Split organization name into nested folders using ivy:retrieve - ant

Question

In ivy I can set a retrieve pattern in order to copy all my dependencies somewhere I want to.
For example:
<ivy:retrieve pattern="${local-maven2-dir}/[organisation]/[module]/[revision]/[module]-[revision].[ext]" conf="compile" type="jar,bundle" sync="true"/>
I wonder is it possible to treat organization not as a folder, but as a set of nested folders, and keep in deepest folder (which is revision) the jar package, just like jars are stored in maven default repo.
So, basically I want to have jars located in paths like
com/yahoo/platform/yui/yuicompressor/2.4.7
and not like
com.yahoo.platform.yui/yuicompressor/2.4.7
PS: involving groovy scripting counts as a valid solution as well, it's just that I have no idea how can groovy be involved here.

Answer 1

Actually, it's quite easy and already documented in Ivy (look near the bottom of the page). You can use [orgPath]:
<ivy:retrieve conf="compile"
type="jar,bundle"
sync="true"
pattern="${local-maven2-dir}/[orgPath]/[module]-[revision].[ext]"/>

Answer 2

The following example uses groovy.
David W. offers a far simpler solution, relying on a new "orgPath" pattern token introduced in ivy 2.3.
Example
Produces the following output
├── build
│   ├── com
│   │   └── yahoo
│   │   └── platform
│   │   └── yui
│   │   └── yuicompressor
│   │   └── 2.4.7
│   │   └── yuicompressor-2.4.7.jar
│   └── rhino
│   └── js
│   └── 1.6R7
│   └── js-1.6R7.jar
├── build.xml
└── ivy.xml
build.xml
<project name="demo" default="retrieve" xmlns:ivy="antlib:org.apache.ivy.ant">
<target name="resolve">
<ivy:resolve/>
<ivy:cachepath pathid="build.path" conf="build"/>
</target>
<target name="retrieve" depends="resolve">
<taskdef name="groovy" classname="org.codehaus.groovy.ant.Groovy" classpathref="build.path"/>
<ivy:artifactproperty conf="compile" name="index.[module].[artifact]" value="[module].[artifact]"/>
<ivy:artifactproperty conf="compile" name="[module].[artifact].organisation" value="[organisation]"/>
<ivy:artifactproperty conf="compile" name="[module].[artifact].module" value="[module]"/>
<ivy:artifactproperty conf="compile" name="[module].[artifact].artifact" value="[artifact]"/>
<ivy:artifactproperty conf="compile" name="[module].[artifact].revision" value="[revision]"/>
<ivy:artifactproperty conf="compile" name="[module].[artifact].ext" value="[ext]"/>
<ivy:artifactproperty conf="compile" name="[module].[artifact].cachefile" value="${ivy.cache.dir}/[organisation]/[module]/jars/[artifact]-[revision].[ext]"/>
<groovy>
modules = properties.findAll { it.toString().startsWith("index.") }
modules.each { key, value ->
def organisation = properties[value+".organisation"].replace(".","/")
def module = properties[value+".module"]
def artifact = properties[value+".artifact"]
def revision = properties[value+".revision"]
def ext = properties[value+".ext"]
def cachefile = properties[value+".cachefile"]
ant.copy(file:cachefile, tofile:"build/${organisation}/${module}/${revision}/${artifact}-${revision}.${ext}")
}
</groovy>
</target>
</project>
ivy.xml
<ivy-module version="2.0">
<info organisation="com.myspotontheweb" module="demo"/>
<configurations>
<conf name="build" description="Build dependencies"/>
<conf name="compile" description="Compile classpath"/>
</configurations>
<dependencies>
<!-- build dependencies -->
<dependency org="org.codehaus.groovy" name="groovy-all" rev="2.1.1" conf="build->default"/>
<!-- compile dependencies -->
<dependency org="com.yahoo.platform.yui" name="yuicompressor" rev="2.4.7" conf="compile->default"/>
</dependencies>
</ivy-module>