SAXPArser parse() method throws IllegalStateException

Name: gm110360 Date: 05/12/2004


FULL PRODUCT VERSION :
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b32c)
Java HotSpot(TM) Client VM (build 1.5.0-beta-b32c, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

EXTRA RELEVANT SYSTEM CONFIGURATION :
JAXP with the Tiger Release

A DESCRIPTION OF THE PROBLEM :
The parse() method throws IllegalStateException when validating a document using an XML Schema. The parser will ONLY validate if a schema is identified programmatically, not from xsi: hint.
Note: the SAXLocalNameCount example from JAXP site does not validate - implement ignorableWhitespace() to confirm this, as a validating parser MUST call this method.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the sample code.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Either correct parsing output or parsing error messages.
ACTUAL -
IllegalStateException was thrown on processing the end element tag for first nested element.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
Starting parsing of sketch.xml

Start document:
Start "xsi" namespace scope. URI: http://www.w3.org/2001/XMLSchema-instance
Start element: local name: sketch qname: sketch uri:
Attributes:
  Name : xsi:noNamespaceSchemaLocation
  Type : CDATA
  Value: Sketcher.xsd
Ignorable whitespace:

Start element: local name: line qname: line uri:
Attributes:
  Name : angle
  Type : CDATA
  Value: 0
Ignorable whitespace:

Start element: local name: color qname: color uri:
Attributes:
  Name : R
  Type : CDATA
  Value: 0
  Name : G
  Type : CDATA
  Value: 0
  Name : B
  Type : CDATA
  Value: 255
java.lang.IllegalStateException
        at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorHandlerImpl+3.checkState(Unknown Source)
        at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorHandlerImpl+3.getElementTypeInfo(Unknown Source)
        at com.sun.org.apache.xerces.internal.jaxp.JAXPValidatorComponent$SAX2XNI.elementAug(Unknown Source)
        at com.sun.org.apache.xerces.internal.jaxp.JAXPValidatorComponent$SAX2XNI.endElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.jaxp.XNI2SAX.endElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.jaxp.validation.XNI2SAXEx.endElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.endElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorHandlerImpl.endElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.jaxp.XNI2SAX.endElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.jaxp.JAXPValidatorComponent.endElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.endElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.xinclude.XIncludeHandler.endElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
        at javax.xml.parsers.SAXParser.parse(Unknown Source)
        at javax.xml.parsers.SAXParser.parse(Unknown Source)
        at TrySAXHandler.process(TrySAXHandler.java:51)
        at TrySAXHandler.main(TrySAXHandler.java:20)


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import org.xml.sax.SAXException;
import java.io.File;
import java.io.IOException;

public class TrySAXHandler {
  public static void main(String args[]) {
    if(args.length == 0) {
      System.out.println("No file to process. Usage is:"
                         +"\n java TrySax \"xmlFilename\" "
                         +"\nor:\n java TrySaxHandler \"xmlFilename\" \"schemaFileName\" ");
      return;
    }
    File xmlFile = new File(args[0]);
    File schemaFile = args.length>1 ? new File(args[1]) : null;
    process(xmlFile, schemaFile);
  }

  private static void process(File file, File schemaFile) {
    SAXParserFactory spf = SAXParserFactory.newInstance();
    SAXParser parser = null;
    spf.setNamespaceAware(true);
    spf.setValidating(true);
    try {
     if(schemaFile != null) {
       SchemaFactory sf = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");
       spf.setSchema(sf.newSchema(schemaFile));
     }
     parser = spf.newSAXParser();
     parser.setProperty("http://java.sun.com/xml/jaxp/properties/schemaLanguage",
                           "http://www.w3.org/2001/XMLSchema");
    
    }
    catch(SAXException e) {
      e.printStackTrace(System.err);
      System.exit(1);
    }
    catch(ParserConfigurationException e) {
      e.printStackTrace(System.err);
      System.exit(1);
    }

    System.out.println("\nStarting parsing of "+file+"\n");
    MySAXHandler handler = new MySAXHandler();
    try {
       parser.parse(file, handler);
    } catch(IOException e) {
      e.printStackTrace(System.err);
    }
    catch(SAXException e) {
      e.printStackTrace(System.err);
    }
    catch(IllegalStateException e) {
      e.printStackTrace(System.err);
    }
  }
}

// SAX Event handler
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXParseException;
import org.xml.sax.SAXException;

public class MySAXHandler extends DefaultHandler {
  public void startDocument() {
   System.out.println("Start document: ");
  }
    public void endDocument() {
   System.out.println("End document: ");
  }
  
  public void startElement(String uri, String localName, String qname,
                                                               Attributes attr)
  {
    System.out.println("Start element: local name: " + localName + " qname: "
                                                        + qname + " uri: "+uri);
    int attrCount = attr.getLength();
    if(attrCount>0) {
      System.out.println("Attributes:");
      for(int i = 0 ; i<attrCount ; i++) {
        System.out.println(" Name : " + attr.getQName(i));
        System.out.println(" Type : " + attr.getType(i));
        System.out.println(" Value: " + attr.getValue(i));
      }
    }
  }
  
  public void endElement(String uri, String localName, String qname) {
    System.out.println("End element: local name: " + localName + " qname: "
                                                         + qname + " uri: "+uri);
  }
  
