IV75654: SCHEMAGEN FAILS WITH STACKOVERFLOWERROR IF THE ATTRIBUTE OF THE CLASS HAS A REFERENCE TO THE SAME CLASS

APAR status

• Closed as program error.

Error description

• Error Message: StackOverflowError
  .
  Stack Trace: Problem encountered during annotation processing;
  see stacktrace below for more information.
  java.lang.StackOverflowError
   at
  java.lang.reflect.WeakCache.expungeStaleEntries(WeakCache.java:1
  99)
   at java.lang.reflect.WeakCache.get(WeakCache.java:113)
   at java.lang.reflect.Proxy.getProxyClass0(Proxy.java:441)
   at java.lang.reflect.Proxy.newProxyInstance(Proxy.java:716)
   at
  com.sun.xml.internal.txw2.ContainerElement._cast(ContainerElemen
  t.java:365)
   at
  com.sun.xml.internal.txw2.ContainerElement._element(ContainerEle
  ment.java:386)
   at
  com.sun.xml.internal.txw2.ContainerElement.addElement(ContainerE
  lement.java:230)
   at
  com.sun.xml.internal.txw2.ContainerElement.invoke(ContainerEleme
  nt.java:157)
   at com.sun.proxy.$Proxy15.complexType(Unknown Source)
   at
  com.sun.xml.internal.bind.v2.schemagen.XmlSchemaGenerator$Namesp
  ace.writeClass(XmlSchemaGenerator.java:910)
   at
  com.sun.xml.internal.bind.v2.schemagen.XmlSchemaGenerator$Namesp
  ace.writeTypeRef(XmlSchemaGenerator.java:781)
   at
  com.sun.xml.internal.bind.v2.schemagen.XmlSchemaGenerator$Namesp
  ace.writeTypeRef(XmlSchemaGenerator.java:752)
   at
  com.sun.xml.internal.bind.v2.schemagen.XmlSchemaGenerator$Namesp
  ace.access$1700(XmlSchemaGenerator.java:496)
   at
  com.sun.xml.internal.bind.v2.schemagen.XmlSchemaGenerator$Namesp
  ace$2.write(XmlSchemaGenerator.java:1074)
   at
  com.sun.xml.internal.bind.v2.schemagen.Tree$Optional.write(Tree.
  java:182)
   at
  com.sun.xml.internal.bind.v2.schemagen.Tree$Repeated.write(Tree.
  java:208)
   at
  com.sun.xml.internal.bind.v2.schemagen.Tree$Group.write(Tree.jav
  a:252)
   at
  com.sun.xml.internal.bind.v2.schemagen.Tree.write(Tree.java:135)
  .
  

Local fix

• annotating the element which is referring to the same class with
  @XmlElementRef.
  

Problem summary

• While generating schemagen on a Java class which has an instance
  variable referring to the same class then XMLSchemagenerator is
  recursively writing the same class resulting in stackoverflow.
  

Problem conclusion

• The JDK has been updated to validate whether the class is
  already written to avoid recursive writing of the same class.
  .
  This APAR will be fixed in the following Java Releases:
   6 SR16 FP25 (6.0.16.25)
   6 R1 SR8 FP25 (6.1.8.25)
   7 R1 SR3 FP40 (7.1.3.40)
   7 SR9 FP40 (7.0.9.40)
   8 SR2 FP10 (8.0.2.10)
  .
  Contact your IBM Product's Service Team for these Service
  Refreshes and Fix Packs.
  For those running stand-alone, information about the available
  Service Refreshes and Fix Packs can be found at:
   https://www.ibm.com/developerworks/java/jdk/
  

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:

  IV78218

• Fixed component name

  JAVA CLASS LIBS

• Fixed component ID

  620700130

Applicable component levels

• R600 PSY

     UP

• R700 PSY

     UP

• R800 PSY

     UP