org.apache.flink.streaming.connectors.kafka

Class KafkaTableSource

java.lang.Object

org.apache.flink.streaming.connectors.kafka.KafkaTableSourceBase

org.apache.flink.streaming.connectors.kafka.KafkaTableSource

All Implemented Interfaces:

org.apache.flink.table.sources.DefinedFieldMapping, org.apache.flink.table.sources.DefinedProctimeAttribute, org.apache.flink.table.sources.DefinedRowtimeAttributes, org.apache.flink.table.sources.StreamTableSource<org.apache.flink.types.Row>, org.apache.flink.table.sources.TableSource<org.apache.flink.types.Row>

@Internal
public class KafkaTableSource
extends org.apache.flink.streaming.connectors.kafka.KafkaTableSourceBase

Kafka StreamTableSource.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.flink.streaming.connectors.kafka.KafkaTableSourceBase

org.apache.flink.streaming.connectors.kafka.KafkaTableSourceBase.Builder<T extends org.apache.flink.streaming.connectors.kafka.KafkaTableSourceBase,B extends org.apache.flink.streaming.connectors.kafka.KafkaTableSourceBase.Builder>

Constructor Summary

Constructors

Constructor and Description
KafkaTableSource(org.apache.flink.table.api.TableSchema schema, Optional<String> proctimeAttribute, List<org.apache.flink.table.sources.RowtimeAttributeDescriptor> rowtimeAttributeDescriptors, Optional<Map<String,String>> fieldMapping, String topic, Properties properties, org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.types.Row> deserializationSchema, org.apache.flink.streaming.connectors.kafka.config.StartupMode startupMode, Map<org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartition,Long> specificStartupOffsets) Creates a generic Kafka StreamTableSource.
KafkaTableSource(org.apache.flink.table.api.TableSchema schema, String topic, Properties properties, org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.types.Row> deserializationSchema) Creates a generic Kafka StreamTableSource.

Method Summary

Modifier and Type	Method and Description
protected org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase<org.apache.flink.types.Row>	createKafkaConsumer(String topic, Properties properties, org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.types.Row> deserializationSchema)

Methods inherited from class org.apache.flink.streaming.connectors.kafka.KafkaTableSourceBase

equals, explainSource, getDataStream, getDeserializationSchema, getFieldMapping, getKafkaConsumer, getProctimeAttribute, getProperties, getReturnType, getRowtimeAttributeDescriptors, getTableSchema, hashCode, setFieldMapping, setProctimeAttribute, setRowtimeAttributeDescriptors, setSpecificStartupOffsets, setStartupMode

Methods inherited from class java.lang.Object

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

Constructor Detail

KafkaTableSource

public KafkaTableSource(org.apache.flink.table.api.TableSchema schema,
                        Optional<String> proctimeAttribute,
                        List<org.apache.flink.table.sources.RowtimeAttributeDescriptor> rowtimeAttributeDescriptors,
                        Optional<Map<String,String>> fieldMapping,
                        String topic,
                        Properties properties,
                        org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.types.Row> deserializationSchema,
                        org.apache.flink.streaming.connectors.kafka.config.StartupMode startupMode,
                        Map<org.apache.flink.streaming.connectors.kafka.internals.KafkaTopicPartition,Long> specificStartupOffsets)

Creates a generic Kafka StreamTableSource.

Parameters:

schema - Schema of the produced table.

proctimeAttribute - Field name of the processing time attribute.

rowtimeAttributeDescriptors - Descriptor for a rowtime attribute

fieldMapping - Mapping for the fields of the table schema to fields of the physical returned type.

topic - Kafka topic to consume.

properties - Properties for the Kafka consumer.

deserializationSchema - Deserialization schema for decoding records from Kafka.

startupMode - Startup mode for the contained consumer.

specificStartupOffsets - Specific startup offsets; only relevant when startup mode is StartupMode.SPECIFIC_OFFSETS.

KafkaTableSource

public KafkaTableSource(org.apache.flink.table.api.TableSchema schema,
                        String topic,
                        Properties properties,
                        org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.types.Row> deserializationSchema)

Creates a generic Kafka StreamTableSource.

Parameters:

schema - Schema of the produced table.

topic - Kafka topic to consume.

properties - Properties for the Kafka consumer.

deserializationSchema - Deserialization schema for decoding records from Kafka.

Method Detail

createKafkaConsumer

protected org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase<org.apache.flink.types.Row> createKafkaConsumer(String topic,
                                                                                                                             Properties properties,
                                                                                                                             org.apache.flink.api.common.serialization.DeserializationSchema<org.apache.flink.types.Row> deserializationSchema)

Specified by:

createKafkaConsumer in class org.apache.flink.streaming.connectors.kafka.KafkaTableSourceBase