I have a maxLength facet on a complexType with simpleContent that extends a base
complexType. Schema validation performed by the included program with the
included schemas & xml file results in the stack trace listed below. Note the
message refers to the relevant anonymous type as [type 'null'] which is not
helpful. In this case, a more helpful error message would refer to either the
complexType name itself or its base type name. Should I open a JIRA for this issue?

STACK TRACE:

org.xml.sax.SAXParseException: cvc-maxLength-valid: Value '
        commentZZZZZZZZZZZZZZZZZZ
    ' with length = '30' is not facet-valid with respect to maxLength '20' for
type 'null'.
    at
org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
    at org.apache.xerces.util.ErrorHandlerWrapper.error(Unknown Source)
    at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
    at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
    at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
    at
org.apache.xerces.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(Unknown
Source)
    at org.apache.xerces.impl.xs.XMLSchemaValidator.reportSchemaError(Unknown
Source)
    at
org.apache.xerces.impl.xs.XMLSchemaValidator.elementLocallyValidComplexType(Unknown
Source)
    at
org.apache.xerces.impl.xs.XMLSchemaValidator.elementLocallyValidType(Unknown Source)
    at
org.apache.xerces.impl.xs.XMLSchemaValidator.processElementContent(Unknown Source)
    at org.apache.xerces.impl.xs.XMLSchemaValidator.handleEndElement(Unknown Source)
    at org.apache.xerces.impl.xs.XMLSchemaValidator.endElement(Unknown Source)
    at org.apache.xerces.jaxp.validation.DOMValidatorHelper.finishNode(Unknown
Source)
    at org.apache.xerces.jaxp.validation.DOMValidatorHelper.validate(Unknown Source)
    at org.apache.xerces.jaxp.validation.DOMValidatorHelper.validate(Unknown Source)
    at org.apache.xerces.jaxp.validation.ValidatorImpl.validate(Unknown Source)
    at javax.xml.validation.Validator.validate(Validator.java:82)
    at test.XercesTest.testValidateComplexTypeWithSimpleContent(XercesTest.java:58)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:585)
    at junit.framework.TestCase.runTest(TestCase.java:164)
    at junit.framework.TestCase.runBare(TestCase.java:130)
    at junit.framework.TestResult$1.protect(TestResult.java:106)
    at junit.framework.TestResult.runProtected(TestResult.java:124)
    at junit.framework.TestResult.run(TestResult.java:109)
    at junit.framework.TestCase.run(TestCase.java:120)
    at
org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
    at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
    at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
    at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
    at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

TEST PROGRAM:

package test;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.xml.XMLConstants;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Source;
import javax.xml.transform.dom.DOMSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.Validator;

import junit.framework.TestCase;

import org.w3c.dom.Document;
import org.xml.sax.SAXException;

public class XercesTest extends TestCase
{

  public void testValidateComplexTypeWithSimpleContent() throws IOException,
ParserConfigurationException, SAXException
  {
      System.setProperty(
          "javax.xml.parsers.DocumentBuilderFactory",
"org.apache.xerces.jaxp.DocumentBuilderFactoryImpl");
      System.setProperty(
          "javax.xml.parsers.SaxParserFactory",
"org.apache.xerces.jaxp.SaxParserFactoryImpl");
      System.setProperty(
          "javax.xml.validation.SchemaFactory:http://www.w3.org/2001/XMLSchema",
          "org.apache.xerces.jaxp.validation.XMLSchemaFactory");
     
      DocumentBuilderFactory dFactory = DocumentBuilderFactory.newInstance();
      dFactory.setNamespaceAware(true);

      String[] xsdFileNames =
          new String[] {"substitutionWithExtensionValues.xsd",
"substitutionWithExtensionValues2.xsd"};
      List xsdSourceList = new ArrayList(xsdFileNames.length);
      DocumentBuilder dBuilder = dFactory.newDocumentBuilder();
      for (int i = 0; i < xsdFileNames.length; i++) {
        String xsdFileName = xsdFileNames[i];
        Document document =
dBuilder.parse(getClass().getResourceAsStream(xsdFileName));
        DOMSource domSource = new DOMSource(document);
        xsdSourceList.add(domSource);
      }
      Source[] xsdSources = (Source[]) xsdSourceList.toArray(new
DOMSource[xsdSourceList.size()]);
     
