|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||
java.lang.Objectorg.apache.commons.collections15.functors.SwitchTransformer<I,O>
public class SwitchTransformer<I,O>
Transformer implementation calls the transformer whose predicate returns true, like a switch statement.
| Constructor Summary | |
|---|---|
SwitchTransformer(Predicate<? super I>[] predicates,
Transformer<? super I,? extends O>[] transformers,
Transformer<? super I,? extends O> defaultTransformer)
Constructor that performs no validation. |
|
| Method Summary | ||
|---|---|---|
Transformer<? super I,? extends O> |
getDefaultTransformer()
Gets the default transformer. |
|
static
|
getInstance(Map<Predicate<? super I>,Transformer<? super I,? extends O>> predicatesAndTransformers)
Create a new Transformer that calls one of the transformers depending on the predicates. |
|
static
|
getInstance(Predicate<? super I>[] predicates,
Transformer<? super I,? extends O>[] transformers,
Transformer<? super I,? extends O> defaultTransformer)
Factory method that performs validation and copies the parameter arrays. |
|
Predicate<? super I>[] |
getPredicates()
Gets the predicates, do not modify the array. |
|
Transformer<? super I,? extends O>[] |
getTransformers()
Gets the transformers, do not modify the array. |
|
O |
transform(I input)
Transforms the input to result by calling the transformer whose matching predicate returns true. |
|
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public SwitchTransformer(Predicate<? super I>[] predicates,
Transformer<? super I,? extends O>[] transformers,
Transformer<? super I,? extends O> defaultTransformer)
getInstance if you want that.
predicates - array of predicates, not cloned, no nullstransformers - matching array of transformers, not cloned, no nullsdefaultTransformer - the transformer to use if no match, null means nop| Method Detail |
|---|
public static <I,O> Transformer<I,O> getInstance(Predicate<? super I>[] predicates,
Transformer<? super I,? extends O>[] transformers,
Transformer<? super I,? extends O> defaultTransformer)
predicates - array of predicates, cloned, no nullstransformers - matching array of transformers, cloned, no nullsdefaultTransformer - the transformer to use if no match, null means nop
chained transformer
IllegalArgumentException - if array is null
IllegalArgumentException - if any element in the array is nullpublic static <I,O> Transformer<I,O> getInstance(Map<Predicate<? super I>,Transformer<? super I,? extends O>> predicatesAndTransformers)
predicatesAndTransformers - a map of predicates to transformers
switch transformer
IllegalArgumentException - if the map is null
IllegalArgumentException - if any transformer in the map is null
ClassCastException - if the map elements are of the wrong typepublic O transform(I input)
transform in interface Transformer<I,O>input - the input object to transform
public Predicate<? super I>[] getPredicates()
public Transformer<? super I,? extends O>[] getTransformers()
public Transformer<? super I,? extends O> getDefaultTransformer()
|
||||||||||
| PREV CLASS NEXT CLASS | FRAMES NO FRAMES | |||||||||
| SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD | |||||||||