Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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1.1.3
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None
Description
When using Scala class with with property (both var and val) annotated as BeanProperty, throws an exception java.lang.IllegalStateException: Detected more than one getter.
The simple code which follows throws that exception:
class SomeClass(@BeanProperty var prop: Int) object SampleBeanProperty { def main(args: Array[String]): Unit = { val env = StreamExecutionEnvironment.createLocalEnvironment() // Create a DataSet from a list of elements env.fromElements(1,2) .map(new SomeClass(_)) .print env.execute() } }
Full exception:
Exception in thread "main" java.lang.IllegalStateException: Detected more than one setter
at org.apache.flink.api.java.typeutils.TypeExtractor.isValidPojoField(TypeExtractor.java:1646)
at org.apache.flink.api.java.typeutils.TypeExtractor.analyzePojo(TypeExtractor.java:1692)
at org.apache.flink.api.java.typeutils.TypeExtractor.privateGetForClass(TypeExtractor.java:1580)
at org.apache.flink.api.java.typeutils.TypeExtractor.privateGetForClass(TypeExtractor.java:1479)
at org.apache.flink.api.java.typeutils.TypeExtractor.createTypeInfoWithTypeHierarchy(TypeExtractor.java:737)
at org.apache.flink.api.java.typeutils.TypeExtractor.privateCreateTypeInfo(TypeExtractor.java:543)
at org.apache.flink.api.java.typeutils.TypeExtractor.createTypeInfo(TypeExtractor.java:497)
at org.apache.flink.api.java.typeutils.TypeExtractor.createTypeInfo(TypeExtractor.java:493)
at SampleBeanProperty$.main(SampleBeanProperty.scala:18)
at SampleBeanProperty.main(SampleBeanProperty.scala)
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 com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)
If the class is changed into case class, code with BeanProperty works fine.
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