org.nuiton.j2r.types
Class RList

java.lang.Object
  org.nuiton.j2r.types.REXPAbstract
      org.nuiton.j2r.types.RList

All Implemented Interfaces:

REXP

public class RList
extends REXPAbstract
implements REXP

Java implementation of the R List.

Author:

couteau

Field Summary

Fields inherited from class org.nuiton.j2r.types.REXPAbstract

attributes, dataInconsistencyText, engine, indexExceptionText, names, noVariable, variable

Constructor Summary

RList(List<String> names, List<Object> data, REngine engine, String variable)
Create the RList with parameters and initialize it in R.

RList(REngine engine)
Create a default RList linked to a R engine (the List is not initialized in R.)

RList(String[] names, List<Object> data, REngine engine, String variable)
Create the RList with parameters and initialize it in R.

Method Summary

void	checkX(int x) Method that check if the index is inside the REXP bounds.
Object	get(int x) Method to get the object located at the [x] coordinate.
List<Object>	getData() Method to get the elements of the R list (there is no synchronizing with R).
void	getFrom(String variable) Method to get a list from a variable in R.
void	set(int x, Object data) Method to set the xth object of the list to a value.
void	setData(List<Object> data) Method to assign the data of the R list.
String	toRString() Method to export the list in a String for evaluation in R.

Methods inherited from class org.nuiton.j2r.types.REXPAbstract

checkVariable, getAttribute, getAttributes, getEngine, getName, getNames, getVariable, setAttribute, setAttributes, setEngine, setName, setNames, setVariable

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.nuiton.j2r.types.REXP

getAttribute, getAttributes, getVariable, setAttribute, setAttributes

Constructor Detail

RList

public RList(REngine engine)

Create a default RList linked to a R engine (the List is not initialized in R.)

Parameters:

engine - the R engine in which to assign the RList.

RList

public RList(List<String> names,
             List<Object> data,
             REngine engine,
             String variable)
      throws RException

Create the RList with parameters and initialize it in R.

Parameters:

names - the names of each object of the list.

data - the list of the objects that compound the RList.

engine - the R engine in which to assign the RList.

variable - the variable name in R.

Throws:

RException - if an error occur while initializing the list in R.

RList

public RList(String[] names,
             List<Object> data,
             REngine engine,
             String variable)
      throws RException

Create the RList with parameters and initialize it in R.

Parameters:

names - the names of each object of the list.

data - the list of the objects that compound the RList.

engine - the R engine in which to assign the RList.

variable - the variable name in R.

Throws:

RException - if an error occur while initializing the list in R.

Method Detail

toRString

public String toRString()
                 throws RException

Method to export the list in a String for evaluation in R.

Specified by:

toRString in interface REXP

Returns:

a R string representation of the list to create it in R.

Throws:

RException - If no variable name is given

set

public void set(int x,
                Object data)
         throws RException

Method to set the xth object of the list to a value.

Parameters:

x - x coordinate (from 0 to size-1)

data - value to set

Throws:

RException - if no variable name has been given to the list

get

public Object get(int x)
           throws RException

Method to get the object located at the [x] coordinate.

Parameters:

x - x coordinates (between 0 and size-1)

Returns:

the Object located at the [x] coordinate

Throws:

RException - if no variable name has been given to the list

getData

public List<Object> getData()

Method to get the elements of the R list (there is no synchronizing with R).

Returns:

a List containing the elements of the R list.

setData

public void setData(List<Object> data)
             throws RException

Method to assign the data of the R list.

Parameters:

data - a List of Objects, containing each element of the R list

Throws:

RException

getFrom

public void getFrom(String variable)
             throws RException

Method to get a list from a variable in R.

Specified by:

getFrom in interface REXP

Parameters:

variable - name of the data.frame in R

Throws:

RException

checkX

public void checkX(int x)

Method that check if the index is inside the REXP bounds.

Specified by:

checkX in interface REXP

Parameters:

x - index