org.apache.flink.walkthrough.common.source

Class TransactionRowInputFormat

java.lang.Object

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

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

org.apache.flink.walkthrough.common.source.TransactionRowInputFormat

All Implemented Interfaces:

Serializable, InputFormat<Row,GenericInputSplit>, NonParallelInput, InputSplitSource<GenericInputSplit>

@Internal
public class TransactionRowInputFormat
extends GenericInputFormat<Row>
implements NonParallelInput

An bounded input of transactions.

See Also:

Serialized Form

Field Summary

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

partitionNumber

Constructor Summary

Constructors

Constructor and Description
TransactionRowInputFormat()

Method Summary

Modifier and Type	Method and Description
Row	nextRecord(Row reuse) Reads the next record from the input.
void	open(GenericInputSplit split) Opens a parallel instance of the input format to work on a split.
boolean	reachedEnd() Method used to check if the end of the input is reached.

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, toString, wait, wait, wait

Constructor Detail

TransactionRowInputFormat

public TransactionRowInputFormat()

Method Detail

open

public void open(GenericInputSplit split)

Description copied from interface: InputFormat

Opens a parallel instance of the input format to work on a split.

When this method is called, the input format it guaranteed to be configured.

Specified by:

open in interface InputFormat<Row,GenericInputSplit>

Overrides:

open in class GenericInputFormat<Row>

Parameters:

split - The split to be opened.

reachedEnd

public boolean reachedEnd()

Description copied from interface: InputFormat

Method used to check if the end of the input is reached.

When this method is called, the input format it guaranteed to be opened.

Specified by:

reachedEnd in interface InputFormat<Row,GenericInputSplit>

Returns:

True if the end is reached, otherwise false.

nextRecord

public Row nextRecord(Row reuse)

Description copied from interface: InputFormat

Reads the next record from the input.

When this method is called, the input format it guaranteed to be opened.

Specified by:

nextRecord in interface InputFormat<Row,GenericInputSplit>

Parameters:

reuse - Object that may be reused.

Returns:

Read record.