wsdl2java throws NullPointerException
-------------------------------------

                 Key: AXIS2-5087
                 URL: https://issues.apache.org/jira/browse/AXIS2-5087
             Project: Axis2
          Issue Type: Bug
          Components: adb
    Affects Versions: 1.5.5
         Environment: java version "1.6.0_22"
OpenJDK Runtime Environment (IcedTea6 1.10.2) (6b22-1.10.2-0ubuntu1~11.04.1)
OpenJDK 64-Bit Server VM (build 20.0-b11, mixed mode)

Linux C-3PO 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 
x86_64 x86_64 GNU/Linux 
            Reporter: Erwin Liem


according to [AXIS2-1026] such an error message was a bug, but should had 
already resolved. I'm using Axis2 1.5.5 and get this message during generating 
client stubs. 

Exception in thread "main" 
org.apache.axis2.wsdl.codegen.CodeGenerationException: 
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
        at 
org.apache.axis2.wsdl.codegen.CodeGenerationEngine.generate(CodeGenerationEngine.java:271)
        at org.apache.axis2.wsdl.WSDL2Code.main(WSDL2Code.java:35)
        at org.apache.axis2.wsdl.WSDL2Java.main(WSDL2Java.java:24)
Caused by: java.lang.RuntimeException: 
java.lang.reflect.InvocationTargetException
        at 
org.apache.axis2.wsdl.codegen.extension.SimpleDBExtension.engage(SimpleDBExtension.java:53)
        at 
org.apache.axis2.wsdl.codegen.CodeGenerationEngine.generate(CodeGenerationEngine.java:224)
        ... 2 more
Caused by: java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at 
org.apache.axis2.wsdl.codegen.extension.SimpleDBExtension.engage(SimpleDBExtension.java:50)
        ... 3 more
Caused by: org.apache.axis2.schema.SchemaCompilationException: 
java.lang.NullPointerException
        at 
org.apache.axis2.schema.SchemaCompiler.compile(SchemaCompiler.java:289)
        at 
org.apache.axis2.schema.ExtensionUtility.invoke(ExtensionUtility.java:103)
        ... 8 more
Caused by: java.lang.NullPointerException
        at 
org.apache.axis2.schema.SchemaCompiler.isComponetExists(SchemaCompiler.java:2723)
        at 
org.apache.axis2.schema.SchemaCompiler.getParentSchemaFromIncludes(SchemaCompiler.java:2670)
        at 
org.apache.axis2.schema.SchemaCompiler.getParentSchemaFromIncludes(SchemaCompiler.java:2704)
        at 
org.apache.axis2.schema.SchemaCompiler.getParentSchema(SchemaCompiler.java:2644)
        at 
org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:695)
        at 
org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:552)
        at 
org.apache.axis2.schema.SchemaCompiler.process(SchemaCompiler.java:1991)
        at 
org.apache.axis2.schema.SchemaCompiler.processParticle(SchemaCompiler.java:1874)
        at 
org.apache.axis2.schema.SchemaCompiler.processComplexType(SchemaCompiler.java:1081)
        at 
org.apache.axis2.schema.SchemaCompiler.processNamedComplexSchemaType(SchemaCompiler.java:1017)
        at 
org.apache.axis2.schema.SchemaCompiler.processSchema(SchemaCompiler.java:931)
        at 
org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:592)
        at 
org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:552)
        at 
org.apache.axis2.schema.SchemaCompiler.process(SchemaCompiler.java:1991)
        at 
org.apache.axis2.schema.SchemaCompiler.processParticle(SchemaCompiler.java:1874)
        at 
org.apache.axis2.schema.SchemaCompiler.processComplexType(SchemaCompiler.java:1081)
        at 
org.apache.axis2.schema.SchemaCompiler.processNamedComplexSchemaType(SchemaCompiler.java:1017)
        at 
org.apache.axis2.schema.SchemaCompiler.processSchema(SchemaCompiler.java:931)
        at 
org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:592)
        at 
org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:552)
        at 
org.apache.axis2.schema.SchemaCompiler.process(SchemaCompiler.java:1991)
        at 
org.apache.axis2.schema.SchemaCompiler.processParticle(SchemaCompiler.java:1874)
        at 
org.apache.axis2.schema.SchemaCompiler.processComplexType(SchemaCompiler.java:1081)
        at 
org.apache.axis2.schema.SchemaCompiler.processAnonymousComplexSchemaType(SchemaCompiler.java:980)
        at 
org.apache.axis2.schema.SchemaCompiler.processSchema(SchemaCompiler.java:934)
        at 
org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:592)
        at 
org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:563)
        at 
org.apache.axis2.schema.SchemaCompiler.compile(SchemaCompiler.java:370)
        at 
org.apache.axis2.schema.SchemaCompiler.compile(SchemaCompiler.java:280)
        ... 9 more

Can someone help me?

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