I am trying to avoid using http://hibernate.sourceforge.net/hibern ... ng-2.0.dtd to fetch the DTD and use a local copy. According to Hibernate documentation, I could use the DTD that is in hibernate2.jar.

When I change the DOCTYPE in my mapping file to point to that file, I get the FileNotFoundException. Hibernate docs also claims that the DTD is searched for in the CLASSPATH.

Has anyone gotton this to work? Could it be because I am using the addXML method of the configuration?

Thanks,
-ramin


Hibernate version: 2.0

Mapping documents:

<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 2.0//EN"
"net/sf/hibernate/hibernate-mapping-2.0.dtd" >

Full stack trace of any exception that occurs:

java.io.FileNotFoundException: /blah/dev/bin/net/sf/hibernate/hibernate-mapping-2.0.dtd (A file or directory in the path name does not exist.)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:120)
at java.io.FileInputStream.<init>(FileInputStream.java:82)
at sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:99)
at sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection.java:164)
at java.net.URL.openStream(URL.java(Inlined Compiled Code))
at org.apache.xerces.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)(Compiled Code)
at org.apache.xerces.impl.XMLEntityManager.startEntity(Unknown Source)(Inlined Compiled Code)
at org.apache.xerces.impl.XMLEntityManager.startDTDEntity(Unknown Source)(Inlined Compiled Code)
at org.apache.xerces.impl.XMLDTDScannerImpl.setInputSource(Unknown Source)(Compiled Code)
at org.apache.xerces.impl.XMLDocumentScannerImpl$DTDDispatcher.dispatch(Unknown Source)(Compiled Code)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at org.dom4j.io.SAXReader.read(SAXReader.java:339)
at org.dom4j.io.SAXReader.read(SAXReader.java:271)
at net.sf.hibernate.cfg.Configuration.addXML(Configuration.java:207)

Hibernate has a class called DTDEntityResolver, this class implements an EntityResolver, then Hibernate can validate its xml files offline or online, this EntityResolver is a parser´s property, with this tool you can force your application to validate your XML files offline, hibernate makes that, thus, you don´t need to change the doctype, if you change the doctype, hibernate doesn´t work. if you have any class reading the hibernate´s XML files, you should implement an EntityResolver to solve this problem, i did that, and it works fine.

It turns out that hibernate doesn't really lookup the DTD by connecting to sourceforge.net.


I just saw this in the source code for DTDEntityResolver:

private static final String URL = "http://hibernate.sourceforge.net/";

public InputSource resolveEntity (String publicId, String systemId) {
if ( systemId!=null && systemId.startsWith(URL) ) {
log.debug("trying to locate " + systemId + " in classpath under net/sf/hibernate/");
// Search for DTD
ClassLoader classLoader = this.getClass().getClassLoader();
InputStream dtdStream = classLoader.getResourceAsStream( "net/sf/hibernate/" + systemId.substring( URL.length() ) );

Thanks,
-ramin