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Microwave owen (using parallel) example
The example below shows the implementation of a simple microwave oven using <parallel> and the SCXML In() predicate.
<scxml datamodel="ecmascript" initial="oven" name="ScxmlMicrowaveOwenParallel" version="1.0" xmlns="http://www.w3.org/2005/07/scxml">
<datamodel>
<data expr="5" id="cook_time"/>
<data expr="true" id="door_closed"/>
<data expr="0" id="timer"/>
</datamodel>
<parallel id="oven">
<state id="engine">
<initial>
<transition target="off"/>
</initial>
<state id="off">
<onentry>
<assign expr="0" location="timer"/>
</onentry>
<transition event="turn.on" target="on"/>
</state>
<state id="on">
<transition event="turn.off" target="off"/>
<transition cond="timer >= cook_time" target="off"/>
<initial>
<transition target="idle"/>
</initial>
<state id="idle">
<transition cond="In('closed')" target="cooking"/>
</state>
<state id="cooking">
<transition cond="In('open')" target="idle"/>
<transition event="time">
<assign location="timer" expr="timer + 1"/>
</transition>
</state>
</state>
</state>
<state id="door">
<initial>
<transition target="closed"/>
</initial>
<state id="closed">
<transition event="door.open" target="open"/>
</state>
<state id="open">
<transition event="door.close" target="closed"/>
</state>
</state>
</parallel>
</scxml>
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