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java.lang.Object org.apache.commons.collections.functors.UniquePredicate<T>
public final class UniquePredicate<T>
Predicate implementation that returns true the first time an object is passed into the predicate.
Constructor Summary | |
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UniquePredicate()
Constructor that performs no validation. |
Method Summary | ||
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boolean |
evaluate(T object)
Evaluates the predicate returning true if the input object hasn't been received yet. |
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static
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getInstance()
Factory to create the predicate. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public UniquePredicate()
getInstance
if you want that.
Method Detail |
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public static <T> Predicate<T> getInstance()
IllegalArgumentException
- if the predicate is nullpublic boolean evaluate(T object)
evaluate
in interface Predicate<T>
object
- the input object
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