| Package | Description |
|---|---|
| org.apache.commons.collections |
This package contains the interfaces and utilities shared across all the subpackages of this component.
|
| org.apache.commons.collections.functors |
This package contains implementations of the
Closure,
Predicate,
Transformer and
Factory interfaces. |
| org.apache.commons.collections.list |
This package contains implementations of the
List interface. |
| org.apache.commons.collections.map |
| Modifier and Type | Method and Description |
|---|---|
static Factory |
FactoryUtils.constantFactory(Object constantToReturn)
Creates a Factory that will return the same object each time the factory
is used.
|
static Factory |
FactoryUtils.exceptionFactory()
Gets a Factory that always throws an exception.
|
static Factory |
FactoryUtils.instantiateFactory(Class classToInstantiate)
Creates a Factory that can create objects of a specific type using
a no-args constructor.
|
static Factory |
FactoryUtils.instantiateFactory(Class classToInstantiate,
Class[] paramTypes,
Object[] args)
Creates a Factory that can create objects of a specific type using
the arguments specified to this method.
|
static Factory |
FactoryUtils.nullFactory()
Gets a Factory that will return null each time the factory is used.
|
static Factory |
FactoryUtils.prototypeFactory(Object prototype)
Creates a Factory that will return a clone of the same prototype object
each time the factory is used.
|
| Modifier and Type | Method and Description |
|---|---|
static Transformer |
TransformerUtils.asTransformer(Factory factory)
Creates a Transformer that calls a Factory each time the transformer is used.
|
static List |
ListUtils.lazyList(List list,
Factory factory)
Returns a "lazy" list whose elements will be created on demand.
|
static Map |
MapUtils.lazyMap(Map map,
Factory factory)
Returns a "lazy" map whose values will be created on demand.
|
static SortedMap |
MapUtils.lazySortedMap(SortedMap map,
Factory factory)
Returns a "lazy" sorted map whose values will be created on demand.
|
static Map |
MapUtils.multiValueMap(Map map,
Factory collectionFactory)
Creates a multi-value map backed by the given map which returns
collections created by the specified collection factory.
|
| Modifier and Type | Class and Description |
|---|---|
class |
ConstantFactory
Factory implementation that returns the same constant each time.
|
class |
ExceptionFactory
Factory implementation that always throws an exception.
|
class |
InstantiateFactory
Factory implementation that creates a new object instance by reflection.
|
| Modifier and Type | Field and Description |
|---|---|
static Factory |
ExceptionFactory.INSTANCE
Singleton predicate instance
|
static Factory |
ConstantFactory.NULL_INSTANCE
Returns null each time
|
| Modifier and Type | Method and Description |
|---|---|
Factory |
FactoryTransformer.getFactory()
Gets the factory.
|
static Factory |
ExceptionFactory.getInstance()
Factory returning the singleton instance.
|
static Factory |
InstantiateFactory.getInstance(Class classToInstantiate,
Class[] paramTypes,
Object[] args)
Factory method that performs validation.
|
static Factory |
ConstantFactory.getInstance(Object constantToReturn)
Factory method that performs validation.
|
static Factory |
PrototypeFactory.getInstance(Object prototype)
Factory method that performs validation.
|
| Modifier and Type | Method and Description |
|---|---|
static Transformer |
FactoryTransformer.getInstance(Factory factory)
Factory method that performs validation.
|
| Constructor and Description |
|---|
FactoryTransformer(Factory factory)
Constructor that performs no validation.
|
| Modifier and Type | Field and Description |
|---|---|
protected Factory |
LazyList.factory
The factory to use to lazily instantiate the objects
|
| Modifier and Type | Method and Description |
|---|---|
static List |
LazyList.decorate(List list,
Factory factory)
Factory method to create a lazily instantiating list.
|
| Constructor and Description |
|---|
LazyList(List list,
Factory factory)
Constructor that wraps (not copies).
|
| Modifier and Type | Method and Description |
|---|---|
static Map |
DefaultedMap.decorate(Map map,
Factory factory)
Factory method to create a defaulting map.
|
static Map |
LazyMap.decorate(Map map,
Factory factory)
Factory method to create a lazily instantiated map.
|
static MultiValueMap |
MultiValueMap.decorate(Map map,
Factory collectionFactory)
Creates a map which decorates the given
map and
creates the value collections using the supplied collectionFactory. |
static SortedMap |
LazySortedMap.decorate(SortedMap map,
Factory factory)
Factory method to create a lazily instantiated sorted map.
|
| Constructor and Description |
|---|
LazyMap(Map map,
Factory factory)
Constructor that wraps (not copies).
|
LazySortedMap(SortedMap map,
Factory factory)
Constructor that wraps (not copies).
|
MultiValueMap(Map map,
Factory collectionFactory)
Creates a MultiValueMap which decorates the given
map and
creates the value collections using the supplied collectionFactory. |
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