XOM API for Processing XML with Java

[Wolfgang Hoschek <whoschek AT lbl.gov>]

A feature was recently added to XOMHandler xom CVS, perhaps for  
better xerces-2.7.1 support.
Unfortunately, this breaks stuff for DocType.setInternalSubset() when  
used with crimson as shipped with OSX java 1.4.2.

Uncommenting the following block would make the test pass again. A  
better fix might to only execute the block only if xerces is detected.

    public void externalEntityDecl(String name,
       String publicID, String systemID) {


...
            if (locator != null && URIUtil.isAbsolute(systemID)) {
                String documentURL = locator.getSystemId();
                systemID = URIUtil.relativize(documentURL, systemID);
            }

...
    }


******* xerces **********
[hoschek /testsuite] export JAVA_OPTS='-Djava.endorsed.dirs=/Users/ 
hoschek/unix/java/share/apache/xerces-2.7.1'
[hoschek /testsuite] time fire-java nux.xom.tests.BinaryXMLTest check  
bnux 0 1 1 copy/copy21.xml
patchesEnabled=true
now processing copy/copy21.xml
[hoschek /testsuite]


******* crimson **********
[hoschek /testsuite] unset JAVA_OPTS
[hoschek /testsuite] time fire-java nux.xom.tests.BinaryXMLTest check  
bnux 0 1 1 copy/copy21.xml
patchesEnabled=true
now processing copy/copy21.xml
Exception in thread "main" nux.xom.binary.BinaryParsingException:  
Malformed internal DTD subset: Relative URI "ent21.xml"; can not be  
resolved without a base URI.
        at nux.xom.binary.BinaryXMLCodec.deserialize 
(BinaryXMLCodec.java:463)
        at nux.xom.binary.BinaryXMLCodec.deserialize 
(BinaryXMLCodec.java:378)
        at nux.xom.tests.BinaryXMLTest.main(BinaryXMLTest.java:227)
Caused by: nu.xom.IllegalDataException: Malformed internal DTD  
subset: Relative URI "ent21.xml"; can not be resolved without a base  
URI.
        at nu.xom.Verifier.checkInternalDTDSubset(Verifier.java:1423)
        at nu.xom.DocType.setInternalDTDSubset(DocType.java:237)
        at nux.xom.binary.BinaryXMLCodec.readDocTypeF 
(BinaryXMLCodec.java:1019)
        at nux.xom.binary.BinaryXMLCodec.readDocumentChild 
(BinaryXMLCodec.java:755)
        at nux.xom.binary.BinaryXMLCodec.readDocument 
(BinaryXMLCodec.java:693)
        at nux.xom.binary.BinaryXMLCodec.deserialize 
(BinaryXMLCodec.java:460)
        ... 2 more
Caused by: org.xml.sax.SAXParseException: Relative URI "ent21.xml";  
can not be resolved without a base URI.
        at org.apache.crimson.parser.Parser2.fatal(Parser2.java:3376)
        at org.apache.crimson.parser.Parser2.fatal(Parser2.java:3370)
        at org.apache.crimson.parser.Parser2.resolveURI(Parser2.java: 
2952)
        at org.apache.crimson.parser.Parser2.maybeExternalID 
(Parser2.java:2924)
        at org.apache.crimson.parser.Parser2.maybeEntityDecl 
(Parser2.java:2826)
        at org.apache.crimson.parser.Parser2.maybeMarkupDecl 
(Parser2.java:1390)
        at org.apache.crimson.parser.Parser2.maybeDoctypeDecl 
(Parser2.java:1324)
        at org.apache.crimson.parser.Parser2.parseInternal 
(Parser2.java:656)
        at org.apache.crimson.parser.Parser2.parse(Parser2.java:337)
        at org.apache.crimson.parser.XMLReaderImpl.parse 
(XMLReaderImpl.java:448)
        at nu.xom.Verifier.checkInternalDTDSubset(Verifier.java:1420)
        ... 7 more