RE: Using FastInfoset SAX Parser create a XmlBean

[Radu Preotiuc-Pietro <ra...@bea.com>]

From
http://java.sun.com/j2se/1.5.0/docs/api/org/xml/sax/XMLReader.html#setFe
ature(java.lang.String, boolean)
"All XMLReaders are required to support setting
http://xml.org/sax/features/namespaces to true and
http://xml.org/sax/features/namespace-prefixes to false."

So it looks to me that maybe the FastInfoset impl is not yet finished.

Radu

-----Original Message-----
From: Burkley Frederick G NPRI [mailto:BurkleyFG@Npt.NUWC.Navy.Mil] 
Sent: Wednesday, December 28, 2005 9:59 AM
To: dev@xmlbeans.apache.org
Subject: Using FastInfoset SAX Parser create a XmlBean


This message may be a bit verbose, but please bear with me as I try to
establish background.

I have been working on un-marshalling a FastInfoset compressed binary
XML document to a XmlBean.

The XmlOptions class lets me specify an org.xml.sax.XMLReader, so I do
this via setLoadUseXMLReader().  I am looking at
com.sun.xml.fastinfoset.sax.SAXDocumentParser, as it implements
XmlReader.

I FastInfoset compressed a simple XML instance document.  As background,
my XmlBean class is DatabaseConnectionDocument.java and my XML instance
is databaseConnection.xml.  Now the task is to instantiate a
SAXDocumentParser, set the XmlReader in XmlOptions, and call
DatabaseConnectionDocument.Factory.parse().

My problem is I am getting a RuntimeException related to setting the
Namespaces Feature in FastInfoset.  The full text of the exception is
below.

I looked into the com.sun.xml.fastinfoset.sax.SAXDocumentParser.java
FastInfoset source code.  The setFeature(String name, boolean value)
method is coded to throw a SAXNotRecognizedException if called as in:
setFeature("http://xml.org/sax/features/namespaces", true);

It looks like this is what is happening at Locale.java line 3320 (I have
not looked at the Local.java source code).

So I modified SAXDocumentParser.java to disable the throwing of
SAXNotRecognizedException.  I re-compiled FastInfoset.jar, then
successfully ran my test code.  Thus marshalling a FastInfoset
compressed XML document to a XmlBean.  My test code also appears below.


The bottom line of this (and my question) is:
Am I not configuring something in XmlBeans properly or is there perhaps
an issue with FastInfoset?  Perhaps the FastInfoset code
(SAXDocumentParser.java) ought to no-op the
setFeature("http://xml.org/sax/features/namespaces", true) call rather
than throwing the SAXNotRecognizedException.


Thanks,
Fred Burkley







Exception in thread "main" java.lang.RuntimeException: Feature not
supported: {0}http://xml.org/sax/features/namespaces
        at
org.apache.xmlbeans.impl.store.Locale$SaxLoader.<init>(Locale.java:3329)
        at
org.apache.xmlbeans.impl.store.Locale$XmlReaderSaxLoader.<init>(Locale.j
ava:3050)
        at
org.apache.xmlbeans.impl.store.Locale.getSaxLoader(Locale.java:3026)
        at
org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1267)
        at
org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1254)
        at
org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoa
derBase.java:345)
        at
org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoa
derBase.java:252)
        at
org.mip.xmlBeans.DatabaseConnectionDocument$Factory.parse(DatabaseConnec
tionDocument.java:59)
        at
sample.FastInfosetXmlBeanUnmarshaller.main(FastInfosetXmlBeanUnmarshalle
r.java:121)
Caused by: org.xml.sax.SAXNotRecognizedException: Feature not supported:
{0}http://xml.org/sax/features/namespaces
        at
com.sun.xml.fastinfoset.sax.SAXDocumentParser.setFeature(Unknown Source)
        at
org.apache.xmlbeans.impl.store.Locale$SaxLoader.<init>(Locale.java:3320)
        ... 8 more



------ Here is my test code -------------
    // Instantiate the FI SAX parser
    XMLReader saxReader = new SAXDocumentParser();
    xmlOptions = new XmlOptions();
    xmlOptions.setLoadUseXMLReader(saxReader);
    try {
      DatabaseConnectionDocument dcdoc =
DatabaseConnectionDocument.Factory.parse(new File(inputFileName),
xmlOptions);
      System.out.println(dcdoc);
    }
    catch (Exception ex) {
      ex.printStackTrace();
      System.exit(1);
    }




        

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