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Re: Does WebObjects use Java 1.5?
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Re: Does WebObjects use Java 1.5?


  • Subject: Re: Does WebObjects use Java 1.5?
  • From: Francis Labrie <email@hidden>
  • Date: Fri, 23 Mar 2007 09:18:38 -0400

Hi,


David Avendasora wrote:
I have been using this for-loop structure in an app I'm currently developing and it seems to work very well, and I haven't even needed the .toArray() call at the end. Now, I'm not a WO expert so I can't promise you that it will work in your specific circumstances.

This is an example of how I use it and cast the generic objects:

for (Object aRoutingObject : this.routings()) {
Routing aRouting = (Routing)aRoutingObject;
/* Stuff I want to do with each member (aRouting) of the routings () to-many relationship
...
...
*/
}


If "routings()" method is a to-many relationship, you just have been lucky or you are using a com.webobjects.eocontrol._EOCheapCopyArray class patch (like the one in EOExtensions). With a plain vanilla WebObjects, this loop will only work if the relationship array fault have been fired. If it's still a fault, your loop will do nothing.

To test that, just fetch an fresh EO having a mandatory to-many relationship, and loop through the to-many relationship using Java 5 enhanced for loop or the Iterator interface. If your array fault has not been fired, your loop will not iterate through the target EOs...


-- Francis Labrie Saint-Bruno-de-Montarville, Québec, Canada

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References: 
 >Does WebObjects use Java 1.5? (From: Christian Telepski <email@hidden>)
 >Re: Does WebObjects use Java 1.5? (From: Ian Joyner <email@hidden>)
 >Re: Does WebObjects use Java 1.5? (From: Francis Labrie <email@hidden>)
 >Re: Does WebObjects use Java 1.5? (From: David Avendasora <email@hidden>)

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