org.apache.tools.ant.types

## Class Reference

- java.lang.Object
- - org.apache.tools.ant.types.Reference

Direct Known Subclasses:
  Ant.Reference

    public class Reference
    extends java.lang.Object

Class to hold a reference to another object in the project.

### Constructor Summary

Constructors
Constructor and Description
`Reference()` Deprecated. since 1.7. Please use `Reference(Project,String)` instead.
`Reference(Project p, java.lang.String id)` Create a reference to a named ID in a particular project.
`Reference(java.lang.String id)` Deprecated. since 1.7. Please use `Reference(Project,String)` instead.

### Method Summary

Methods
`Project` `getProject()` Get the associated project, if any; may be null.
`java.lang.Object` `getReferencedObject()` Resolve the reference, looking in the associated project.
`java.lang.Object` `getReferencedObject(Project fallback)` Resolve the reference, using the associated project if it set, otherwise use the passed in project.
`java.lang.String` `getRefId()` Get the reference id of this reference.
`void` `setProject(Project p)` Set the associated project.
`void` `setRefId(java.lang.String id)` Set the reference id.

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

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

### Constructor Detail

#### Reference

    public Reference()

Deprecated. since 1.7. Please use `Reference(Project,String)` instead.
Create a reference.

#### Reference

    public Reference(java.lang.String id)

Deprecated. since 1.7. Please use `Reference(Project,String)` instead.
Create a reference to a named ID.

Parameters:
  `id` - the name of this reference

#### Reference

    public Reference(Project p,
             java.lang.String id)

Create a reference to a named ID in a particular project.

Parameters:
  `p` - the project this reference is associated with
  `id` - the name of this reference
Since:
  Ant 1.6.3

### Method Detail

#### setRefId

    public void setRefId(java.lang.String id)

Set the reference id. Should not normally be necessary; use `Reference(Project, String)`.

Parameters:
  `id` - the reference id to use

#### getRefId

    public java.lang.String getRefId()

Get the reference id of this reference.

Returns:
  the reference id

#### setProject

    public void setProject(Project p)

Set the associated project. Should not normally be necessary; use `Reference(Project,String)`.

Parameters:
  `p` - the project to use
Since:
  Ant 1.6.3

#### getProject

    public Project getProject()

Get the associated project, if any; may be null.

Returns:
  the associated project
Since:
  Ant 1.6.3

#### getReferencedObject

    public java.lang.Object getReferencedObject(Project fallback)
                                         throws BuildException

Resolve the reference, using the associated project if it set, otherwise use the passed in project.

Parameters:
  `fallback` - the fallback project to use if the project attribute of reference is not set.
Returns:
  the dereferenced object.
Throws:
  `BuildException` - if the reference cannot be dereferenced.

#### getReferencedObject

    public java.lang.Object getReferencedObject()
                                         throws BuildException

Resolve the reference, looking in the associated project.

Returns:
  the dereferenced object.
Throws:
  `BuildException` - if the project is null or the reference cannot be dereferenced
Since:
  Ant 1.6.3
See Also:
  `Project.getReference(java.lang.String)`