Hello frieds and thank you for your input. I solved my problem by writing
a type based on xsd:string that will either accept "" or yyyy-mm-dd as a
value and setting the value to "" if there is a null value for the
particular field before marshalling. Following is my simple type:
<xsd:simpleType name="localDateType">
<xsd:restriction base="xsd:string">
<xsd:pattern value="([0-9][0-9][0-9][0-9](-)[0-9][0-9]
(-)[0-9][0-9])?"/>
</xsd:restriction>
</xsd:simpleType>
Resultant XML when using this type shows up like this:
<otherContent>
<pastBalaneDueDate/>
</otherContent>
I truly appreciate your responses.
brian
Pete Hendry
<peter.hendry_at_cap To: users_at_jaxb.dev.java.net
eclear.com> cc:
Subject: Re: Strange output for nillable elements at marshall time
08/29/2003 08:03
AM
Please respond to
users
The output you propose is invalid. Your output defines a value of "".
This is not a valid date value and is not equivalent of java null
(schema nil). You have 2 choices:
1) define nillable="true" in which case you will get xsi:nil="true" in
the instance
2) define minOccurs="0" in which case the element is omitted
You cannot have what you wish unless you define your type as a
derivative of xsd:string where the empty string is a valid value and
then in your code you can covert the empty string to null and vice versa
(but this gives the obvious problem of how to actually pass an empty
string?).
Pete
Robert Lowe wrote:
>What is the schema declared datatype for the pastBalanceDueDate element?
I'm
>no schema expert, but if it's declared as "date" or similar, then I think
>your desired output is not valid against the schema.
>
>It would help if you would post at least the relevant part of the schema.
>
>- Rob
>
>
>-----Original Message-----
>From: Brian.Scott_at_mainline.com [mailto:Brian.Scott_at_mainline.com]
>Sent: Friday, August 29, 2003 2:37 AM
>To: users_at_jaxb.dev.java.net
>Subject: Strange output for nillable elements at marshall time
>
>
>Hello friends. I'm wondering if anyone can help me come up with a
solution
>to marshall a JAXB object that has null values for some fields that has
>cleaner output than what I see currently. For example, if I do not have
>past balance due date assigned, I might expect the output from the
>marshalling operation to look like this:
>
><otherContent>
><pastBalaneDueDate/>
></otherContent>
>
>Instead, I get the following:
>
><otherContent>
><pastBalanceDueDate ns1:nil="true"
>xmlns:ns1="http://www.w3.org/2001/XMLSchema-instance"/>
></otherContent>
>
>If I use minOccurs="0" in my .xsd instead of nillable=true, it will simply
>omit the <pastBalanceDueDate/> tag altogether. This is a bit cleaner, I
>suppose, but doesn't really get me to the solution I think should be
>available with a little more work. I can post the full .xsd if anyone
>thinks it will help.
>
>Thanks!
>
>brian
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