Build a sub-project.

  <target name="foo" depends="init">
    <ant antfile="build.xml" target="bar" >
      <property name="property1" value="aaaaa" />
      <property name="foo" value="baz" />
    </ant>
  </target>

  <target name="bar" depends="init">
    <echo message="prop is ${property1} ${foo}" />
  </target>
 

<reference>

Helper class that implements the nested <reference> element of <ant> and <antcall>.

Attribute	Description	Type	Required
torefid	Set the id that this reference to be stored under in the new project.	String	?
refid		String	?

<propertyset> ...

A set of properties.

Attribute	Description	Type	Required
refid	Sets the value of the refid attribute.	Reference	?
dynamic	Set whether to reevaluate the set everytime the set is used. Default is true.	boolean	?
negate	Set whether to negate results. If "true", all properties not selected by nested elements will be returned. Default is "false".	boolean	?

<property> ...

Sets a property by name, or set of properties (from file or resource) in the project.

Properties are immutable: whoever sets a property first freezes it for the rest of the build; they are most definitely not variable.

There are five ways to set properties:

• By supplying both the name and value attribute.
• By supplying both the name and refid attribute.
• By setting the file attribute with the filename of the property file to load. This property file has the format as defined by the file used in the class java.util.Properties.
• By setting the resource attribute with the resource name of the property file to load. This property file has the format as defined by the file used in the class java.util.Properties.
• By setting the environment attribute with a prefix to use. Properties will be defined for every environment variable by prefixing the supplied name and a period to the name of the variable.

Although combinations of these ways are possible, only one should be used at a time. Problems might occur with the order in which properties are set, for instance.

The value part of the properties being set, might contain references to other properties. These references are resolved at the time these properties are set. This also holds for properties loaded from a property file.

Properties are case sensitive.

Attribute	Description	Type	Required
refid	Sets a reference to an Ant datatype declared elsewhere. Only yields reasonable results for references PATH like structures or properties.	Reference	?
url	The url from which to load properties.	URL	?
name	The name of the property to set.	String	?
classpath	The classpath to use when looking up a resource.	Path	?
userproperty		boolean	?
file	Filename of a property file to load.	File	?
resource	The resource name of a property file to load	String	?
environment	Prefix to use when retrieving environment variables. Thus if you specify environment="myenv" you will be able to access OS-specific environment variables via property names "myenv.PATH" or "myenv.TERM". Note that if you supply a property name with a final "." it will not be doubled. ie environment="myenv." will still allow access of environment variables through "myenv.PATH" and "myenv.TERM". This functionality is currently only implemented on select platforms. Feel free to send patches to increase the number of platforms this functionality is supported on ;). Note also that properties are case sensitive, even if the environment variables on your operating system are not, e.g. it will be ${env.Path} not ${env.PATH} on Windows 2000.	String	?
prefix	Prefix to apply to properties loaded using file or resource. A "." is appended to the prefix if not specified.	String	?
classpathref	the classpath to use when looking up a resource, given as reference to a <path> defined elsewhere	Reference	?
value	The value of the property.	String	?

<target>

Helper class that implements the nested <target> element of <ant> and <antcall>.

Attribute	Description	Type	Required
name	Set the name of this TargetElement.	String	?