tm4j-users

[TM4J-users] Re: [Tm4j-developers] TMAPI tm.getObjectById (id_association_role) -> StackOverflowError

[George T. <geo...@fr...>]

Thank you,
I will test it and I will reply to you about the results
Cheers


----- Original Message ----- 
From: "Lars Heuer" <he...@se...>
To: "George Tryfon" <geo...@fr...>
Cc: <tm4...@li...>
Sent: Wednesday, December 21, 2005 11:55 AM
Subject: Re: [Tm4j-developers] TMAPI tm.getObjectById 
(id_association_role) -> StackOverflowError


> Hi,
>
> [...]
>>> org.tmapi.core.TopicMap tm;
>>> AssociationRole ar = (AssociationRole)tm.getObjectById(idAssocRole);
>
>>> java.lang.StackOverflowError
>> [...]
>>> if the idAssocRole is not correct, the call gives null,
>>> but if the idAssocRole is correct, StackOverflowError
>
> I think I've found the failure.
> The method
>    Object wrap(Object obj, TMAPITopicMapImpl tm)
>
> forgets an argument (the player) if the "obj" is a Member instance and
> calls itself again and again. It should call
>    AssociationRole wrap(org.tm4j.topicmap.Member obj,
>                         org.tm4j.topicmap.Topic player,
>                         TMAPITopicMapImpl tm)
>
> Maybe the attached patch helps.
> Note, that the patch is only a hack (see the TODO annotation) and is
> not tested.
>
> Best regards,
> Lars
> -- 
> http://semagia.com 


____________________________________________________________________
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[TM4J-users] Re: [Tm4j-developers] TMAPI tm.getObjectById (id_association_role) -> StackOverflowError

[George T. <geo...@fr...>]

> Hi,
>
> [...]
>>> org.tmapi.core.TopicMap tm;
>>> AssociationRole ar = (AssociationRole)tm.getObjectById(idAssocRole);
>
>>> java.lang.StackOverflowError
>> [...]
>>> if the idAssocRole is not correct, the call gives null,
>>> but if the idAssocRole is correct, StackOverflowError
>
> I think I've found the failure.
> The method
>    Object wrap(Object obj, TMAPITopicMapImpl tm)
>
> forgets an argument (the player) if the "obj" is a Member instance and
> calls itself again and again. It should call
>    AssociationRole wrap(org.tm4j.topicmap.Member obj,
>                         org.tm4j.topicmap.Topic player,
>                         TMAPITopicMapImpl tm)
>
> Maybe the attached patch helps.
> Note, that the patch is only a hack (see the TODO annotation) and is
> not tested.
>
> Best regards,
> Lars
> -- 
> http://semagia.com


Hello, up to now I was using TM4J binary release,
in order to use your patch, I removed the jars
tm4j-0.9.8.jar
tm4jadmintool-0.9.8.jar
tm4jdbc-0.9.8.jar
tm4j-tmapi-0.9.8.jar
tm4j-tologx-0.9.8.jar
tm4ozone-0.9.8.jar

 and I included the sources into my project.

(I have a Hibernate database)

I suppose there is something I am not doing it in the right way and when the
TMAPITopicMapImpl.getHelperObject (Class interfaceClass)
calls
HelperObjectMap.getHelperObjectClassName(interfaceClass.getName());


here are my results...
    public static String getHelperObjectClassName(String interfaceName)
    {
System.out.println (interfaceName); //prints:
org.tmapi.index.core.TopicsIndex
        if (instance == null) instance = new HelperObjectMap();
        if (instance.m_cache.containsKey(interfaceName)) {
            return (String)instance.m_cache.get(interfaceName);
        }

        // Step 1: Look up mapping in system properties
        String implClassName = System.getProperty(interfaceName);
System.out.println ("implClassName");
System.out.println (implClassName!=null); //prints:  false <<<<<<<<<<<<<<<<

        // Step 2: Lookup the mapping in JRE_DIR/lib/tmapi.properties
        if (implClassName == null) {
            implClassName = instance.m_props.getProperty(interfaceName);
System.out.println (implClassName!=null); //prints:  false  <<<<<<<<<<<<<<<<
        }

        // Step 3: Look up the mapping in META-INF/services resource
directory
        if (implClassName == null) {
            URL u  = instance.getClass().getResource("/META-INF/services/" +
interfaceName);
System.out.println (u!=null); //prints:  false  <<<<<<<<<<<<<<<<
            if (u != null) {
System.out.println (u.toString());
                BufferedReader rdr = null;
                try {
                    rdr = new BufferedReader(new
InputStreamReader(u.openStream()));
                    implClassName = rdr.readLine();
                } catch (IOException e) {
                    m_log.error("Unable to read JAR services entry " +
interfaceName + ". ", e);
                } finally {
                    try {
                        if (rdr != null) rdr.close();
                    } catch (IOException ex) {
                        // Ignore failure to close the stream.
                    }
                }
            }
        }
System.out.println (implClassName!=null); //prints:  false <<<<<<<<<<<<<<<<
        if (implClassName != null) instance.m_cache.put(interfaceName,
implClassName);
        return implClassName; //returns null  <<<<<<<<<<<<<<<<
    }


I have also included the META-INF/services in my .jar file

what could be the problem?
Thank you in advance.
Cheers


____________________________________________________________________
http://www.freemail.gr - äùñåÜí õðçñåóßá çëåêôñïíéêïý ôá÷õäñïìåßïõ.
http://www.freemail.gr - free email service for the Greek-speaking.

[TM4J-users] Re: [Tm4j-developers] TMAPI tm.getObjectById (id_association_role) -> StackOverflowError

[Lars H. <he...@se...>]

Hi George,

[...]
> up to now I was using TM4J binary release,
> in order to use your patch, I removed the jars
[...]

>  and I included the sources into my project.
[...]

Did you use the build.xml of TM4J?

If I use it everything works fine.

Just do a
     ant all
or
     ant distrib-all

and you get the libs with the current date as suffix.

An alternative might be to modify or create your tmapi.properties file
(see
http://tmapi.org/guide/ar01s05s01.html#topicmapsystemfactory-lookup)

If you've further problems, please provide more information what
you've done to build TM4J from source.

Best regards,
Lars
-- 
http://semagia.com

Re: [TM4J-users] Re: [Tm4j-developers] TMAPI tm.getObjectById (id_association_role) -> StackOverflowError

[George T. <geo...@fr...>]

Hello Lars
I build using build.xml and it works OK.
Best regards,



> Hi George,
>
> [...]
>> up to now I was using TM4J binary release,
>> in order to use your patch, I removed the jars
> [...]
>
>>  and I included the sources into my project.
> [...]
>
> Did you use the build.xml of TM4J?
>
> If I use it everything works fine.
>
> Just do a
>     ant all
> or
>     ant distrib-all
>
> and you get the libs with the current date as suffix.
>
> An alternative might be to modify or create your tmapi.properties file
> (see
> http://tmapi.org/guide/ar01s05s01.html#topicmapsystemfactory-lookup)
>
> If you've further problems, please provide more information what
> you've done to build TM4J from source.
>
> Best regards,
> Lars
> -- 
> http://semagia.com
>
>
>
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____________________________________________________________________
http://www.freemail.gr - äùñåÜí õðçñåóßá çëåêôñïíéêïý ôá÷õäñïìåßïõ.
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