Package ca.uqac.lif.cep.tuples

Class ProjectTuple

java.lang.Object

ca.uqac.lif.cep.functions.Function

ca.uqac.lif.cep.tuples.ProjectTuple

All Implemented Interfaces:

ca.uqac.lif.cep.Duplicable, ca.uqac.lif.cep.functions.DuplicableFunction

public class ProjectTuple
extends ca.uqac.lif.cep.functions.Function

Creates an output tuple from input tuples by combining their values.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ProjectTuple.NameFunctionPair	Associates a tuple's key to a function to be evaluated on input tuples

Field Summary

Fields

Modifier and Type	Field	Description
protected FixedTupleBuilder	m_builder	The builder used to create the output tuples
protected int	m_inputArity	The function's input arity
protected ProjectTuple.NameFunctionPair[]	m_pairs	The list of associations between the output tuple's key and its corresponding value

Fields inherited from class ca.uqac.lif.cep.functions.Function

s_maxInputArity

Constructor Summary

Constructors

Constructor	Description
ProjectTuple(int input_arity, ProjectTuple.NameFunctionPair... pairs)	Creates a new instance of the function
ProjectTuple(ProjectTuple.NameFunctionPair... pairs)	Creates a new instance of the function

Method Summary

Modifier and Type	Method	Description
ca.uqac.lif.cep.functions.Function	duplicate(boolean with_state)
void	evaluate(Object[] inputs, Object[] outputs, ca.uqac.lif.cep.Context context)
int	getInputArity()
void	getInputTypesFor(Set<Class<?>> classes, int index)
int	getOutputArity()
Class<?>	getOutputTypeFor(int index)

Methods inherited from class ca.uqac.lif.cep.functions.Function

duplicate, evaluate, evaluate, evaluateLazy, evaluatePartial, printState, readState, reset

Methods inherited from class java.lang.Object

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

Field Details

m_inputArity

protected int m_inputArity

The function's input arity

m_pairs

protected ProjectTuple.NameFunctionPair[] m_pairs

The list of associations between the output tuple's key and its corresponding value

m_builder

protected FixedTupleBuilder m_builder

The builder used to create the output tuples

Constructor Details

ProjectTuple

public ProjectTuple(int input_arity,
 ProjectTuple.NameFunctionPair... pairs)

Creates a new instance of the function

Parameters:

input_arity - The function's input arity

pairs - The list of associations between the output tuple's key and its corresponding value

ProjectTuple

public ProjectTuple(ProjectTuple.NameFunctionPair... pairs)

Creates a new instance of the function

Parameters:

pairs - The list of associations between the output tuple's key and its corresponding value

Method Details

evaluate

public void evaluate(Object[] inputs,
 Object[] outputs,
 ca.uqac.lif.cep.Context context)

Specified by:

evaluate in class ca.uqac.lif.cep.functions.Function

getInputArity

public int getInputArity()

Specified by:

getInputArity in class ca.uqac.lif.cep.functions.Function

getOutputArity

public int getOutputArity()

Specified by:

getOutputArity in class ca.uqac.lif.cep.functions.Function

getInputTypesFor

public void getInputTypesFor(Set<Class<?>> classes,
 int index)

Specified by:

getInputTypesFor in class ca.uqac.lif.cep.functions.Function

getOutputTypeFor

public Class<?> getOutputTypeFor(int index)

Specified by:

getOutputTypeFor in class ca.uqac.lif.cep.functions.Function

duplicate

public ca.uqac.lif.cep.functions.Function duplicate(boolean with_state)

Specified by:

duplicate in interface ca.uqac.lif.cep.Duplicable

Specified by:

duplicate in class ca.uqac.lif.cep.functions.Function