DELP

DELP is a Description Logic syntax for Event Processing.

Full Grammar

EventClause -> ['NAMED'] 'EVENT' eventIRI (EventDecl | PatternDecl)

EventDecl -> Manchester Syntax Description

PatternDecl -> 'WHEN' PatternExpr [IFDecl]

PatternExpr -> 'MATCH' FollowedByExpr [WITHIN TimePeriod ]

TimePeriod -> INTEGER (ms | s | m | h | d | w)

FollowedByExpr -> orExpr ((['NOT'] FOLLOWED_BY) andExpr)*

OrExpr -> andExpr (OR andExpr)*

AndExpr -> qualifyExpr ( AND qualifyExpr)*

EveryOrNotExpr -> ['EVERY' | 'NOT' ] ( eventIRI ['AS' eventAltIri] | '(' patternExpr ')' )*

IFDecl -> 'IF' '{' 'EVENT' (eventIRI | Var) FilterExpr '}'

FilterExpr -> '{' ( BGP | Filter)* '}'

##Example

PREFIX : http://example.org [...]

EVENT :SmokeDetectionEvent subClassOf
      ( ssniot:hasContext some ( ssniot:observedProperty some (ssn:Smoke) ) ) .

EVENT :HighTemperaturEvent subClassOf
      ( ssniot:hasContext some ( ssniot:observedProperty some (ssn:Temperature) ) )

NAMED EVENT :Fire {
   MATCH :HighTemperaturEvent -> :SmokeDetectionEvent WITHIN (5m)
   IF {
     EVENT :SmokeDetectionEvent { ?l1 dul:hasDataValue ?v}
     EVENT :HighTemperaturEvent { ?l2 dul:hasDataValue ?v}
   }
}