de.rwth.domains.templates
Class ComposedFunction
java.lang.Object
|
+--de.rwth.domains.templates.ComposedFunction
- All Implemented Interfaces:
- Function
- public class ComposedFunction
- extends java.lang.Object
- implements Function
Implements functions by composition of two functions.
- Version:
- $Id: ComposedFunction.java,v 1.2 2002/09/17 06:53:53 mohnen Exp $
- Author:
- Markus Mohnen
Field Summary |
protected Function |
f
The second function in this composition. |
protected Function |
g
The first function in this composition. |
Method Summary |
java.lang.Object |
apply(java.lang.Object x)
Applies this function to an argument and returns the result. |
boolean |
equals(java.lang.Object o)
|
Set |
getDomain()
Returns the domain of this function. |
Set |
getRange()
Returns the range (co-domain) of this function. |
static void |
main(java.lang.String[] args)
|
java.lang.String |
toString()
|
Methods inherited from class java.lang.Object |
clone, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
f
protected Function f
- The second function in this composition.
g
protected Function g
- The first function in this composition.
ComposedFunction
public ComposedFunction(Function f,
Function g)
throws java.lang.IllegalArgumentException
- Creates a new
ComposedFunction
instance. Read as "f
o
g
" in the usual mathematical sense: The resulting function applies
g
to an argument and subsequently f
to the result.
- Parameters:
f
- a Function
value: The second function.g
- a Function
value: The first function.- Throws:
java.lang.IllegalArgumentException
- if the range of g
is not the
domain of f
apply
public java.lang.Object apply(java.lang.Object x)
throws FunctionException
- Description copied from interface:
Function
- Applies this function to an argument and returns the result.
- Specified by:
apply
in interface Function
- Following copied from interface:
de.rwth.domains.Function
- Parameters:
x
- the argument- Returns:
- this function's value for argument
x
- Throws:
FunctionException
- if x
is not
an element of the
functions domain.
getDomain
public Set getDomain()
- Description copied from interface:
Function
- Returns the domain of this function.
- Specified by:
getDomain
in interface Function
- Following copied from interface:
de.rwth.domains.Function
- Returns:
- a value of type
Set
getRange
public Set getRange()
- Description copied from interface:
Function
- Returns the range (co-domain) of this function.
- Specified by:
getRange
in interface Function
- Following copied from interface:
de.rwth.domains.Function
- Returns:
- a value of type
Set
equals
public boolean equals(java.lang.Object o)
- Overrides:
equals
in class java.lang.Object
toString
public java.lang.String toString()
- Overrides:
toString
in class java.lang.Object
main
public static void main(java.lang.String[] args)