org.apache.flink.api.java

类 ClosureCleaner

java.lang.Object

org.apache.flink.api.java.ClosureCleaner

@Internal
public class ClosureCleaner
extends Object

The closure cleaner is a utility that tries to truncate the closure (enclosing instance) of non-static inner classes (created for inline transformation functions). That makes non-static inner classes in many cases serializable, where Java's default behavior renders them non-serializable without good reason.

构造器概要

构造器

构造器和说明
ClosureCleaner()

方法概要

限定符和类型	方法和说明
static void	clean(Object func, boolean checkSerializable) Tries to clean the closure of the given object, if the object is a non-static inner class.
static void	clean(Object func, org.apache.flink.api.common.ExecutionConfig.ClosureCleanerLevel level, boolean checkSerializable) Tries to clean the closure of the given object, if the object is a non-static inner class.
static void	ensureSerializable(Object obj)

从类继承的方法 java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

构造器详细资料

ClosureCleaner

public ClosureCleaner()

方法详细资料

clean

public static void clean(Object func,
                         boolean checkSerializable)

Tries to clean the closure of the given object, if the object is a non-static inner class. This will use the default closure cleaner level of ExecutionConfig.ClosureCleanerLevel#RECURSIVE.

参数:

func - The object whose closure should be cleaned.

checkSerializable - Flag to indicate whether serializability should be checked after the closure cleaning attempt.

抛出:

org.apache.flink.api.common.InvalidProgramException - Thrown, if 'checkSerializable' is true, and the object was not serializable after the closure cleaning.

RuntimeException - A RuntimeException may be thrown, if the code of the class could not be loaded, in order to process during the closure cleaning.

clean

public static void clean(Object func,
                         org.apache.flink.api.common.ExecutionConfig.ClosureCleanerLevel level,
                         boolean checkSerializable)

Tries to clean the closure of the given object, if the object is a non-static inner class.

参数:

func - The object whose closure should be cleaned.

level - the clean up level.

checkSerializable - Flag to indicate whether serializability should be checked after the closure cleaning attempt.

抛出:

org.apache.flink.api.common.InvalidProgramException - Thrown, if 'checkSerializable' is true, and the object was not serializable after the closure cleaning.

RuntimeException - A RuntimeException may be thrown, if the code of the class could not be loaded, in order to process during the closure cleaning.

ensureSerializable

public static void ensureSerializable(Object obj)