net.e6tech.elements.cassandra.etl

Class Transformer<T,E>

java.lang.Object

net.e6tech.elements.cassandra.etl.Transformer<T,E>

Type Parameters:

T - Transformed type

E - Extracted type

public class Transformer<T,E>
extends java.lang.Object

This is a convenient class for helping to transform an array of extracted entities of type E to another set of entities of type T. NOTE, the entities to be transformed need to be in ascending order.

Constructor Summary

Constructors

Constructor and Description
Transformer(net.e6tech.elements.common.resources.Resources resources, java.lang.Class<T> cls)

Method Summary

Modifier and Type	Method and Description
Transformer<T,E>	addPrimaryKey(PrimaryKey key, E e)
Transformer<T,E>	forEachCreateIfNotExist(java.util.function.BiConsumer<E,T> consumer)
Transformer<T,E>	forEachNewOrExisting(java.util.function.BiConsumer<E,T> newItems, java.util.function.BiConsumer<E,T> existing)
Consistency	getReadConsistency()
long	getTimeout()
Consistency	getWriteConsistency()
java.util.Set<PrimaryKey>	keySet()
Transformer<T,E>	save()
Transformer<T,E>	save(WriteOptions userOptions)
void	setReadConsistency(Consistency readConsistency)
void	setTimeout(long timeout)
void	setWriteConsistency(Consistency writeConsistency)
int	size()
Transformer<T,E>	timeout(long timeout)
Transformer<T,E>	transform(java.util.Collection<E> collection, java.util.function.BiConsumer<Transformer<T,E>,E> consumer)
Transformer<T,E>	transform(E[] array, java.util.function.BiConsumer<Transformer<T,E>,E> consumer)
Transformer<T,E>	transform(java.util.stream.Stream<E> stream, java.util.function.BiConsumer<Transformer<T,E>,E> consumer)
java.util.Collection<T>	values()

Methods inherited from class java.lang.Object

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

Constructor Detail

Transformer

public Transformer(net.e6tech.elements.common.resources.Resources resources,
                   java.lang.Class<T> cls)

Method Detail

transform

public Transformer<T,E> transform(java.util.stream.Stream<E> stream,
                                  java.util.function.BiConsumer<Transformer<T,E>,E> consumer)

transform

public Transformer<T,E> transform(E[] array,
                                  java.util.function.BiConsumer<Transformer<T,E>,E> consumer)

transform

public Transformer<T,E> transform(java.util.Collection<E> collection,
                                  java.util.function.BiConsumer<Transformer<T,E>,E> consumer)

getReadConsistency

public Consistency getReadConsistency()

setReadConsistency

public void setReadConsistency(Consistency readConsistency)

getWriteConsistency

public Consistency getWriteConsistency()

setWriteConsistency

public void setWriteConsistency(Consistency writeConsistency)

getTimeout

public long getTimeout()

setTimeout

public void setTimeout(long timeout)

timeout

public Transformer<T,E> timeout(long timeout)

addPrimaryKey

public Transformer<T,E> addPrimaryKey(PrimaryKey key,
                                      E e)

forEachCreateIfNotExist

public Transformer<T,E> forEachCreateIfNotExist(java.util.function.BiConsumer<E,T> consumer)

forEachNewOrExisting

public Transformer<T,E> forEachNewOrExisting(java.util.function.BiConsumer<E,T> newItems,
                                             java.util.function.BiConsumer<E,T> existing)

save

public Transformer<T,E> save()

save

public Transformer<T,E> save(WriteOptions userOptions)

values

public java.util.Collection<T> values()

keySet

public java.util.Set<PrimaryKey> keySet()

size

public int size()