Re: [castor-dev] Error while unmarshalling a collection of Strings

[NABETH Thierry]

Title: Error while unmarshalling a collection of Strings

Hello Romilson,

 

Thank you for your suggestion.

 

But I had alrady done what you have described.

 

I was not enough detailed in my previous message (used the mapping table and try

different combinations, and even tried the first one).

And my methods were also public.

The marshalling is correct.

(something like

<filter>

    <contexts>BLABLABLABLA1</contexts>

    <contexts>BLABLABLABLA2</contexts>

  <contexts>BLABLABLABLA3</contexts>

</filter>)

 

 

>> If yet has errors, please write the error description and send other mail to list.

 

---------

org.xml.sax.SAXException: Illegal Text data found as child of: contexts
  value: "*"
 java.lang.Throwable(java.lang.String)
 java.lang.Exception(java.lang.String)
 org.xml.sax.SAXException(java.lang.String)
 void org.exolab.castor.xml.UnmarshalHandler.endElement(java.lang.String)
 void org.apache.xerces.parsers.SAXParser.endElement(org.apache.xerces.utils.QName)
 void org.apache.xerces.validators.common.XMLValidator.callEndElement(int)
 boolean org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(boolean)
 boolean org.apache.xerces.framework.XMLDocumentScanner.parseSome(boolean)
 void org.apache.xerces.framework.XMLParser.parse(org.xml.sax.InputSource)
 java.lang.Object org.exolab.castor.xml.Unmarshaller.unmarshal(org.xml.sax.InputSource)
 java.lang.Object org.exolab.castor.xml.Unmarshaller.unmarshal(java.io.Reader)
 java.lang.Object org.exolab.castor.xml.Unmarshaller.unmarshal(java.lang.Class, java.io.Reader)
 edu.insead.calt.inca.base.InCAObject edu.insead.calt.inca.base.InCAObject.xml_Xml2Object(java.lang.String, java.lang.String, java.lang.Class)
 edu.insead.calt.inca.base.InCAObject edu.insead.calt.inca.base.InCAObject.loadObjectFromXmlWithMapping(java.lang.String, java.lang.Class)
 edu.insead.calt.inca.base.InCAObject edu.insead.calt.inca.base.InCAObject.loadObject(java.lang.String, java.lang.String)
 edu.insead.calt.inca.ontology.behaviour.Behaviour edu.insead.calt.inca.ontology.behaviour.group.BehaviourGroup.loadBehaviour(java.lang.String)
 void edu.insead.calt.inca.InCAweb.initializeAll()
 void edu.insead.calt.inca.InCAServlet.init()
 void javax.servlet.GenericServlet.init(javax.servlet.ServletConfig)
 void org.apache.tomcat.core.ServletWrapper.doInit()
 void org.apache.tomcat.core.Handler.init()
 void org.apache.tomcat.core.ServletWrapper.init()
 void org.apache.tomcat.core.Handler.service(org.apache.tomcat.core.Request, org.apache.tomcat.core.Response)
 void org.apache.tomcat.core.ServletWrapper.service(org.apache.tomcat.core.Request, org.apache.tomcat.core.Response)
 void org.apache.tomcat.core.ContextManager.internalService(org.apache.tomcat.core.Request, org.apache.tomcat.core.Response)
 void org.apache.tomcat.core.ContextManager.service(org.apache.tomcat.core.Request, org.apache.tomcat.core.Response)
 void org.apache.tomcat.service.http.HttpConnectionHandler.processConnection(org.apache.tomcat.service.TcpConnection, java.lang.Object [])
 void org.apache.tomcat.service.TcpWorkerThread.runIt(java.lang.Object [])
 void org.apache.tomcat.util.ThreadPool$ControlRunnable.run()
 void java.lang.Thread.run()
---------

 

I have been tracing a little bit, and as I said in a previous message,

it stops at:

 void org.exolab.castor.xml.UnmarshalHandler.endElement(java.lang.String) {

...
  //-- check for character content
  if ((state.buffer != null) &&
                (state.buffer.length() > 0) &&
                (state.classDesc != null)) {
                  XMLFieldDescriptor cdesc = state.classDesc.getContentDescriptor();
        if (cdesc != null) { 
              ....
        } else {
                //-- check for non-whitespace...and report error
                if (!isWhitespace(state.buffer)) {
                        String err = "Illegal Text data found as child of: "
                                + name;
                        err += "\n  value: \"" + state.buffer + "\"";
                        throw new SAXException(err);
                                ==> exception generated!!!!
                                ==>  buffer = "*" name = "contexts"
                }
        }
...
}

What seems not to be correct is that:

cdesc = state.classDesc.getContentDescriptor() is null. !!!?

