Graph Task
Description
The graph task is a utility task used to construct an encoded state graph description as a reusable artifact.
Attributes
dest | Optional attribute used to override the output file. If not declared the task will produce a deliverable artifact of of the type state containing an XML encoded state graph. |
Nested Elements
trigger | An initialization or termination trigger. |
state | A nested state. |
transition | A state transition. |
operation | A management operation. |
Example
<project name="standalone-graph-example" default="install" xmlns:transit="antlib:dpml.tools.transit" xmlns:x="dpml:depot" xmlns:c="dpml:metro"> <transit:import uri="local:template:dpml/depot/standard"/> <target name="build" depends="standard.build"> <x:plugin uri="link:plugin:dpml/metro/dpml-metro-tools"/> <c:graph> <trigger event="initialization"> <transition name="startup" target="started"> <operation method="start"/> </transition> </trigger> <state name="started"> <trigger event="termination"> <apply id="stop"/> </trigger> <transition name="stop" target="../stopped"> <operation method="stop"/> </transition> </state> <state name="stopped"> <transition name="start" target="../started"> <operation method="start"/> </transition> </state> </c:graph> </target> </project>