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

Class CoalesceFunction

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.CoalesceFunction

All Implemented Interfaces:

Serializable, FunctionDefinition

@Internal
public class CoalesceFunction
extends BuiltInScalarFunction

Implementation of BuiltInFunctionDefinitions.COALESCE.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CoalesceFunction(SpecializedFunction.SpecializedContext context)

Method Summary

Modifier and Type	Method and Description
Object	eval(Object... args)

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, 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

supportsConstantFolding

Constructor Detail

CoalesceFunction

public CoalesceFunction(SpecializedFunction.SpecializedContext context)

Method Detail

eval

@Nullable
public Object eval(Object... args)