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  1. JDK
  2. JDK-8165569

Lambdas throwing NPE

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    • x86_64
    • windows_7

    Description

      FULL PRODUCT VERSION :
      java version "1.8.0_05"
      Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
      Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode)

      ADDITIONAL OS VERSION INFORMATION :
      WIndows & Enterprise Service Pack 1

      A DESCRIPTION OF THE PROBLEM :
      I cannot use to lambdas in the same call - each lambda works seperately but not together. The commented out version works fine. As does partial substitution of each Callback.

      //Pointcut definition

          @Pointcut("execution(* com.tda.amv.batch.tasklet..execute(..))")
          public void retryable() {
              log.debug("In retryable() Pointcut");
          }
          
          @Around("retryable()")
          public Object aroundRetryableMethods(ProceedingJoinPoint joinPoint) {
              try {
                  return retryTemplate.execute(retryContext -> (RepeatStatus)joinPoint.proceed(), retryContext -> RepeatStatus.FINISHED);
              
              
      // return retryTemplate.execute(new RetryCallback<RepeatStatus, Throwable>(){
      //
      // @Override
      // public RepeatStatus doWithRetry(RetryContext retryContext) throws Throwable
      // {
      // return (RepeatStatus) joinPoint.proceed();
      // }
      //
      // }, new RecoveryCallback<RepeatStatus>(){
      //
      // @Override
      // public RepeatStatus recover(RetryContext arg0) throws Exception
      // {
      // return RepeatStatus.FINISHED;
      // }
      //
      // });

              } catch (Throwable e) {
                  throw new RuntimeException(e);
              }
          }


      // junit test method

      @Test
      public void test() throws Exception
      {
      log.debug("In test() method...");

      server.expect(requestTo(url))
      .andExpect(method(HttpMethod.GET))
      .andRespond(withSuccess("{\"totalCount\":3,\"failedCount\":0,\"completionCount\":0,\"processingCount\":2}", MediaType.APPLICATION_JSON));

      getIrebalStatusTasklet.beforeStep(stepExecution);
      getIrebalStatusTasklet.execute(null, null);

      server.verify();


      }

      //Tasklet class
      public class XYZTasklet implements Tasklet
      {
      Integer id;

      @Override
      public RepeatStatus execute(StepContribution contribution, ChunkContext chunkContext) throws Exception
      {
      log.debug("In execute() method...");

      String url = UriComponentsBuilder.newInstance()
      .scheme("http")
      .host(host)
      .port(port)
      .path(getIrebalStatusPath)
      .build(false)
      .toString();

      ResponseEntity<XYZ> response = restTemplate.getForEntity(url, XYZ.class,id);

