Does anyone know:
1. How to use a custom entity resolver with a chain of sax filters? In
desperation, I have tried to set my custom resolver for all filters in the
chain, but it doesn't get called when the DTD is encountered in the XML doc.
If I use just the reader alone, it calls my custom resolver.
2. Any answers to my original mail repeated below.
The stack trace follows, with edits by me in [WMF:] :
Now setting up SAX filter chain
now constructing catalog [WMF: This is the entity resolver object] ...
Filter chain setup took 2 secs
Now running SAX filter chain on SJC-09021.xml
java.io.FileNotFoundException: X:[WMF: path removed by me for
security]...dtd (The system cannot find the file specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:103)
at java.io.FileInputStream.<init>(FileInputStream.java:66)
at
sun.net.www.protocol.file.FileURLConnection.connect(FileURLConnection.java:6
9)
at
sun.net.www.protocol.file.FileURLConnection.getInputStream(FileURLConnection
.java:156)
at java.net.URL.openStream(URL.java:960)
at org.apache.xerces.impl.XMLEntityManager.startEntity(Unknown
Source)
at org.apache.xerces.impl.XMLEntityManager.startDTDEntity(Unknown
Source)
at org.apache.xerces.impl.XMLDTDScannerImpl.setInputSource(Unknown
Source)
at
org.apache.xerces.impl.XMLDocumentScannerImpl$DTDDispatcher.dispatch(Unknown
Source)
at
org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at org.apache.xerces.parsers.DTDConfiguration.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.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:371)
at org.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:371)
at org.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:371)
at org.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:371)
at org.xml.sax.helpers.XMLFilterImpl.parse(XMLFilterImpl.java:371)
at
org.apache.xalan.transformer.TrAXFilter.parse(TrAXFilter.java:134)
at
org.apache.xalan.transformer.TrAXFilter.parse(TrAXFilter.java:134)
at
org.apache.xalan.transformer.TrAXFilter.parse(TrAXFilter.java:134)
at
org.apache.xalan.transformer.TrAXFilter.parse(TrAXFilter.java:134)
at
com.lxnx.fab.ce.xeldm.infra.FormatterSAXFilterMain.main(FormatterSAXFilterMa
in.java:149)
Exception in thread "main"
Walt Fitzharris
Lexis Nexis
937-865-6800 X54641
> -----Original Message-----
> From: Fitzharris, Walter M. (LNG-DAY)
> Sent: Friday, June 20, 2003 10:30 AM
> To: '[EMAIL PROTECTED]'
> Cc: '[EMAIL PROTECTED]'
> Subject: xmlfilters with parameters
>
> What happens if you want to use a chain of filters, but you want to pass a
> parameter to one of the stylesheets?
>
> 1) Here's some code that works, but my question is: why doesn't it need to
> recurse a la the xml filter example?
> Notice that in this code, the reader, not the last filter in the chain,
> calls parse(). I really didn't understand why the last filter in the
> chain called parse() anyway (see xmlfilter example in xalan
> release)...it's non-intuitive for me...it would seem that if they were
> truly chained, the front guy in the chain would read (parse) and the last
> guy in the chain would write...like the old "telephone game".
>
> 2) Another question: does this code retain the benefits of being able to
> process huge XML docs, or has it been tainted by the rewiring to add the
> transformer con parameter?
>
> // Create an XMLFilter for each stylesheet
> XMLFilter xmlFilter1 = saxTFactory.newXMLFilter(new
> StreamSource("filter1.xsl"));
> XMLFilter xmlFilter2 = saxTFactory.newXMLFilter(new
> StreamSource("filter2.xsl"));
> XMLFilter xmlFilter3 = saxTFactory.newXMLFilter(new
> StreamSource("filter3.xsl"));
>
> // Get a transformer for this xsl, so can set the parm for it.
> TransformerHandler tHandler = saxTFactory.newTransformerHandler(new
> StreamSource("filter4p.xsl"));
> Transformer t = tHandler.getTransformer();
> t.setParameter("fParam", "FormatterFunctions");
>
> // Create a serializer for the final output of the chain of xsls.
> Serializer serializer = SerializerFactory.getSerializer
>
> (OutputPropertiesFactory.getDefaultMethodProperties("xml"));
> serializer.setOutputStream(System.out);
>
> // Link up the chain
> XMLReader reader = XMLReaderFactory.createXMLReader();
> xmlFilter1.setParent(reader);
> xmlFilter2.setParent(xmlFilter1);
> xmlFilter3.setParent(xmlFilter2);
> xmlFilter3.setContentHandler(tHandler);
> tHandler.setResult(new SAXResult(serializer.asContentHandler()));
>
> // Now go!
> reader.parse(new InputSource("input.xml"));
>
>
> Walt Fitzharris
> Lexis Nexis
> 937-865-6800 X54641
>
