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

Class TypeOfFunction

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.TypeOfFunction

All Implemented Interfaces:

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

@Internal
public class TypeOfFunction
extends BuiltInScalarFunction

Implementation of BuiltInFunctionDefinitions.TYPE_OF.

See Also:

Serialized Form

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
org.apache.flink.table.data.StringData	eval(Object... unused)
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

close, functionIdentifier, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

TypeOfFunction

public TypeOfFunction(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.StringData eval(Object... unused)