org.apache.flink.api.java.io

Class CollectionInputFormat<T>

java.lang.Object

org.apache.flink.api.common.io.RichInputFormat<OT,org.apache.flink.core.io.GenericInputSplit>

org.apache.flink.api.common.io.GenericInputFormat<T>

org.apache.flink.api.java.io.CollectionInputFormat<T>

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.io.InputFormat<T,org.apache.flink.core.io.GenericInputSplit>, org.apache.flink.api.common.io.NonParallelInput, org.apache.flink.core.io.InputSplitSource<org.apache.flink.core.io.GenericInputSplit>

@PublicEvolving
public class CollectionInputFormat<T>
extends org.apache.flink.api.common.io.GenericInputFormat<T>
implements org.apache.flink.api.common.io.NonParallelInput

An input format that returns objects from a collection.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.flink.api.common.io.GenericInputFormat

partitionNumber

Constructor Summary

Constructors

Constructor and Description
CollectionInputFormat(Collection<T> dataSet, org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer)

Method Summary

Modifier and Type	Method and Description
static <X> void	checkCollection(Collection<X> elements, Class<X> viewedAs)
T	nextRecord(T record)
void	open(org.apache.flink.core.io.GenericInputSplit split)
boolean	reachedEnd()
String	toString()

Methods inherited from class org.apache.flink.api.common.io.GenericInputFormat

close, configure, createInputSplits, getInputSplitAssigner, getStatistics

Methods inherited from class org.apache.flink.api.common.io.RichInputFormat

closeInputFormat, getRuntimeContext, openInputFormat, setRuntimeContext

Methods inherited from class java.lang.Object

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

Constructor Detail

CollectionInputFormat

public CollectionInputFormat(Collection<T> dataSet,
                             org.apache.flink.api.common.typeutils.TypeSerializer<T> serializer)

Method Detail

reachedEnd

public boolean reachedEnd()
                   throws IOException

Specified by:

reachedEnd in interface org.apache.flink.api.common.io.InputFormat<T,org.apache.flink.core.io.GenericInputSplit>

Throws:

IOException

open

public void open(org.apache.flink.core.io.GenericInputSplit split)
          throws IOException

Specified by:

open in interface org.apache.flink.api.common.io.InputFormat<T,org.apache.flink.core.io.GenericInputSplit>

Overrides:

open in class org.apache.flink.api.common.io.GenericInputFormat<T>

Throws:

IOException

nextRecord

public T nextRecord(T record)
             throws IOException

Specified by:

nextRecord in interface org.apache.flink.api.common.io.InputFormat<T,org.apache.flink.core.io.GenericInputSplit>

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

checkCollection

public static <X> void checkCollection(Collection<X> elements,
                                       Class<X> viewedAs)