Uses of Interface
org.apache.flink.api.common.functions.Function

Packages that use Function

Package	Description
org.apache.flink.api.common.functions
org.apache.flink.api.common.functions.util
org.apache.flink.api.common.operators
org.apache.flink.api.common.operators.base
org.apache.flink.api.java.functions
org.apache.flink.api.java.typeutils

Uses of Function in org.apache.flink.api.common.functions

Subinterfaces of Function in org.apache.flink.api.common.functions

Modifier and Type	Interface and Description
interface	CoGroupFunction<IN1,IN2,O> The interface for CoGroup functions.
interface	CombineFunction<IN,OUT> Generic interface used for combine functions ("combiners").
interface	CrossFunction<IN1,IN2,OUT> Interface for Cross functions.
interface	FilterFunction<T> A filter function is a predicate applied individually to each record.
interface	FlatJoinFunction<IN1,IN2,OUT> Interface for Join functions.
interface	FlatMapFunction<T,O> Base interface for flatMap functions.
interface	FoldFunction<O,T> Base interface for Fold functions.
interface	GroupCombineFunction<IN,OUT> Generic interface used for combine functions ("combiners").
interface	GroupReduceFunction<T,O> The interface for group reduce functions.
interface	JoinFunction<IN1,IN2,OUT> Interface for Join functions.
interface	MapFunction<T,O> Base interface for Map functions.
interface	MapPartitionFunction<T,O> Interface for "mapPartition" functions.
interface	ReduceFunction<T> Base interface for Reduce functions.
interface	RichFunction An base interface for all rich user-defined functions.

Classes in org.apache.flink.api.common.functions that implement Function

Modifier and Type	Class and Description
class	AbstractRichFunction An abstract stub implementation for rich user-defined functions.
class	RichCoGroupFunction<IN1,IN2,OUT> Rich variant of the CoGroupFunction.
class	RichCrossFunction<IN1,IN2,OUT> Rich variant of the CrossFunction.
class	RichFilterFunction<T> Rich variant of the FilterFunction.
class	RichFlatJoinFunction<IN1,IN2,OUT> Rich variant of the FlatJoinFunction.
class	RichFlatMapFunction<IN,OUT> Rich variant of the FlatMapFunction.
class	RichFoldFunction<O,T> Rich variant of the FoldFunction.
class	RichGroupCombineFunction<IN,OUT> Rich variant of the GroupCombineFunction.
class	RichGroupReduceFunction<IN,OUT> Rich variant of the GroupReduceFunction.
class	RichJoinFunction<IN1,IN2,OUT> Rich variant of the JoinFunction.
class	RichMapFunction<IN,OUT> Rich variant of the MapFunction.
class	RichMapPartitionFunction<I,O> Rich variant of the MapPartitionFunction.
class	RichReduceFunction<T> Rich variant of the ReduceFunction.

Uses of Function in org.apache.flink.api.common.functions.util

Classes in org.apache.flink.api.common.functions.util that implement Function

Modifier and Type	Class and Description
class	NoOpFunction

Methods in org.apache.flink.api.common.functions.util with parameters of type Function

Modifier and Type	Method and Description
static Method	FunctionUtils.checkAndExtractLambdaMethod(Function function)
static void	FunctionUtils.closeFunction(Function function)
static RuntimeContext	FunctionUtils.getFunctionRuntimeContext(Function function, RuntimeContext defaultContext)
static void	FunctionUtils.openFunction(Function function, Configuration parameters)
static void	FunctionUtils.setFunctionRuntimeContext(Function function, RuntimeContext context)

Uses of Function in org.apache.flink.api.common.operators

Classes in org.apache.flink.api.common.operators with type parameters of type Function

Modifier and Type	Class and Description
class	AbstractUdfOperator<OUT,FT extends Function> Abstract superclass for all contracts that represent actual operators.
class	DualInputOperator<IN1,IN2,OUT,FT extends Function> Abstract operator superclass for for all operators that have two inputs, like "Join", "CoGroup", or "Cross".
class	SingleInputOperator<IN,OUT,FT extends Function> Abstract superclass for for all operators that have one input like "map" or "reduce".

Uses of Function in org.apache.flink.api.common.operators.base

Classes in org.apache.flink.api.common.operators.base that implement Function

Modifier and Type	Class and Description
static class	BulkIterationBase.TerminationCriterionMapper<X> Special Mapper that is added before a termination criterion and is only a container for an special aggregator

Uses of Function in org.apache.flink.api.java.functions

Subinterfaces of Function in org.apache.flink.api.java.functions

Modifier and Type	Interface and Description
interface	KeySelector<IN,KEY> The KeySelector allows to use arbitrary objects for operations such as reduce, reduceGroup, join, coGoup, etc.

Uses of Function in org.apache.flink.api.java.typeutils

Methods in org.apache.flink.api.java.typeutils with parameters of type Function

Modifier and Type	Method and Description
static <IN1,IN2,OUT> TypeInformation<OUT>	TypeExtractor.getBinaryOperatorReturnType(Function function, Class<?> baseClass, boolean hasIterables, boolean hasCollector, TypeInformation<IN1> in1Type, TypeInformation<IN2> in2Type, String functionName, boolean allowMissing) Returns the binary operator's return type.
static <IN1,IN2,OUT> TypeInformation<OUT>	TypeExtractor.getBinaryOperatorReturnType(Function function, Class<?> baseClass, int inputTypeArgumentIndex, int outputTypeArgumentIndex, TypeInformation<IN1> in1Type, TypeInformation<IN2> in2Type, String functionName, boolean allowMissing) Returns the binary operator's return type.
static <IN,OUT> TypeInformation<OUT>	TypeExtractor.getUnaryOperatorReturnType(Function function, Class<?> baseClass, boolean hasIterable, boolean hasCollector, TypeInformation<IN> inType, String functionName, boolean allowMissing) Returns the unary operator's return type.
static <IN,OUT> TypeInformation<OUT>	TypeExtractor.getUnaryOperatorReturnType(Function function, Class<?> baseClass, int inputTypeArgumentIndex, int outputTypeArgumentIndex, TypeInformation<IN> inType, String functionName, boolean allowMissing) Returns the unary operator's return type.