37 lines
1.2 KiB
Java
37 lines
1.2 KiB
Java
/**
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* Performs operations upon an input object which may modify that object and/or
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* external state (other objects).
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*
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* <p>All block implementations are expected to:
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* <ul>
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* <li>When used for aggregate operations upon many elements blocks
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* should not assume that the {@code apply} operation will be called upon
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* elements in any specific order.</li>
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* </ul>
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*
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* @param <T> The type of input objects to {@code apply}.
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*/
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public interface TBlock<T> {
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/**
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* Performs operations upon the provided object which may modify that object
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* and/or external state.
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*
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* @param t an input object
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*/
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void apply(T t);
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/**
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* Returns a Block which performs in sequence the {@code apply} methods of
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* multiple Blocks. This Block's {@code apply} method is performed followed
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* by the {@code apply} method of the specified Block operation.
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*
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* @param other an additional Block which will be chained after this Block
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* @return a Block which performs in sequence the {@code apply} method of
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* this Block and the {@code apply} method of the specified Block operation
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*/
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public default TBlock<T> chain(TBlock<? super T> other) {
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return (T t) -> { apply(t); other.apply(t); };
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}
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}
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