Package org.apache.flink.table.operations

Class CalculatedQueryOperation

java.lang.Object

org.apache.flink.table.operations.CalculatedQueryOperation

All Implemented Interfaces:

Operation, QueryOperation

@Internal
public class CalculatedQueryOperation
extends Object
implements QueryOperation

Describes a relational operation that was created from applying a TableFunction.

Field Summary

Fields

Modifier and Type	Field	Description
static String	INPUT_ALIAS

Constructor Summary

Constructors

Constructor	Description
CalculatedQueryOperation(ContextResolvedFunction resolvedFunction, List<ResolvedExpression> arguments, ResolvedSchema resolvedSchema)

Method Summary

Modifier and Type	Method	Description
<U> U	accept(QueryOperationVisitor<U> visitor)
String	asSerializableString()	Returns a string that fully serializes this instance.
String	asSummaryString()	Returns a string that summarizes this operation for printing to a console.
List<ResolvedExpression>	getArguments()
List<QueryOperation>	getChildren()
ContextResolvedFunction	getResolvedFunction()
ResolvedSchema	getResolvedSchema()	Resolved schema of this operation.

Methods inherited from class java.lang.Object

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

Field Detail

INPUT_ALIAS

public static final String INPUT_ALIAS

See Also:

Constant Field Values

Constructor Detail

CalculatedQueryOperation

public CalculatedQueryOperation(ContextResolvedFunction resolvedFunction,
                                List<ResolvedExpression> arguments,
                                ResolvedSchema resolvedSchema)

Method Detail

getResolvedFunction

public ContextResolvedFunction getResolvedFunction()

getArguments

public List<ResolvedExpression> getArguments()

getResolvedSchema

public ResolvedSchema getResolvedSchema()

Description copied from interface: QueryOperation

Resolved schema of this operation.

Specified by:

getResolvedSchema in interface QueryOperation

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

asSerializableString

public String asSerializableString()

Description copied from interface: QueryOperation

Returns a string that fully serializes this instance. The serialized string can be used for storing the query in e.g. a Catalog as a view.

Specified by:

asSerializableString in interface QueryOperation

Returns:

detailed string for persisting in a catalog

See Also:

Operation.asSummaryString()

getChildren

public List<QueryOperation> getChildren()

Specified by:

getChildren in interface QueryOperation

accept

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

Specified by:

accept in interface QueryOperation