Package com.thoughtworks.paranamer

## Class PositionalParanamer

- java.lang.Object
- - com.thoughtworks.paranamer.PositionalParanamer

- All Implemented Interfaces:
    `Paranamer`

      public class PositionalParanamer
      extends Object
      implements Paranamer

  Paranamer that works on basis of the parameter position and can be used as last fallback of the `AdaptiveParanamer`.
  Author:
    Stefan Fleiter

- - ### Field Summary

    - ### Fields inherited from interface com.thoughtworks.paranamer.Paranamer

      `EMPTY_NAMES`

  - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `PositionalParanamer()` | Default Contstructor with prefix `arg`.
    `PositionalParanamer​(String prefix)` | Constructor that allows to override the prefix.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `String[]` | `lookupParameterNames​(AccessibleObject methodOrConstructor)` | Lookup the parameter names of a given method.
    `String[]` | `lookupParameterNames​(AccessibleObject methodOrCtor, boolean throwExceptionIfMissing)` | Lookup the parameter names of a given method.

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

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

- - ### Constructor Detail

    - #### PositionalParanamer

          public PositionalParanamer()

      Default Contstructor with prefix `arg`.

    - #### PositionalParanamer

          public PositionalParanamer​(String prefix)

      Constructor that allows to override the prefix.
      Parameters:
        `prefix` - string that is prepended before the position of the parameter.

  - ### Method Detail

    - #### lookupParameterNames

          public String[] lookupParameterNames​(AccessibleObject methodOrConstructor)

      Description copied from interface: `Paranamer`
      Lookup the parameter names of a given method.
      Specified by:
        `lookupParameterNames` in interface `Paranamer`
      Parameters:
        `methodOrConstructor` - the `Method` or `Constructor` for which the parameter names are looked up.
      Returns:
        A list of the parameter names.

    - #### lookupParameterNames

          public String[] lookupParameterNames​(AccessibleObject methodOrCtor,
                                               boolean throwExceptionIfMissing)

      Description copied from interface: `Paranamer`
      Lookup the parameter names of a given method.
      Specified by:
        `lookupParameterNames` in interface `Paranamer`
      Parameters:
        `methodOrCtor` - the `Method` or `Constructor` for which the parameter names are looked up.
        `throwExceptionIfMissing` - whether to throw an exception if no Paranamer data found (versus return null).
      Returns:
        A list of the parameter names.