Package org.eclipse.rdf4j.query.algebra.evaluation.function

## Class UnaryFunction

- java.lang.Object
- - org.eclipse.rdf4j.query.algebra.evaluation.function.UnaryFunction

- All Implemented Interfaces:
    `Function`
  Direct Known Subclasses:
    `IsValidURI`, `Localname`, `Not`, `TimeMillis`, `Trim`, `UnCamelCase`

      public abstract class UnaryFunction
      extends Object
      implements Function

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `UnaryFunction()` |

  - ### Method Summary

    All Methods Instance Methods Abstract Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `protected abstract Value` | `evaluate​(ValueFactory valueFactory, Value arg)` |
    `Value` | `evaluate​(ValueFactory valueFactory, Value... args)` | Evaluate the function over the supplied input arguments, using the supplied `ValueFactory` to produce the result.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

    - ### Methods inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.function.Function

      `evaluate, getURI, mustReturnDifferentResult`

- - ### Constructor Detail

    - #### UnaryFunction

          public UnaryFunction()

  - ### Method Detail

    - #### evaluate

          public Value evaluate​(ValueFactory valueFactory,
                                Value... args)
                         throws ValueExprEvaluationException

      Description copied from interface: `Function`
      Evaluate the function over the supplied input arguments, using the supplied `ValueFactory` to produce the result.
      Specified by:
        `evaluate` in interface `Function`
      Parameters:
        `valueFactory` - a `ValueFactory` to use for producing the function result.
        `args` - the function input arguments.
      Returns:
        the function result value.
      Throws:
        `ValueExprEvaluationException`

    - #### evaluate

          protected abstract Value evaluate​(ValueFactory valueFactory,
                                            Value arg)
                                     throws ValueExprEvaluationException

      Throws:
        `ValueExprEvaluationException`