Re: [JDO] Problem with byte-code enhancement

[Alexandre BOISSEAU]

Hi Nicolas,

I use the enhancer provided by jdori (com.sun.jdori.enhancer) and 
db-ojb-1.0.rc6.
I don't know, because I have a similar class without problem during 
enhancement and running.

Here my class file :
public final class CFile {
   private long id;  // primary-key, autoincrement
   private String fileName;
   private String contentFile;
   protected CFile() {
   }
   protected CFile(final String fileName, final String contentType, 
final InputStream fileStream) {
       this();
       try {
           contentFile = IOUtils.toString(fileStream);
       } catch (IOException ex) {
           ex.printStackTrace();
       }
       this.fileName = fileName;
       this.contentType = contentType;
   }

   public long getId() {
       return id;
   }
  
   protected String getContentType() {
       return contentType;
   }

   public String getFileName() {
       return fileName;
   }
   public InputStream getContentFile() {
       return (InputStream) new 
ByteArrayInputStream(contentFile.getBytes());
   }
  
   public String toString() {
       return "File : id=" + id + " ; fileName=" + fileName + " ; 
contentType=" + contentType;
   }
}

Nicolas Arni-Bloch wrote:

Hi Alexandre,
could you send the java class ?
wish version of the jdo enhancer do you use ?
Le 26 avr. 04, � 09:00, Alexandre BOISSEAU a �crit :

Hi,

I have a class file with an 'long id' autoincrementally. During 
byte-code enhancement, I get the following error :
    [java] Error while enhancing: JDO ENHANCER: At least one error 
occurred while enhancing input class for Transparent Persistence; 
detailed message(s): nested exception: 
com.sun.jdori.model.ModelFatalException: 
ReflectionJavaField.ensureInitializedField: cannot find reflection 
field instance for field id.
    [java] com.sun.jdori.enhancer.EnhancerUserException: JDO 
ENHANCER: At least one error occurred while enhancing input class for 
Transparent Persistence; detailed message(s): nested exception: 
com.sun.jdori.model.ModelFatalException: 
ReflectionJavaField.ensureInitializedField: cannot find reflection 
field instance for field id.
    [java] at 
com.sun.jdori.enhancer.filter.Enhancer.enhanceClassFile(Unknown Source)
    [java] at com.sun.jdori.enhancer.Main.enhanceClassFile(Unknown 
Source)
    [java] at com.sun.jdori.enhancer.Main.enhanceInputFiles(Unknown 
Source)
    [java] at com.sun.jdori.enhancer.Main.process(Unknown Source)
    [java] at com.sun.jdori.enhancer.Main.main(Unknown Source)

Contents of XML Metadate file :
<jdo>
   <package name="org.esupportail.portal.channels.CPracticeChannel">
            <class name="CFile">
           <extension vendor-name="ojb" key="table" value="file" />
                                 <field name="id">
               <extension vendor-name="ojb" key="column" value="id" />
               <extension vendor-name="ojb" key="jdbc-type" 
value="BIGINT" />                                      </field>
           ...
       </class>

Please help me ?
And if you need other details ...
Regards, Alexandre.

--
Alexandre BOISSEAU
University of Rennes1 - France
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Nicolas Arni-Bloch                                      
Groupe MATIS, Centre Universitaire d'Informatique
24 rue General-Dufour
CH-1204 Gen�ve
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phone : +41 22 379 76 80
fax : +41 22 379 77 80

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Alexandre BOISSEAU
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