Re: Need Help on EOModel Auto update of DATE column for DirectToWebapp

ok, I will read it again.

Pierre
  ----- Original Message ----- 
  From: Chuck Hill 
  To: Pierre Gilquin 
  Cc: [email protected] 
  Sent: Monday, November 09, 2009 7:40 PM
  Subject: Re: Need Help on EOModel Auto update of DATE column for DirectToWebapp



  On Nov 9, 2009, at 3:00 AM, Pierre Gilquin wrote:

  > if the last  line is not forgotten, I did not have any problem  
  > modify an EO  :
  >
  > editingContext().processRecentChanges();


  You may  not have had, or noticed, any problem so far.  But this is  
  NOT safe.  This can modify EOs during saveChanges() and EOF is not  
  expecting that to happen.  Both Wonder and Practical WebObjects  
  provide an implementation of the correct, safe way to make such changes.


  Chuck


  >
  > Pierre
  > ----- Original Message -----
  > From: Paul Hoadley
  > To: [email protected]
  > Sent: Monday, November 09, 2009 11:05 AM
  > Subject: Re: Need Help on EOModel Auto update of DATE column for  
  > DirectToWebapp
  >
  > On 09/11/2009, at 7:22 PM, Pierre Gilquin wrote:
  >
  >> You can use trigger in the database
  >> or with EOF, you can implement validateForInsert() and  
  >> validateForUpdate()
  >> in the Java class of your entity
  >
  > You don't want to go modifying EO attributes in validateForInsert()  
  > or validateForUpdate():
  >
  > http://wiki.objectstyle.org/confluence/display/WO/EOF-Using+EOF-The+EOF+Commandments
  >
  > Depending on the OP's specific requirements, s/he might be able to  
  > use awakeFromInsertion() or awakeFromFetch(), or, better still,  
  > ERXEnterpriseObject's willInsert() or willUpdate().  See which of  
  > those fits the specific requirements.
  >
  >
  > -- 
  > Paul.
  >
  > w  http://logicsquad.net/
  > h  http://paul.hoadley.name/
  >
  >
  >
  >
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  -- 
  Chuck Hill             Senior Consultant / VP Development

  Practical WebObjects - for developers who want to increase their  
  overall knowledge of WebObjects or who are trying to solve specific  
  problems.
  http://www.global-village.net/products/practical_webobjects

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