TransformerPredicate

org.apache.commons.collections4.functors

Class TransformerPredicate<T>

java.lang.Object
- org.apache.commons.collections4.functors.TransformerPredicate<T>

All Implemented Interfaces:

Serializable, Predicate<T>
```
public final class TransformerPredicate<T>
extends Object
implements Predicate<T>, Serializable
```
Predicate implementation that returns the result of a transformer.

Since:

3.0

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
`TransformerPredicate(Transformer<? super T,Boolean> transformer)` Constructor that performs no validation.

Method Summary

All Methods

Static Methods

Instance Methods

Concrete Methods
Modifier and Type	Method and Description
`boolean`	`evaluate(T object)` Evaluates the predicate returning the result of the decorated transformer.
`Transformer<? super T,Boolean>`	`getTransformer()` Gets the transformer.
`static <T> Predicate<T>`	`transformerPredicate(Transformer<? super T,Boolean> transformer)` Factory to create the predicate.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - TransformerPredicate
```
public TransformerPredicate(Transformer<? super T,Boolean> transformer)
```
    Constructor that performs no validation. Use transformerPredicate if you want that.
    
    Parameters:
    
    transformer - the transformer to decorate
- Method Detail
  - transformerPredicate
```
public static <T> Predicate<T> transformerPredicate(Transformer<? super T,Boolean> transformer)
```
    Factory to create the predicate.
    
    Type Parameters:
    
    T - the type that the predicate queries
    
    Parameters:
    
    transformer - the transformer to decorate
    
    Returns:
    
    the predicate
    
    Throws:
    
    NullPointerException - if the transformer is null
  - evaluate
```
public boolean evaluate(T object)
```
    Evaluates the predicate returning the result of the decorated transformer.
    
    Specified by:
    
    evaluate in interface Predicate<T>
    
    Parameters:
    
    object - the input object
    
    Returns:
    
    true if decorated transformer returns Boolean.TRUE
    
    Throws:
    
    FunctorException - if the transformer returns an invalid type
  - getTransformer
```
public Transformer<? super T,Boolean> getTransformer()
```
    Gets the transformer.
    
    Returns:
    
    the transformer
    
    Since:
    
    3.1