org.apache.flink.table.planner.functions.tablefunctions

Class ReplicateRows

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.TableFunction<org.apache.flink.types.Row>

org.apache.flink.table.planner.functions.tablefunctions.ReplicateRows

All Implemented Interfaces:

Serializable, org.apache.flink.table.functions.FunctionDefinition

public class ReplicateRows
extends org.apache.flink.table.functions.TableFunction<org.apache.flink.types.Row>

Replicate the row N times. N is specified as the first argument to the function. This is an internal function solely used by optimizer to rewrite EXCEPT ALL AND INTERSECT ALL queries.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ReplicateRows(org.apache.flink.api.common.typeinfo.TypeInformation[] fieldTypes)

Method Summary

Modifier and Type	Method and Description
void	eval(Object... inputs)
org.apache.flink.api.common.typeinfo.TypeInformation<?>[]	getParameterTypes(Class<?>[] signature)
org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.types.Row>	getResultType()

Methods inherited from class org.apache.flink.table.functions.TableFunction

collect, getKind, getTypeInference, setCollector

Methods inherited from class org.apache.flink.table.functions.UserDefinedFunction

close, functionIdentifier, open, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.table.functions.FunctionDefinition

getRequirements, isDeterministic

Constructor Detail

ReplicateRows

public ReplicateRows(org.apache.flink.api.common.typeinfo.TypeInformation[] fieldTypes)

Method Detail

eval

public void eval(Object... inputs)

getResultType

public org.apache.flink.api.common.typeinfo.TypeInformation<org.apache.flink.types.Row> getResultType()

Overrides:

getResultType in class org.apache.flink.table.functions.TableFunction<org.apache.flink.types.Row>

getParameterTypes

public org.apache.flink.api.common.typeinfo.TypeInformation<?>[] getParameterTypes(Class<?>[] signature)

Overrides:

getParameterTypes in class org.apache.flink.table.functions.TableFunction<org.apache.flink.types.Row>