org.rosuda.REngine
Class REXPSymbol

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

public class REXPSymbol
extends REXP

REXPSymbol represents a symbol in R.

Field Summary

Fields inherited from class org.rosuda.REngine.REXP

attr, maxDebugItems

Constructor Summary

REXPSymbol(java.lang.String name)
create a new symbol of the given name

Method Summary

java.lang.Object	asNativeJavaObject() attempt to represent the REXP by a native Java object and return it.
java.lang.String	asString() returns the name of the symbol
java.lang.String[]	asStrings() returns the contents as an array of Strings (if supported by the represented object)
boolean	isSymbol() check whether the REXP object is a symbol
java.lang.String	toDebugString() returns representation that it useful for debugging (e.g.
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, createDataFrame, dim, getAttribute, hasAttribute, inherits, isComplex, isEnvironment, isExpression, isFactor, isInteger, isLanguage, isList, isLogical, isNA, isNull, isNumeric, isPairList, isRaw, isRecursive, isReference, isString, isVector, length

Methods inherited from class java.lang.Object

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

Constructor Detail

REXPSymbol

public REXPSymbol(java.lang.String name)

create a new symbol of the given name

Method Detail

isSymbol

public boolean isSymbol()

Description copied from class: REXP

check whether the REXP object is a symbol

Overrides:

isSymbol in class REXP

Returns:

true if the receiver is a symbol, false otherwise

asString

public java.lang.String asString()

returns the name of the symbol

Overrides:

asString in class REXP

Returns:

name of the symbol

asStrings

public java.lang.String[] asStrings()

Description copied from class: REXP

returns the contents as an array of Strings (if supported by the represented object)

Overrides:

asStrings in class REXP

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)

toDebugString

public java.lang.String toDebugString()

Description copied from class: REXP

returns representation that it useful for debugging (e.g. it includes attributes and may include vector values -- see REXP.maxDebugItems)

Overrides:

toDebugString in class REXP

Returns:

extended description of the obejct -- it may include vector values

asNativeJavaObject

public java.lang.Object asNativeJavaObject()

Description copied from class: REXP

attempt to represent the REXP by a native Java object and return it. Note that this may lead to loss of information (e.g., factors may be returned as a string array) and attributes are ignored. Not all R types can be converted to native Java objects. Also note that R has no concept of scalars, so vectors of length 1 will always be returned as an arrays (i.e., int[1] and not Integer).

Overrides:

asNativeJavaObject in class REXP