Package org.apache.flink.streaming.util.keys

Class KeySelectorUtil.ArrayKeySelector<IN>

java.lang.Object

org.apache.flink.streaming.util.keys.KeySelectorUtil.ArrayKeySelector<IN>

Type Parameters:

IN - The type from which the key is extracted, i.e., the array type.

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.functions.Function, org.apache.flink.api.java.functions.KeySelector<IN,org.apache.flink.api.java.tuple.Tuple>, org.apache.flink.api.java.typeutils.ResultTypeQueryable<org.apache.flink.api.java.tuple.Tuple>

Enclosing class:

KeySelectorUtil

public static final class KeySelectorUtil.ArrayKeySelector<IN>
extends Object
implements org.apache.flink.api.java.functions.KeySelector<IN,org.apache.flink.api.java.tuple.Tuple>, org.apache.flink.api.java.typeutils.ResultTypeQueryable<org.apache.flink.api.java.tuple.Tuple>

A key selector for selecting individual array fields as keys and returns them as a Tuple.

See Also:

• Serialized Form

Method Summary

Modifier and Type	Method	Description
org.apache.flink.api.java.tuple.Tuple	getKey(IN value)
org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.api.java.tuple.Tuple>	getProducedType()

Methods inherited from class java.lang.Object

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

Method Details

getKey

public org.apache.flink.api.java.tuple.Tuple getKey(IN value)

Specified by:

getKey in interface org.apache.flink.api.java.functions.KeySelector<IN,org.apache.flink.api.java.tuple.Tuple>

getProducedType

public org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.api.java.tuple.Tuple> getProducedType()

Specified by:

getProducedType in interface org.apache.flink.api.java.typeutils.ResultTypeQueryable<IN>