Alarms, triggers and actions

The alarm runs its rule sets over all EPCISDocuments that are imported, where the rules triggers (conditions) are tested and actions are executed when all conditions for a rule are satisfied.

DomContext

The triggers and actions available are controlled by the DomContext, context that lets you use XPATH to express triggers for the alarm.

Method

Parameter

Description

stringValue

Returns the String value of the document evaluated

xmlValue

Returns the XML value of the document evaluated

numberValue

Returns the number or NaN if the context can't be parsed to a number

timeValue

Returns the DateTime of the context or time 0 if the context can't be parsed to a number

xpath

expression

Returns the result from evaluating an XPATH expression

action

Methods available on actions.

.mail	email	subject	body

.post	url	data
.post	url	data	username	password

Trigger Examples

stringValue

rule "tigger on ADD action"
    when
        $bn : DomContext( xpath( "//ObjectEvent/action" ).stringValue() == "ADD" )
    then
       .... 
end

numberValue

rule "tigger on temperature extension"
    when
        $bn : DomContext( xpath( "//ObjectEvent/ttdata:temperature" ).numberValue() > 50 )
    then
       .... 
end

timeValue

rule "tigger on time"
    when
        $bn : DomContext( )
        eval( $bn.xpath( "//ObjectEvent/eventTime" ).timeValue().after( new java.util.Date( 2010,1,1 ) ) )
    then
       .... 
end

Action Examples

Mail EPCISDocument

rule "Mail the EPCISDocument"
    when
        $bn : DomContext( )
    then
        $bn.action().mail( "email@address.com", "Imported EPCISDocument", $bn.xmlValue() )
end

POST EPCISDocument

rule "Post the EPCISDocument"
    when
        $bn : DomContext( )
    then
        $bn.action().post( "https://no-auth.server", $bn.xmlValue() );
        $bn.action().post( "https://basic-auth.server", $bn.xmlValue(), "username", "password" );
end