custom JsonSerializer (using @JsonSerialize annotation) causing NullPointerException

[jwijgerd]

When a property is annotated with @JsonSerialize the OptimizedBeanPropertyWriter does not copy the serializer from the BeanPropertyWriter. This caused both _serializer and _dynamicSerializers fields to be null, leading to the following stacktrace:

com.fasterxml.jackson.databind.JsonMappingException: (was java.lang.NullPointerException) (through reference chain: org.elasticsoftware.elasticactors.base.serialization.TestObjectWIthJsonSerialize["amount"])
at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:210)
at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:177)
at com.fasterxml.jackson.databind.ser.std.StdSerializer.wrapAndThrow(StdSerializer.java:187)
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:647)
at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:152)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:128)
at com.fasterxml.jackson.databind.ObjectMapper._configAndWriteValue(ObjectMapper.java:2881)
at com.fasterxml.jackson.databind.ObjectMapper.writeValueAsString(ObjectMapper.java:2338)
at org.elasticsoftware.elasticactors.base.serialization.ObjectMapperBuilderTest.testAfterburnerModule(ObjectMapperBuilderTest.java:49)
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:606)
at org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:609)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:532)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:686)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1018)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:128)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112)
at org.testng.TestRunner.runWorkers(TestRunner.java:759)
at org.testng.TestRunner.privateRun(TestRunner.java:592)
at org.testng.TestRunner.run(TestRunner.java:486)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:332)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:327)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:299)
at org.testng.SuiteRunner.run(SuiteRunner.java:204)
at org.testng.TestNG.createAndRunSuiteRunners(TestNG.java:912)
at org.testng.TestNG.runSuitesLocally(TestNG.java:876)
at org.testng.TestNG.run(TestNG.java:784)
at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:73)
at org.testng.RemoteTestNGStarter.main(RemoteTestNGStarter.java:120)
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:606)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Caused by: java.lang.NullPointerException
at com.fasterxml.jackson.module.afterburner.ser.ObjectMethodPropertyWriter.serializeAsField(ObjectMethodPropertyWriter.java:58)
at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:639)
... 32 more

I have a fix for this and will issue a pull request

Kind regards,

Joost