: Lachman, Matt (West)
Sent: Friday, November 06, 2009 3:01 PM
To: user@...
Subject: [grails-user] What's the proper way to invoke
super.beforeInsert() for a Domain class?

I have domain classes similar to the following:

class A {
        //Some properties

        def beforeInsert = {
                //Do something interesting
        }
}

class B extends A {
        //Some added properties

        def beforeInsert = {
                super.beforeInsert() //doesn't actually call
A.beforeInsert()
                //Do additional interesting things
        }
}

What's the proper way to achieve the effect I'm looking for?

Thanks,
Matt

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[Roshan Dawrani-2]

You can do it like:

=================================
class A {
    def beforeInsert = {
        println "A->beforeInsert()"
    }
}

class B extends A {
    def getSuperClosure() {
        super.getBeforeInsert()
    }
    def beforeInsert = {
        getSuperClosure()()
        println "B->beforeInsert()"
    }
}

new B().beforeInsert()
=================================

Hope it helps.

-- Roshan

On Sat, Nov 7, 2009 at 2:40 AM, <Matthew.Lachman@...> wrote:

I asked this question on the Grails user list but perhaps it's more of a
Groovy question.  How to I invoke a super class's closure that has the
same name as "this" class's closure?

-----Original Message-----
From: Lachman, Matt (West)
Sent: Friday, November 06, 2009 3:01 PM
To: user@...
Subject: [grails-user] What's the proper way to invoke
super.beforeInsert() for a Domain class?

I have domain classes similar to the following:

class A {
       //Some properties

       def beforeInsert = {
               //Do something interesting
       }
}

class B extends A {
       //Some added properties

       def beforeInsert = {
               super.beforeInsert() //doesn't actually call
A.beforeInsert()
               //Do additional interesting things
       }
}

What's the proper way to achieve the effect I'm looking for?

Thanks,
Matt

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[Matthew.Lachman]

Some parts of this message have been removed. Learn more about Nabble's security policy.

Good idea – I’ll give that a shot.  On the Grails list, I also got the following suggestion from Burt Beckwith:

 

Have beforeInsert delegate to a real method:

 

class A {

   //Some properties

 

   protected void onBeforeInsert() {

      //Do something interesting

   }

 

   def beforeInsert = {

      onBeforeInsert()

   }

}

 

class B extends A {

   //Some added properties

 

   @Override

   protected void onBeforeInsert() {

      super.onBeforeInsert()

      //Do additional interesting things

   }

}

 

Both seem obvious now that I see them.  Thanks!

 

Matt

 

 

From: roshandawrani@... [mailto:roshandawrani@...] On Behalf Of Roshan Dawrani
Sent: Sunday, November 08, 2009 7:54 AM
To: user@...
Subject: Re: [groovy-user] FW: [grails-user] What's the proper way to invoke super.beforeInsert() for a Domain class?

 

You can do it like:

=================================
class A {
    def beforeInsert = {
        println "A->beforeInsert()"
    }
}

class B extends A {
    def getSuperClosure() {
        super.getBeforeInsert()
    }
    def beforeInsert = {
        getSuperClosure()()
        println "B->beforeInsert()"
    }
}

new B().beforeInsert()
=================================

Hope it helps.

-- Roshan

On Sat, Nov 7, 2009 at 2:40 AM, <Matthew.Lachman@...> wrote:

I asked this question on the Grails user list but perhaps it's more of a
Groovy question.  How to I invoke a super class's closure that has the
same name as "this" class's closure?

-----Original Message-----
From: Lachman, Matt (West)
Sent: Friday, November 06, 2009 3:01 PM
To: user@...
Subject: [grails-user] What's the proper way to invoke
super.beforeInsert() for a Domain class?

I have domain classes similar to the following:

class A {
       //Some properties

       def beforeInsert = {
               //Do something interesting
       }
}

class B extends A {
       //Some added properties

       def beforeInsert = {
               super.beforeInsert() //doesn't actually call
A.beforeInsert()
               //Do additional interesting things
       }
}

What's the proper way to achieve the effect I'm looking for?

Thanks,
Matt

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