kieker.tools.util

Class RBridgeControl

java.lang.Object

kieker.tools.util.RBridgeControl

public final class RBridgeControl
extends java.lang.Object

Since:

1.10

Author:

Tillmann Carlos Bielefeld

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RBridgeControl()

Method Summary

Methods

Modifier and Type	Method and Description
void	assign(java.lang.String variable, double[] values)
void	assign(java.lang.String variable, java.lang.Double[] values)
void	assign(java.lang.String variable, java.lang.Long[] values)
double	eDbl(java.lang.String input)
double[]	eDblArr(java.lang.String input)
java.lang.String	eString(java.lang.String input)
java.lang.Object	evalWithR(java.lang.String input) Wraps the execution of an arbitrary R expression.
static RBridgeControl	getInstance() Delivers the singleton instance of this class.
void	toTS(java.lang.String variable)
void	toTS(java.lang.String variable, long frequency)
static java.lang.String	uniqueVarname() Returns a globally unique variable name, even during the access of multiple threads.

Methods inherited from class java.lang.Object

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

Constructor Detail

RBridgeControl

protected RBridgeControl()

Method Detail

evalWithR

public java.lang.Object evalWithR(java.lang.String input)
                           throws InvalidREvaluationResultException

Wraps the execution of an arbitrary R expression. Both errors and results are logged.

Parameters:

input - The R expression to evaluate.

Returns:

The result or the error of the evaluation of the given R expression. The method tries to convert it into a string, if possible.

Throws:

InvalidREvaluationResultException

toTS

public void toTS(java.lang.String variable)
          throws InvalidREvaluationResultException

Parameters:

variable - variable to R

Throws:

InvalidREvaluationResultException

toTS

public void toTS(java.lang.String variable,
        long frequency)
          throws InvalidREvaluationResultException

Parameters:

variable - variable to R

frequency - frequency to R

Throws:

InvalidREvaluationResultException

eDbl

public double eDbl(java.lang.String input)

Parameters:

input - string

Returns:

Double.NaN in case of error, else dbvalue

eString

public java.lang.String eString(java.lang.String input)

Parameters:

input - inputstring

Returns:

Rdata

eDblArr

public double[] eDblArr(java.lang.String input)

Parameters:

input - inputstring

Returns:

Rdata

assign

public void assign(java.lang.String variable,
          double[] values)
            throws InvalidREvaluationResultException

Parameters:

variable - string

values - assign value

Throws:

InvalidREvaluationResultException

assign

public void assign(java.lang.String variable,
          java.lang.Double[] values)
            throws InvalidREvaluationResultException

Parameters:

variable - string

values - assign vaules

Throws:

InvalidREvaluationResultException

assign

public void assign(java.lang.String variable,
          java.lang.Long[] values)
            throws InvalidREvaluationResultException

Parameters:

variable - string

values - assign vaules

Throws:

InvalidREvaluationResultException

uniqueVarname

public static java.lang.String uniqueVarname()

Returns a globally unique variable name, even during the access of multiple threads.

Returns:

A unique variable name of the form var_1, var_2, ....

getInstance

public static final RBridgeControl getInstance()

Delivers the singleton instance of this class.

Returns:

The singleton instance.