public final class UniquePredicate extends java.lang.Object implements Predicate, java.io.Serializable
Modifier and Type | Field and Description |
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private java.util.Set |
iSet
The set of previously seen objects
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private static long |
serialVersionUID
Serial version UID
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Constructor and Description |
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UniquePredicate()
Constructor that performs no validation.
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Modifier and Type | Method and Description |
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boolean |
evaluate(java.lang.Object object)
Evaluates the predicate returning true if the input object hasn't been
received yet.
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static Predicate |
getInstance()
Factory to create the predicate.
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private static final long serialVersionUID
private final java.util.Set iSet
public UniquePredicate()
getInstance
if you want that.public static Predicate getInstance()
java.lang.IllegalArgumentException
- if the predicate is null