Re: [Tm4j-developers] Deep Copy - ClassCastException

[Peri <per...@gm...>]

hi,

Topic:
Copy of contents xtm  files to my-sql DBMS.
The process goes smooth till it finds scope object in either <basename(s)>
or <occurrence(s)>


If observed, in the method copyScopedObject  of
TopicMapFactoryBase.TopicMapFactoryBase, the Topic object is sent as is to
the implementation classes, which works fine if the copy is performed at the
same level (file-system to file-system).

Have tried fixing this problem and did a bit of testing too, to copy the
topics from various XTM, provided in the example section.

If there is a process I would have to follow in order to test the validity
of my logic, please let me know.

Thank you.




On 4/12/07, Peri <per...@gm...> wrote:
>
> Hi,
> I am trying to perform a copy from a TopicMap generated from in memory
> provider  and populate my topicmap stored in the database.
> While copying the scope bounded basenames, the copy operations errors out
> with a class cast exception...
>
>
> TopicMap:
> topicmaps/kings_and_queens.xtm # Sample provided in the examples
>
> Code Snippet:
> TopicMapProvider provider_m = tmpf_m.newTopicMapProvider(providerProps);
> Locator baseLocator_m =
> provider_m.getLocatorFactory().createLocator("URI", getInputURI());
>
> TopicMapSource src_m = new SerializedTopicMapSource(getInputStream(),
> baseLocator_m);
>
> // Parse the topic map
> TopicMap tm_m = provider_m.addTopicMap(src_m);
>
> TopicMapProvider provider_h = tmpf_h.newTopicMapProvider(providerProps);
> Locator baseLocator_h =
> provider_h.getLocatorFactory().createLocator("URI", getInputURI());
>
> TopicMap tm_h = provider_h.getTopicMap(baseLocator_h);
> provider_h.removeTopicMap(tm_h);
> tm_h = provider_h.createTopicMap(baseLocator_h);
>
> // Perform a copy
> tm_h.getFactory().copy(tm_m);
>
>
> Stack trace:
> Exception in thread "main" org.tm4j.topicmap.TopicMapRuntimeException:
> Cause: java.lang.ClassCastException: org.tm4j.topicmap.memory.TopicImplcannot be cast to
> org.tm4j.topicmap.hibernate.TopicImpl
> Cause:org.tm4j.topicmap.memory.TopicImpl cannot be cast to
> org.tm4j.topicmap.hibernate.TopicImpl
>     at org.tm4j.topicmap.hibernate.ScopedObjectImpl.setScope(Unknown
> Source)
>     at org.tm4j.topicmap.TopicMapFactoryBase.copyScopedObject(
> TopicMapFactoryBase.java:741)
>     at org.tm4j.topicmap.TopicMapFactoryBase.copy(TopicMapFactoryBase.java
> :507)
>     at org.tm4j.topicmap.TopicMapFactoryBase.copy (
> TopicMapFactoryBase.java:259)
>     at org.tm4j.topicmap.TopicMapFactoryBase.copy(TopicMapFactoryBase.java
> :212)
>     at org.tm4j.topicmap.TopicMapFactoryBase.copy(TopicMapFactoryBase.java
> :203)
>     at org.tm4j.topicmap.TopicMapFactoryBase.copy (
> TopicMapFactoryBase.java:96)
>     at com.krl.examples.HibernateProviderTest.setUp(
> HibernateProviderTest.java:97)
>     at com.krl.examples.HibernateProviderTest.main(
> HibernateProviderTest.java:108)
> Caused by: java.lang.ClassCastException :
> org.tm4j.topicmap.memory.TopicImpl cannot be cast to
> org.tm4j.topicmap.hibernate.TopicImpl
>     at org.tm4j.topicmap.hibernate.ScopedObjectImpl.setScope(Unknown
> Source)
>     ... 9 more
>
> Am I missing anything here...
>
>
> Any help would me much appreciated!!!
> --
> warm regards
> Peri
>
> The best way out of difficulty is through it. :)




-- 
warm regards
Peri

The best way out of difficulty is through it. :)