      SchemaFactory schemaFactory =
SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
      Schema schema = schemaFactory.newSchema(xsdSources);
     
      String xmlFileName = "substitutionWithExtensionValues2.xml";
      Document document =
dBuilder.parse(getClass().getResourceAsStream(xmlFileName));
      DOMSource domSource = new DOMSource(document);
     
      Validator validator = schema.newValidator();
      validator.validate(domSource);
  }

}

SUBSTITUTIONWITHEXTENSIONVALUES.XSD

<xsd:schema
    targetNamespace="http://www.example.com/substitutionEV"
    xmlns="http://www.example.com/substitutionEV"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:sev="http://www.example.com/substitutionEV"
    elementFormDefault="qualified">
    <!--
        Licensed to the Apache Software Foundation (ASF) under one
        or more contributor license agreements. See the NOTICE file
        distributed with this work for additional information
        regarding copyright ownership. The ASF licenses this file
        to you under the Apache License, Version 2.0 (the
        "License"); you may not use this file except in compliance
        with the License. You may obtain a copy of the License at
       
        http://www.apache.org/licenses/LICENSE-2.0
       
        Unless required by applicable law or agreed to in writing,
        software distributed under the License is distributed on an
        "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
        KIND, either express or implied. See the License for the
        specific language governing permissions and limitations
        under the License.
    -->
    <xsd:element name="results" type="sev:ResultsType" />

    <xsd:element name="result" type="sev:ResultType" />
    <xsd:element name="myResult" type="sev:MyResultType"
        substitutionGroup="sev:result" />

    <xsd:complexType name="ResultsType">
        <xsd:sequence>
            <xsd:element name="id" type="sev:IdType" />
            <xsd:element ref="sev:result" minOccurs="0"
                maxOccurs="unbounded" />
            <xsd:element name="comment" type="sev:CommentType" />
        </xsd:sequence>
    </xsd:complexType>

    <xsd:complexType name="ResultType">
        <xsd:sequence>
            <xsd:element name="id" type="sev:IdType" />
            <xsd:element name="name" type="xsd:string" />
            <xsd:element name="value" type="sev:ValueType" />
        </xsd:sequence>
    </xsd:complexType>

    <xsd:complexType name="MyResultType">
        <xsd:complexContent>
            <xsd:extension base="sev:ResultType" />
        </xsd:complexContent>
    </xsd:complexType>

    <xsd:simpleType name="IdType">
        <xsd:restriction base="sev:AsciiStringType">
            <xsd:maxLength value="32" />
            <xsd:pattern value="[0-9a-fA-F]*" />
        </xsd:restriction>
    </xsd:simpleType>

    <xsd:simpleType name="AsciiStringType">
        <xsd:restriction base="xsd:string">
            <xsd:pattern value="\p{IsBasicLatin}*" />
        </xsd:restriction>
    </xsd:simpleType>

    <xsd:complexType name="ValueType">
        <xsd:simpleContent>
            <xsd:extension base="sev:Integer32Bit" />
        </xsd:simpleContent>
    </xsd:complexType>

    <xsd:simpleType name="Integer32Bit">
        <xsd:restriction base="xsd:integer">
            <xsd:minInclusive value="0" />
            <xsd:maxInclusive value="4290000000" />
        </xsd:restriction>
    </xsd:simpleType>

    <xsd:complexType name="CommentType">
        <xsd:simpleContent>
            <xsd:extension base="sev:AsciiStringType">
                <xsd:attribute name="language" use="optional">
                    <xsd:simpleType>
                        <xsd:restriction base="xsd:string">
                            <xsd:enumeration value="English" />
                            <xsd:enumeration value="French" />
                            <xsd:enumeration value="Spanish" />
                        </xsd:restriction>
                    </xsd:simpleType>
                </xsd:attribute>
            </xsd:extension>
        </xsd:simpleContent>
    </xsd:complexType>

    <xsd:complexType name="MyCommentType">
        <xsd:simpleContent>
            <xsd:restriction base="sev:CommentType">
                <xsd:minLength value="0" />
                <xsd:maxLength value="40" />
            </xsd:restriction>
        </xsd:simpleContent>
    </xsd:complexType>

