Package de.fzi.power.regression.r.io

Class RRegressionConnectionImpl

java.lang.Object

de.fzi.power.regression.r.io.RRegressionConnectionImpl

All Implemented Interfaces:

IRConnection, RRegressionConnection

public class RRegressionConnectionImpl
extends Object
implements RRegressionConnection

Constructor Summary

Constructors

Constructor	Description
RRegressionConnectionImpl()

Method Summary

Modifier and Type	Method	Description
void	assign(String name, double[] array)	Stores an array in a R variable.
void	assign(String name, int[] array)	Stores an array in a R variable.
void	assign(String name, String[] array)	Stores an array in a R variable.
void	checkPackageAvailability(String packageName)	Checks the availability of the package with the given name in R.
Vector<org.rosuda.REngine.REXP>	execute(String rCommands)	Executes the command(s) in R.
static RRegressionConnection	getRRegressionConnection()
protected void	initalizeConnection()	Initializes the connection to a R engine.
static boolean	isEngineAvailable()	checks if an R engine could be found and the connection is established.

Methods inherited from class java.lang.Object

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

Constructor Detail

RRegressionConnectionImpl

public RRegressionConnectionImpl()

Method Detail

getRRegressionConnection

public static RRegressionConnection getRRegressionConnection()

assign

public void assign(String name,
                   int[] array)

Description copied from interface: RRegressionConnection

Stores an array in a R variable.

Specified by:

assign in interface RRegressionConnection

Parameters:

name - Name of the R variable in which the array is stored.

array - Array to store in an R variable.

assign

public void assign(String name,
                   String[] array)

Description copied from interface: RRegressionConnection

Stores an array in a R variable.

Specified by:

assign in interface RRegressionConnection

Parameters:

name - Name of the R variable in which the array is stored.

array - Array to store in an R variable.

checkPackageAvailability

public void checkPackageAvailability(String packageName)

Checks the availability of the package with the given name in R. If it is not available an error message is logged and displayed.

Specified by:

checkPackageAvailability in interface RRegressionConnection

Parameters:

packageName - The name of the R package.

initalizeConnection

protected void initalizeConnection()

Initializes the connection to a R engine.

execute

public Vector<org.rosuda.REngine.REXP> execute(String rCommands)

Description copied from interface: IRConnection

Executes the command(s) in R.

Specified by:

execute in interface IRConnection

Parameters:

rCommands - One or more valid commands in R, separated by \n.

Returns:

result Result returned from R. Empty if no result was returned.

isEngineAvailable

public static boolean isEngineAvailable()

checks if an R engine could be found and the connection is established.

Returns:

true if the connection is established.

assign

public void assign(String name,
                   double[] array)

Description copied from interface: IRConnection

Stores an array in a R variable.

Specified by:

assign in interface IRConnection

Parameters:

name - Name of the R variable in which the array is stored.

array - Array to store in an R variable.