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POIntegrity constraint in the XML schema
 

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  1. POIntegrity constraint in the XML schema
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    <p>I have an XML like this (a workflow represents a sort of a class that is instantiated by a process). </p> <pre><code>&lt;workflowManagementSystem&gt; &lt;workflows&gt; &lt;workflow name="workflow1"&gt; &lt;actions&gt; &lt;action name="action1" role="role1"&gt;&lt;/action&gt; &lt;action name="action2" role="role3"&gt;&lt;/action&gt; &lt;action name="action3" role="role4"&gt;&lt;/action&gt; &lt;/actions&gt; &lt;/workflow&gt; &lt;workflow name="workflow2"&gt; &lt;actions&gt; &lt;action name="action3" role="role4"&gt;&lt;/action&gt; &lt;action name="action2" role="role3"&gt;&lt;/action&gt; &lt;action name="action4" role="role4"&gt;&lt;/action&gt; &lt;/actions&gt; &lt;/workflow&gt; &lt;/workflows&gt; &lt;actors&gt; &lt;actor name="actor1" role="role1"&gt;&lt;/actor&gt; &lt;actor name="actor2" role="role2"&gt;&lt;/actor&gt; &lt;actor name="actor3" role="role3"&gt;&lt;/actor&gt; &lt;actor name="actor4" role="role4"&gt;&lt;/actor&gt; &lt;actor name="actor5" role="role2"&gt;&lt;/actor&gt; &lt;/actors&gt; &lt;processes&gt; &lt;process workflow="workflow1"&gt; &lt;actionStatuses&gt; &lt;actionStatus action="action1" actor="actor1"&gt;&lt;/actionStatus&gt; &lt;actionStatus action="action2" actor="actor3"&gt;&lt;/actionStatus&gt; &lt;/actionStatuses&gt; &lt;/process&gt; &lt;process workflow="workflow1"&gt; &lt;actionStatuses&gt; &lt;actionStatus action="action1" actor="actor1"&gt;&lt;/actionStatus&gt; &lt;actionStatus action="action2" actor="actor5"&gt;&lt;/actionStatus&gt; &lt;actionStatus action="action3" actor="actor4"&gt;&lt;/actionStatus&gt; &lt;/actionStatuses&gt; &lt;/process&gt; &lt;process workflow="workflow1"&gt; &lt;actionStatuses&gt; &lt;actionStatus action="action2" actor="actor5"&gt;&lt;/actionStatus&gt; &lt;actionStatus action="action4" actor="actor4"&gt;&lt;/actionStatus&gt; &lt;/actionStatuses&gt; &lt;/process&gt; &lt;/processes&gt; &lt;/workflowManagementSystem&gt; </code></pre> <p>I'd like to declare some constraints like: </p> <p>1) The name of the workflow has to be unique.<br/> 2) The name of the action has to be unique within the scope of the workflow containing it.<br/> 3) An action can be repeated within the process (more actionStatus referring to the same action).<br/> 4) An actionStatus should refer only to the action belonging to the particular workflow instantiated by the father process.<br/> 5) The actor indicated in actionStatus must belong to the same role as specified in the action to which it refers.<br/></p> <p>Is it possible?</p>
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