Hello Michael,
Thank you. You make it look so easy!
It seems to work now, but I'd like to confirm a few things:
I had the following property set:
factory.setAttribute(JAXP_SCHEMA_LANGUAGE, W3C_XML_SCHEMA);
(schemaLanguage set to http://www.w3.org/2001/XMLSchema)
Do I still need it? It seems to work both with and without it.
I also have the following set:
factory.setValidating( true );
How does this differ from [1]? Do I still need it?
(I noticed that with this line and without [1], it doesn't validate
properly)
Thanks,
Dies
Michael Glavassevich wrote:
Hello Dies,
When you set the schemaLanguage property to
http://www.w3.org/2001/XMLSchema only schema validation is performed. If
you want to configure Xerces so that it performs DTD validation if the
document has a DTD and/or schema validation if a schema grammar is
specified, try setting the validation [1], schema validation [2] and
dynamic validation [3] features to true.
[1] http://xml.apache.org/xerces2-j/features.html#validation
[2] http://xml.apache.org/xerces2-j/features.html#validation.schema
[3] http://xml.apache.org/xerces2-j/features.html#validation.dynamic
Dies Koper <[EMAIL PROTECTED]> wrote on 08/03/2005 09:26:38 PM:
Hello all,
I am trying to parse xml files, that are either DTD or schema based.
I expected the parser to automatically determine whether the files are
DTD or schema based when it parses them and validate them accordingly,
but I can't get it to work.
It validates my DTD based file fine, I then need to set the
"http://java.sun.com/xml/jaxp/properties/schemaLanguage"; attribute to
"http://www.w3.org/2001/XMLSchema"; to be able to read the schema based
file, that also works fine. But with this attribute set I cannot read
the DTD based file anymore, it gives the following error:
org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration of
element 'ejb-jar'.
I set up the parser as follows:
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating( true );
factory.setNamespaceAware(true);
String JAXP_SCHEMA_LANGUAGE =
"http://java.sun.com/xml/jaxp/properties/schemaLanguage";;
String W3C_XML_SCHEMA = "http://www.w3.org/2001/XMLSchema";;
factory.setAttribute(JAXP_SCHEMA_LANGUAGE, W3C_XML_SCHEMA);
DocumentBuilder builder = factory.newDocumentBuilder();
(xercesImpl.jar 2.7.1 and xml-apis.jar are in JDK14\JRE\lib\ext)
The xml files look like:
[DTD based]
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise
JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd";>
<ejb-jar>
...
[schema based]
<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar version="2.1" xmlns="http://java.sun.com/xml/ns/j2ee";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd";>
...
The culprit seems to be the setting of the attribute: with it schema
based files work and DTD based files not, without it the other way
around.
How should I change my code to be able to parse and validate both?
Thanks,
Dies
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Michael Glavassevich
XML Parser Development
IBM Toronto Lab
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