Package org.apache.beam.runners.dataflow.internal

Class IsmFormat.IsmRecord<V>

java.lang.Object

org.apache.beam.runners.dataflow.internal.IsmFormat.IsmRecord<V>

Enclosing class:

IsmFormat

public abstract static class IsmFormat.IsmRecord<V>
extends Object

A record containing a composite key and either a value or metadata. The composite key must not contain the metadata key component place holder if producing a value record, and must contain the metadata component key place holder if producing a metadata record.

The composite key is a fixed number of component keys where the first N component keys are used to create a shard id via hashing. See IsmFormat.IsmRecordCoder.hash(List) for further details.

Method Summary

Modifier and Type	Method	Description
Object	getKeyComponent(int index)	Returns the key component at the specified index.
List<?>	getKeyComponents()	Returns the list of key components.
byte[]	getMetadata()	Returns the metadata.
V	getValue()	Returns the value.
static <V> IsmFormat.IsmRecord<V>	meta(List<?> keyComponents, byte[] metadata)
static <V> IsmFormat.IsmRecord<V>	of(List<?> keyComponents, V value)	Returns an IsmRecord with the specified key components and value.

Methods inherited from class java.lang.Object

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

Method Details

of

public static <V> IsmFormat.IsmRecord<V> of(List<?> keyComponents,
 V value)

Returns an IsmRecord with the specified key components and value.

meta

public static <V> IsmFormat.IsmRecord<V> meta(List<?> keyComponents,
 byte[] metadata)

getKeyComponents

public List<?> getKeyComponents()

Returns the list of key components.

getKeyComponent

public Object getKeyComponent(int index)

Returns the key component at the specified index.

getValue

public V getValue()

Returns the value. Throws IllegalStateException if this is not a value record.

getMetadata

public byte[] getMetadata()

Returns the metadata. Throws IllegalStateException if this is not a metadata record.