Target (Apache Ant API)
Keywords: org.apache.tools.ant.Target class

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## org.apache.tools.ant
Class Target

    java.lang.Object
      org.apache.tools.ant.Target

All Implemented Interfaces:
  TaskContainer

public class Target
extends java.lang.Object
implements TaskContainer

Class to implement a target object with required parameters.

Author:
  James Davidson duncan@x180.com

Constructor Summary
`Target()` Sole constructor.

Method Summary
`void` | `addDataType(RuntimeConfigurable r)` Adds the wrapper for a data type element to this target.
`void` | `addDependency(java.lang.String dependency)` Adds a dependency to this target.
`void` | `addTask(Task task)` Adds a task to this target.
`void` | `execute()` Executes the target if the "if" and "unless" conditions are satisfied.
`java.util.Enumeration` | `getDependencies()` Returns an enumeration of the dependencies of this target.
`java.lang.String` | `getDescription()` Returns the description of this target.
`java.lang.String` | `getName()` Returns the name of this target.
`Project` | `getProject()` Returns the project this target belongs to.
`Task[]` | `getTasks()` Returns the current set of tasks to be executed by this target.
`void` | `performTasks()` Performs the tasks within this target (if the conditions are met), firing target started/target finished messages around a call to execute.
`void` | `setDepends(java.lang.String depS)` Sets the list of targets this target is dependent on.
`void` | `setDescription(java.lang.String description)` Sets the description of this target.
`void` | `setIf(java.lang.String property)` Sets the "if" condition to test on execution.
`void` | `setName(java.lang.String name)` Sets the name of this target.
`void` | `setProject(Project project)` Sets the project this target belongs to.
`void` | `setUnless(java.lang.String property)` Sets the "unless" condition to test on execution.
`java.lang.String` | `toString()` Returns the name of this target.

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

Constructor Detail

### Target

    public Target()

  Sole constructor.

Method Detail

### setProject

    public void setProject(Project project)

  Sets the project this target belongs to.

  Parameters:
    `project` - The project this target belongs to. Must not be `null`.

### getProject

    public Project getProject()

  Returns the project this target belongs to.

  Returns:
    The project this target belongs to, or `null` if the project has not been set yet.

### setDepends

    public void setDepends(java.lang.String depS)

  Sets the list of targets this target is dependent on. The targets themselves are not resolved at this time.

  Parameters:
    `depS` - A comma-separated list of targets this target depends on. Must not be `null`.

### setName

    public void setName(java.lang.String name)

  Sets the name of this target.

  Parameters:
    `name` - The name of this target. Should not be `null`.

### getName

    public java.lang.String getName()

  Returns the name of this target.

  Returns:
    the name of this target, or `null` if the name has not been set yet.

### addTask

    public void addTask(Task task)

  Adds a task to this target.

  Specified by:
    `addTask` in interface `TaskContainer`
  Parameters:
    `task` - The task to be added. Must not be `null`.

### addDataType

    public void addDataType(RuntimeConfigurable r)

  Adds the wrapper for a data type element to this target.

  Parameters:
    `r` - The wrapper for the data type element to be added. Must not be `null`.

### getTasks

    public Task[] getTasks()

  Returns the current set of tasks to be executed by this target.

  Returns:
    an array of the tasks currently within this target

### addDependency

    public void addDependency(java.lang.String dependency)

  Adds a dependency to this target.

  Parameters:
    `dependency` - The name of a target this target is dependent on. Must not be `null`.

### getDependencies

    public java.util.Enumeration getDependencies()

  Returns an enumeration of the dependencies of this target.

  Returns:
    an enumeration of the dependencies of this target

### setIf

    public void setIf(java.lang.String property)

  Sets the "if" condition to test on execution. This is the name of a property to test for existence - if the property is not set, the task will not execute. The property goes through property substitution once before testing, so if property `foo` has value `bar`, setting the "if" condition to `${foo}_x` will mean that the task will only execute if property `bar_x` is set.

  Parameters:
    `property` - The property condition to test on execution. May be `null`, in which case no "if" test is performed.

### setUnless

    public void setUnless(java.lang.String property)

  Sets the "unless" condition to test on execution. This is the name of a property to test for existence - if the property is set, the task will not execute. The property goes through property substitution once before testing, so if property `foo` has value `bar`, setting the "unless" condition to `${foo}_x` will mean that the task will only execute if property `bar_x` isn't set.

  Parameters:
    `property` - The property condition to test on execution. May be `null`, in which case no "unless" test is performed.

### setDescription

    public void setDescription(java.lang.String description)

  Sets the description of this target.

  Parameters:
    `description` - The description for this target. May be `null`, indicating that no description is available.

### getDescription

    public java.lang.String getDescription()

  Returns the description of this target.

  Returns:
    the description of this target, or `null` if no description is available.

### toString

    public java.lang.String toString()

  Returns the name of this target.

  Returns:
    the name of this target, or `null` if the name has not been set yet.

### execute

    public void execute()
                 throws BuildException

  Executes the target if the "if" and "unless" conditions are satisfied. Dependency checking should be done before calling this method, as it does no checking of its own. If either the "if" or "unless" test prevents this target from being executed, a verbose message is logged giving the reason. It is recommended that clients of this class call performTasks rather than this method so that appropriate build events are fired.

  Throws:
    `BuildException` - if any of the tasks fail or if a data type configuration fails.
  See Also:
    `performTasks()`, `setIf(String)`, `setUnless(String)`

### performTasks

    public final void performTasks()

  Performs the tasks within this target (if the conditions are met), firing target started/target finished messages around a call to execute.

  See Also:
    `execute()`

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