 

Note that state.classDesc appears to be an instance of

the class StringClassDescriptor.

And StringClassDescriptor.getContentDescriptor() return

the content of a static which value is null, and that do

not seem to be set to any value anywhere!!!

 

Thierry

 

Thierry Nabeth
Research Fellow,
INSEAD CALT (The Centre for Advanced Learning Technologies)
http://www.insead.edu/~nabeth/
http://www.insead.edu/CALT/
[EMAIL PROTECTED]
tel: +33 1 60 72 43 12
fax: +33 1 60 74 55 50

-----Original Message-----
From: Romilson Cruz de Carvalho [mailto:[EMAIL PROTECTED]]
Sent: Thursday, April 11, 2002 5:19 PM
To: [EMAIL PROTECTED]
Subject: Re: [castor-dev] Error while unmarshalling a collection of Strings

Well Thierry,

 

If you see in CastorXML Mapping Document, there are the table:

 

If there is a collection attribute, you can use the following table:

name	<type>	default implementation
array	<type_attribute>[]	<type_attribute>[]
vector	java.util.Vector	java.util.Vector
hashtable	java.util.Hashtable	java.util.Hashtable
collection	java.util.Collection	java.util.Arraylist
set	java.util.Set	java.util.Hashset
map	java.util.Map	java.util.Hashmap

 

 

Right, we case is the first line.

 

The Castor will mount the set/get methods assignature as :

 

public void <set-method>(<type> value);

 

 

----------------------- your mapping will stay as...
<class name="filter" >
                <field name="contexts" collection="array" type="java.lang.String" />
</class>

Castor will mount the set/get methods as follow:

 

public void setContexts( java.lang.String[] <value> )

public String[] getContexts()

 

I think the correct way your mapping file is like above.

 

 

Your class must be:

 

public class Filter { 
    //...some fields 
   

    String[] contexts;

 

    Filter () {...}

 

    public void setContexts(String[] aContext) {..//code..}

 

    public String[] getContexts() {...//code..}

 

    // no add ... methods

}

 

Your XML file must be like ..

 

<? xml.... ?>

<filter>

    <contexts>BLABLABLABLA1</contexts>

    <contexts>BLABLABLABLA2</contexts>

  <contexts>BLABLABLABLA3</contexts>

</filter>

 

 

Remember that if you not put the "public" .. yours methods will are private ..

and Castor will not find they.

 

If yet has errors, please write the error description and send other mail to list.

 

Romilson C. Carvalho

 

 

 

 

Well , i think the solution  as:

 

 

----------------------- XML doc

<? xml version="1.0" ?>

<filter>

    <context>Context One</context>

    <context>Context Two</context>

</filter>

 

----------------------- Bean associated

 

 

 

 

 

 

 

 

-----Mensagem original-----
De: NABETH Thierry [mailto:[EMAIL PROTECTED]]
Enviada em: quinta-feira, 11 de abril de 2002 10:57
Para: [EMAIL PROTECTED]
Assunto: Re: [castor-dev] Error while unmarshalling a collection of Strings

Hello,

 

>> can you write your mapping file ?

 

My mapping file was something like:

 

----------------------- mapping
<class name="filter" >
                <field name="contexts" collection="array" type="string" />
</class>
----------------------- marshall file

 

But I tried several combinations such as:

  <field name="contexts" collection="array" type="string" />

  <field name="contexts" />

  <field name="contexts" type="strings" />

etc.

with the same result.

 

public Class Filter {
    ...some fields
    String[] contexts;

    Filter () {...}

    setContexts(String[] aContext) {...}

    String[] getContexts() {...}

    // no add ... methods

}

 

I even tried to transform the array of string into a Vector containing strings()

(of course both in the source code and in the mapping file)

 

Note:

I have been using successfully Vector to marshall/unmarshall compex

objects.

My java development Environment is IBM Visual Age for Java.

 

 

Thierry

 

-----Original Message-----
From: Romilson Cruz de Carvalho [mailto:[EMAIL PROTECTED]]
Sent: Thursday, April 11, 2002 2:30 PM
To: [EMAIL PROTECTED]
Subject: Re: [castor-dev] Error while unmarshalling a collection of Strings

Hi ,

 

I has saw your question now .. can you write your mapping file ? and the JavaBean associated that contains the collection of strings ?

 

 

Thanks , and wait.

Romilson

-----Mensagem original-----
De: NABETH Thierry [mailto:[EMAIL PROTECTED]]
Enviada em: quinta-feira, 11 de abril de 2002 5:08
Para: [EMAIL PROTECTED]
Assunto: [castor-dev] Error while unmarshalling a collection of Strings

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