RE: Creating XSModel/Grammer from dom element

Thu, 18 Dec 2003 21:46:19 -0800

This is no expert. How about moving the customer and name definitions, beore they are referenced? Just something to try, I haven't ever used JAXP.

Swapna

From: "Yang, Jeffrey" <[EMAIL PROTECTED]>
Reply-To: [EMAIL PROTECTED]
To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
Subject: RE: Creating XSModel/Grammer from dom element
Date: Thu, 18 Dec 2003 21:39:11 -0000

I am having problems with validating an xml file against a schema, using JAXP.
The problems are:
1. I get errors saying that the elements in my xml file are NOT declared.
2. it does not validate. even with an invalid (but well-formed) xml file, it
says it is valid, but it still prints the following messages:
3. if I used dtd instead of schema, then the same java code works fine.

---- error message ----
error: org.xml.sax.SAXParseException: Element type "customers" must be
declared.
error: org.xml.sax.SAXParseException: Element type "customer" must be
declared.
error: org.xml.sax.SAXParseException: Element type "name" must be declared.
---- end of error message ----


I wonder what is missing in my code. Here are the schema, the xml file and the
java code

---- schema ----
<?xml version="1.0" encoding="UTF-8" ?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema";>
<xsd:element name="customers">
  <xsd:complexType>
    <xsd:sequence>
      <xsd:element name="customer" ref="customer" maxOccurs="unbounded" />
    </xsd:sequence>
  </xsd:complexType>
</xsd:element>

<xsd:element name="customer">
  <xsd:complexType>
    <xsd:sequence>
      <xsd:element name="name" ref="name" />
    </xsd:sequence>
    <xsd:attribute name="id" type="xsd:int" use="required" />
  </xsd:complexType>
</xsd:element>

<xsd:element name="name" type="xsd:string" />

</xsd:schema>

---- end of schema ----

---- xml ----
<?xml version="1.0" encoding="UTF-8"?>
<customers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:noNamespaceSchemaLocation="customer.xsd">
  <customer id="1">
    <name>jeff yang</name>
  </customer>
</customers>
---- end of xml ----

---- java code ----
import org.xml.sax.helpers.XMLReaderFactory;
import org.xml.sax.*;
import javax.xml.parsers.*;
import org.w3c.dom.*;

public class JaxpParseXml3 implements ErrorHandler
{
  private String propertyFilename = null;
  private String fileDir = null;
  private String dataFilename = null;
  private boolean isValid = true;

  public static void main(String [] args)
  {
    JaxpParseXml3 px = new JaxpParseXml3();
    px.parseDocument1();
  }

public void parseDocument1()
{
try
{
System.setProperty("javax.xml.parsers.DocumentBuilderFactory",
"org.apache.xerces.jaxp.DocumentBuilderFactoryImpl");
DocumentBuilderFactory DBfactory = DocumentBuilderFactory.newInstance();
DBfactory.setValidating(true);
DocumentBuilder parser = DBfactory.newDocumentBuilder();
parser.setErrorHandler(this);
Document doc = parser.parse(new InputSource(new
java.io.FileInputStream("customers.xml")));
if (isValid) System.out.println("document is valid");
else System.out.println("document is INVALID");
}
catch(Exception e)
{
System.out.println(e);
System.out.println("document is INVALID. process is aborted");
}
}

  public void error(SAXParseException e) throws SAXException
  {
    System.out.println("error: " + e);
    isValid = false;
  }

  public void fatalError(SAXParseException e) throws SAXException
  {
    System.out.println("FATAL error: " + e);
    isValid = false;
  }

  public void warning(SAXParseException e) throws SAXException
  {
    System.out.println("warning: " + e);
  }
} //class---- end of java code ----

---- portion of my classpath ----
c:\mylib\java\xerces.jar;c:\mylib\java\jdom.jar;c:\mylib\java\jaxp.jar
---- end of classpath ----


Thanks very much for your help.

Jeff

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