pan3793 commented on code in PR #4879:
URL: https://github.com/apache/kyuubi/pull/4879#discussion_r1218818529
##########
kyuubi-util-scala/src/main/scala/org/apache/kyuubi/util/reflect/ReflectUtils.scala:
##########
@@ -37,32 +37,57 @@ object ReflectUtils {
DynClasses.builder().loader(cl).impl(className).buildChecked()
}.isSuccess
- def getFieldVal[T](target: Any, fieldName: String): T =
- Try {
- DynFields.builder().hiddenImpl(target.getClass,
fieldName).build[T]().get(target)
- } match {
- case Success(value) => value
- case Failure(e) =>
- val candidates =
target.getClass.getDeclaredFields.map(_.getName).mkString("[", ",", "]")
- throw new RuntimeException(s"$fieldName not in ${target.getClass}
$candidates", e)
- }
-
- def getFieldValOpt[T](target: Any, name: String): Option[T] =
- Try(getFieldVal[T](target, name)).toOption
-
- def invoke(target: AnyRef, methodName: String, args: (Class[_], AnyRef)*):
AnyRef =
+ /**
+ * get the field value of the given object
+ * @param target the target object
+ * @param fieldName the field name from declared field names
+ * @tparam T the expected return class type
+ * @return
+ */
+ def getField[T](target: Any, fieldName: String): T = {
+ val targetClass = target.getClass
try {
- val (types, values) = args.unzip
- DynMethods.builder(methodName).hiddenImpl(target.getClass, types:
_*).build()
- .invoke(target, values: _*)
+ DynFields.builder()
+ .hiddenImpl(targetClass, fieldName)
+ .buildChecked[T](target)
+ .get()
} catch {
- case e: NoSuchMethodException =>
- val candidates =
target.getClass.getMethods.map(_.getName).mkString("[", ",", "]")
- throw new RuntimeException(s"$methodName not in ${target.getClass}
$candidates", e)
+ case e: Exception =>
+ val candidates = targetClass.getDeclaredFields.map(_.getName).sorted
+ throw new RuntimeException(
+ s"Field $fieldName not in $targetClass
[${candidates.mkString(",")}]",
+ e)
}
+ }
- def invokeAs[T](target: AnyRef, methodName: String, args: (Class[_],
AnyRef)*): T =
- invoke(target, methodName, args: _*).asInstanceOf[T]
+ /**
+ * Invoke a method with the given name and arguments on the given target
object.
+ * @param target the target object
+ * @param methodName the method name
+ * @param args pairs of class and values for the arguments
+ * @tparam T the expected return class type,
+ * returning type Nothing if it's not provided or inferable
+ * @return
+ */
+ def invokeAs[T](target: AnyRef, methodName: String, args: (Class[_],
AnyRef)*): T = {
+ val targetClass = target.getClass
+ val argClasses = args.map(_._1)
+ Try {
Review Comment:
ditto, `try ... catch`
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