org.apache.flink.table.operations

Class JavaDataStreamQueryOperation<E>

java.lang.Object

org.apache.flink.table.operations.JavaDataStreamQueryOperation<E>

All Implemented Interfaces:

org.apache.flink.table.operations.Operation, org.apache.flink.table.operations.QueryOperation

@Internal
public class JavaDataStreamQueryOperation<E>
extends Object
implements org.apache.flink.table.operations.QueryOperation

Describes a relational operation that reads from a DataStream.

This operation may expose only part, or change the order of the fields available in a CompositeType of the underlying DataStream. The getFieldIndices() describes the mapping between fields of the TableSchema to the CompositeType.

Constructor Summary

Constructors

Constructor and Description
JavaDataStreamQueryOperation(org.apache.flink.streaming.api.datastream.DataStream<E> dataStream, int[] fieldIndices, org.apache.flink.table.api.TableSchema tableSchema)
JavaDataStreamQueryOperation(org.apache.flink.table.catalog.ObjectIdentifier identifier, org.apache.flink.streaming.api.datastream.DataStream<E> dataStream, int[] fieldIndices, org.apache.flink.table.api.TableSchema tableSchema)

Method Summary

Modifier and Type	Method and Description
<T> T	accept(org.apache.flink.table.operations.QueryOperationVisitor<T> visitor)
String	asSummaryString()
List<org.apache.flink.table.operations.QueryOperation>	getChildren()
org.apache.flink.streaming.api.datastream.DataStream<E>	getDataStream()
int[]	getFieldIndices()
Optional<org.apache.flink.table.catalog.ObjectIdentifier>	getIdentifier()
org.apache.flink.table.api.TableSchema	getTableSchema()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.operations.QueryOperation

asSerializableString

Constructor Detail

JavaDataStreamQueryOperation

public JavaDataStreamQueryOperation(org.apache.flink.streaming.api.datastream.DataStream<E> dataStream,
                                    int[] fieldIndices,
                                    org.apache.flink.table.api.TableSchema tableSchema)

JavaDataStreamQueryOperation

public JavaDataStreamQueryOperation(org.apache.flink.table.catalog.ObjectIdentifier identifier,
                                    org.apache.flink.streaming.api.datastream.DataStream<E> dataStream,
                                    int[] fieldIndices,
                                    org.apache.flink.table.api.TableSchema tableSchema)

Method Detail

getDataStream

public org.apache.flink.streaming.api.datastream.DataStream<E> getDataStream()

getIdentifier

public Optional<org.apache.flink.table.catalog.ObjectIdentifier> getIdentifier()

getFieldIndices

public int[] getFieldIndices()

getTableSchema

public org.apache.flink.table.api.TableSchema getTableSchema()

Specified by:

getTableSchema in interface org.apache.flink.table.operations.QueryOperation

asSummaryString

public String asSummaryString()

Specified by:

asSummaryString in interface org.apache.flink.table.operations.Operation

getChildren

public List<org.apache.flink.table.operations.QueryOperation> getChildren()

Specified by:

getChildren in interface org.apache.flink.table.operations.QueryOperation

accept

public <T> T accept(org.apache.flink.table.operations.QueryOperationVisitor<T> visitor)

Specified by:

accept in interface org.apache.flink.table.operations.QueryOperation