LuciferYang edited a comment on pull request #32536:
URL: https://github.com/apache/spark/pull/32536#issuecomment-842979946
@maropu for the above problem, can we add a case similar to the following to
compare the result of `reflection api and using ClassBodyEvaluator.getBytecodes
api` directly ?
```
val codeBody = s"""
public java.lang.Object generate(Object[] references) {
return new TestMetricCode(references);
}
class TestMetricCode {
public TestMetricCode(Object[] references) {
}
public long sumOfSquares(long left, long right) {
return left * left + right * right;
}
}
"""
// createClassBodyEvaluator is a new method to extract from
CodeGenerator#doCompile
val evaluator = CodeGenerator.createClassBodyEvaluator()
evaluator.cook("generated.java", codeBody)
import scala.collection.JavaConverters._
val bytecodesFromApi = evaluator.getBytecodes.asScala
val bytecodesFromReflectionApi = {
val scField = classOf[ClassBodyEvaluator].getDeclaredField("sc")
scField.setAccessible(true)
val compiler = scField.get(evaluator).asInstanceOf[SimpleCompiler]
val loader = compiler.getClassLoader.asInstanceOf[ByteArrayClassLoader]
val classesField = loader.getClass.getDeclaredField("classes")
classesField.setAccessible(true)
classesField.get(loader).asInstanceOf[java.util.Map[String,
Array[Byte]]].asScala
}
assert(bytecodesFromApi == bytecodesFromReflectionApi)
```
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