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List:       xerces-j-dev
Subject:    Re: How to configure xerces_2_9_0 with java 6 and multiple error response ?
From:       Michael Glavassevich <mrglavas () ca ! ibm ! com>
Date:       2008-01-24 19:17:57
Message-ID: OF12E98820.36890167-ON852573DA.0069494D-852573DA.006A05E3 () ca ! ibm ! com
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"Jing Yang" <jyang@jbmanagement.com> wrote on 01/24/2008 01:51:28 PM:

> Two questions:
> 1)      How to use xerces_2_9_0 rather than the default schema
> parser of java 6 ?

Putting Xerces' jars (xml-apis.jar and xercesImpl.jar) on the classpath
should work. Failing that you should use the Endorsed Standards Override
Mechanism. More info here: http://java.sun.com/j2se/1.5.0
/docs/guide/standards/.

> 2)       Try to use jaxp 1.3 APIs to perform schema validation, but
> same error was reported twice.  How to fix it?

They might look the same but they're violations of different schema
constraints. Xerces reports an error for each.

>           The error was
> Line:3 Column:77 cvc-datatype-valid.1.2.1: '123a' is not a valid
> value for 'integer'.
> Line:3 Column:77 cvc-type.3.1.3: The value '123a' of element
> 'number' is not valid.
>
> The codes are listed as below:
>       SchemaFactory factory =  SchemaFactory.newInstance("http:
> //www.w3.org/2001/XMLSchema");
>       File schemaLocation = new File(schemaPath);
>       try{
>             Schema schema = factory.newSchema(schemaLocation);
>             Validator validator = schema.newValidator();
>             ErrorHandler lenient = new ForgivingErrorHandler();
>             validator.setErrorHandler(lenient);
>             Source source = new StreamSource(input);
>
>             validator.validate(source);
>
>       }
>       catch(Exception e){
>             System.out.println("ex "+e);
> }
>
> public class ForgivingErrorHandler implements ErrorHandler {
>       static Logger logger = Logger.getLogger(ForgivingErrorHandler.class
> .getName());
>       private ArrayList<String> errors;
>       public void warning(SAXParseException ex) {
>              String msg=getFormattedMsg(ex);
>              putError(msg);
>                 }
>
>     public void error(SAXParseException ex)  {
>        String msg=getFormattedMsg(ex);
>        putError(msg);
>        System.out.println(msg);
>     }
>     public void fatalError(SAXParseException ex) throws SAXException{
>       throw ex;
>     }
>     private String getFormattedMsg(SAXParseException ex){
>       StringBuffer strBuff=new StringBuffer();
>       strBuff.append("Line:");
>       strBuff.append(ex.getLineNumber());
>       strBuff.append(" Column:");
>       strBuff.append(ex.getColumnNumber());
>       strBuff.append(" ");
>       strBuff.append(ex.getMessage());
>       return strBuff.toString();
>     }
>     private void  putError(String msg){
>       if(errors ==null){
>             errors=new ArrayList<String>();
>       }
>       errors.add(msg);
>     }
>     public ArrayList<String> getErrors(){
>       return errors;
>     }

Michael Glavassevich
XML Parser Development
IBM Toronto Lab
E-mail: mrglavas@ca.ibm.com
E-mail: mrglavas@apache.org


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