Package uk.gov.gchq.gaffer.operation.impl.function

Class Aggregate

java.lang.Object

uk.gov.gchq.gaffer.operation.impl.function.Aggregate

All Implemented Interfaces:

Closeable, AutoCloseable, Function, Input<Iterable<? extends Element>>, InputOutput<Iterable<? extends Element>,Iterable<? extends Element>>, MultiInput<Element>, Output<Iterable<? extends Element>>, Operation

public class Aggregate
extends Object
implements Function, InputOutput<Iterable<? extends Element>,Iterable<? extends Element>>, MultiInput<Element>

An Aggregate operation applies ElementAggregator(s) to the provided Iterable of Elements by their group, and returns an Iterable.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Aggregate.Builder

Nested classes/interfaces inherited from interface uk.gov.gchq.gaffer.operation.Operation

Operation.BaseBuilder<OP extends Operation,B extends Operation.BaseBuilder<OP,?>>

Constructor Summary

Constructors

Constructor	Description
Aggregate()

Method Summary

Modifier and Type	Method	Description
Map<String,AggregatePair>	getEdges()	Should return a Map of Edge group to an Element Function, eg.
Map<String,AggregatePair>	getEntities()	Should return a Map of Entity group to an Element Function, eg.
Iterable<? extends Element>	getInput()
Map<String,String>	getOptions()
com.fasterxml.jackson.core.type.TypeReference<Iterable<? extends Element>>	getOutputTypeReference()
void	setEdges(Map<String,AggregatePair> edges)
void	setEntities(Map<String,AggregatePair> entities)
void	setInput(Iterable<? extends Element> input)
void	setOptions(Map<String,String> options)
Aggregate	shallowClone()	Operation implementations should ensure a ShallowClone method is implemented.

Methods inherited from class java.lang.Object

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

Methods inherited from interface uk.gov.gchq.gaffer.operation.io.Input

close

Methods inherited from interface uk.gov.gchq.gaffer.operation.io.MultiInput

createInputArray, setInput

Methods inherited from interface uk.gov.gchq.gaffer.operation.Operation

_getNullOrOptions, addOption, containsOption, getOption, getOption, validate, validateRequiredFieldPresent

Methods inherited from interface uk.gov.gchq.gaffer.operation.io.Output

castToOutputType, getOutputClass, getOutputType

Constructor Detail

Aggregate

public Aggregate()

Method Detail

getInput

public Iterable<? extends Element> getInput()

Specified by:

getInput in interface Input<Iterable<? extends Element>>

Specified by:

getInput in interface MultiInput<Element>

setInput

public void setInput(Iterable<? extends Element> input)

Specified by:

setInput in interface Input<Iterable<? extends Element>>

Specified by:

setInput in interface MultiInput<Element>

getOutputTypeReference

public com.fasterxml.jackson.core.type.TypeReference<Iterable<? extends Element>> getOutputTypeReference()

Specified by:

getOutputTypeReference in interface Output<Iterable<? extends Element>>

shallowClone

public Aggregate shallowClone()
                       throws org.apache.commons.lang3.exception.CloneFailedException

Description copied from interface: Operation

Operation implementations should ensure a ShallowClone method is implemented. Performs a shallow clone. Creates a new instance and copies the fields across. It does not clone the fields. If the operation contains nested operations, these must also be cloned.

Specified by:

shallowClone in interface Operation

Returns:

shallow clone

Throws:

org.apache.commons.lang3.exception.CloneFailedException - if a Clone error occurs

getOptions

public Map<String,String> getOptions()

Specified by:

getOptions in interface Operation

Returns:

the operation options. This may contain store specific options such as authorisation strings or and other properties required for the operation to be executed. Note these options will probably not be interpreted in the same way by every store implementation.

setOptions

public void setOptions(Map<String,String> options)

Specified by:

setOptions in interface Operation

Parameters:

options - the operation options. This may contain store specific options such as authorisation strings or and other properties required for the operation to be executed. Note these options will probably not be interpreted in the same way by every store implementation.

getEdges

public Map<String,AggregatePair> getEdges()

Description copied from interface: Function

Should return a Map of Edge group to an Element Function, eg. an ElementFilter This is to enable generic handling of each of the implementations of Function.

Specified by:

getEdges in interface Function

Returns:

A map of Edge group to Element Function

setEdges

public void setEdges(Map<String,AggregatePair> edges)

getEntities

public Map<String,AggregatePair> getEntities()

Description copied from interface: Function

Should return a Map of Entity group to an Element Function, eg. an ElementFilter This is to enable generic handling of each of the implementations of Function.

Specified by:

getEntities in interface Function

Returns:

A map of Entity group to Element Function

setEntities

public void setEntities(Map<String,AggregatePair> entities)