Package org.apache.flink.batch.connectors.cassandra

Class CassandraTupleOutputFormat<OUT extends org.apache.flink.api.java.tuple.Tuple>

java.lang.Object

org.apache.flink.api.common.io.RichOutputFormat<OUT>

org.apache.flink.api.common.io.OutputFormatBase<OUT,V>

org.apache.flink.batch.connectors.cassandra.CassandraTupleOutputFormat<OUT>

Type Parameters:

OUT - Type of Tuple to write to Cassandra.

All Implemented Interfaces:

Serializable, org.apache.flink.api.common.io.OutputFormat<OUT>

Direct Known Subclasses:

CassandraOutputFormat

public class CassandraTupleOutputFormat<OUT extends org.apache.flink.api.java.tuple.Tuple>
extends org.apache.flink.api.common.io.OutputFormatBase<OUT,V>

OutputFormat to write Flink Tuples into a Cassandra cluster. Please read the recommendations in CassandraOutputFormatBase.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
protected com.datastax.driver.core.Session	session

Constructor Summary

Constructors

Constructor	Description
CassandraTupleOutputFormat(String insertQuery, ClusterBuilder builder)
CassandraTupleOutputFormat(String insertQuery, ClusterBuilder builder, int maxConcurrentRequests, java.time.Duration maxConcurrentRequestsTimeout)

Method Summary

Modifier and Type	Method	Description
void	configure(org.apache.flink.configuration.Configuration parameters)	Configure the connection to Cassandra.
protected Object[]	extractFields(OUT record)
protected static <T> CompletableFuture<T>	listenableFutureToCompletableFuture(com.google.common.util.concurrent.ListenableFuture<T> listenableFuture)
protected void	postClose()	Closes all resources used by Cassandra connection.
protected void	postOpen()	Opens a Session to Cassandra .
protected CompletionStage<com.datastax.driver.core.ResultSet>	send(OUT record)

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

close, open, writeRecord

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

getRuntimeContext, setRuntimeContext

Methods inherited from class java.lang.Object

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

Field Detail

session

protected transient com.datastax.driver.core.Session session

Constructor Detail

CassandraTupleOutputFormat

public CassandraTupleOutputFormat(String insertQuery,
                                  ClusterBuilder builder)

CassandraTupleOutputFormat

public CassandraTupleOutputFormat(String insertQuery,
                                  ClusterBuilder builder,
                                  int maxConcurrentRequests,
                                  java.time.Duration maxConcurrentRequestsTimeout)

Method Detail

extractFields

protected Object[] extractFields(OUT record)

postOpen

protected void postOpen()

Opens a Session to Cassandra .

send

protected CompletionStage<com.datastax.driver.core.ResultSet> send(OUT record)

Specified by:

send in class org.apache.flink.api.common.io.OutputFormatBase<OUT,com.datastax.driver.core.ResultSet>

configure

public void configure(org.apache.flink.configuration.Configuration parameters)

Configure the connection to Cassandra.

postClose

protected void postClose()

Closes all resources used by Cassandra connection.

Overrides:

postClose in class org.apache.flink.api.common.io.OutputFormatBase<OUT,V>

listenableFutureToCompletableFuture

protected static <T> CompletableFuture<T> listenableFutureToCompletableFuture(com.google.common.util.concurrent.ListenableFuture<T> listenableFuture)