org.apache.flink.table.operations

Class ExternalQueryOperation<E>

java.lang.Object

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

Type Parameters:

E - External type of data stream

All Implemented Interfaces:

Operation, QueryOperation

@Internal
public final class ExternalQueryOperation<E>
extends Object
implements QueryOperation

Describes a relational operation that reads from a DataStream.

It contains all information necessary to perform a stream-to-table conversion.

Constructor Summary

Constructors

Constructor and Description
ExternalQueryOperation(ContextResolvedTable contextResolvedTable, DataStream<E> dataStream, DataType physicalDataType, boolean isTopLevelRecord, ChangelogMode changelogMode)

Method Summary

Modifier and Type	Method and Description
<T> T	accept(QueryOperationVisitor<T> visitor)
String	asSummaryString() Returns a string that summarizes this operation for printing to a console.
ChangelogMode	getChangelogMode()
List<QueryOperation>	getChildren()
ContextResolvedTable	getContextResolvedTable()
DataStream<E>	getDataStream()
DataType	getPhysicalDataType()
ResolvedSchema	getResolvedSchema() Resolved schema of this operation.
boolean	isTopLevelRecord()

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

ExternalQueryOperation

public ExternalQueryOperation(ContextResolvedTable contextResolvedTable,
                              DataStream<E> dataStream,
                              DataType physicalDataType,
                              boolean isTopLevelRecord,
                              ChangelogMode changelogMode)

Method Detail

getContextResolvedTable

public ContextResolvedTable getContextResolvedTable()

getDataStream

public DataStream<E> getDataStream()

getPhysicalDataType

public DataType getPhysicalDataType()

isTopLevelRecord

public boolean isTopLevelRecord()

getChangelogMode

public ChangelogMode getChangelogMode()

asSummaryString

public String asSummaryString()

Description copied from interface: Operation

Returns a string that summarizes this operation for printing to a console. An implementation might skip very specific properties.

Specified by:

asSummaryString in interface Operation

Returns:

summary string of this operation for debugging purposes

getChildren

public List<QueryOperation> getChildren()

Specified by:

getChildren in interface QueryOperation

getResolvedSchema

public ResolvedSchema getResolvedSchema()

Description copied from interface: QueryOperation

Resolved schema of this operation.

Specified by:

getResolvedSchema in interface QueryOperation

accept

public <T> T accept(QueryOperationVisitor<T> visitor)

Specified by:

accept in interface QueryOperation