java.lang.InstantiationError: yw

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    java.lang.InstantiationError: Node
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    Polymorphic queries using {{MongoTemplate}} don't work when the object is embedded within a document. For example, given the objects: {code:java} @Document public class Person { @Id private String name; private List<Pet> pets; public Person(String name, List<Pet> pets) { this.name = name; this.pets = pets; } ... } {code} {code:java} @Document public abstract class Pet { @Id private String name; public Pet(String name) { this.name = name; } ... } {code} {code:java} public class Cat extends Pet { public Cat(String name) { super(name); } } {code} {code:java} public class Dog extends Pet { public Dog(String name) { super(name); } } {code} {code:java} ... // Fails mongoOps.insert(new Person("John", johnsPets)); mongoOps.insert(new Person("Jane", janesPets)); pets = mongoOps.findAll(Pet.class, "person"); // Works mongoOps.insert(johnsPets, Pet.class); mongoOps.insert(janesPets, Pet.class); mongoOps.findAll(Pet.class, "pet"); ... {code} 1.6.2 stack trace (more user-friendly): {noformat} org.springframework.data.mapping.model.MappingInstantiationException: Failed to instantiate com.mongotest.Pet using constructor public com.mongotest.Pet(java.lang.String) with arguments John at org.springframework.data.convert.ReflectionEntityInstantiator.createInstance(ReflectionEntityInstantiator.java:78) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:249) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:230) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:190) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:186) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:77) at org.springframework.data.mongodb.core.MongoTemplate$ReadDbObjectCallback.doWith(MongoTemplate.java:2128) at org.springframework.data.mongodb.core.MongoTemplate.executeFindMultiInternal(MongoTemplate.java:1811) at org.springframework.data.mongodb.core.MongoTemplate.findAll(MongoTemplate.java:1216) at com.mongotest.PersonTest.testEmbedded(PersonTest.java:54) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:45) at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123) at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164) at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110) at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:175) at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:107) at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:68) Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.mongotest.Pet]: Is it an abstract class?; nested exception is java.lang.InstantiationException at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:150) at org.springframework.data.convert.ReflectionEntityInstantiator.createInstance(ReflectionEntityInstantiator.java:76) ... 38 more Caused by: java.lang.InstantiationException at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:30) at java.lang.reflect.Constructor.newInstance(Constructor.java:513) at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:147) ... 39 more {noformat} 1.7.0 stack trace: {noformat} java.lang.InstantiationError: com.mongotest.Pet at com.mongotest.Pet_Instantiator_w9ppkk.newInstance(Unknown Source) at org.springframework.data.convert.BytecodeGeneratingEntityInstantiator$EntityInstantiatorAdapter.createInstance(BytecodeGeneratingEntityInstantiator.java:193) at org.springframework.data.convert.BytecodeGeneratingEntityInstantiator.createInstance(BytecodeGeneratingEntityInstantiator.java:76) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:250) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:231) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:191) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:187) at org.springframework.data.mongodb.core.convert.MappingMongoConverter.read(MappingMongoConverter.java:78) at org.springframework.data.mongodb.core.MongoTemplate$ReadDbObjectCallback.doWith(MongoTemplate.java:2191) at org.springframework.data.mongodb.core.MongoTemplate.executeFindMultiInternal(MongoTemplate.java:1873) at org.springframework.data.mongodb.core.MongoTemplate.findAll(MongoTemplate.java:1291) at com.mongotest.PersonTest.testEmbedded(PersonTest.java:56) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17) at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229) at org.junit.runners.ParentRunner.run(ParentRunner.java:309) at org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:45) at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:123) at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:104) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:164) at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:110) at org.apache.maven.surefire.booter.SurefireStarter.invokeProvider(SurefireStarter.java:175) at org.apache.maven.surefire.booter.SurefireStarter.runSuitesInProcessWhenForked(SurefireStarter.java:107) at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:68) {noformat}

    Spring JIRA | 2 years ago | Michael Angstadt
    java.lang.InstantiationError: com.mongotest.Pet
  5. 0

    Serializing with twitter chill

    Google Groups | 3 years ago | omid
    java.lang.InstantiationError: scala.runtime.Nothing$

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    Root Cause Analysis

    1. java.lang.InstantiationError

      yw

      at zb.<init>()
    2. Unknown
      axx.b
      1. zb.<init>(SourceFile:71)
      2. zd.<init>(SourceFile:13)
      3. yx.b(SourceFile:12)
      4. abd.a(SourceFile:25)
      5. xk.a(SourceFile:29)
      6. xm.d(SourceFile:220)
      7. gp.c(SourceFile:70)
      8. go.<init>(SourceFile:26)
      9. gn.a(SourceFile:171)
      10. gn.a(SourceFile:202)
      11. et.a(SourceFile:103)
      12. et.c(SourceFile:138)
      13. et.a(SourceFile:80)
      14. axx.b(SourceFile:72)
      14 frames
    3. MC Server
      MinecraftServer.p
      1. net.minecraft.server.MinecraftServer.q(SourceFile:452)
      2. net.minecraft.server.MinecraftServer.p(SourceFile:383)
      2 frames
    4. Unknown
      axu.p
      1. axu.p(SourceFile:111)
      1 frame
    5. MC Server
      MinecraftServer.run
      1. net.minecraft.server.MinecraftServer.run(SourceFile:316)
      1 frame
    6. Unknown
      ep.run
      1. ep.run(SourceFile:539)
      1 frame