org.smartfrog.sfcore.languages.sf.functions
Class BaseUnaryOperator

java.lang.Object
  org.smartfrog.sfcore.languages.sf.functions.BaseFunction
      org.smartfrog.sfcore.languages.sf.functions.BaseUnaryOperator

All Implemented Interfaces:

Function

Direct Known Subclasses:

Not

public abstract class BaseUnaryOperator
extends BaseFunction

Defines the base functionality for the unary operator functions. The data on which to operate is defined to be the attribute "data".

Field Summary

static java.lang.String

DATA_ATTRIBUTE Name of the attribute used for unary operators "data"

Fields inherited from class org.smartfrog.sfcore.languages.sf.functions.BaseFunction

context, name

Constructor Summary

BaseUnaryOperator()

Method Summary

protected java.lang.Object	doFunction() Implements the functionality of base unary operator.
protected abstract java.lang.Object	doOperator(java.lang.Object a) The method to implement the functionality of any operator.

Methods inherited from class org.smartfrog.sfcore.languages.sf.functions.BaseFunction

doit

Methods inherited from class java.lang.Object

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

Field Detail

DATA_ATTRIBUTE

public static final java.lang.String DATA_ATTRIBUTE

Name of the attribute used for unary operators "data"

See Also:

Constant Field Values

Constructor Detail

BaseUnaryOperator

public BaseUnaryOperator()

Method Detail

doOperator

protected abstract java.lang.Object doOperator(java.lang.Object a)
                                        throws SmartFrogCompileResolutionException

The method to implement the functionality of any operator.

Parameters:

a - Object 1 for operator

Returns:

an Object

Throws:

SmartFrogCompileResolutionException

doFunction

protected java.lang.Object doFunction()
                               throws SmartFrogCompileResolutionException

Implements the functionality of base unary operator.

Specified by:

doFunction in class BaseFunction

Returns:

the result of applying the operator

Throws:

SmartFrogCompileResolutionException - if the attribute "data" does not exist or the operator throws the exception