Problem with list of derived types

[Richard J Cardone <ri...@us.ibm.com>]

Hi,

I'm having a problem using lists of derived types under Xmlbeans 2.4.0. 
Basically, I'm trying to define a list of base type and populate that list 
with instances of derived types.  For example, given a schema that 
contains complex types of Parent, Child1, and Child2, where Parent is 
abstract and extended by Child1 and Child2, I define a list of child 
elements using the Parent type as follows:

        <xs:complexType name="Children">
                        <xs:sequence>
                        <xs:element name="item" type="Parent" 
minOccurs="0" maxOccurs="unbounded" />
                        </xs:sequence>
        </xs:complexType>

I then create a Child1 instance, set its required content, validate it, 
and add it to an Xmlbeans-generated ListChildren instance without error. 
The ListChildren instance, however, fails validation because the required 
Child1 attributes and subelements are not found, even though I set them 
and the Child1 instance's validate method returned true.  Moreover, when I 
save the whole document, the output looks like this:

        <?xml version="1.0" encoding="UTF-8"?>
        <cfn:DOC xmlns:cfn="http://cfnxml" xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance">
                <items>
                                <item xsi:type="cfn:Child1"/>
                </items>
        </cfn:DOC>

I don't know why content from the Child1 instance is missing from the 
output.  To recap, my two questions are (1) Why does validation fail in 
the Children list even though the Child1 instance validation independently 
succeeds, and (2) Why does save() not output all assigned Child1 content 
as part of item element?

Any help is appreciated,
Rich

RE: Problem with list of derived types

[Radu Preotiuc-Pietro <ra...@oracle.com>]

Well, it seems like your two problems really are the same thing: you are not setting values on the correct "Child" element. If you can share your code, we may be able to spot the error, but I can assure you that it is possible to do what you want.
 
Radu
  
________________________________




	From: Richard J Cardone [mailto:richcar@us.ibm.com] 
	Sent: Thursday, October 23, 2008 4:10 PM
	To: user@xmlbeans.apache.org
	Subject: Problem with list of derived types 
	
	

	Hi, 
	
	I'm having a problem using lists of derived types under Xmlbeans 2.4.0.  Basically, I'm trying to define a list of base type and populate that list with instances of derived types.  For example, given a schema that contains complex types of Parent, Child1, and Child2, where Parent is abstract and extended by Child1 and Child2, I define a list of child elements using the Parent type as follows: 
	
	            <xs:complexType name="Children"> 
	                        <xs:sequence> 
	                            <xs:element name="item" type="Parent" minOccurs="0" maxOccurs="unbounded" /> 
	                        </xs:sequence> 
	            </xs:complexType> 
	
	I then create a Child1 instance, set its required content, validate it, and add it to an Xmlbeans-generated ListChildren instance without error.  The ListChildren instance, however, fails validation because the required Child1 attributes and subelements are not found, even though I set them and the Child1 instance's validate method returned true.  Moreover, when I save the whole document, the output looks like this: 
	
	        <?xml version="1.0" encoding="UTF-8"?> 
	        <cfn:DOC xmlns:cfn="http://cfnxml <http://cfnxml/> " xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance <http://www.w3.org/2001/XMLSchema-instance> "> 
	                    <items> 
	                                <item xsi:type="cfn:Child1"/> 
	                    </items> 
	        </cfn:DOC> 
	
	I don't know why content from the Child1 instance is missing from the output.  To recap, my two questions are (1) Why does validation fail in the Children list even though the Child1 instance validation independently succeeds, and (2) Why does save() not output all assigned Child1 content as part of item element? 
	
	Any help is appreciated, 
	Rich 

RE: Problem with list of derived types

[richcar <ri...@us.ibm.com>]

Radu,

Thanks for taking a look at the problem.  I'll test your solution as soon as
I get a chance.

Rich

-- 
View this message in context: http://www.nabble.com/Problem-with-list-of-derived-types-tp20151202p20564191.html
Sent from the Xml Beans - User mailing list archive at Nabble.com.


---------------------------------------------------------------------
To unsubscribe, e-mail: user-unsubscribe@xmlbeans.apache.org
For additional commands, e-mail: user-help@xmlbeans.apache.org