DOMConfiguration param. from getParameterNames() not recognized by getParameter

Name: rmT116609 Date: 05/18/2004


FULL PRODUCT VERSION :
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b32c)
Java HotSpot(TM) Client VM (build 1.5.0-beta-b32c, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
DOMConfiguration.getParameterNames() returns parameters names that
DOMConfiguration.getParameter(...) does not recognize (even for the same
DOMConfiguration instance).

Something seems out of sync.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
(Compile and run test case below.)

Call getParameterNames to get a list of parameter names known to the
DOM implementation. Call getParameter( name ) to get the current setting
of each supposedly known parameter.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
getParameter should never reject a parameter name from getParameterNames
as unknown (or getParameterNames should never return an unknown
parameter).

ACTUAL -
(See exact error below.)

getParameter throws a FEATURE_NOT_FOUND DOMException, saying it
doesn't recognize the feature name even though the feature name came
right from the DOM implementation.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
org.w3c.dom.DOMException: FEATURE_NOT_FOUND: The parameter http://xml.org/sax/features/validation is not recognized.
at com.sun.org.apache.xerces.internal.dom.DOMConfigurationImpl.getParameter(DOMConfigurationImpl.java:863)
at prototype.ExploreDOM.main(Bug.java:29)
Exception in thread "main"


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package prototype;

import javax.xml.parsers.*;

import org.w3c.dom.*;


class Bug
{

    public static void main( String[] args )
throws Exception
    {
DocumentBuilder builder =
DocumentBuilderFactory.newInstance().newDocumentBuilder();

DOMConfiguration config = builder.newDocument().getDomConfig();
{
DOMStringList names = config.getParameterNames();
for ( int sx = 0; sx < names.getLength(); sx++ ) {
String name = names.item( sx );
Object value = config.getParameter( name );
// Throws exception:
// org.w3c.dom.DOMException: FEATURE_NOT_FOUND: The parameter http://xml.org/sax/features/validation is not recognized.
// at com.sun.org.apache.xerces.internal.dom.DOMConfigurationImpl.getParameter(DOMConfigurationImpl.java:863)
// at prototype.ExploreDOM.main(Bug.java:29)
}
}
    } // main( String[] )


} // class Bug

---------- END SOURCE ----------
(Incident Review ID: 270140)
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