org.apache.flink.table.runtime.functions.scalar

Class MapUnionFunction

java.lang.Object

org.apache.flink.table.functions.UserDefinedFunction

org.apache.flink.table.functions.ScalarFunction

org.apache.flink.table.runtime.functions.scalar.BuiltInScalarFunction

org.apache.flink.table.runtime.functions.scalar.MapUnionFunction

All Implemented Interfaces:

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

@Internal
public class MapUnionFunction
extends BuiltInScalarFunction

Implementation of BuiltInFunctionDefinitions.MAP_UNION.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
MapUnionFunction(org.apache.flink.table.functions.SpecializedFunction.SpecializedContext context)

Method Summary

Modifier and Type	Method and Description
void	close()
org.apache.flink.table.data.MapData	eval(org.apache.flink.table.data.MapData... maps)
void	open(org.apache.flink.table.functions.FunctionContext context)

Methods inherited from class org.apache.flink.table.runtime.functions.scalar.BuiltInScalarFunction

getArgumentDataTypes, getOutputDataType, getRequirements, getTypeInference, isDeterministic

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

getKind, getParameterTypes, getResultType

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

functionIdentifier, 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

supportsConstantFolding

Constructor Detail

MapUnionFunction

public MapUnionFunction(org.apache.flink.table.functions.SpecializedFunction.SpecializedContext context)

Method Detail

open

public void open(org.apache.flink.table.functions.FunctionContext context)
          throws Exception

Overrides:

open in class org.apache.flink.table.functions.UserDefinedFunction

Throws:

Exception

eval

@Nullable
public org.apache.flink.table.data.MapData eval(@Nullable
                                                          org.apache.flink.table.data.MapData... maps)

close

public void close()
           throws Exception

Overrides:

close in class org.apache.flink.table.functions.UserDefinedFunction

Throws:

Exception