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java.lang.Object org.apache.commons.functor.core.composite.ConditionalUnaryFunction<A,T>
public final class ConditionalUnaryFunction<A,T>
A UnaryFunction
similiar to Java's "ternary"
or "conditional" operator (? :
).
Given a predicate
p and functions
f and g, evalautes
to
p.test(x) ? f.evaluate(x) : g.evaluate(x)
.
Note that although this class implements
Serializable
, a given instance will
only be truly Serializable
if all the
underlying functors are. Attempts to serialize
an instance whose delegates are not all
Serializable
will result in an exception.
Constructor Summary | |
---|---|
ConditionalUnaryFunction(UnaryPredicate<? super A> ifPred,
UnaryFunction<? super A,? extends T> thenFunc,
UnaryFunction<? super A,? extends T> elseFunc)
Create a new ConditionalUnaryFunction. |
Method Summary | |
---|---|
boolean |
equals(ConditionalUnaryFunction<?,?> that)
Learn whether another ConditionalUnaryFunction is equal to this. |
boolean |
equals(Object that)
Indicates whether some other object is "equal to" this functor. |
T |
evaluate(A obj)
Evaluate this function. |
int |
hashCode()
Returns a hash code for this functor adhering to the general Object.hashCode contract. |
String |
toString()
Returns a human readable description of this functor. |
Methods inherited from class java.lang.Object |
---|
clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public ConditionalUnaryFunction(UnaryPredicate<? super A> ifPred, UnaryFunction<? super A,? extends T> thenFunc, UnaryFunction<? super A,? extends T> elseFunc)
ifPred
- ifthenFunc
- thenelseFunc
- elseMethod Detail |
---|
public T evaluate(A obj)
evaluate
in interface UnaryFunction<A,T>
obj
- the A object to evaluate
public boolean equals(Object that)
Object.equals
contract.
Additionally, this method can return
true only if the specified Object implements
the same functor interface and is known to produce the same
results and/or side-effects for the same arguments (if any).
While implementators are strongly encouraged to override
the default Object implementation of this method,
note that the default Object implementation
does in fact adhere to the functor equals
contract.
equals
in interface Functor
equals
in class Object
that
- the object to compare this functor to
true
iff the given object implements
this functor interface, and is known to produce the same
results and/or side-effects for the same arguments
(if any).Functor.hashCode()
public boolean equals(ConditionalUnaryFunction<?,?> that)
that
- ConditionalUnaryFunction to test
public int hashCode()
Object.hashCode
contract.
Implementators are strongly encouraged but not
strictly required to override the default Object
implementation of this method.
hashCode
in interface Functor
hashCode
in class Object
Functor.equals(java.lang.Object)
public String toString()
Object
implementation of this method.
toString
in interface Functor
toString
in class Object
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