org.apache.flink.runtime.operators.udf

类 AssignRangeIndex<IN>

java.lang.Object

org.apache.flink.api.common.functions.AbstractRichFunction

org.apache.flink.api.common.functions.RichMapPartitionFunction<IN,org.apache.flink.api.java.tuple.Tuple2<Integer,IN>>

org.apache.flink.runtime.operators.udf.AssignRangeIndex<IN>

类型参数:

IN - The original data type.

所有已实现的接口:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.common.functions.MapPartitionFunction<IN,org.apache.flink.api.java.tuple.Tuple2<Integer,IN>>, org.apache.flink.api.common.functions.RichFunction

public class AssignRangeIndex<IN>
extends org.apache.flink.api.common.functions.RichMapPartitionFunction<IN,org.apache.flink.api.java.tuple.Tuple2<Integer,IN>>

This mapPartition function require a DataSet with RangeBoundaries as broadcast input, it generate Tuple2 which includes range index and record itself as output.

另请参阅:

序列化表格

构造器概要

构造器

构造器和说明
AssignRangeIndex(org.apache.flink.api.common.typeutils.TypeComparatorFactory<IN> typeComparator)

方法概要

限定符和类型	方法和说明
void	mapPartition(Iterable<IN> values, org.apache.flink.util.Collector<org.apache.flink.api.java.tuple.Tuple2<Integer,IN>> out)

从类继承的方法 org.apache.flink.api.common.functions.AbstractRichFunction

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

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

AssignRangeIndex

public AssignRangeIndex(org.apache.flink.api.common.typeutils.TypeComparatorFactory<IN> typeComparator)

方法详细资料

mapPartition

public void mapPartition(Iterable<IN> values,
                         org.apache.flink.util.Collector<org.apache.flink.api.java.tuple.Tuple2<Integer,IN>> out)
                  throws Exception

指定者:

mapPartition 在接口中 org.apache.flink.api.common.functions.MapPartitionFunction<IN,org.apache.flink.api.java.tuple.Tuple2<Integer,IN>>

指定者:

mapPartition 在类中 org.apache.flink.api.common.functions.RichMapPartitionFunction<IN,org.apache.flink.api.java.tuple.Tuple2<Integer,IN>>

抛出:

Exception