Whichresource

Description

Find a class or resource on the supplied classpath, or the system classpath if none is supplied. The named property is set if the item can be found. For example:

  <whichresource resource="/log4j.properties" property="log4j.url" >

Parameters

Attribute	Description	Required
property	The property to fill with the URL of the resource of class.	Yes
class	The name of the class to look for.	Exactly one of these.
resource	The name of the resource to look for.
classpath	The classpath to use when looking up class or resource.	No
classpathref	The classpath to use, given as a reference to a path defined elsewhere. Since Apache Ant 1.7.1.	No

Parameters specified as nested elements

classpath

Whichresource's classpath attribute is a path-like structure and can also be set via a nested <classpath> element.

Examples

The following shows using a classpath reference.

  <path id="bsf.classpath">
    <fileset dir="${user.home}/lang/bsf" includes="*.jar"/>
  </path>
  <whichresource property="bsf.class.location"
                 class="org.apache.bsf.BSFManager"
                 classpathref="bsf.classpath"/>
  <echo>${bsf.class.location}</echo>

The following shows using a nested classpath.

  <whichresource
    property="ant-contrib.antlib.location"
    resource="net/sf/antcontrib/antlib.xml">
    <classpath>
      <path path="f:/testing/ant-contrib/target/ant-contrib.jar"/>
    </classpath>
  </whichresource>
  <echo>${ant-contrib.antlib.location}</echo>