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Posted to batik-users@xmlgraphics.apache.org by Emmy Alex <ea...@hermes.tietronix.com> on 2007/05/09 18:52:45 UTC
batik 1.6 to 1.7 migration issue
Hello,
I have an eclipse ide svg viewer that shows svg in a tabbed fashion, using JSVGCanvas. I have overridden the SAXSVGDocumentFactory. I am mainly trying to move to batik1.7 to see if the java heap issue (using batik1.6 libs) that i encounter on opening about 6 to 7 jsvgcanvas instances to display 6 or more svgs go away.
public class EclipseSAXSVGDocumentFactory extends SAXSVGDocumentFactory {
public EclipseSAXSVGDocumentFactory(String parser, boolean dd) {
super(parser, dd);
}
protected Document createDocument(InputSource is) throws IOException {
try {
Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
System.setProperty("javax.xml.parsers.SAXParserFactory", SAXParserFactoryImpl.class.getName());
SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setFeature("http://xml.org/sax/features/namespaces", true);
factory.setFeature("http://xml.org/sax/features/namespace-prefixes", true);
factory.setFeature("http://xml.org/sax/features/validation", isValidating);
SAXParser parser = factory.newSAXParser();
parser.getXMLReader().setContentHandler(this);
parser.getXMLReader().setDTDHandler(this);
parser.getXMLReader().setEntityResolver(this);
parser.getXMLReader().setErrorHandler((errorHandler == null) ? this : errorHandler);
parser.setProperty("http://xml.org/sax/properties/lexical-handler", this);
parser.getXMLReader().parse(is);
} catch (SAXException e) {
Exception ex = e.getException();
if (ex != null && ex instanceof InterruptedIOException) {
throw (InterruptedIOException) ex;
}
throw new IOException(e.getMessage());
} catch (ParserConfigurationException e) {
throw new IOException(e.getMessage());
}
currentNode = null;
Document ret = document;
document = null;
return ret;
}
}
But on my createDocument i get the following exception:
java.lang.NullPointerException
at org.apache.batik.dom.util.SAXDocumentFactory.startElement(SAXDocumentFactory.java:563)
at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source)
at org.apache.xerces.impl.XMLNSDocumentScannerImpl$NSContentDispatcher.scanRootElementHook(Unknown Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
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 com.dlsc.batik.viewer.EclipseSAXSVGDocumentFactory.createDocument(EclipseSAXSVGDocumentFactory.java:41)
at org.apache.batik.dom.util.SAXDocumentFactory.createDocument(SAXDocumentFactory.java:349)
at org.apache.batik.dom.svg.SAXSVGDocumentFactory.createDocument(SAXSVGDocumentFactory.java:201)
at org.apache.batik.dom.svg.SAXSVGDocumentFactory.createSVGDocument(SAXSVGDocumentFactory.java:125)
at org.apache.batik.bridge.DocumentLoader.loadDocument(DocumentLoader.java:106)
at org.apache.batik.swing.svg.SVGDocumentLoader.run(SVGDocumentLoader.java:84)
When i debug the inputsource is not null and the xmlreader is org.apache.xerces.SAXParser in batik1.7. But for batik 1.6 the parser is org.apache.xerces.jaxp.SAXParserImpl.
This code worked perfectly with batik1.6 but not on 1.7 does anybody have any pointers on what is wrong?
Thanks,
Emmy
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Re: batik 1.6 to 1.7 migration issue
Posted by th...@kodak.com.
Hi Emmy,
"Emmy Alex" <ea...@hermes.tietronix.com> wrote on 05/09/2007 12:52:45 PM:
> public class EclipseSAXSVGDocumentFactory extends SAXSVGDocumentFactory
{
> public EclipseSAXSVGDocumentFactory(String parser, boolean dd) {
> super(parser, dd);
> }
>
> protected Document createDocument(InputSource is) throws IOException
{
> try {
[...]
> SAXParser parser = factory.newSAXParser();
the SAXParser 'parser' is now a member of the SAXSVGDocumentFactory,
so I think you just need to change this line to:
parser = factory.newSAXParser();
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