Class ChainedTransformer<T>
java.lang.Object
org.apache.commons.collections4.functors.ChainedTransformer<T>
- All Implemented Interfaces:
Serializable
,Transformer<T,
T>
Transformer implementation that chains the specified transformers together.
The input object is passed to the first transformer. The transformed result is passed to the second transformer and so on.
- Since:
- 3.0
- See Also:
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Constructor Summary
ConstructorDescriptionChainedTransformer
(Transformer<? super T, ? extends T>... transformers) Constructor that performs no validation. -
Method Summary
Modifier and TypeMethodDescriptionstatic <T> Transformer<T,
T> chainedTransformer
(Collection<? extends Transformer<? super T, ? extends T>> transformers) Create a new Transformer that calls each transformer in turn, passing the result into the next transformer.static <T> Transformer<T,
T> chainedTransformer
(Transformer<? super T, ? extends T>... transformers) Factory method that performs validation and copies the parameter array.Transformer<? super T,
? extends T>[] Gets the transformers.Transforms the input to result via each decorated transformer
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Constructor Details
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ChainedTransformer
Constructor that performs no validation. UsechainedTransformer
if you want that.- Parameters:
transformers
- the transformers to chain, copied, no nulls
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Method Details
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chainedTransformer
public static <T> Transformer<T,T> chainedTransformer(Collection<? extends Transformer<? super T, ? extends T>> transformers) Create a new Transformer that calls each transformer in turn, passing the result into the next transformer. The ordering is that of the iterator() method on the collection.- Type Parameters:
T
- the object type- Parameters:
transformers
- a collection of transformers to chain- Returns:
- the
chained
transformer - Throws:
NullPointerException
- if the transformers collection is nullNullPointerException
- if any transformer in the collection is null
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chainedTransformer
public static <T> Transformer<T,T> chainedTransformer(Transformer<? super T, ? extends T>... transformers) Factory method that performs validation and copies the parameter array.- Type Parameters:
T
- the object type- Parameters:
transformers
- the transformers to chain, copied, no nulls- Returns:
- the
chained
transformer - Throws:
NullPointerException
- if the transformers array is nullNullPointerException
- if any transformer in the array is null
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getTransformers
Gets the transformers.- Returns:
- a copy of the transformers
- Since:
- 3.1
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transform
Transforms the input to result via each decorated transformer- Specified by:
transform
in interfaceTransformer<T,
T> - Parameters:
object
- the input object passed to the first transformer- Returns:
- the transformed result
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