Package org.apache.tools.ant.util.facade

# Class FacadeTaskHelper

java.lang.Object
org.apache.tools.ant.util.facade.FacadeTaskHelper

    public class FacadeTaskHelper
    extends java.lang.Object

Helper class for facade implementations - encapsulates treatment of explicit implementation choices, magic properties and implementation specific command line arguments.

Since:
  Ant 1.5

- ## Constructor Summary

  Constructors
  Constructor | Description
  --- | ---
  `FacadeTaskHelper​(java.lang.String defaultValue)` |
  `FacadeTaskHelper​(java.lang.String defaultValue, java.lang.String magicValue)` |

- ## Method Summary

  Modifier and Type | Method | Description
  --- | --- | ---
  `void` | `addImplementationArgument​(ImplementationSpecificArgument arg)` | Command line argument.
  `java.lang.String[]` | `getArgs()` | Retrieves the command line arguments enabled for the current facade implementation.
  `java.lang.String` | `getExplicitChoice()` | Retrieves the explicit user choice.
  `java.lang.String` | `getImplementation()` | Retrieves the implementation.
  `Path` | `getImplementationClasspath​(Project project)` | The classpath to use when loading the implementation.
  `boolean` | `hasBeenSet()` | Tests whether the implementation has been chosen by the user (either via a magic property or explicitly.
  `void` | `setImplementation​(java.lang.String userChoice)` | Used for explicit user choices.
  `void` | `setMagicValue​(java.lang.String magicValue)` | Used to set the value of the magic property.

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

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

- ## Constructor Details

  - ### FacadeTaskHelper

    public FacadeTaskHelper​(java.lang.String defaultValue)
    Parameters:
      `defaultValue` - The default value for the implementation. Must not be null.

  - ### FacadeTaskHelper

    public FacadeTaskHelper​(java.lang.String defaultValue, java.lang.String magicValue)
    Parameters:
      `defaultValue` - The default value for the implementation. Must not be null.
      `magicValue` - the value of a magic property that may hold a user. choice. May be null.

- ## Method Details

  - ### setMagicValue

    public void setMagicValue​(java.lang.String magicValue)
    Used to set the value of the magic property.
    Parameters:
      `magicValue` - the value of a magic property that may hold a user.

  - ### setImplementation

    public void setImplementation​(java.lang.String userChoice)
    Used for explicit user choices.
    Parameters:
      `userChoice` - the explicitly chosen implementation.

  - ### getImplementation

    public java.lang.String getImplementation()
    Retrieves the implementation.
    Returns:
      the implementation.

  - ### getExplicitChoice

    public java.lang.String getExplicitChoice()
    Retrieves the explicit user choice.
    Returns:
      the explicit user choice.

  - ### addImplementationArgument

    public void addImplementationArgument​(ImplementationSpecificArgument arg)
    Command line argument.
    Parameters:
      `arg` - an argument to add.

  - ### getArgs

    public java.lang.String[] getArgs()
    Retrieves the command line arguments enabled for the current facade implementation.
    Returns:
      an array of command line arguments.

  - ### hasBeenSet

    public boolean hasBeenSet()
    Tests whether the implementation has been chosen by the user (either via a magic property or explicitly.
    Returns:
      true if magic or user choice has be set.
    Since:
      Ant 1.5.2

  - ### getImplementationClasspath

    public Path getImplementationClasspath​(Project project)
    The classpath to use when loading the implementation.
    Parameters:
      `project` - the current project
    Returns:
      a Path instance that may be appended to
    Since:
      Ant 1.8.0