Package org.apache.commons.collections.functors

This package contains implementations of the Closure, Predicate, Transformer and Factory interfaces.

See:
Description

Interface Summary

PredicateDecorator<T>

Defines a predicate that decorates one or more other predicates.

Class Summary

AllPredicate<T>	Predicate implementation that returns true if all the predicates return true.
AndPredicate<T>	Predicate implementation that returns true if both the predicates return true.
AnyPredicate<T>	Predicate implementation that returns true if any of the predicates return true.
ChainedClosure<T>	Closure implementation that chains the specified closures together.
ChainedTransformer<I,O>	Transformer implementation that chains the specified transformers together.
CloneTransformer	Transformer implementation that returns a clone of the input object.
ClosureTransformer<T>	Transformer implementation that calls a Closure using the input object and then returns the input.
ConstantFactory<T>	Factory implementation that returns the same constant each time.
ConstantTransformer<T>	Transformer implementation that returns the same constant each time.
EqualPredicate<T>	Predicate implementation that returns true if the input is the same object as the one stored in this predicate by equals.
ExceptionClosure<T>	Closure implementation that always throws an exception.
ExceptionFactory<T>	Factory implementation that always throws an exception.
ExceptionPredicate<T>	Predicate implementation that always throws an exception.
ExceptionTransformer<I,O>	Transformer implementation that always throws an exception.
FactoryTransformer<T>	Transformer implementation that calls a Factory and returns the result.
FalsePredicate<T>	Predicate implementation that always returns false.
ForClosure<T>	Closure implementation that calls another closure n times, like a for loop.
IdentityPredicate<T>	Predicate implementation that returns true if the input is the same object as the one stored in this predicate.
IfClosure<T>	Closure implementation acts as an if statement calling one or other closure based on a predicate.
InstanceofPredicate<T>	Predicate implementation that returns true if the input is an instanceof the type stored in this predicate.
InstantiateFactory<T>	Factory implementation that creates a new object instance by reflection.
InstantiateTransformer	Transformer implementation that creates a new object instance by reflection.
InvokerTransformer	Transformer implementation that creates a new object instance by reflection.
MapTransformer<I,O>	Transformer implementation that returns the value held in a specified map using the input parameter as a key.
NonePredicate<T>	Predicate implementation that returns true if none of the predicates return true.
NOPClosure<T>	Closure implementation that does nothing.
NOPTransformer<I>	Transformer implementation that does nothing.
NotNullPredicate<T>	Predicate implementation that returns true if the input is not null.
NotPredicate<T>	Predicate implementation that returns the opposite of the decorated predicate.
NullIsExceptionPredicate<T>	Predicate implementation that throws an exception if the input is null.
NullIsFalsePredicate<T>	Predicate implementation that returns false if the input is null.
NullIsTruePredicate<T>	Predicate implementation that returns true if the input is null.
NullPredicate<T>	Predicate implementation that returns true if the input is null.
OnePredicate<T>	Predicate implementation that returns true if only one of the predicates return true.
OrPredicate<T>	Predicate implementation that returns true if either of the predicates return true.
PredicateTransformer<T>	Transformer implementation that calls a Predicate using the input object and then returns the input.
PrototypeFactory<T>	Factory implementation that creates a new instance each time based on a prototype.
StringValueTransformer<T>	Transformer implementation that returns the String.valueOf.
SwitchClosure<T>	Closure implementation calls the closure whose predicate returns true, like a switch statement.
SwitchTransformer<I,O>	Transformer implementation calls the transformer whose predicate returns true, like a switch statement.
TransformedPredicate<I,O>	Predicate implementation that transforms the given object before invoking another Predicate.
TransformerClosure<I,O>	Closure implementation that calls a Transformer using the input object and ignore the result.
TransformerPredicate<T>	Predicate implementation that returns the result of a transformer.
TruePredicate<T>	Predicate implementation that always returns true.
UniquePredicate<T>	Predicate implementation that returns true the first time an object is passed into the predicate.
WhileClosure<T>	Closure implementation that executes a closure repeatedly until a condition is met, like a do-while or while loop.

Package org.apache.commons.collections.functors Description

This package contains implementations of the Closure, Predicate, Transformer and Factory interfaces. These provide simple callbacks for processing with collections.