com.facebook.presto.spi.function.aggregation

Class AggregationMetadata

java.lang.Object

com.facebook.presto.spi.function.aggregation.AggregationMetadata

public class AggregationMetadata
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AggregationMetadata.AccumulatorStateDescriptor
static class	AggregationMetadata.ParameterMetadata

Field Summary

Fields

Modifier and Type	Field and Description
static Set<Class<?>>	SUPPORTED_PARAMETER_TYPES

Constructor Summary

Constructors

Constructor and Description
AggregationMetadata(String name, List<AggregationMetadata.ParameterMetadata> valueInputMetadata, MethodHandle inputFunction, MethodHandle combineFunction, MethodHandle outputFunction, List<AggregationMetadata.AccumulatorStateDescriptor> accumulatorStateDescriptors, Type outputType)
AggregationMetadata(String name, List<AggregationMetadata.ParameterMetadata> valueInputMetadata, MethodHandle inputFunction, MethodHandle combineFunction, MethodHandle outputFunction, List<AggregationMetadata.AccumulatorStateDescriptor> accumulatorStateDescriptors, Type outputType, List<Class> lambdaInterfaces)

Method Summary

Modifier and Type	Method and Description
static int	countInputChannels(List<AggregationMetadata.ParameterMetadata> metadatas)
List<AggregationMetadata.AccumulatorStateDescriptor>	getAccumulatorStateDescriptors()
MethodHandle	getCombineFunction()
MethodHandle	getInputFunction()
List<Class>	getLambdaInterfaces()
String	getName()
MethodHandle	getOutputFunction()
Type	getOutputType()
List<AggregationMetadata.ParameterMetadata>	getValueInputMetadata()

Methods inherited from class java.lang.Object

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

Field Detail

SUPPORTED_PARAMETER_TYPES

public static final Set<Class<?>> SUPPORTED_PARAMETER_TYPES

Constructor Detail

AggregationMetadata

public AggregationMetadata(String name,
                           List<AggregationMetadata.ParameterMetadata> valueInputMetadata,
                           MethodHandle inputFunction,
                           MethodHandle combineFunction,
                           MethodHandle outputFunction,
                           List<AggregationMetadata.AccumulatorStateDescriptor> accumulatorStateDescriptors,
                           Type outputType)

AggregationMetadata

public AggregationMetadata(String name,
                           List<AggregationMetadata.ParameterMetadata> valueInputMetadata,
                           MethodHandle inputFunction,
                           MethodHandle combineFunction,
                           MethodHandle outputFunction,
                           List<AggregationMetadata.AccumulatorStateDescriptor> accumulatorStateDescriptors,
                           Type outputType,
                           List<Class> lambdaInterfaces)

Method Detail

getOutputType

public Type getOutputType()

getValueInputMetadata

public List<AggregationMetadata.ParameterMetadata> getValueInputMetadata()

getLambdaInterfaces

public List<Class> getLambdaInterfaces()

getName

public String getName()

getInputFunction

public MethodHandle getInputFunction()

getCombineFunction

public MethodHandle getCombineFunction()

getOutputFunction

public MethodHandle getOutputFunction()

getAccumulatorStateDescriptors

public List<AggregationMetadata.AccumulatorStateDescriptor> getAccumulatorStateDescriptors()

countInputChannels

public static int countInputChannels(List<AggregationMetadata.ParameterMetadata> metadatas)