IT25382: XML VALIDATION INCORRECTLY ACCETPS AN EMPTY XS:DOUBLE TYPE AS VALID

APAR status

• Closed as program error.

Error description

• When validating an XML document using an XSD schema, an empty
  element of type xs:double validates successfully when it should
  fail to validate. This incorrect behaviour can be seen using the
  following schema:
  
  <?xml version="1.0" encoding="UTF-8"?>
  <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
  targetNamespace="http://www.example.org/test"
  xmlns:tns="http://www.example.org/test"
  elementFormDefault="qualified">
  <xs:element name="Document">
  <xs:complexType>
  <xs:sequence>
  <xs:element name="intElement" type="xs:int" minOccurs="0" />
  <xs:element name="doubleElement" type="xs:float" minOccurs="0"
  />
  <xs:element name="decimalElement" type="xs:decimal"
  minOccurs="0" />
  </xs:sequence>
  </xs:complexType>
  </xs:element>
  </xs:schema>
  
  The following document is processed correctly and fails to
  validate:
  
  <?xml version="1.0" encoding="UTF-8"?>
  <Document xsi:schemaLocation="http://www.example.org/test
  test.xsd"
  xmlns="http://www.example.org/test"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <decimalElement />
  </Document>
  
  However the following document is processed incorrectly and
  fails to validate:
  
  <?xml version="1.0" encoding="UTF-8"?>
  <Document xsi:schemaLocation="http://www.example.org/test
  test.xsd"
  xmlns="http://www.example.org/test"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <doubleElement />
  </Document>
  

Local fix

• The xs:float type does not suffer from this issue, hence if the
  lower precision of an xs:float is acceptable over an xs:double
  then this can be used as a workaround. Otherwise no local fix is
   available.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of IBM Integration Bus v10 and IBM App Connect
  Enterprise v11
  
  
  Platforms affected:
  z/OS, MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  The XMLNSC parser will incorrectly validate an empty XML element
  of type xs:double as being a valid value.
  

Problem conclusion

• The parser no longer accepts an empty element of type xs:double
  as being valid by default.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v10.0      10.0.0.15
  v11.0      11.0.0.3
  
  The latest available maintenance can be obtained from:
  http://www-01.ibm.com/support/docview.wss?rs=849&uid=swg27006041
  
  If the maintenance level is not yet available,information on
  its planned availability can be found on:
  http://www-1.ibm.com/support/docview.wss?rs=849&uid=swg27006308
  ---------------------------------------------------------------
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  INTEGRATION BUS

• Fixed component ID

  5724J0540

Applicable component levels