org.apache.spark.util

Interface SparkClassUtils

public interface SparkClassUtils

Method Summary

Modifier and Type	Method and Description
<C> Class<C>	classForName(String className, boolean initialize, boolean noSparkClassLoader) Preferred alternative to Class.forName(className), as well as Class.forName(className, initialize, loader) with current thread's ContextClassLoader.
boolean	classIsLoadable(String clazz) Determines whether the provided class is loadable in the current thread.
ClassLoader	getContextOrSparkClassLoader()
ClassLoader	getSparkClassLoader()
boolean	isMemberClass(Class<?> cls) Returns true if and only if the underlying class is a member class.
java.util.Random	random()

Method Detail

random

java.util.Random random()

getSparkClassLoader

ClassLoader getSparkClassLoader()

getContextOrSparkClassLoader

ClassLoader getContextOrSparkClassLoader()

classForName

<C> Class<C> classForName(String className,
                          boolean initialize,
                          boolean noSparkClassLoader)

Preferred alternative to Class.forName(className), as well as Class.forName(className, initialize, loader) with current thread's ContextClassLoader.

Parameters:

className - (undocumented)

initialize - (undocumented)

noSparkClassLoader - (undocumented)

Returns:

(undocumented)

classIsLoadable

boolean classIsLoadable(String clazz)

Determines whether the provided class is loadable in the current thread.

isMemberClass

boolean isMemberClass(Class<?> cls)

Returns true if and only if the underlying class is a member class.

Note: jdk8u throws a "Malformed class name" error if a given class is a deeply-nested inner class (See SPARK-34607 for details). This issue has already been fixed in jdk9+, so we can remove this helper method safely if we drop the support of jdk8u.

Parameters:

cls - (undocumented)

Returns:

(undocumented)