Hello;
I have a stupid question. The customer wants to see a filtered list
of options in the WOToManyRelationship listing. I have added a
default fetch specification to the entity in the EO Model but for
some reason it is not applying in the WOToManyRelationship listing.
Am I missing something simple?
Don
On Dec 8, 2007, at 1:40 PM, Don Lindsay wrote:
Hello Chuck;
All I get is :
Application: dwtm
Error: java.lang.ClassCastException:
com.webobjects.eocontrol._EOCheapCopyMutableArray
Reason:
Stack trace:
File Line# Method Package
NA : Non applicable, JIT activated
No stack trace at all. I don't know why.
Don
On Dec 8, 2007, at 12:51 PM, Chuck Hill wrote:
On Dec 8, 2007, at 8:26 AM, Don Lindsay wrote:
Hello;
I recently picked up an old application from about a year ago.
When I click save on any of my edit pages I get a
classcastexception in WOComponentRequestHandler while handing
java.lang.ClassCastException:
com.webobjects.eocontrol._EOCheapCopyMutableArray.
The code that is executed is very basic when save is clicked:
try{
WXDebug.println(20,"AbstractPage.java:saveChanges(): getting
editing context");
ec = session().defaultEditingContext();
WXDebug.println(20,"AbstractPage.java:saveChanges(): Saving
changes to the editing context");
ec.saveChanges();
} catch( Exception e) {
WXDebug.println(10, "An Error Occurred in
AbstractPage.java:saveChanges() error:"+e.getMessage());
errorMessage = "An Error Occurred While Saving, changes may not
have saved!: " + e.getMessage();
e.printStackTrace();
Do we get to see the stack trace? This is a guessing game?
} finally {
WXDebug.println(25,"AbstractPage.java:saveChanges(): return page
to user");
WXDebug.println(25,"**AbstractPage.java:saveChanges(): Done");
return this;
}
Has anyone else seen this?
OK, I will guess. When you write _EOCheapMutableArray you
probably mean _EOCheapCopyMutableArray. Copying and pasting
exception messages and stack traces is soooo much more useful than
transcribing and misspelling them. Just a hint.
_EOCheapCopyMutableArray is used by EOF to implement to-many
relationships. If you are getting a class cast:
1. You have a bug in your code (if only we had the stack trace...)
2. There is a bug in that to many component you are using (stack
trace...)
3. You are violating the EOF Commandments and EOF is in a confused
state
http://wiki.objectstyle.org/confluence/display/WO/EOF-Using+EOF-The
+EOF+Commandments
Chuck
--
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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