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From "Ragy Eleish (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCR-217) class org.apache.jackrabbit.name.QName has a hardcoded dependency on Xerces
Date Fri, 16 Sep 2005 05:14:54 GMT
    [ http://issues.apache.org/jira/browse/JCR-217?page=comments#action_12329510 ] 

Ragy Eleish commented on JCR-217:
---------------------------------

I did more research the dependency on xerces is in more files than just QNAME they are as
follows:

contrib\jcr-ext\src\java\org\apache\jackrabbit\session\SessionNamespaceRegistry.java
contrib\jcr-ext\src\java\org\apache\jackrabbit\xml\DocumentViewExportVisitor.java
org\apache\jackrabbit\core\LocalNamespaceMappings.java
org\apache\jackrabbit\core\NamespaceRegistryImpl.java
org\apache\jackrabbit\core\SessionImpl.java(1009): XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
org\apache\jackrabbit\core\WorkspaceImpl.java(687): XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
org\apache\jackrabbit\core\query\lucene\LuceneQueryBuilder.java
org\apache\jackrabbit\core\util\ISO9075.java
org\apache\jackrabbit\name\Path.java
org\apache\jackrabbit\name\QName.java

Most of the dependency is on isValidNCName, with the following exceptions
- SessionImpl and WorkspaceImpl they specify the xerces parser directly.
- ISO9075 and DocumentViewExportVisitor depend on some other methods in the Xerces' XMLChar
class.


> class org.apache.jackrabbit.name.QName has a hardcoded dependency on Xerces
> ---------------------------------------------------------------------------
>
>          Key: JCR-217
>          URL: http://issues.apache.org/jira/browse/JCR-217
>      Project: Jackrabbit
>         Type: Bug
>     Versions: 1.0
>     Reporter: Ragy Eleish
>     Priority: Critical

>
> The class org.apache.jackrabbit.name.QName, has an unneeded dependency on Xerces which
make it difficult to work with the XML parser or ones choice.
> The dependency (on line 246) is on the method "XMLChar.isValidNCName" only. I suggest
one of the following solutions
> - Copy the implementation of this method to the QName class, it is a very simple implementation.
> - Use the mehtod provided in JAXP 1.3 javax.xml.XMLUtils.isValidNCName, which will create
dependency on JAXP 1.3 though. JDK 1.5 ships with JAXP 1.3
> This dependency is causing us alot of trouble since we need to use another parser that
is optimized for large XML data. 

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