Validation submission in Orbeon XForm

gistfile1.xml

<xforms:submission id="validation-submission"
	ref="instance('fr-form-instance')"
	resource="http://localhost:8080/MyApp/OrbeonValidationServlet"
	method="post" replace="instance" instance="validation-result">
	<!-- Clear external errors just before doing external validation -->
	<xforms:delete ev:event="xforms-submit" nodeset="//@v:*" />
	<xforms:action ev:event="xforms-submit-done">
		<!-- Insert external validation results when done -->
		<xforms:insert nodeset="."
			origin="instance('validation-result')/v:data/*" />
		<!-- Show all errors on form -->
		<xforms:dispatch name="fr-visit-all" targetid="error-summary" />
		<!-- Update error summary for incremental mode -->
		<xforms:refresh />
		<xforms:dispatch name="fr-update" targetid="error-summary" />
		<xforms:send submission="post-submission"
			if="count(instance('validation-result')/v:global-errors/*) 
		= 0" />
		<!-- xforms:send
		if="count(instance('validation-result')/v:global-errors/*) = 0"
		submission="fr-workflow-send-submission" / -->
	</xforms:action>
</xforms:submission>