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## Package org.apache.commons.collections.functors

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

See:
Description

Interface Summary
PredicateDecorator | Defines a predicate that decorates one or more other predicates.

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

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