  public void characters(char[] ch, int start, int length) {
    System.out.println("Characters: " + new String(ch, start, length));
  }

  public void ignorableWhitespace(char[] ch, int start, int length) {
    System.out.println("Ignorable whitespace: " + length + " Characters."));
  }

  public void startPrefixMapping(String prefix, String uri) {
    System.out.println("Start \"" + prefix + "\" namespace scope. URI: " + uri);
  }

  public void endPrefixMapping(String prefix) {
    System.out.println("End \"" + prefix + "\" namespace scope.");
  }

  public void warning(SAXParseException spe) {
    System.out.println("Warning at line "+spe.getLineNumber());
    System.out.println(spe.getMessage());
  }

  public void fatalError(SAXParseException spe) throws SAXException {
    System.out.println("Fatal error at line "+spe.getLineNumber());
    System.out.println(spe.getMessage());
    throw spe;
  }
}

/* XML file contents:
<?xml version="1.0" ?>
<sketch xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:noNamespaceSchemaLocation="Sketcher.xsd">
    <line angle="0">
        <color R="0" G="0" B="255"></color>
        <position x="10" y="10" />
        <endpoint x="30" y="40" />
    </line>
</sketch>
*/

/* Schema contents
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    
    <xsd:element name="sketch" type="SketchType"/>

    <!--Type for a sketch root element -->
    <xsd:complexType name="SketchType">
        <xsd:choice minOccurs="0" maxOccurs="unbounded">
            <xsd:element name="line" type="LineType"/>
            <xsd:element name="rectangle" type="RectangleType"/>
            <xsd:element name="circle" type="CircleType"/>
            <xsd:element name="curve" type="CurveType"/>
            <xsd:element name="text" type="TextType"/>
        </xsd:choice>
    </xsd:complexType>

    <!--Type for a line element -->
    <xsd:complexType name="LineType">
        <xsd:sequence>
            <xsd:element name="color" type="ColorType"/>
            <xsd:element name="position" type="PointType"/>
            <xsd:element name="endpoint" type="PointType"/>
        </xsd:sequence>
        <xsd:attribute name="angle" type="xsd:double" use="required"/>
    </xsd:complexType>

    <!--Type for a rectangle element -->
    <xsd:complexType name="RectangleType">
        <xsd:sequence>
            <xsd:element name="color" type="ColorType"/>
            <xsd:element name="position" type="PointType"/>
            <xsd:element name="bottomright" type="PointType"/>
        </xsd:sequence>
        <xsd:attribute name="angle" type="xsd:double" use="required"/>
    </xsd:complexType>

    <!--Type for a circle element -->
    <xsd:complexType name="CircleType">
        <xsd:sequence>
            <xsd:element name="color" type="ColorType"/>
            <xsd:element name="position" type="PointType"/>
        </xsd:sequence>
        <xsd:attribute name="radius" type="xsd:double" use="required"/>
        <xsd:attribute name="angle" type="xsd:double" use="required"/>
    </xsd:complexType>

    <!--Type for a curve element -->
    <xsd:complexType name="CurveType">
        <xsd:sequence>
            <xsd:element name="color" type="ColorType"/>
            <xsd:element name="position" type="PointType"/>
            <xsd:element name="point" type="PointType" minOccurs="1" maxOccurs="unbounded"/>
        </xsd:sequence>
        <xsd:attribute name="angle" type="xsd:double" use="required"/>
    </xsd:complexType>

    <!--Type for a text element -->
    <xsd:complexType name="TextType">
        <xsd:sequence>
            <xsd:element name="color" type="ColorType"/>
            <xsd:element name="position" type="PointType"/>
            <xsd:element name="font" type="FontType"/>
            <xsd:element name="string" type="xsd:string"/>
        </xsd:sequence>
        <xsd:attribute name="angle" type="xsd:double" use="required"/>
    </xsd:complexType>

    <!--Type for a font element -->
    <xsd:complexType name="FontType">
        <xsd:attribute name="fontname" type="xsd:string" use="required"/>
        <xsd:attribute name="fontstyle" use="required">
            <xsd:simpleType>
                <xsd:restriction base="xsd:string">
                    <xsd:enumeration value="plain"/>
                    <xsd:enumeration value="bold"/>
                    <xsd:enumeration value="italic"/>
                    <xsd:enumeration value="bold-italic"/>
                </xsd:restriction>
            </xsd:simpleType>
        </xsd:attribute>
    </xsd:complexType>

    <!--Type for elements representing points -->
    <xsd:complexType name="PointType">
        <xsd:attributeGroup ref="coords"/>
    </xsd:complexType>

    <!--Type for a color element -->
    <xsd:complexType name="ColorType">
        <xsd:attribute name="R" type="xsd:nonNegativeInteger" use="required"/>
        <xsd:attribute name="G" type="xsd:nonNegativeInteger" use="required"/>
        <xsd:attribute name="B" type="xsd:nonNegativeInteger" use="required"/>
    </xsd:complexType>

    <!-- Attribute group specifying point coordinates -->
    <xsd:attributeGroup name="coords">
        <xsd:attribute name="x" type="xsd:double" use="required"/>
        <xsd:attribute name="y" type="xsd:double" use="required"/>
    </xsd:attributeGroup>
</xsd:schema>
*/

---------- END SOURCE ----------
(Incident Review ID: 260971)
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