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[jpa-spec users] [jsr338-experts] Re: @Convert precedence

  • From: Steve Ebersole <steve.ebersole@...>
  • To: jsr338-experts@...
  • Cc: gordon yorke <gordon.yorke@...>
  • Subject: [jpa-spec users] [jsr338-experts] Re: @Convert precedence
  • Date: Thu, 22 Aug 2013 09:43:33 -0500
  • List-id: <jsr338-experts.jpa-spec.java.net>

Thanks for the reply Gordon. Where did you find that in the spec? I did a search on that quote and found no matches.

On Thu 22 Aug 2013 09:38:54 AM CDT, gordon yorke wrote:
Hello Steve,
    The specification says in reference to @Converts that "Multiple
converters must not be applied to the same basic attribute." but in
this case it makes sense to have the convert on the Embedded attribute
override the convert within the Embeddable.
--Gordon

On 22/08/2013 11:09 AM, Steve Ebersole wrote:
I could not find mention of this in the spec so wanted to start a
discussion within the group.  The concern is what to do when multiple
@Convert definitions can apply to a given attribute.  If the spec
does cover this, I apologize; if so, could someone point out the section?


2 examples:

1) non-path

@Entity
@Convert( attributeName="firstName", converter=FNameConverter.class )
class Person{
    ...
    @Convert( converter=FirstNameConverter.class )
    String firstName;
}


2) path

@Entity
@Convert( attributeName="homeAddress.city",
converter=HomeAddressCityConverter.class )
class Person {
    ...
    @Embedded
    Address homeAddress;
}

@Embeddable
class Address  {
    ...
    @Convert( converter=CityConverter.class )
    String city;
}


In (2) I think it is clearly better to apply
HomeAddressCityConverter.  But in (1) I think it is less clear cut;
there, personally, I'd think FirstNameConverter would be applied.
But not sure it makes sense to have different precedence rules.



[jpa-spec users] [jsr338-experts] @Convert precedence

Steve Ebersole 08/22/2013

[jpa-spec users] [jsr338-experts] Re: @Convert precedence

gordon yorke 08/22/2013

[jpa-spec users] [jsr338-experts] Re: @Convert precedence

Steve Ebersole 08/22/2013

[jpa-spec users] [jsr338-experts] Re: @Convert precedence

Steve Ebersole 08/22/2013

[jpa-spec users] [jsr338-experts] Re: @Convert precedence

gordon yorke 08/22/2013

[jpa-spec users] [jsr338-experts] Re: @Convert precedence

Kevin Sutter 08/22/2013

[jpa-spec users] [jsr338-experts] Re: @Convert precedence

Steve Ebersole 08/22/2013

[jpa-spec users] [jsr338-experts] Re: @Convert precedence

gordon yorke 08/22/2013

[jpa-spec users] [jsr338-experts] Re: @Convert precedence

Linda DeMichiel 08/22/2013

[jpa-spec users] [jsr338-experts] Re: @Convert precedence

Steve Ebersole 08/30/2013

[jpa-spec users] [jsr338-experts] Re: @Convert precedence

Kevin Sutter 08/30/2013
 
 
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