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List:       xmlbeans-dev
Subject:    [jira] Commented: (XMLBEANS-263) Would like to have methods to
From:       "Ed (JIRA)" <xmlbeans-dev () xml ! apache ! org>
Date:       2008-07-10 3:39:33
Message-ID: 290045047.1215661173087.JavaMail.jira () brutus
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    [ https://issues.apache.org/jira/browse/XMLBEANS-263?page=com.atlassian.jira.plugi \
n.system.issuetabpanels:comment-tabpanel&focusedCommentId=12612364#action_12612364 ] 

Ed commented on XMLBEANS-263:
-----------------------------

I think wrapper types make sense for optional attribute/element

for example, if I have an xsd:

<xsd:element name="ElementA">
<xsd:attribute name="AttA" type="xsd:unsignedLong"/>
<xsd:attribute name="AttB" type="xsd:unsignedLong" use="required"/>
</xsd:element>

and data:

<ElementA attB="10"/>

elementA.getAttA() should return java.lang.Long because it is nullable. A 0 primitive \
returned by this class doesn't seem consistent as it is not equivalent to null and \
not the same as <ElementA attA="0" attB="10"/>.

Only way to avoid this seems be to use the xget...() methods or for this case \
elementA.xgetAttA() for all optional primitive attributes.

> Would like to have methods to get/set fundamental types as Java wrapper objects \
>                 e.g. java.lang.Long
> ---------------------------------------------------------------------------------------------------
>  
> Key: XMLBEANS-263
> URL: https://issues.apache.org/jira/browse/XMLBEANS-263
> Project: XMLBeans
> Issue Type: New Feature
> Components: Binding
> Affects Versions: Version 2.1
> Environment: All
> Reporter: Lawrence Jones
> 
> For getters/setters which take/return fundamental types (e.g. long) user would like \
> to generate the Wrapper types (e.g. java.lang.Long). See mail below.
> > -----Original Message-----
> > From: Ramona Krickan [mailto:ramona.krickan@zooplus.de]
> > Sent: Friday, April 07, 2006 2:01 AM
> > To: dev@xmlbeans.apache.org
> > Subject: AW: Wrapper classes instead of primitive types in the Generated
> > classes
> > 
> > Hello Lawrence,
> > 
> > thank you very much for your help. It helped me understand the basic
> > concept
> > - why you are using XmlLong and the other classes.
> > But what I didn't really understand is why you don't use java.lang.Long
> > for
> > convenience, but the primitive type long.
> > 
> > My Problem is the following:
> > I am working with ibatis (ORM-Tool). For this tool I write xml-mapping
> > files, so called sql-maps, where I specify a class with its properties.
> > So when I query my Database, ibatis looks at this mapping file and then
> > searches for the specified class. When it found the class it creates an
> > instance and fills in the propertys with the help of the getter and setter
> > methods.
> > The problem is that the ORM-Tools work with the Wrapper classes because
> > there a null is possible. If for example a database identifier has null as
> > its value, the ORM-Tool knows that it still has to save this Object to the
> > database, if the value is not null, but for example 0, then the ORM-Tool
> > thinks that the Object is already persistent.
> > Because there are so many classes we just need once, we want to have them
> > generated from XmlBeans.
> > Because of this Problem, neither the primitive type nor the Xml... classes
> > work for us.
> > 
> > To solve this problem for us, I have changed the source code a bit, but
> > that
> > isn't a really code solution because with each new release from XmlBeans,
> > we
> > have to adjust the code again.
> > A nice solution for this specific problem we found with JAXB. There you
> > can
> > specify user definded type within annotations. Is there a plan to
> > implement
> > this feature in XmlBeans? Or is there anything that speaks against it? If
> > there is nothing that speaks against it, I would like to implement the
> > JAXB
> > Standard of specifying user defined types in XmlBeans, but for doing that
> > I
> > need help.
> > 
> > I hope I could clearly state my problem and you can help me.
> > 
> > Greetings,
> > Ramona

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