</xsd:schema>

SUBSTITUTIONWITHEXTENSIONVALUES2.XSD

<xsd:schema
    targetNamespace="http://www.example.com/substitutionEV2"
    xmlns="http://www.example.com/substitutionEV2"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns:sev2="http://www.example.com/substitutionEV2"
    xmlns:sev="http://www.example.com/substitutionEV"
    elementFormDefault="qualified">
    <!--
        Licensed to the Apache Software Foundation (ASF) under one
        or more contributor license agreements. See the NOTICE file
        distributed with this work for additional information
        regarding copyright ownership. The ASF licenses this file
        to you under the Apache License, Version 2.0 (the
        "License"); you may not use this file except in compliance
        with the License. You may obtain a copy of the License at
       
        http://www.apache.org/licenses/LICENSE-2.0
       
        Unless required by applicable law or agreed to in writing,
        software distributed under the License is distributed on an
        "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
        KIND, either express or implied. See the License for the
        specific language governing permissions and limitations
        under the License.
    -->

   
        schemaLocation="substitutionWithExtensionValues.xsd" />

    <xsd:element name="allResults" type="sev2:AllResultsType" />

    <xsd:complexType name="AllResultsType">
        <xsd:sequence>
            <xsd:element name="id" type="sev2:Id2Type" />
            <xsd:element name="results" minOccurs="0" maxOccurs="unbounded"
                type="sev2:Results2Type" />
            <xsd:element name="comment" type="sev2:Comment2Type" />
        </xsd:sequence>
    </xsd:complexType>

    <xsd:complexType name="Results2Type">
        <xsd:complexContent>
            <xsd:extension base="sev:ResultsType" />
        </xsd:complexContent>
    </xsd:complexType>

    <xsd:simpleType name="Id2Type">
        <xsd:restriction base="sev:IdType">
            <xsd:maxLength value="10" />
        </xsd:restriction>
    </xsd:simpleType>

    <xsd:complexType name="Comment2Type">
        <xsd:simpleContent>
            <xsd:restriction base="sev:CommentType">
                <xsd:minLength value="0" />
                <xsd:maxLength value="20" />
            </xsd:restriction>
        </xsd:simpleContent>
    </xsd:complexType>

</xsd:schema>

SUBSTITUTIONWITHEXTENSIONVALUES2.XML

<?xml version="1.0" encoding="ASCII"?>

    <sev2:id>FFFFFFFFFF</sev2:id>
   
        <sev:id>00000000000000000000</sev:id>
        <sev:result>
            <sev:id>11111111111111111111</sev:id>
            <sev:name>name1</sev:name>
            <sev:value>1</sev:value>
        </sev:result>
        <sev:myResult>
            <sev:id>22222222222222222222</sev:id>
            <sev:name>myName2</sev:name>
            <sev:value>2</sev:value>
        </sev:myResult>
        <sev:comment>comment0</sev:comment>
    </sev2:results>
   
        <sev:id>AAAAAAAAAAAAAAAAAAAA</sev:id>
        <sev:myResult>
            <sev:id>BBBBBBBBBBBBBBBBBBBB</sev:id>
            <sev:name>myNameB</sev:name>
            <sev:value>11</sev:value>
        </sev:myResult>
        <sev:comment>commentA</sev:comment>
    </sev2:results>
    <sev2:comment language="English">
        commentZZZZZZZZZZZZZZZZZZ
    </sev2:comment>
</sev2:allResults>

This issue was just patched in the Apache Xerces head. I want to make sure it
gets patched in JDK Xerces fork as well. Here is the response from the Xerces
developer:

Hi Ron,

We weren't assigning an anonymous type name to the simple type. I just
committed a fix for that. If you pickup the current code from SVN you
should get "#AnonType_Comment2Type" instead of "null" as the type name in
the error message.

Thanks.

Michael Glavassevich
XML Parser Development
IBM Toronto Lab
E-mail: ###@###.###
E-mail: ###@###.###------- Additional comments from rgavlin Mon Nov 5 21:32:10 +0000 2007 -------

The link to the Apache Xerces fix is:
http://svn.apache.org/viewvc/xerces/java/trunk/src/org/apache/xerces/impl/xs/traversers/XSDComplexTypeTraverser.java?r1=591458&r2=591457&pathrev=591458