Package io.prestosql.operator.scalar

Class MapTransformKeysFunction

java.lang.Object

io.prestosql.metadata.SqlScalarFunction

io.prestosql.operator.scalar.MapTransformKeysFunction

All Implemented Interfaces:

SqlFunction

public final class MapTransformKeysFunction
extends SqlScalarFunction

Field Summary

Fields

Modifier and Type	Field	Description
static String	NAME

Constructor Summary

Constructors

Constructor	Description
MapTransformKeysFunction(BlockTypeOperators blockTypeOperators)

Method Summary

Modifier and Type	Method	Description
static Object	createState(MapType mapType)
protected ScalarFunctionImplementation	specialize(FunctionBinding functionBinding)

Methods inherited from class io.prestosql.metadata.SqlScalarFunction

getFunctionMetadata, specialize

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.prestosql.metadata.SqlFunction

getFunctionDependencies, getFunctionDependencies

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

MapTransformKeysFunction

public MapTransformKeysFunction(BlockTypeOperators blockTypeOperators)

Method Detail

specialize

protected ScalarFunctionImplementation specialize(FunctionBinding functionBinding)

Overrides:

specialize in class SqlScalarFunction

createState

public static Object createState(MapType mapType)