Thanks for letting us know.
Werner
Oisin Boydell wrote:
I discovered the problem, and it was actually not to do with the Castor
library itself but in the way the class loader was being used by the
Mapping object and the instance of Xalan that was used by Castor.
My class was running within a Web application running in JBoss, and I
figured out that a different version of Xalan was being used than the
one I thought and also JBoss uses different class loaders for different
applications running on the same server which caused problems until I
configured it properly. The results of this was very slow execution of
the marshal() method.
Anyhow all is working fine now. Many thanks.
Oisin.
On 15/11/2007, *Werner Guttmann* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Looking at the code (fragments) supplied, I cannot see anything that is
obviously wrong. In other words, we need to have a more detailed look at
this. Can I please ask you to crete a new JIra issue and attach a fully
fledged JUnit test case that highlights the issue. Please do not forget
to attach all relevant files, incl. mapping file, Java classes, etc.
Please have a look at
http://castor.org/how-to-submit-an-xml-bug.html
for guidelines on how to create such a test case.
Regards
Werner
Oisin Boydell wrote:
> Hi,
>
> I'm having a problem with the speed of marshalling objects to
XML, and
> it seems strange to me that when I supply a mapping file to the
> marshaller the marshal(Object) method actually takes longer to
execute
> than when I don't supply a mapping (so it marshals by introspection).
>
> Here is my code with the timing of the .marshal(Object) method:
>
> StringWriter sw = new StringWriter();
>
> Marshaller marshaller = new Marshaller(sw);
>
> marshaller.setMarshalAsDocument(false);
> marshaller.setSuppressXSIType (true);
> marshaller.setValidation(false);
> marshaller.setMapping(mapping);
>
> Date then = new Date();
> marshaller.marshal(this);
> long ms = new Date().getTime() - then.getTime();
>
> However if I replace " marshaller.marshal(this);" with
> "Marshaller.marshal(this, sw);" so it uses introspection instead
of the
> specified mapping then the method completes way quicker. In fact it
> takes up to a second to marshal the object and they are not very
large
> or complex objects so I suspect something is wrong. I would have
thought
> that introspection would be slower. I've tried all the techniques
such
> as caching a ClassDescriptorResolver but the slow execution is
actually
> when marshalling with the marshal(Object) method and not the
loading of
> the mapping file etc.
>
> Maybe there is something wrong with the mapping file I'm using?
Here is is:
>
> <?xml version=" 1.0"?>
> <!DOCTYPE mapping PUBLIC "-//EXOLAB/Castor Object Mapping DTD Version
> 1.0//EN" " http://castor.org/mapping.dtd";>
>
> <mapping>
> <description>Mapping of CwsResult and associated
classes</description>
>
> <class name=" util.result.SelectionData">
>
> <map-to xml="SELECTION_DATA" />
>
> <field name="query" set-method="setQuery"
get-method="getQuery"
> type="string" >
> <bind-xml name="QUERY" node="element" />
> </field>
>
> <field name="snippet" set-method="setSnippet"
> get-method="getSnippet" type="string">
> <bind-xml name="SNIPPET" node="element" />
> </field>
>
> <field name="timestamp" set-method="setTimestamp"
> get-method="getTimestamp" type="date" >
> <bind-xml name="TIMESTAMP" node="attribute" />
> </field>
>
> </class>
>
> <class name="util.result.RecommenderSelectionData ">
>
> <map-to xml="RECOMMENDER_SELECTION_DATA" />
>
> <field name="score" set-method="setScore"
get-method="getScore"
> type="double" >
> <bind-xml name="SCORE" node="element" />
> </field>
>
> <field name="selections" set-method="setSelections"
> get-method="getSelections" type=" util.result.SelectionData"
> collection="arraylist">
> <bind-xml name="SELECTIONS" node="element" />
> </field>
>
> <field name="userId" set-method="setUserId"
> get-method="getUserId" type="long" >
> <bind-xml name="USERID" node="attribute" />
> </field>
>
> </class>
>
> <class name=" util.result.CwsResult">
>
> <map-to xml="RESULT" />
>
> <field name="title" set-method="setTitle"
get-method="getTitle"
> type="string" >
> <bind-xml name="TITLE" node="element" />
> </field>
>
> <field name="displaySnippet"
set-method="setDisplaySnippet"
> get-method="getDisplaySnippet" type="string" >
> <bind-xml name="DISPLAY_SNIPPET" node="element" />
> </field>
>
> <field name="displayUrl" get-method="getDisplayUrl"
> type="string" >
> <bind-xml name="DISPLAY_URL" node="element" />
> </field>
>
> <field name="url" set-method="setUrl" get-method="getUrl"
> type=" java.net.URL" >
> <bind-xml name="URL" node="element" />
> </field>
>
> <field name="urlHash" set-method="setUrlHash"
> get-method="getUrlHash" type="string" >
> <bind-xml name="URLHASH" node="attribute" />
> </field>
>
> <field name="recommenderSelectionData"
> set-method="setRecommenderSelectionData"
> get-method="getRecommenderSelectionData" type="
> util.result.RecommenderSelectionData" collection="arraylist">
> <bind-xml name="RECOMMENDER_SELECTION_DATA"
node="element" />
> </field>
>
> </class>
> </mapping>
>
> I would appreciate any help or suggestions as I'm using the
marshalling
> for a Web application and the time delay for marshalling 10 or so
> objects when generating a Web page is unacceptable (up to 10
seconds).
> I've seen Castor being used in the same way for other Web
applications
> which do not seem to suffer from this speed problem and they are
using
> Castor in the same way as I am.
>
> Many thanks and looking forward to all replies,
> Oisin.
>
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