Unable to write expectec XML file with StaxEventItemWriter

[benmasi]

Hi all,

I am trying to process the following XML to add and set some properties to items:

<lot xmlns:xsi=...>
   <id>...</id>
   <date>...</date>
   <desc>...</desc>
   <items>
      <item>...</item>
      <item>...</item>
             ....
      <item>...</item>
   </items>

</lot>

. I use StexEventItemReader abd Jaxb2 unmarshaller for unmarshalling : all works fine.
. I modify my Jaxb2 objects as expected
. At marshalling step is my problem:
I use StaxEventItemWriter and Jaxb2 marshaller, but i am not able to well reconstitute
the XML file. What i obtain is something like:

<lot>
<lot>
   <id>...</id>
   <date>...</date>
   <desc>...</desc>
   <items>
      <item>...</item>
      <item>...</item>
             ....
      <item>...</item>
   </items>

</lot>
</lot>

as we can see: the root tag element is put twice for opening and closing the xml document.


My configuration is like this:

<beans:bean id="myWriter" class="com.MyWriter">
    <beans:property name="delegate" ref="xmlWriter" />
 </beans:bean>

 <beans:bean id="xmlWriter" class="org.springframework.batch.item.xml.StaxEventItemWriter">
  <beans:property name="rootTagName" value="lot" />
  <beans:property name="marshaller" ref="marshaller" />
  <beans:property name="overwriteOutput" value="true" />
  <beans:property name="resource" ref="fichierOUT" />
  </beans:bean>

<beans:bean id="marshaller"
      class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
      <beans:property name="classesToBeBound">
            <beans:list>           
                 <beans:value>Lot</beans:value> 
                 <beans:value>Items</beans:value>
                 <beans:value>Item</beans:value>
            </beans:list>
        </beans:property>
        <beans:property name="schema" value="file:./myXSD.xsd"/>
</beans:bean>

In the class MyWriter, in the 'write' method, the delegate writer (StaxEventItemWriter) writes the object transmitted in parameter (here a 'Lot' object):

delegate.write(lot)

I tried to make the delegate write only the 'items' block, but in this case i lose the other information of the lot (see the following xml):

<lot>
   <items>
      <item>...</item>
      <item>...</item>
             ....
      <item>...</item>
   </items>
</lot>

What is wrong in my configuration? how is it possible to obtain the XML expected? If you have a sample of code doing that, it would be great!
Thanks in advance ofr your help on this!

[symanco]

The most likely cause is that you annotated your Lot class with @XmlRootElement(name="lot") and at the same time, as I can see, your rootTagName is set to "lot".
That's why you see lot twice in the xml output file.