D2W removing qualifier field crash

Subject: D2W removing qualifier field crash
From: Ian Joyner <email@hidden>
Date: Wed, 1 Mar 2006 11:30:57 +1100

I have a model with PERSON <- MEMBER. Member is a subclass of person, qualified by a single character 'type' attribute. I generate a Direct to Web project and by default, the 'type' attribute is shown on the query screen for member. This is meaningless, so I use WebAssistant to hide it, but having done so, I get the following crash. Does anyone have an insight as to why this is? (I've already submitted a bug report to Apple.) WebAssistant has added the following rule twice (when type is removed for some strange reason) to user.d2wmodel, and this seems to be the problem:

{

"class" = "com.webobjects.directtoweb.Rule";

"author" = "100";

"rhs" = {

"class" = "com.webobjects.directtoweb.Assignment";

"keyPath" = "keyWhenRelationship";

};

"lhs" = {

"class" = "com.webobjects.eocontrol.EOAndQualifier";

"qualifiers" = (

{

"class" = "com.webobjects.eocontrol.EOKeyValueQualifier";

"value" = "query";

"selectorName" = "isEqualTo";

"key" = "task";

{

"class" = "com.webobjects.eocontrol.EOKeyValueQualifier";

"value" = "Member";

"selectorName" = "isEqualTo";

"key" = "entity.name";

{

"class" = "com.webobjects.eocontrol.EOKeyValueQualifier";

"value" = "uniform_sizes";

"selectorName" = "isEqualTo";

"key" = "propertyKey";

}

);

};

Error:

java.lang.NullPointerException

Reason:

Stack trace:

File	Line#	Method	Package

Class.java	1830	searchFields	java.lang
Class.java	1214	getDeclaredField	java.lang
D2WUtils.java	267	dataTypeForCustomKeyAndEntity	com.webobjects.directtoweb
D2WContext.java	589	customAttribute	com.webobjects.directtoweb
D2WContext.java	577	attributeForProperty	com.webobjects.directtoweb
D2WContext.java	562	attribute	com.webobjects.directtoweb
D2WContext.java	532	attribute	com.webobjects.directtoweb
DefaultAssignment.java	163	defaultDisplayNameForProperty	com.webobjects.directtoweb
GeneratedMethodAccessor50.java	NA	invoke	sun.reflect
DelegatingMethodAccessorImpl.java	25	invoke	sun.reflect
Method.java	324	invoke	java.lang.reflect
NSKeyValueCoding.java	684	methodValue	com.webobjects.foundation
NSKeyValueCoding.java	1160	valueInObject	com.webobjects.foundation
NSKeyValueCoding.java	1268	valueForKey	com.webobjects.foundation
KeyValuePath.java	136	valueForKeyOnObject	com.webobjects.directtoweb
DefaultAssignment.java	50	fire	com.webobjects.directtoweb
Rule.java	346	fire	com.webobjects.directtoweb
D2WModel.java	1480	_fireRule	com.webobjects.directtoweb
D2WModel.java	1525	fireRuleForKeyPathInContext	com.webobjects.directtoweb
D2WFastModel.java	184	fireRuleForKeyPathInContext	com.webobjects.directtoweb
D2WContext.java	278	inferValueForKey	com.webobjects.directtoweb
D2WContext.java	166	valueForKey	com.webobjects.directtoweb
D2WComponent.java	375	displayNameForProperty	com.webobjects.directtoweb
D2WComponent.java	563	displayNameForKeyWhenRelationship	com.webobjects.directtoweb

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