Package org.apache.commons.collections.functors

package org.apache.commons.collections.functors

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

WARNING: from v3.2.2 onwards this several classes in this package will throw an

invalid reference

UnsupportedOperationException

when trying to serialize or de-serialize an instance to prevent potential remote code execution exploits.

Classes considered to be unsafe are:

• CloneTransformer
• ForClosure
• InstantiateFactory
• InstantiateTransformer
• InvokerTransformer
• PrototypeFactory$PrototypeCloneFactory
• PrototypeFactory$PrototypeSerializationFactory
• WhileClosure

In order to re-enable serialization support for these unsafe classes, the following system property can be used (via -Dproperty=true):

org.apache.commons.collections.enableUnsafeSerialization

Be warned though that enabling serialization support for these unsafe classes makes your application vulnerable to known exploits and you must ensure that your application does not de-serialize objects from untrusted sources.

Related Packages

Package	Description
org.apache.commons.collections	This package contains the interfaces and utilities shared across all the subpackages of this component.

Class	Description
AllPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
AndPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
AnyPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
ChainedClosure	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
ChainedTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
CloneTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
ClosureTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
ConstantFactory	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
ConstantTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
EqualPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
ExceptionClosure	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
ExceptionFactory	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
ExceptionPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
ExceptionTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
FactoryTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
FalsePredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
ForClosure	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
IdentityPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
IfClosure	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
InstanceofPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
InstantiateFactory	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
InstantiateTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
InvokerTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
MapTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
NonePredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
NOPClosure	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
NOPTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
NotNullPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
NotPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
NullIsExceptionPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
NullIsFalsePredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
NullIsTruePredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
NullPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
OnePredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
OrPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
PredicateDecorator	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
PredicateTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
PrototypeFactory	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
StringValueTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
SwitchClosure	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
SwitchTransformer	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
TransformedPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
TransformerClosure	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
TransformerPredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
TruePredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
UniquePredicate	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.
WhileClosure	Deprecated. Apache Commons Collections version 3.x is being deprecated from AEMaaCS.