org.rosuda.REngine
Class REXPUnknown

java.lang.Object
  org.rosuda.REngine.REXP
      org.rosuda.REngine.REXPUnknown

public class REXPUnknown
extends REXP

REXPUnknown is a stand-in for an object that cannot be represented in the REngine hierarchy. Usually this class can be encountered when new types are introduced in R or if a given engine doesn't support all data types. Usually REXPUnknown can only be retrieved from the engine but never assigned.

Field Summary

Fields inherited from class org.rosuda.REngine.REXP

attr, maxDebugItems

Constructor Summary

REXPUnknown(int type)
creates a new unknown object of the given type

REXPUnknown(int type, REXPList attr)
creates a new unknown object of the given type

Method Summary

int	getType() returns the internal R type of this unknown obejct
java.lang.String	toString() returns a string description of the object

Methods inherited from class org.rosuda.REngine.REXP

_attr, asBytes, asDouble, asDoubleMatrix, asDoubles, asFactor, asInteger, asIntegers, asList, asNativeJavaObject, asString, asStrings, createDataFrame, createDoubleMatrix, dim, getAttribute, hasAttribute, inherits, isComplex, isEnvironment, isExpression, isFactor, isInteger, isLanguage, isList, isLogical, isNA, isNull, isNumeric, isPairList, isRaw, isRecursive, isReference, isString, isSymbol, isVector, length, toDebugString

Methods inherited from class java.lang.Object

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

Constructor Detail

REXPUnknown

public REXPUnknown(int type)

creates a new unknown object of the given type

Parameters:

type - internal R type code of this object

REXPUnknown

public REXPUnknown(int type,
                   REXPList attr)

creates a new unknown object of the given type

Parameters:

type - internal R type code of this object

attr - attributes

Method Detail

getType

public int getType()

returns the internal R type of this unknown obejct

Returns:

type code

toString

public java.lang.String toString()

Description copied from class: REXP

returns a string description of the object

Overrides:

toString in class REXP

Returns:

string describing the object - it can be of an arbitrary form and used only for debugging (do not confuse with REXP.asString() for accessing string REXPs)