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

Class CassandraPojoOutputFormat<OUT>

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.CassandraPojoOutputFormat<OUT>

Type Parameters:

OUT - type of outputClass

All Implemented Interfaces:

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

public class CassandraPojoOutputFormat<OUT>
extends org.apache.flink.api.common.io.OutputFormatBase<OUT,V>

OutputFormat to write data to Apache Cassandra and from a custom Cassandra annotated object. 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
CassandraPojoOutputFormat(ClusterBuilder builder, Class<OUT> outputClass)
CassandraPojoOutputFormat(ClusterBuilder builder, Class<OUT> outputClass, MapperOptions mapperOptions)
CassandraPojoOutputFormat(ClusterBuilder builder, Class<OUT> outputClass, MapperOptions mapperOptions, 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 static <T> CompletableFuture<T>	listenableFutureToCompletableFuture(com.google.common.util.concurrent.ListenableFuture<T> listenableFuture)
protected void	postClose()	Closes all resources used.
protected void	postOpen()	Opens a Session to Cassandra and initializes the prepared statement.
protected CompletionStage<Void>	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

CassandraPojoOutputFormat

public CassandraPojoOutputFormat(ClusterBuilder builder,
                                 Class<OUT> outputClass)

CassandraPojoOutputFormat

public CassandraPojoOutputFormat(ClusterBuilder builder,
                                 Class<OUT> outputClass,
                                 MapperOptions mapperOptions)

CassandraPojoOutputFormat

public CassandraPojoOutputFormat(ClusterBuilder builder,
                                 Class<OUT> outputClass,
                                 MapperOptions mapperOptions,
                                 int maxConcurrentRequests,
                                 java.time.Duration maxConcurrentRequestsTimeout)

Method Detail

postOpen

protected void postOpen()

Opens a Session to Cassandra and initializes the prepared statement.

send

protected CompletionStage<Void> send(OUT record)

Specified by:

send in class org.apache.flink.api.common.io.OutputFormatBase<OUT,Void>

postClose

protected void postClose()

Closes all resources used.

configure

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

Configure the connection to Cassandra.

listenableFutureToCompletableFuture

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