org.apache.flink.table.operations

Class OutputConversionModifyOperation

java.lang.Object

org.apache.flink.table.operations.OutputConversionModifyOperation

All Implemented Interfaces:

ModifyOperation, Operation

@Internal
public class OutputConversionModifyOperation
extends Object
implements ModifyOperation

Special, internal kind of ModifyOperation that allows converting a tree of QueryOperations to a Transformation of given type described with TypeInformation. This is used to convert a relational query to a datastream.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	OutputConversionModifyOperation.UpdateMode Should the output type contain the change flag, and what should the flag represent (retraction or deletion).

Constructor Summary

Constructors

Constructor and Description
OutputConversionModifyOperation(QueryOperation child, DataType type, OutputConversionModifyOperation.UpdateMode updateMode)

Method Summary

Modifier and Type	Method and Description
<R> R	accept(ModifyOperationVisitor<R> visitor)
String	asSummaryString() Returns a string that summarizes this operation for printing to a console.
QueryOperation	getChild()
DataType	getType()
OutputConversionModifyOperation.UpdateMode	getUpdateMode()

Methods inherited from class java.lang.Object

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

Constructor Detail

OutputConversionModifyOperation

public OutputConversionModifyOperation(QueryOperation child,
                                       DataType type,
                                       OutputConversionModifyOperation.UpdateMode updateMode)

Method Detail

getUpdateMode

public OutputConversionModifyOperation.UpdateMode getUpdateMode()

getType

public DataType getType()

getChild

public QueryOperation getChild()

Specified by:

getChild in interface ModifyOperation

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

accept

public <R> R accept(ModifyOperationVisitor<R> visitor)

Specified by:

accept in interface ModifyOperation