org.apache.flink.table.operations

类 ScalaDataStreamQueryOperation<E>

java.lang.Object

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

所有已实现的接口:

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

@Internal
public class ScalaDataStreamQueryOperation<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 org.apache.flink.api.common.typeutils.CompositeType of the underlying DataStream. The getFieldIndices() describes the mapping between fields of the TableSchema to the org.apache.flink.api.common.typeutils.CompositeType.

构造器概要

构造器

构造器和说明
ScalaDataStreamQueryOperation(org.apache.flink.streaming.api.datastream.DataStream<E> dataStream, int[] fieldIndices, org.apache.flink.table.catalog.ResolvedSchema resolvedSchema)
ScalaDataStreamQueryOperation(org.apache.flink.table.catalog.ObjectIdentifier identifier, org.apache.flink.streaming.api.datastream.DataStream<E> dataStream, int[] fieldIndices, org.apache.flink.table.catalog.ResolvedSchema resolvedSchema)

方法概要

限定符和类型	方法和说明
<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.catalog.ResolvedSchema	getResolvedSchema()

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.table.operations.QueryOperation

asSerializableString

构造器详细资料

ScalaDataStreamQueryOperation

public ScalaDataStreamQueryOperation(org.apache.flink.streaming.api.datastream.DataStream<E> dataStream,
                                     int[] fieldIndices,
                                     org.apache.flink.table.catalog.ResolvedSchema resolvedSchema)

ScalaDataStreamQueryOperation

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

方法详细资料

getDataStream

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

getFieldIndices

public int[] getFieldIndices()

getResolvedSchema

public org.apache.flink.table.catalog.ResolvedSchema getResolvedSchema()

指定者:

getResolvedSchema 在接口中 org.apache.flink.table.operations.QueryOperation

getIdentifier

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

asSummaryString

public String asSummaryString()

指定者:

asSummaryString 在接口中 org.apache.flink.table.operations.Operation

getChildren

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

指定者:

getChildren 在接口中 org.apache.flink.table.operations.QueryOperation

accept

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

指定者:

accept 在接口中 org.apache.flink.table.operations.QueryOperation