org.apache.flink.streaming.api.functions.source.datagen

类 RandomGenerator<T>

java.lang.Object

org.apache.flink.streaming.api.functions.source.datagen.RandomGenerator<T>

所有已实现的接口:

Serializable, Iterator<T>, DataGenerator<T>

@Experimental
public abstract class RandomGenerator<T>
extends Object
implements DataGenerator<T>

Random generator.

另请参阅:

序列化表格

字段概要

字段

限定符和类型	字段和说明
protected org.apache.commons.math3.random.RandomDataGenerator	random

构造器概要

构造器

构造器和说明
RandomGenerator()

方法概要

限定符和类型	方法和说明
static RandomGenerator<Boolean>	booleanGenerator()
static RandomGenerator<Byte>	byteGenerator(byte min, byte max)
static RandomGenerator<Double>	doubleGenerator(double min, double max)
static RandomGenerator<Float>	floatGenerator(float min, float max)
boolean	hasNext()
static RandomGenerator<Integer>	intGenerator(int min, int max)
static RandomGenerator<Long>	longGenerator(long min, long max)
void	open(String name, org.apache.flink.runtime.state.FunctionInitializationContext context, org.apache.flink.api.common.functions.RuntimeContext runtimeContext) Open and initialize state for DataGenerator.
static RandomGenerator<Short>	shortGenerator(short min, short max)
static RandomGenerator<String>	stringGenerator(int len)

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.streaming.api.functions.source.datagen.DataGenerator

snapshotState

从接口继承的方法 java.util.Iterator

forEachRemaining, next, remove

字段详细资料

random

protected transient org.apache.commons.math3.random.RandomDataGenerator random

构造器详细资料

RandomGenerator

public RandomGenerator()

方法详细资料

open

public void open(String name,
                 org.apache.flink.runtime.state.FunctionInitializationContext context,
                 org.apache.flink.api.common.functions.RuntimeContext runtimeContext)
          throws Exception

从接口复制的说明: DataGenerator

Open and initialize state for DataGenerator. See CheckpointedFunction.initializeState(org.apache.flink.runtime.state.FunctionInitializationContext).

指定者:

open 在接口中 DataGenerator<T>

参数:

name - The state of DataGenerator should related to this name, make sure the name of state is different.

抛出:

Exception

hasNext

public boolean hasNext()

指定者:

hasNext 在接口中 Iterator<T>

longGenerator

public static RandomGenerator<Long> longGenerator(long min,
                                                  long max)

intGenerator

public static RandomGenerator<Integer> intGenerator(int min,
                                                    int max)

shortGenerator

public static RandomGenerator<Short> shortGenerator(short min,
                                                    short max)

byteGenerator

public static RandomGenerator<Byte> byteGenerator(byte min,
                                                  byte max)

floatGenerator

public static RandomGenerator<Float> floatGenerator(float min,
                                                    float max)

doubleGenerator

public static RandomGenerator<Double> doubleGenerator(double min,
                                                      double max)

stringGenerator

public static RandomGenerator<String> stringGenerator(int len)

booleanGenerator

public static RandomGenerator<Boolean> booleanGenerator()