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  1. JDK
  2. JDK-4988387

validation.SchemaFactory: invalid XPath expression is allowed

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    • Subcomponent:
    • Resolved In Build:
      b41
    • CPU:
      generic
    • OS:
      generic
    • Verification:
      Verified

      Description

      Name: erR10175 Date: 02/04/2004


       
        The method

      public Schema newSchema(File schema)

      in the class javax.xml.validation.SchemaFactory does not detect
      invalid XPath expressions in identity-constraint (key/keyref/unique) field
      and selector values.

        The following expressions:

      "./ /.", "| imp:sid", "xpns : *", "xpns :*"

      violate BNFs specified for the selector and field attributes in XML Schema Structures,
      Section 3.11.6 Constraints on Identity-constraint Definition Schema Components.

      The bug affects the following new JCK-15 beta2 tests adopted from W3C XSTC-20020116 testsuite:
          api/xml_schema/msxsdtest/identityConstraint/idJ030.html#idJ030
          api/xml_schema/msxsdtest/identityConstraint/idJ008.html#idJ008
          api/xml_schema/msxsdtest/identityConstraint/idJ017.html#idJ017
          api/xml_schema/msxsdtest/identityConstraint/idJ015.html#idJ015
          api/xml_schema/msxsdtest/identityConstraint/idI022.html#idI022
          api/xml_schema/msxsdtest/identityConstraint/idI016.html#idI016
          api/xml_schema/msxsdtest/identityConstraint/idI014.html#idI014
          api/xml_schema/msxsdtest/identityConstraint/idI007.html#idI007

      The bug is found in jdk1.5.0/beta/b35.

      To reproduce the bug compile and run the following code as shown in the log below.
      ------------------------------------------- test.xsd
      <?xml version="1.0"?>
      <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
              <xsd:element name="root">
                      <xsd:complexType>
                              <xsd:sequence>
                                      <xsd:element ref="tid" maxOccurs="unbounded"/>
                              </xsd:sequence>
                      </xsd:complexType>
                      <xsd:unique name="uid">
                              <xsd:selector xpath=".//tid"/>
                              <xsd:field xpath="./ /."/>
                      </xsd:unique>
              </xsd:element>
              <xsd:element name="tid" type="xsd:string"/>
      </xsd:schema>
      ----------------------------------------------------

      ------------------------------------------ test.java
      import java.io.File;
      import org.xml.sax.SAXException;
      import org.xml.sax.SAXParseException;
      import org.xml.sax.helpers.DefaultHandler;
      import javax.xml.validation.SchemaFactory;

      public class test {

          protected static class ErrorHandler extends DefaultHandler {
              public int errorCounter = 0;

              public void error(SAXParseException e) throws SAXException {
                  System.out.println(e);
                  errorCounter++;
              }

              public void fatalError(SAXParseException e) throws SAXException {
                  System.out.println(e);
                  errorCounter++;
              }
          }

          public static void main(String [] args) {
              SchemaFactory schemaFactory =
                      SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");

              ErrorHandler errorHandler = new ErrorHandler();
              schemaFactory.setErrorHandler(errorHandler);

              try {
                  schemaFactory.newSchema(new File(args[0]));
              } catch (SAXException e) {
                  exit(1, "Fatal Error: " + e);
              }

              if (errorHandler.errorCounter == 0) {
                  exit(1, "Failed: " + args[0] + " is valid");
              } else {
                  exit(0, "Passed.");
              }
          }

          public static void exit(int errCode, String msg) {
              System.out.println(msg);
              System.exit(errCode);
          }
      }
      ----------------------------------------------------

      ------------------------------------------------ log
      $javac test.java && java -showversion test test.xsd
      java version "1.5.0-beta2"
      Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta2-b35)
      Java HotSpot(TM) Client VM (build 1.5.0-beta2-b35, mixed mode)

      Failed: test.xsd is valid
      ----------------------------------------------------

      ======================================================================

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              • Assignee:
                kkawagucsunw Kohsuke Kawaguchi (Inactive)
                Reporter:
                reysunw Rey Rey (Inactive)
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