[JOHNZON-144] Using a @JohnzonConverter with Jsonb leads to an Exception

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.5
• Fix Version/s: 1.1.5
• Component/s: JSON-B
• Assignee: Reinhard Sandtner
• Reporter: Mark Struberg
• Created: 06/Nov/17 16:57
• Updated: 14/Nov/17 08:23
• Resolved: 06/Nov/17 19:39

Description

Converting a class which has a @JohnzonConverter annotation via Jsonb leads to a ClassCast exception:

java.lang.ClassCastException: org.apache.johnzon.jsonb.JohnzonConverterInJsonbTest$TestInstantConverter cannot be cast to org.apache.johnzon.mapper.ObjectConverter$Writer

	at org.apache.johnzon.jsonb.JsonbAccessMode$WriterConverters.<init>(JsonbAccessMode.java:773)
	at org.apache.johnzon.jsonb.JsonbAccessMode.findReaders(JsonbAccessMode.java:405)
	at org.apache.johnzon.mapper.Mappings.createClassMapping(Mappings.java:365)
	at org.apache.johnzon.mapper.Mappings.findOrCreateClassMapping(Mappings.java:338)
	at org.apache.johnzon.mapper.Mapper.isDeduplicateObjects(Mapper.java:138)
	at org.apache.johnzon.mapper.Mapper.writeObject(Mapper.java:132)
	at org.apache.johnzon.mapper.Mapper.writeObjectAsString(Mapper.java:193)
	at org.apache.johnzon.jsonb.JohnzonJsonb.toJson(JohnzonJsonb.java:216)
	at org.apache.johnzon.jsonb.JohnzonConverterInJsonbTest.testJohnzonConverter(JohnzonConverterInJsonbTest.java:43)
	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:498)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

In older Johnzon version the Converter simply got ignored.
We now try to pick up the Converter but seem to mess up this part due to our work on JOHNZON-77.