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

# Class FacadeTaskHelper

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

public class FacadeTaskHelper extends 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(String defaultValue)`
  `FacadeTaskHelper(String defaultValue, String magicValue)`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `void`
  `addImplementationArgument(ImplementationSpecificArgument arg)`
  Command line argument.
  `String[]`
  `getArgs()`
  Retrieves the command line arguments enabled for the current facade implementation.
  `String`
  `getExplicitChoice()`
  Retrieves the explicit user choice.
  `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(String userChoice)`
  Used for explicit user choices.
  `void`
  `setMagicValue(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(String defaultValue)
    Parameters:
      `defaultValue` - The default value for the implementation. Must not be null.

  - ### FacadeTaskHelper

    public FacadeTaskHelper(String defaultValue, 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(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(String userChoice)
    Used for explicit user choices.
    Parameters:
      `userChoice` - the explicitly chosen implementation.

  - ### getImplementation

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

  - ### getExplicitChoice

    public 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 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