      return RepeatStatus.FINISHED;
      }
      }




      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      run the junit test

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      test completes

      ERROR MESSAGES/STACK TRACES THAT OCCUR :
      An exception has occurred in the compiler (1.8.0_05). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include
      your program and the following diagnostic in your report. Thank you.
      java.lang.NullPointerException
              at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.trackable(Flow.java:1476)
              at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.visitVarDef(Flow.java:1801)
              at com.sun.tools.javac.comp.Flow$AssignAnalyzer.visitVarDef(Flow.java:2516)
              at com.sun.tools.javac.tree.JCTree$JCVariableDecl.accept(JCTree.java:846)
              at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
              at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:389)
              at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.scan(Flow.java:1367)
              at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.visitLambda(Flow.java:2225)
              at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1618)
              at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
              at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:389)
              at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.scan(Flow.java:1367)
              at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.scanExpr(Flow.java:1596)
              at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.scanExprs(Flow.java:1608)
              at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.visitApply(Flow.java:2205)
              at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1459)
              at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:49)
              at com.sun.tools.javac.comp.Flow$BaseAnalyzer.scan(Flow.java:389)
              at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.scan(Flow.java:1367)
              at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.analyzeTree(Flow.java:2370)
              at com.sun.tools.javac.comp.Flow$AbstractAssignAnalyzer.analyzeTree(Flow.java:2353)
              at com.sun.tools.javac.comp.Flow.analyzeLambdaThrownTypes(Flow.java:242)
              at com.sun.tools.javac.comp.Attr.visitLambda(Attr.java:2400)
              at com.sun.tools.javac.tree.JCTree$JCLambda.accept(JCTree.java:1618)
              at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:596)
              at com.sun.tools.javac.comp.DeferredAttr$2.complete(DeferredAttr.java:270)
              at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:231)
              at com.sun.tools.javac.comp.DeferredAttr$DeferredType.check(DeferredAttr.java:218)
              at com.sun.tools.javac.comp.Resolve$MethodResultInfo.check(Resolve.java:976)
              at com.sun.tools.javac.comp.Resolve$4.checkArg(Resolve.java:822)
              at com.sun.tools.javac.comp.Resolve$AbstractMethodCheck.argumentsAcceptable(Resolve.java:733)
              at com.sun.tools.javac.comp.Resolve$4.argumentsAcceptable(Resolve.java:831)
              at com.sun.tools.javac.comp.Infer.instantiateMethod(Infer.java:162)
              at com.sun.tools.javac.comp.Resolve.rawInstantiate(Resolve.java:566)
              at com.sun.tools.javac.comp.Resolve.checkMethod(Resolve.java:603)
              at com.sun.tools.javac.comp.Attr.checkMethod(Attr.java:3777)
              at com.sun.tools.javac.comp.Attr.checkIdInternal(Attr.java:3583)
              at com.sun.tools.javac.comp.Attr.checkMethodIdInternal(Attr.java:3490)
              at com.sun.tools.javac.comp.Attr.checkMethodId(Attr.java:3469)
              at com.sun.tools.javac.comp.Attr.checkId(Attr.java:3456)
              at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:3338)
              at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1891)
              at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:596)
              at com.sun.tools.javac.comp.Attr.visitApply(Attr.java:1828)
              at com.sun.tools.javac.tree.JCTree$JCMethodInvocation.accept(JCTree.java:1459)
              at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:596)
              at com.sun.tools.javac.comp.Attr.visitReturn(Attr.java:1689)
              at com.sun.tools.javac.tree.JCTree$JCReturn.accept(JCTree.java:1378)
              at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:596)
              at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:665)
              at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:681)
              at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1127)
              at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:903)
              at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:596)
              at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:665)
              at com.sun.tools.javac.comp.Attr.visitTry(Attr.java:1357)
              at com.sun.tools.javac.tree.JCTree$JCTry.accept(JCTree.java:1167)
              at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:596)
              at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:665)
              at com.sun.tools.javac.comp.Attr.attribStats(Attr.java:681)
              at com.sun.tools.javac.comp.Attr.visitBlock(Attr.java:1127)
              at com.sun.tools.javac.tree.JCTree$JCBlock.accept(JCTree.java:903)
              at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:596)
              at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:665)
              at com.sun.tools.javac.comp.Attr.visitMethodDef(Attr.java:1020)
              at com.sun.tools.javac.tree.JCTree$JCMethodDecl.accept(JCTree.java:772)
              at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:596)
              at com.sun.tools.javac.comp.Attr.attribStat(Attr.java:665)
              at com.sun.tools.javac.comp.Attr.attribClassBody(Attr.java:4305)
              at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4215)
              at com.sun.tools.javac.comp.Attr.attribClass(Attr.java:4149)
              at com.sun.tools.javac.comp.Attr.attrib(Attr.java:4124)
              at com.sun.tools.javac.main.JavaCompiler.attribute(JavaCompiler.java:1251)
              at com.sun.tools.javac.main.JavaCompiler.compile2(JavaCompiler.java:904)
              at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:863)
              at com.sun.tools.javac.main.Main.compile(Main.java:523)
              at com.sun.tools.javac.api.JavacTaskImpl.doCall(JavacTaskImpl.java:129)
              at com.sun.tools.javac.api.JavacTaskImpl.call(JavacTaskImpl.java:138)
              at org.codehaus.plexus.compiler.javac.JavaxToolsCompiler.compileInProcess(JavaxToolsCompiler.java:126)
              at org.codehaus.plexus.compiler.javac.JavacCompiler.performCompile(JavacCompiler.java:169)
              at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:785)
              at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:129)
              at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:132)
              at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
              at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
              at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
              at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
              at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
              at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
              at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:120)
              at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:347)
              at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:154)
              at org.apache.maven.cli.MavenCli.execute(MavenCli.java:582)
              at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
              at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
              at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
              at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
              at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
              at java.lang.reflect.Method.invoke(Method.java:483)
              at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
              at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
              at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
              at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
      [INFO] -------------------------------------------------------------
      [ERROR] COMPILATION ERROR :
      [INFO] -------------------------------------------------------------

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      @Before
      public void setUp()
      {
      log.debug("In setUp() method...");

      url = UriComponentsBuilder.newInstance()
      .scheme("http")
      .host(host)
      .port(port)
      .path(path)
      .build(false)
      .toString();

      url = Pattern.compile("\\{id\\}").matcher(url).replaceAll(ID.toString());

      server = MockRestServiceServer.createServer(restTemplate);

      stepExecution.setExecutionContext(new ExecutionContext());
      stepExecution.getExecutionContext().put(SpringConfiguration.PACKAGE_ID_KEY, ID);

          }

      @Test
      public void test() throws Exception
      {
      log.debug("In test() method...");

      server.expect(requestTo(url))
      .andExpect(method(HttpMethod.GET))
      .andRespond(withSuccess("{\"totalCount\":3,\"failedCount\":0,\"completionCount\":0,\"processingCount\":2}", MediaType.APPLICATION_JSON));

      getIrebalStatusTasklet.beforeStep(stepExecution);
      getIrebalStatusTasklet.execute(null, null);

      server.verify();


      }
      ---------- END SOURCE ----------

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              fmatte Fairoz Matte
              webbuggrp Webbug Group
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              Dates

                Created:
                Updated:
                Resolved: